controls/combo.c

   1 /*
   2  * Combo controls
   3  *
   4  * Copyright 1997 Alex Korobka
   5  *
   6  * FIXME: roll up in Netscape 3.01.
   7  */
   8
   9 #include <string.h>
  10
  11 #include "winuser.h"
  12 #include "wine/winuser16.h"
  13 #include "sysmetrics.h"
  14 #include "win.h"
  15 #include "spy.h"
  16 #include "user.h"
  17 #include "heap.h"
  18 #include "combo.h"
  19 #include "drive.h"
  20 #include "debug.h"
  21 #include "tweak.h"
  22
  23 DEFAULT_DEBUG_CHANNEL(combo)
  24
  25   /* bits in the dwKeyData */
  26 #define KEYDATA_ALT             0x2000
  27 #define KEYDATA_PREVSTATE       0x4000
  28
  29 /*
  30  * Additional combo box definitions
  31  */
  32
  33 #define CB_GETPTR( wnd )      (*(LPHEADCOMBO*)((wnd)->wExtra))
  34 #define CB_NOTIFY( lphc, code ) \
  35         (SendMessageA( (lphc)->owner, WM_COMMAND, \
  36                          MAKEWPARAM((lphc)->self->wIDmenu, (code)), (lphc)->self->hwndSelf))
  37 #define CB_GETEDITTEXTLENGTH( lphc ) \
  38         (SendMessageA( (lphc)->hWndEdit, WM_GETTEXTLENGTH, 0, 0 ))
  39
  40 /*
  41  * Drawing globals
  42  */
  43 static HBITMAP  hComboBmp = 0;
  44 static UINT     CBitHeight, CBitWidth;
  45
  46 /*
  47  * Look and feel dependant "constants"
  48  */
  49 #define COMBO_XBORDERSIZE()      ( (TWEAK_WineLook == WIN31_LOOK) ? 0 : 2 )
  50 #define COMBO_YBORDERSIZE()      ( (TWEAK_WineLook == WIN31_LOOK) ? 0 : 2 )
  51 #define COMBO_EDITBUTTONSPACE()  ( (TWEAK_WineLook == WIN31_LOOK) ? 8 : 0 )
  52 #define EDIT_CONTROL_PADDING()   ( (TWEAK_WineLook == WIN31_LOOK) ? 0 : 1 )
  53
  54 /***********************************************************************
  55  *           COMBO_Init
  56  *
  57  * Load combo button bitmap.
  58  */
  59 static BOOL COMBO_Init()
  60 {
  61   HDC           hDC;
  62
  63   if( hComboBmp ) return TRUE;
  64   if( (hDC = CreateCompatibleDC(0)) )
  65   {
  66     BOOL        bRet = FALSE;
  67     if( (hComboBmp = LoadBitmapA(0, MAKEINTRESOURCEA(OBM_COMBO))) )
  68     {
  69       BITMAP      bm;
  70       HBITMAP     hPrevB;
  71       RECT        r;
  72
  73       GetObjectA( hComboBmp, sizeof(bm), &bm );
  74       CBitHeight = bm.bmHeight;
  75       CBitWidth  = bm.bmWidth;
  76
  77       TRACE(combo, "combo bitmap [%i,%i]\n", CBitWidth, CBitHeight );
  78
  79       hPrevB = SelectObject16( hDC, hComboBmp);
  80       SetRect( &r, 0, 0, CBitWidth, CBitHeight );
  81       InvertRect( hDC, &r );
  82       SelectObject( hDC, hPrevB );
  83       bRet = TRUE;
  84     }
  85     DeleteDC( hDC );
  86     return bRet;
  87   }
  88   return FALSE;
  89 }
  90
  91 /***********************************************************************
  92  *           COMBO_NCCreate
  93  */
  94 static LRESULT COMBO_NCCreate(WND* wnd, LPARAM lParam)
  95 {
  96    LPHEADCOMBO          lphc;
  97
  98    if ( wnd && COMBO_Init() &&
  99       (lphc = HeapAlloc(GetProcessHeap(), 0, sizeof(HEADCOMBO))) )
 100    {
 101         LPCREATESTRUCTA     lpcs = (CREATESTRUCTA*)lParam;
 102
 103         memset( lphc, 0, sizeof(HEADCOMBO) );
 104        *(LPHEADCOMBO*)wnd->wExtra = lphc;
 105
 106        /* some braindead apps do try to use scrollbar/border flags */
 107
 108         lphc->dwStyle = (lpcs->style & ~(WS_BORDER | WS_HSCROLL | WS_VSCROLL));
 109         wnd->dwStyle &= ~(WS_BORDER | WS_HSCROLL | WS_VSCROLL);
 110
 111         /*
 112          * We also have to remove the client edge style to make sure
 113          * we don't end-up with a non client area.
 114          */
 115         wnd->dwExStyle &= ~(WS_EX_CLIENTEDGE);
 116
 117         if( !(lpcs->style & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE)) )
 118               lphc->dwStyle |= CBS_HASSTRINGS;
 119         if( !(wnd->dwExStyle & WS_EX_NOPARENTNOTIFY) )
 120               lphc->wState |= CBF_NOTIFY;
 121
 122         TRACE(combo, "[0x%08x], style = %08x\n",
 123                      (UINT)lphc, lphc->dwStyle );
 124
 125         return (LRESULT)(UINT)wnd->hwndSelf;
 126     }
 127     return (LRESULT)FALSE;
 128 }
 129
 130 /***********************************************************************
 131  *           COMBO_NCDestroy
 132  */
 133 static LRESULT COMBO_NCDestroy( LPHEADCOMBO lphc )
 134 {
 135
 136    if( lphc )
 137    {
 138        WND*             wnd = lphc->self;
 139
 140        TRACE(combo,"[%04x]: freeing storage\n", CB_HWND(lphc));
 141
 142        if( (CB_GETTYPE(lphc) != CBS_SIMPLE) && lphc->hWndLBox )
 143            DestroyWindow( lphc->hWndLBox );
 144
 145        HeapFree( GetProcessHeap(), 0, lphc );
 146        wnd->wExtra[0] = 0;
 147    }
 148    return 0;
 149 }
 150
 151 /***********************************************************************
 152  *           CBForceDummyResize
 153  *
 154  * The dummy resize is used for listboxes that have a popup to trigger
 155  * a re-arranging of the contents of the combobox and the recalculation
 156  * of the size of the "real" control window.
 157  */
 158 static void CBForceDummyResize(
 159   LPHEADCOMBO lphc)
 160 {
 161   RECT windowRect;
 162
 163   GetWindowRect(CB_HWND(lphc), &windowRect);
 164
 165   /*
 166    * We have to be careful, resizing a combobox also has the meaning that the
 167    * dropped rect will be resized. In this case, we want to trigger a resize
 168    * to recalculate layout but we don't want to change the dropped rectangle
 169    * So, we add the size of the dropped rectangle to the size of the control.
 170    * this will cancel-out in the processing of the WM_WINDOWPOSCHANGING
 171    * message.
 172    */
 173   SetWindowPos( CB_HWND(lphc),
 174                 (HWND)NULL,
 175                 0, 0,
 176                 windowRect.right  - windowRect.left,
 177                 windowRect.bottom - windowRect.top +
 178                   lphc->droppedRect.bottom - lphc->droppedRect.top,
 179                 SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE );
 180 }
 181
 182 /***********************************************************************
 183  *           CBGetTextAreaHeight
 184  *
 185  * This method will calculate the height of the text area of the
 186  * combobox.
 187  * The height of the text area is set in two ways.
 188  * It can be set explicitely through a combobox message of through a
 189  * WM_MEASUREITEM callback.
 190  * If this is not the case, the height is set to 13 dialog units.
 191  * This height was determined through experimentation.
 192  */
 193 static INT CBGetTextAreaHeight(
 194   HWND        hwnd,
 195   LPHEADCOMBO lphc)
 196 {
 197   INT iTextItemHeight;
 198
 199   if( lphc->editHeight ) /* explicitly set height */
 200   {
 201     iTextItemHeight = lphc->editHeight;
 202   }
 203   else
 204   {
 205     TEXTMETRICA tm;
 206     HDC         hDC       = GetDC(hwnd);
 207     HFONT       hPrevFont = 0;
 208     INT         baseUnitY;
 209
 210     if (lphc->hFont)
 211       hPrevFont = SelectObject( hDC, lphc->hFont );
 212
 213     GetTextMetricsA(hDC, &tm);
 214
 215     baseUnitY = tm.tmHeight;
 216
 217     if( hPrevFont )
 218       SelectObject( hDC, hPrevFont );
 219
 220     ReleaseDC(hwnd, hDC);
 221
 222     iTextItemHeight = ((13 * baseUnitY) / 8);
 223
 224     /*
 225      * This "formula" calculates the height of the complete control.
 226      * To calculate the height of the text area, we have to remove the
 227      * borders.
 228      */
 229     iTextItemHeight -= 2*COMBO_YBORDERSIZE();
 230   }
 231
 232   /*
 233    * Check the ownerdraw case if we haven't asked the parent the size
 234    * of the item yet.
 235    */
 236   if ( CB_OWNERDRAWN(lphc) &&
 237        (lphc->wState & CBF_MEASUREITEM) )
 238   {
 239     MEASUREITEMSTRUCT measureItem;
 240     RECT              clientRect;
 241     INT               originalItemHeight = iTextItemHeight;
 242
 243     /*
 244      * We use the client rect for the width of the item.
 245      */
 246     GetClientRect(hwnd, &clientRect);
 247
 248     lphc->wState &= ~CBF_MEASUREITEM;
 249
 250     /*
 251      * Send a first one to measure the size of the text area
 252      */
 253     measureItem.CtlType    = ODT_COMBOBOX;
 254     measureItem.CtlID      = lphc->self->wIDmenu;
 255     measureItem.itemID     = -1;
 256     measureItem.itemWidth  = clientRect.right;
 257     measureItem.itemHeight = iTextItemHeight - 6; /* ownerdrawn cb is taller */
 258     measureItem.itemData   = 0;
 259     SendMessageA(lphc->owner, WM_MEASUREITEM,
 260                  (WPARAM)measureItem.CtlID, (LPARAM)&measureItem);
 261     iTextItemHeight = 6 + measureItem.itemHeight;
 262
 263     /*
 264      * Send a second one in the case of a fixed ownerdraw list to calculate the
 265      * size of the list items. (we basically do this on behalf of the listbox)
 266      */
 267     if (lphc->dwStyle & CBS_OWNERDRAWFIXED)
 268     {
 269       measureItem.CtlType    = ODT_COMBOBOX;
 270       measureItem.CtlID      = lphc->self->wIDmenu;
 271       measureItem.itemID     = 0;
 272       measureItem.itemWidth  = clientRect.right;
 273       measureItem.itemHeight = originalItemHeight;
 274       measureItem.itemData   = 0;
 275       SendMessageA(lphc->owner, WM_MEASUREITEM,
 276                    (WPARAM)measureItem.CtlID, (LPARAM)&measureItem);
 277       lphc->fixedOwnerDrawHeight = measureItem.itemHeight;
 278     }
 279
 280     /*
 281      * Keep the size for the next time
 282      */
 283     lphc->editHeight = iTextItemHeight;
 284   }
 285
 286   return iTextItemHeight;
 287 }
 288
 289
 290 /***********************************************************************
 291  *           CBCalcPlacement
 292  *
 293  * Set up component coordinates given valid lphc->RectCombo.
 294  */
 295 static void CBCalcPlacement(
 296   HWND        hwnd,
 297   LPHEADCOMBO lphc,
 298   LPRECT      lprEdit,
 299   LPRECT      lprButton,
 300   LPRECT      lprLB)
 301 {
 302   /*
 303    * Again, start with the client rectangle.
 304    */
 305   GetClientRect(hwnd, lprEdit);
 306
 307   /*
 308    * Remove the borders
 309    */
 310   InflateRect(lprEdit, -COMBO_XBORDERSIZE(), -COMBO_YBORDERSIZE());
 311
 312   /*
 313    * Chop off the bottom part to fit with the height of the text area.
 314    */
 315   lprEdit->bottom = lprEdit->top + CBGetTextAreaHeight(hwnd, lphc);
 316
 317   /*
 318    * The button starts the same vertical position as the text area.
 319    */
 320   CopyRect(lprButton, lprEdit);
 321
 322   /*
 323    * If the combobox is "simple" there is no button.
 324    */
 325   if( CB_GETTYPE(lphc) == CBS_SIMPLE )
 326     lprButton->left = lprButton->right = lprButton->bottom = 0;
 327   else
 328   {
 329     /*
 330      * Let's assume the combobox button is the same width as the
 331      * scrollbar button.
 332      * size the button horizontally and cut-off the text area.
 333      */
 334     lprButton->left = lprButton->right - GetSystemMetrics(SM_CXVSCROLL);
 335     lprEdit->right  = lprButton->left;
 336   }
 337
 338   /*
 339    * In the case of a dropdown, there is an additional spacing between the
 340    * text area and the button.
 341    */
 342   if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
 343   {
 344     lprEdit->right -= COMBO_EDITBUTTONSPACE();
 345   }
 346
 347   /*
 348    * If we have an edit control, we space it away from the borders slightly.
 349    */
 350   if (CB_GETTYPE(lphc) != CBS_DROPDOWNLIST)
 351   {
 352     InflateRect(lprEdit, -EDIT_CONTROL_PADDING(), -EDIT_CONTROL_PADDING());
 353   }
 354
 355   /*
 356    * Adjust the size of the listbox popup.
 357    */
 358   if( CB_GETTYPE(lphc) == CBS_SIMPLE )
 359   {
 360     /*
 361      * Use the client rectangle to initialize the listbox rectangle
 362      */
 363     GetClientRect(hwnd, lprLB);
 364
 365     /*
 366      * Then, chop-off the top part.
 367      */
 368     lprLB->top = lprEdit->bottom + COMBO_YBORDERSIZE();
 369   }
 370   else
 371   {
 372     /*
 373      * Make sure the dropped width is as large as the combobox itself.
 374      */
 375     if (lphc->droppedWidth < (lprButton->right + COMBO_XBORDERSIZE()))
 376     {
 377       lprLB->right  = lprLB->left + (lprButton->right + COMBO_XBORDERSIZE());
 378
 379       /*
 380        * In the case of a dropdown, the popup listbox is offset to the right.
 381        * so, we want to make sure it's flush with the right side of the
 382        * combobox
 383        */
 384       if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
 385         lprLB->right -= COMBO_EDITBUTTONSPACE();
 386     }
 387     else
 388        lprLB->right = lprLB->left + lphc->droppedWidth;
 389   }
 390
 391   TRACE(combo,"\ttext\t= (%i,%i-%i,%i)\n",
 392         lprEdit->left, lprEdit->top, lprEdit->right, lprEdit->bottom);
 393
 394   TRACE(combo,"\tbutton\t= (%i,%i-%i,%i)\n",
 395         lprButton->left, lprButton->top, lprButton->right, lprButton->bottom);
 396
 397   TRACE(combo,"\tlbox\t= (%i,%i-%i,%i)\n",
 398         lprLB->left, lprLB->top, lprLB->right, lprLB->bottom );
 399 }
 400
 401 /***********************************************************************
 402  *           CBGetDroppedControlRect
 403  */
 404 static void CBGetDroppedControlRect( LPHEADCOMBO lphc, LPRECT lpRect)
 405 {
 406   CopyRect(lpRect, &lphc->droppedRect);
 407 }
 408
 409 /***********************************************************************
 410  *           COMBO_WindowPosChanging
 411  */
 412 static LRESULT COMBO_WindowPosChanging(
 413   HWND        hwnd,
 414   LPHEADCOMBO lphc,
 415   WINDOWPOS*  posChanging)
 416 {
 417   /*
 418    * We need to override the WM_WINDOWPOSCHANGING method to handle all
 419    * the non-simple comboboxes. The problem is that those controls are
 420    * always the same height. We have to make sure they are not resized
 421    * to another value.
 422    */
 423   if ( ( CB_GETTYPE(lphc) != CBS_SIMPLE ) &&
 424        ((posChanging->flags & SWP_NOSIZE) == 0) )
 425   {
 426     int newComboHeight;
 427
 428     newComboHeight = CBGetTextAreaHeight(hwnd,lphc) +
 429                       2*COMBO_YBORDERSIZE();
 430
 431     /*
 432      * Resizing a combobox has another side effect, it resizes the dropped
 433      * rectangle as well. However, it does it only if the new height for the
 434      * combobox is different than the height it should have. In other words,
 435      * if the application resizing the combobox only had the intention to resize
 436      * the actual control, for example, to do the layout of a dialog that is
 437      * resized, the height of the dropdown is not changed.
 438      */
 439     if (posChanging->cy != newComboHeight)
 440     {
 441       lphc->droppedRect.bottom = lphc->droppedRect.top + posChanging->cy - newComboHeight;
 442
 443       posChanging->cy = newComboHeight;
 444     }
 445   }
 446
 447   return 0;
 448 }
 449
 450 /***********************************************************************
 451  *           COMBO_Create
 452  */
 453 static LRESULT COMBO_Create( LPHEADCOMBO lphc, WND* wnd, LPARAM lParam)
 454 {
 455   static char clbName[] = "ComboLBox";
 456   static char editName[] = "Edit";
 457
 458   LPCREATESTRUCTA  lpcs = (CREATESTRUCTA*)lParam;
 459
 460   if( !CB_GETTYPE(lphc) ) lphc->dwStyle |= CBS_SIMPLE;
 461   else if( CB_GETTYPE(lphc) != CBS_DROPDOWNLIST ) lphc->wState |= CBF_EDIT;
 462
 463   lphc->self  = wnd;
 464   lphc->owner = lpcs->hwndParent;
 465
 466   /*
 467    * The item height and dropped width are not set when the control
 468    * is created.
 469    */
 470   lphc->droppedWidth = lphc->editHeight = 0;
 471
 472   /*
 473    * The first time we go through, we want to measure the ownerdraw item
 474    */
 475   lphc->wState |= CBF_MEASUREITEM;
 476
 477   /* M$ IE 3.01 actually creates (and rapidly destroys) an ownerless combobox */
 478
 479   if( lphc->owner || !(lpcs->style & WS_VISIBLE) )
 480   {
 481       UINT      lbeStyle;
 482
 483       /*
 484        * Initialize the dropped rect to the size of the client area of the
 485        * control and then, force all the areas of the combobox to be
 486        * recalculated.
 487        */
 488       GetClientRect( wnd->hwndSelf, &lphc->droppedRect );
 489
 490       CBCalcPlacement(wnd->hwndSelf,
 491                       lphc,
 492                       &lphc->textRect,
 493                       &lphc->buttonRect,
 494                       &lphc->droppedRect );
 495
 496       /*
 497        * Adjust the position of the popup listbox if it's necessary
 498        */
 499       if ( CB_GETTYPE(lphc) != CBS_SIMPLE )
 500       {
 501         lphc->droppedRect.top   = lphc->textRect.bottom + COMBO_YBORDERSIZE();
 502
 503         /*
 504          * If it's a dropdown, the listbox is offset
 505          */
 506         if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
 507           lphc->droppedRect.left += COMBO_EDITBUTTONSPACE();
 508
 509         ClientToScreen(wnd->hwndSelf, (LPPOINT)&lphc->droppedRect);
 510         ClientToScreen(wnd->hwndSelf, (LPPOINT)&lphc->droppedRect.right);
 511       }
 512
 513       /* create listbox popup */
 514
 515       lbeStyle = (LBS_NOTIFY | WS_BORDER | WS_CLIPSIBLINGS) |
 516                  (lpcs->style & (WS_VSCROLL | CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE));
 517
 518       if( lphc->dwStyle & CBS_SORT )
 519         lbeStyle |= LBS_SORT;
 520       if( lphc->dwStyle & CBS_HASSTRINGS )
 521         lbeStyle |= LBS_HASSTRINGS;
 522       if( lphc->dwStyle & CBS_NOINTEGRALHEIGHT )
 523         lbeStyle |= LBS_NOINTEGRALHEIGHT;
 524       if( lphc->dwStyle & CBS_DISABLENOSCROLL )
 525         lbeStyle |= LBS_DISABLENOSCROLL;
 526
 527       if( CB_GETTYPE(lphc) == CBS_SIMPLE )      /* child listbox */
 528         lbeStyle |= WS_CHILD | WS_VISIBLE;
 529       else                                      /* popup listbox */
 530         lbeStyle |= WS_POPUP;
 531
 532      /* Dropdown ComboLBox is not a child window and we cannot pass
 533       * ID_CB_LISTBOX directly because it will be treated as a menu handle.
 534       */
 535       lphc->hWndLBox = CreateWindowExA(0,
 536                                        clbName,
 537                                        NULL,
 538                                        lbeStyle,
 539                                        lphc->droppedRect.left,
 540                                        lphc->droppedRect.top,
 541                                        lphc->droppedRect.right - lphc->droppedRect.left,
 542                                        lphc->droppedRect.bottom - lphc->droppedRect.top,
 543                         lphc->self->hwndSelf,
 544                        (lphc->dwStyle & CBS_DROPDOWN)? (HMENU)0 : (HMENU)ID_CB_LISTBOX,
 545                                        lphc->self->hInstance,
 546                                        (LPVOID)lphc );
 547
 548       if( lphc->hWndLBox )
 549       {
 550           BOOL  bEdit = TRUE;
 551           lbeStyle = WS_CHILD | WS_VISIBLE | ES_NOHIDESEL | ES_LEFT;
 552
 553           /*
 554            * In Win95 look, the border fo the edit control is
 555            * provided by the combobox
 556            */
 557           if (TWEAK_WineLook == WIN31_LOOK)
 558             lbeStyle |= WS_BORDER;
 559
 560           if( lphc->wState & CBF_EDIT )
 561           {
 562               if( lphc->dwStyle & CBS_OEMCONVERT )
 563                   lbeStyle |= ES_OEMCONVERT;
 564               if( lphc->dwStyle & CBS_AUTOHSCROLL )
 565                   lbeStyle |= ES_AUTOHSCROLL;
 566               if( lphc->dwStyle & CBS_LOWERCASE )
 567                   lbeStyle |= ES_LOWERCASE;
 568               else if( lphc->dwStyle & CBS_UPPERCASE )
 569                   lbeStyle |= ES_UPPERCASE;
 570
 571               lphc->hWndEdit = CreateWindowExA(0,
 572                                                editName,
 573                                                NULL,
 574                                                lbeStyle,
 575                                                lphc->textRect.left, lphc->textRect.top,
 576                                                lphc->textRect.right - lphc->textRect.left,
 577                                                lphc->textRect.bottom - lphc->textRect.top,
 578                                                lphc->self->hwndSelf,
 579                                                (HMENU)ID_CB_EDIT,
 580                                                lphc->self->hInstance,
 581                                                NULL );
 582
 583               if( !lphc->hWndEdit )
 584                 bEdit = FALSE;
 585           }
 586
 587           if( bEdit )
 588           {
 589             /*
 590              * If the combo is a dropdown, we must resize the control to fit only
 591              * the text area and button. To do this, we send a dummy resize and the
 592              * WM_WINDOWPOSCHANGING message will take care of setting the height for
 593              * us.
 594              */
 595             if( CB_GETTYPE(lphc) != CBS_SIMPLE )
 596             {
 597               CBForceDummyResize(lphc);
 598             }
 599
 600             TRACE(combo,"init done\n");
 601             return wnd->hwndSelf;
 602           }
 603           ERR(combo, "edit control failure.\n");
 604       } else ERR(combo, "listbox failure.\n");
 605   } else ERR(combo, "no owner for visible combo.\n");
 606
 607   /* CreateWindow() will send WM_NCDESTROY to cleanup */
 608
 609   return -1;
 610 }
 611
 612 /***********************************************************************
 613  *           CBPaintButton
 614  *
 615  * Paint combo button (normal, pressed, and disabled states).
 616  */
 617 static void CBPaintButton(
 618   LPHEADCOMBO lphc,
 619   HDC         hdc,
 620   RECT        rectButton)
 621 {
 622     UINT        x, y;
 623     BOOL        bBool;
 624     HDC       hMemDC;
 625     HBRUSH    hPrevBrush;
 626     COLORREF    oldTextColor, oldBkColor;
 627
 628     if( lphc->wState & CBF_NOREDRAW )
 629       return;
 630
 631     hPrevBrush = SelectObject(hdc, GetSysColorBrush(COLOR_BTNFACE));
 632
 633     /*
 634      * Draw the button background
 635      */
 636     PatBlt( hdc,
 637             rectButton.left,
 638             rectButton.top,
 639             rectButton.right-rectButton.left,
 640             rectButton.bottom-rectButton.top,
 641             PATCOPY );
 642
 643     if( (bBool = lphc->wState & CBF_BUTTONDOWN) )
 644     {
 645         DrawEdge( hdc, &rectButton, EDGE_SUNKEN, BF_RECT );
 646     }
 647     else
 648     {
 649         DrawEdge( hdc, &rectButton, EDGE_RAISED, BF_RECT );
 650     }
 651
 652     /*
 653      * Remove the edge of the button from the rectangle
 654      * and calculate the position of the bitmap.
 655      */
 656     InflateRect( &rectButton, -2, -2);
 657
 658     x = (rectButton.left + rectButton.right - CBitWidth) >> 1;
 659     y = (rectButton.top + rectButton.bottom - CBitHeight) >> 1;
 660
 661
 662     hMemDC = CreateCompatibleDC( hdc );
 663     SelectObject( hMemDC, hComboBmp );
 664     oldTextColor = SetTextColor( hdc, GetSysColor(COLOR_BTNFACE) );
 665     oldBkColor = SetBkColor( hdc, CB_DISABLED(lphc) ? RGB(128,128,128) :
 666                                RGB(0,0,0) );
 667     BitBlt( hdc, x, y, CBitWidth, CBitHeight, hMemDC, 0, 0, SRCCOPY );
 668     SetBkColor( hdc, oldBkColor );
 669     SetTextColor( hdc, oldTextColor );
 670     DeleteDC( hMemDC );
 671     SelectObject( hdc, hPrevBrush );
 672 }
 673
 674 /***********************************************************************
 675  *           CBPaintText
 676  *
 677  * Paint CBS_DROPDOWNLIST text field / update edit control contents.
 678  */
 679 static void CBPaintText(
 680   LPHEADCOMBO lphc,
 681   HDC         hdc,
 682   RECT        rectEdit)
 683 {
 684    INT  id, size = 0;
 685    LPSTR        pText = NULL;
 686
 687    if( lphc->wState & CBF_NOREDRAW ) return;
 688
 689    /* follow Windows combobox that sends a bunch of text
 690     * inquiries to its listbox while processing WM_PAINT. */
 691
 692    if( (id = SendMessageA(lphc->hWndLBox, LB_GETCURSEL, 0, 0) ) != LB_ERR )
 693    {
 694         size = SendMessageA( lphc->hWndLBox, LB_GETTEXTLEN, id, 0);
 695         if( (pText = HeapAlloc( GetProcessHeap(), 0, size + 1)) )
 696         {
 697             SendMessageA( lphc->hWndLBox, LB_GETTEXT, (WPARAM)id, (LPARAM)pText );
 698             pText[size] = '\0'; /* just in case */
 699         } else return;
 700    }
 701
 702    if( lphc->wState & CBF_EDIT )
 703    {
 704         if( CB_HASSTRINGS(lphc) ) SetWindowTextA( lphc->hWndEdit, pText ? pText : "" );
 705         if( lphc->wState & CBF_FOCUSED )
 706             SendMessageA( lphc->hWndEdit, EM_SETSEL, 0, (LPARAM)(-1));
 707    }
 708    else /* paint text field ourselves */
 709    {
 710         HBRUSH hPrevBrush = 0;
 711         HDC      hDC = hdc;
 712
 713         if( !hDC )
 714         {
 715             if ((hDC = GetDC(lphc->self->hwndSelf)))
 716             {
 717                 HBRUSH hBrush = SendMessageA( lphc->owner,
 718                                                   WM_CTLCOLORLISTBOX,
 719                                                   hDC, lphc->self->hwndSelf );
 720                 hPrevBrush = SelectObject( hDC,
 721                            (hBrush) ? hBrush : GetStockObject(WHITE_BRUSH) );
 722             }
 723         }
 724         if( hDC )
 725         {
 726             UINT        itemState;
 727             HFONT       hPrevFont = (lphc->hFont) ? SelectObject(hDC, lphc->hFont) : 0;
 728
 729             /*
 730              * Give ourselves some space.
 731              */
 732             InflateRect( &rectEdit, -1, -1 );
 733
 734             if ( (lphc->wState & CBF_FOCUSED) &&
 735                 !(lphc->wState & CBF_DROPPED) )
 736             {
 737                 /* highlight */
 738
 739                 FillRect( hDC, &rectEdit, GetSysColorBrush(COLOR_HIGHLIGHT) );
 740                 SetBkColor( hDC, GetSysColor( COLOR_HIGHLIGHT ) );
 741                 SetTextColor( hDC, GetSysColor( COLOR_HIGHLIGHTTEXT ) );
 742                 itemState = ODS_SELECTED | ODS_FOCUS;
 743             }
 744             else
 745               itemState = 0;
 746
 747             if( CB_OWNERDRAWN(lphc) )
 748             {
 749                 DRAWITEMSTRUCT dis;
 750                 HRGN           clipRegion;
 751
 752                 /*
 753                  * Save the current clip region.
 754                  * To retrieve the clip region, we need to create one "dummy"
 755                  * clip region.
 756                  */
 757                 clipRegion = CreateRectRgnIndirect(&rectEdit);
 758
 759                 if (GetClipRgn(hDC, clipRegion)!=1)
 760                 {
 761                   DeleteObject(clipRegion);
 762                   clipRegion=(HRGN)NULL;
 763                 }
 764
 765                 if ( lphc->self->dwStyle & WS_DISABLED )
 766                   itemState |= ODS_DISABLED;
 767
 768                 dis.CtlType     = ODT_COMBOBOX;
 769                 dis.CtlID       = lphc->self->wIDmenu;
 770                 dis.hwndItem    = lphc->self->hwndSelf;
 771                 dis.itemAction  = ODA_DRAWENTIRE;
 772                 dis.itemID      = id;
 773                 dis.itemState   = itemState;
 774                 dis.hDC         = hDC;
 775                 dis.rcItem      = rectEdit;
 776                 dis.itemData    = SendMessageA( lphc->hWndLBox, LB_GETITEMDATA,
 777                                                                   (WPARAM)id, 0 );
 778
 779                 /*
 780                  * Clip the DC and have the parent draw the item.
 781                  */
 782                 IntersectClipRect(hDC,
 783                                   rectEdit.left,  rectEdit.top,
 784                                   rectEdit.right, rectEdit.bottom);
 785
 786                 SendMessageA(lphc->owner, WM_DRAWITEM,
 787                              lphc->self->wIDmenu, (LPARAM)&dis );
 788
 789                 /*
 790                  * Reset the clipping region.
 791                  */
 792                 SelectClipRgn(hDC, clipRegion);
 793             }
 794             else
 795             {
 796                 ExtTextOutA( hDC,
 797                              rectEdit.left + 1,
 798                              rectEdit.top + 1,
 799                              ETO_OPAQUE | ETO_CLIPPED,
 800                              &rectEdit,
 801                                pText ? pText : "" , size, NULL );
 802
 803                 if(lphc->wState & CBF_FOCUSED && !(lphc->wState & CBF_DROPPED))
 804                     DrawFocusRect( hDC, &rectEdit );
 805             }
 806
 807             if( hPrevFont )
 808               SelectObject(hDC, hPrevFont );
 809
 810             if( !hdc )
 811             {
 812                 if( hPrevBrush )
 813                   SelectObject( hDC, hPrevBrush );
 814
 815                 ReleaseDC( lphc->self->hwndSelf, hDC );
 816             }
 817         }
 818    }
 819    if (pText)
 820         HeapFree( GetProcessHeap(), 0, pText );
 821 }
 822
 823 /***********************************************************************
 824  *           CBPaintBorder
 825  */
 826 static void CBPaintBorder(
 827   HWND        hwnd,
 828   LPHEADCOMBO lphc,
 829   HDC         hdc)
 830 {
 831   RECT clientRect;
 832
 833   if (CB_GETTYPE(lphc) != CBS_SIMPLE)
 834   {
 835     GetClientRect(hwnd, &clientRect);
 836   }
 837   else
 838   {
 839     CopyRect(&clientRect, &lphc->textRect);
 840
 841     InflateRect(&clientRect, EDIT_CONTROL_PADDING(), EDIT_CONTROL_PADDING());
 842     InflateRect(&clientRect, COMBO_XBORDERSIZE(), COMBO_YBORDERSIZE());
 843   }
 844
 845   DrawEdge(hdc, &clientRect, EDGE_SUNKEN, BF_RECT);
 846 }
 847
 848 /***********************************************************************
 849  *           COMBO_EraseBackground
 850  */
 851 static LRESULT COMBO_EraseBackground(
 852   HWND        hwnd,
 853   LPHEADCOMBO lphc,
 854   HDC         hParamDC)
 855 {
 856   HBRUSH  hBkgBrush;
 857   RECT    clientRect;
 858   HDC     hDC;
 859
 860   hDC = (hParamDC) ? hParamDC
 861                    : GetDC(hwnd);
 862
 863   /*
 864    * Calculate the area that we want to erase.
 865    */
 866   if (CB_GETTYPE(lphc) != CBS_SIMPLE)
 867   {
 868     GetClientRect(hwnd, &clientRect);
 869   }
 870   else
 871   {
 872     CopyRect(&clientRect, &lphc->textRect);
 873
 874     InflateRect(&clientRect, COMBO_XBORDERSIZE(), COMBO_YBORDERSIZE());
 875   }
 876
 877   hBkgBrush = SendMessageA( lphc->owner, WM_CTLCOLORLISTBOX,
 878                             hDC, hwnd);
 879
 880   if( !hBkgBrush )
 881     hBkgBrush = GetStockObject(WHITE_BRUSH);
 882
 883   FillRect(hDC, &clientRect, hBkgBrush);
 884
 885   if (!hParamDC)
 886     ReleaseDC(hwnd, hDC);
 887
 888   return TRUE;
 889 }
 890
 891 /***********************************************************************
 892  *           COMBO_Paint
 893  */
 894 static LRESULT COMBO_Paint(LPHEADCOMBO lphc, HDC hParamDC)
 895 {
 896   PAINTSTRUCT ps;
 897   HDC   hDC;
 898
 899   hDC = (hParamDC) ? hParamDC
 900                    : BeginPaint( lphc->self->hwndSelf, &ps);
 901
 902
 903   if( hDC && !(lphc->wState & CBF_NOREDRAW) )
 904   {
 905       HBRUSH    hPrevBrush, hBkgBrush;
 906
 907       hBkgBrush = SendMessageA( lphc->owner, WM_CTLCOLORLISTBOX,
 908                                   hDC, lphc->self->hwndSelf );
 909
 910       if( !hBkgBrush )
 911         hBkgBrush = GetStockObject(WHITE_BRUSH);
 912
 913       hPrevBrush = SelectObject( hDC, hBkgBrush );
 914
 915       /*
 916        * In non 3.1 look, there is a sunken border on the combobox
 917        */
 918       if (TWEAK_WineLook != WIN31_LOOK)
 919       {
 920         CBPaintBorder(CB_HWND(lphc), lphc, hDC);
 921       }
 922
 923       if( !IsRectEmpty(&lphc->buttonRect) )
 924       {
 925         CBPaintButton(lphc, hDC, lphc->buttonRect);
 926       }
 927
 928       if( !(lphc->wState & CBF_EDIT) )
 929       {
 930         /*
 931          * The text area has a border only in Win 3.1 look.
 932          */
 933         if (TWEAK_WineLook == WIN31_LOOK)
 934         {
 935           HPEN hPrevPen = SelectObject( hDC, GetSysColorPen(COLOR_WINDOWFRAME) );
 936
 937           Rectangle( hDC,
 938                      lphc->textRect.left, lphc->textRect.top,
 939                      lphc->textRect.right - 1, lphc->textRect.bottom - 1);
 940
 941           SelectObject( hDC, hPrevPen );
 942         }
 943
 944         CBPaintText( lphc, hDC, lphc->textRect);
 945       }
 946
 947       if( hPrevBrush )
 948         SelectObject( hDC, hPrevBrush );
 949   }
 950
 951   if( !hParamDC )
 952     EndPaint(lphc->self->hwndSelf, &ps);
 953
 954   return 0;
 955 }
 956
 957 /***********************************************************************
 958  *           CBUpdateLBox
 959  *
 960  * Select listbox entry according to the contents of the edit control.
 961  */
 962 static INT CBUpdateLBox( LPHEADCOMBO lphc )
 963 {
 964    INT  length, idx, ret;
 965    LPSTR        pText = NULL;
 966
 967    idx = ret = LB_ERR;
 968    length = CB_GETEDITTEXTLENGTH( lphc );
 969
 970    if( length > 0 )
 971        pText = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1);
 972
 973    TRACE(combo,"\t edit text length %i\n", length );
 974
 975    if( pText )
 976    {
 977        if( length ) GetWindowTextA( lphc->hWndEdit, pText, length + 1);
 978        else pText[0] = '\0';
 979        idx = SendMessageA( lphc->hWndLBox, LB_FINDSTRING,
 980                              (WPARAM)(-1), (LPARAM)pText );
 981        if( idx == LB_ERR ) idx = 0;     /* select first item */
 982        else ret = idx;
 983        HeapFree( GetProcessHeap(), 0, pText );
 984    }
 985
 986    /* select entry */
 987
 988    SendMessageA( lphc->hWndLBox, LB_SETCURSEL, (WPARAM)idx, 0 );
 989
 990    if( idx >= 0 )
 991    {
 992        SendMessageA( lphc->hWndLBox, LB_SETTOPINDEX, (WPARAM)idx, 0 );
 993        /* probably superfluous but Windows sends this too */
 994        SendMessageA( lphc->hWndLBox, LB_SETCARETINDEX, (WPARAM)idx, 0 );
 995    }
 996    return ret;
 997 }
 998
 999 /***********************************************************************
1000  *           CBUpdateEdit
1001  *
1002  * Copy a listbox entry to the edit control.
1003  */
1004 static void CBUpdateEdit( LPHEADCOMBO lphc , INT index )
1005 {
1006    INT  length;
1007    LPSTR        pText = NULL;
1008
1009    TRACE(combo,"\t %i\n", index );
1010
1011    if( index == -1 )
1012    {
1013        length = CB_GETEDITTEXTLENGTH( lphc );
1014        if( length )
1015        {
1016            if( (pText = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1)) )
1017            {
1018                 GetWindowTextA( lphc->hWndEdit, pText, length + 1 );
1019                 index = SendMessageA( lphc->hWndLBox, LB_FINDSTRING,
1020                                         (WPARAM)(-1), (LPARAM)pText );
1021                 HeapFree( GetProcessHeap(), 0, pText );
1022            }
1023        }
1024    }
1025
1026    if( index >= 0 ) /* got an entry */
1027    {
1028        length = SendMessageA( lphc->hWndLBox, LB_GETTEXTLEN, (WPARAM)index, 0);
1029        if( length )
1030        {
1031            if( (pText = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1)) )
1032            {
1033                 SendMessageA( lphc->hWndLBox, LB_GETTEXT,
1034                                 (WPARAM)index, (LPARAM)pText );
1035                 SendMessageA( lphc->hWndEdit, WM_SETTEXT, 0, (LPARAM)pText );
1036                 SendMessageA( lphc->hWndEdit, EM_SETSEL, 0, (LPARAM)(-1) );
1037                 HeapFree( GetProcessHeap(), 0, pText );
1038            }
1039        }
1040    }
1041 }
1042
1043 /***********************************************************************
1044  *           CBDropDown
1045  *
1046  * Show listbox popup.
1047  */
1048 static void CBDropDown( LPHEADCOMBO lphc )
1049 {
1050    INT  index;
1051    RECT rect;
1052
1053    TRACE(combo,"[%04x]: drop down\n", CB_HWND(lphc));
1054
1055    CB_NOTIFY( lphc, CBN_DROPDOWN );
1056
1057    /* set selection */
1058
1059    lphc->wState |= CBF_DROPPED;
1060    if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1061    {
1062        index = CBUpdateLBox( lphc );
1063        if( !(lphc->wState & CBF_CAPTURE) ) CBUpdateEdit( lphc, index );
1064    }
1065    else
1066    {
1067        index = SendMessageA( lphc->hWndLBox, LB_GETCURSEL, 0, 0 );
1068        if( index == LB_ERR ) index = 0;
1069        SendMessageA( lphc->hWndLBox, LB_SETTOPINDEX, (WPARAM)index, 0 );
1070        SendMessageA( lphc->hWndLBox, LB_CARETON, 0, 0 );
1071    }
1072
1073    /* now set popup position */
1074    GetWindowRect( lphc->self->hwndSelf, &rect );
1075
1076
1077    /*
1078     * If it's a dropdown, the listbox is offset
1079     */
1080    if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1081      rect.left += COMBO_EDITBUTTONSPACE();
1082
1083    SetWindowPos( lphc->hWndLBox, HWND_TOP, rect.left, rect.bottom,
1084                  lphc->droppedRect.right - lphc->droppedRect.left,
1085                  lphc->droppedRect.bottom - lphc->droppedRect.top,
1086                  SWP_NOACTIVATE | SWP_NOREDRAW);
1087
1088    if( !(lphc->wState & CBF_NOREDRAW) )
1089      RedrawWindow( lphc->self->hwndSelf, NULL, 0, RDW_INVALIDATE |
1090                            RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );
1091
1092    ShowWindow( lphc->hWndLBox, SW_SHOWNA );
1093 }
1094
1095 /***********************************************************************
1096  *           CBRollUp
1097  *
1098  * Hide listbox popup.
1099  */
1100 static void CBRollUp( LPHEADCOMBO lphc, BOOL ok, BOOL bButton )
1101 {
1102    HWND hWnd = lphc->self->hwndSelf;
1103
1104    CB_NOTIFY( lphc, (ok) ? CBN_SELENDOK : CBN_SELENDCANCEL );
1105
1106    if( IsWindow( hWnd ) && CB_GETTYPE(lphc) != CBS_SIMPLE )
1107    {
1108
1109        TRACE(combo,"[%04x]: roll up [%i]\n", CB_HWND(lphc), (INT)ok );
1110
1111        /* always send WM_LBUTTONUP? */
1112        SendMessageA( lphc->hWndLBox, WM_LBUTTONUP, 0, (LPARAM)(-1) );
1113
1114        if( lphc->wState & CBF_DROPPED )
1115        {
1116            RECT rect;
1117
1118            lphc->wState &= ~CBF_DROPPED;
1119            ShowWindow( lphc->hWndLBox, SW_HIDE );
1120
1121            if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1122            {
1123                INT index = SendMessageA( lphc->hWndLBox, LB_GETCURSEL, 0, 0 );
1124                CBUpdateEdit( lphc, index );
1125                rect = lphc->buttonRect;
1126            }
1127            else
1128            {
1129                if( bButton )
1130                {
1131                  UnionRect( &rect,
1132                             &lphc->buttonRect,
1133                             &lphc->textRect);
1134                }
1135                else
1136                  rect = lphc->textRect;
1137
1138                bButton = TRUE;
1139            }
1140
1141            if( bButton && !(lphc->wState & CBF_NOREDRAW) )
1142                RedrawWindow( hWnd, &rect, 0, RDW_INVALIDATE |
1143                                RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );
1144            CB_NOTIFY( lphc, CBN_CLOSEUP );
1145        }
1146    }
1147 }
1148
1149 /***********************************************************************
1150  *           COMBO_FlipListbox
1151  *
1152  * Used by the ComboLBox to show/hide itself in response to VK_F4, etc...
1153  */
1154 BOOL COMBO_FlipListbox( LPHEADCOMBO lphc, BOOL bRedrawButton )
1155 {
1156    if( lphc->wState & CBF_DROPPED )
1157    {
1158        CBRollUp( lphc, TRUE, bRedrawButton );
1159        return FALSE;
1160    }
1161
1162    CBDropDown( lphc );
1163    return TRUE;
1164 }
1165
1166 /***********************************************************************
1167  *           COMBO_GetLBWindow
1168  *
1169  * Edit control helper.
1170  */
1171 HWND COMBO_GetLBWindow( WND* pWnd )
1172 {
1173   LPHEADCOMBO       lphc = CB_GETPTR(pWnd);
1174   if( lphc ) return lphc->hWndLBox;
1175   return 0;
1176 }
1177
1178
1179 /***********************************************************************
1180  *           CBRepaintButton
1181  */
1182 static void CBRepaintButton( LPHEADCOMBO lphc )
1183    {
1184   InvalidateRect(CB_HWND(lphc), &lphc->buttonRect, TRUE);
1185   UpdateWindow(CB_HWND(lphc));
1186 }
1187
1188 /***********************************************************************
1189  *           COMBO_SetFocus
1190  */
1191 static void COMBO_SetFocus( LPHEADCOMBO lphc )
1192 {
1193    if( !(lphc->wState & CBF_FOCUSED) )
1194    {
1195        if( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST )
1196            SendMessageA( lphc->hWndLBox, LB_CARETON, 0, 0 );
1197
1198        if( lphc->wState & CBF_EDIT )
1199            SendMessageA( lphc->hWndEdit, EM_SETSEL, 0, (LPARAM)(-1) );
1200        lphc->wState |= CBF_FOCUSED;
1201        if( !(lphc->wState & CBF_EDIT) )
1202        {
1203          InvalidateRect(CB_HWND(lphc), &lphc->textRect, TRUE);
1204        }
1205
1206        CB_NOTIFY( lphc, CBN_SETFOCUS );
1207    }
1208 }
1209
1210 /***********************************************************************
1211  *           COMBO_KillFocus
1212  */
1213 static void COMBO_KillFocus( LPHEADCOMBO lphc )
1214 {
1215    HWND hWnd = lphc->self->hwndSelf;
1216
1217    if( lphc->wState & CBF_FOCUSED )
1218    {
1219        SendMessageA( hWnd, WM_LBUTTONUP, 0, (LPARAM)(-1) );
1220
1221        CBRollUp( lphc, FALSE, TRUE );
1222        if( IsWindow( hWnd ) )
1223        {
1224            if( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST )
1225                SendMessageA( lphc->hWndLBox, LB_CARETOFF, 0, 0 );
1226
1227            lphc->wState &= ~CBF_FOCUSED;
1228
1229            /* redraw text */
1230            if( lphc->wState & CBF_EDIT )
1231                SendMessageA( lphc->hWndEdit, EM_SETSEL, (WPARAM)(-1), 0 );
1232            else
1233            {
1234              InvalidateRect(CB_HWND(lphc), &lphc->textRect, TRUE);
1235            }
1236
1237            CB_NOTIFY( lphc, CBN_KILLFOCUS );
1238        }
1239    }
1240 }
1241
1242 /***********************************************************************
1243  *           COMBO_Command
1244  */
1245 static LRESULT COMBO_Command( LPHEADCOMBO lphc, WPARAM wParam, HWND hWnd )
1246 {
1247    if( lphc->wState & CBF_EDIT && lphc->hWndEdit == hWnd )
1248    {
1249        /* ">> 8" makes gcc generate jump-table instead of cmp ladder */
1250
1251        switch( HIWORD(wParam) >> 8 )
1252        {
1253            case (EN_SETFOCUS >> 8):
1254
1255                 TRACE(combo,"[%04x]: edit [%04x] got focus\n",
1256                              CB_HWND(lphc), lphc->hWndEdit );
1257
1258                 if( !(lphc->wState & CBF_FOCUSED) ) COMBO_SetFocus( lphc );
1259                 break;
1260
1261            case (EN_KILLFOCUS >> 8):
1262
1263                 TRACE(combo,"[%04x]: edit [%04x] lost focus\n",
1264                              CB_HWND(lphc), lphc->hWndEdit );
1265
1266                 /* NOTE: it seems that Windows' edit control sends an
1267                  * undocumented message WM_USER + 0x1B instead of this
1268                  * notification (only when it happens to be a part of
1269                  * the combo). ?? - AK.
1270                  */
1271
1272                 COMBO_KillFocus( lphc );
1273                 break;
1274
1275
1276            case (EN_CHANGE >> 8):
1277                 CB_NOTIFY( lphc, CBN_EDITCHANGE );
1278                 CBUpdateLBox( lphc );
1279                 break;
1280
1281            case (EN_UPDATE >> 8):
1282                 CB_NOTIFY( lphc, CBN_EDITUPDATE );
1283                 break;
1284
1285            case (EN_ERRSPACE >> 8):
1286                 CB_NOTIFY( lphc, CBN_ERRSPACE );
1287        }
1288    }
1289    else if( lphc->hWndLBox == hWnd )
1290    {
1291        switch( HIWORD(wParam) )
1292        {
1293            case LBN_ERRSPACE:
1294                 CB_NOTIFY( lphc, CBN_ERRSPACE );
1295                 break;
1296
1297            case LBN_DBLCLK:
1298                 CB_NOTIFY( lphc, CBN_DBLCLK );
1299                 break;
1300
1301            case LBN_SELCHANGE:
1302            case LBN_SELCANCEL:
1303
1304                 TRACE(combo,"[%04x]: lbox selection change [%04x]\n",
1305                              CB_HWND(lphc), lphc->wState );
1306
1307                 /* do not roll up if selection is being tracked
1308                  * by arrowkeys in the dropdown listbox */
1309
1310                 if( (lphc->wState & CBF_DROPPED) && !(lphc->wState & CBF_NOROLLUP) )
1311                      CBRollUp( lphc, (HIWORD(wParam) == LBN_SELCHANGE), TRUE );
1312                 else lphc->wState &= ~CBF_NOROLLUP;
1313
1314                 CB_NOTIFY( lphc, CBN_SELCHANGE );
1315                 InvalidateRect(CB_HWND(lphc), &lphc->textRect, TRUE);
1316                 /* fall through */
1317
1318            case LBN_SETFOCUS:
1319            case LBN_KILLFOCUS:
1320                 /* nothing to do here since ComboLBox always resets the focus to its
1321                  * combo/edit counterpart */
1322                  break;
1323        }
1324    }
1325    return 0;
1326 }
1327
1328 /***********************************************************************
1329  *           COMBO_ItemOp
1330  *
1331  * Fixup an ownerdrawn item operation and pass it up to the combobox owner.
1332  */
1333 static LRESULT COMBO_ItemOp( LPHEADCOMBO lphc, UINT msg,
1334                                WPARAM wParam, LPARAM lParam )
1335 {
1336    HWND hWnd = lphc->self->hwndSelf;
1337
1338    TRACE(combo,"[%04x]: ownerdraw op %04x\n", CB_HWND(lphc), msg );
1339
1340 #define lpIS    ((LPDELETEITEMSTRUCT)lParam)
1341
1342    /* two first items are the same in all 4 structs */
1343    lpIS->CtlType = ODT_COMBOBOX;
1344    lpIS->CtlID   = lphc->self->wIDmenu;
1345
1346    switch( msg )        /* patch window handle */
1347    {
1348         case WM_DELETEITEM:
1349              lpIS->hwndItem = hWnd;
1350 #undef  lpIS
1351              break;
1352         case WM_DRAWITEM:
1353 #define lpIS    ((LPDRAWITEMSTRUCT)lParam)
1354              lpIS->hwndItem = hWnd;
1355 #undef  lpIS
1356              break;
1357         case WM_COMPAREITEM:
1358 #define lpIS    ((LPCOMPAREITEMSTRUCT)lParam)
1359              lpIS->hwndItem = hWnd;
1360 #undef  lpIS
1361              break;
1362    }
1363
1364    return SendMessageA( lphc->owner, msg, lphc->self->wIDmenu, lParam );
1365 }
1366
1367 /***********************************************************************
1368  *           COMBO_GetText
1369  */
1370 static LRESULT COMBO_GetText( LPHEADCOMBO lphc, UINT N, LPSTR lpText)
1371 {
1372    if( lphc->wState & CBF_EDIT )
1373        return SendMessageA( lphc->hWndEdit, WM_GETTEXT,
1374                              (WPARAM)N, (LPARAM)lpText );
1375
1376    /* get it from the listbox */
1377
1378    if( lphc->hWndLBox )
1379    {
1380        INT idx = SendMessageA( lphc->hWndLBox, LB_GETCURSEL, 0, 0 );
1381        if( idx != LB_ERR )
1382        {
1383            LPSTR        lpBuffer;
1384            INT  length = SendMessageA( lphc->hWndLBox, LB_GETTEXTLEN,
1385                                                 (WPARAM)idx, 0 );
1386
1387            /* 'length' is without the terminating character */
1388            if( length >= N )
1389                lpBuffer = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1 );
1390            else
1391                lpBuffer = lpText;
1392
1393            if( lpBuffer )
1394            {
1395                INT    n = SendMessageA( lphc->hWndLBox, LB_GETTEXT,
1396                                            (WPARAM)idx, (LPARAM)lpBuffer );
1397
1398                /* truncate if buffer is too short */
1399
1400                if( length >= N )
1401                {
1402                    if (N && lpText) {
1403                    if( n != LB_ERR ) memcpy( lpText, lpBuffer, (N>n) ? n+1 : N-1 );
1404                    lpText[N - 1] = '\0';
1405                    }
1406                    HeapFree( GetProcessHeap(), 0, lpBuffer );
1407                }
1408                return (LRESULT)n;
1409            }
1410        }
1411    }
1412    return 0;
1413 }
1414
1415
1416 /***********************************************************************
1417  *           CBResetPos
1418  *
1419  * This function sets window positions according to the updated
1420  * component placement struct.
1421  */
1422 static void CBResetPos(
1423   LPHEADCOMBO lphc,
1424   LPRECT      rectEdit,
1425   LPRECT      rectLB,
1426   BOOL        bRedraw)
1427 {
1428    BOOL bDrop = (CB_GETTYPE(lphc) != CBS_SIMPLE);
1429
1430    /* NOTE: logs sometimes have WM_LBUTTONUP before a cascade of
1431     * sizing messages */
1432
1433    if( lphc->wState & CBF_EDIT )
1434      SetWindowPos( lphc->hWndEdit, 0,
1435                    rectEdit->left, rectEdit->top,
1436                    rectEdit->right - rectEdit->left,
1437                    rectEdit->bottom - rectEdit->top,
1438                        SWP_NOZORDER | SWP_NOACTIVATE | ((bDrop) ? SWP_NOREDRAW : 0) );
1439
1440    SetWindowPos( lphc->hWndLBox, 0,
1441                  rectLB->left, rectLB->top,
1442                  rectLB->right - rectLB->left,
1443                  rectLB->bottom - rectLB->top,
1444                    SWP_NOACTIVATE | SWP_NOZORDER | ((bDrop) ? SWP_NOREDRAW : 0) );
1445
1446    if( bDrop )
1447    {
1448        if( lphc->wState & CBF_DROPPED )
1449        {
1450            lphc->wState &= ~CBF_DROPPED;
1451            ShowWindow( lphc->hWndLBox, SW_HIDE );
1452        }
1453
1454        if( bRedraw && !(lphc->wState & CBF_NOREDRAW) )
1455            RedrawWindow( lphc->self->hwndSelf, NULL, 0,
1456                            RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW );
1457    }
1458 }
1459
1460
1461 /***********************************************************************
1462  *           COMBO_Size
1463  */
1464 static void COMBO_Size( LPHEADCOMBO lphc )
1465   {
1466   CBCalcPlacement(lphc->self->hwndSelf,
1467                   lphc,
1468                   &lphc->textRect,
1469                   &lphc->buttonRect,
1470                   &lphc->droppedRect);
1471
1472   CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1473 }
1474
1475
1476 /***********************************************************************
1477  *           COMBO_Font
1478  */
1479 static void COMBO_Font( LPHEADCOMBO lphc, HFONT hFont, BOOL bRedraw )
1480 {
1481   /*
1482    * Set the font
1483    */
1484   lphc->hFont = hFont;
1485
1486   /*
1487    * Propagate to owned windows.
1488    */
1489   if( lphc->wState & CBF_EDIT )
1490       SendMessageA( lphc->hWndEdit, WM_SETFONT, (WPARAM)hFont, bRedraw );
1491   SendMessageA( lphc->hWndLBox, WM_SETFONT, (WPARAM)hFont, bRedraw );
1492
1493   /*
1494    * Redo the layout of the control.
1495    */
1496   if ( CB_GETTYPE(lphc) == CBS_SIMPLE)
1497   {
1498     CBCalcPlacement(lphc->self->hwndSelf,
1499                     lphc,
1500                     &lphc->textRect,
1501                     &lphc->buttonRect,
1502                     &lphc->droppedRect);
1503
1504     CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1505   }
1506   else
1507   {
1508     CBForceDummyResize(lphc);
1509   }
1510 }
1511
1512
1513 /***********************************************************************
1514  *           COMBO_SetItemHeight
1515  */
1516 static LRESULT COMBO_SetItemHeight( LPHEADCOMBO lphc, INT index, INT height )
1517 {
1518    LRESULT      lRet = CB_ERR;
1519
1520    if( index == -1 ) /* set text field height */
1521    {
1522        if( height < 32768 )
1523        {
1524            lphc->editHeight = height;
1525
1526          /*
1527           * Redo the layout of the control.
1528           */
1529          if ( CB_GETTYPE(lphc) == CBS_SIMPLE)
1530          {
1531            CBCalcPlacement(lphc->self->hwndSelf,
1532                            lphc,
1533                            &lphc->textRect,
1534                            &lphc->buttonRect,
1535                            &lphc->droppedRect);
1536
1537            CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1538          }
1539          else
1540          {
1541            CBForceDummyResize(lphc);
1542          }
1543
1544            lRet = height;
1545        }
1546    }
1547    else if ( CB_OWNERDRAWN(lphc) )      /* set listbox item height */
1548         lRet = SendMessageA( lphc->hWndLBox, LB_SETITEMHEIGHT,
1549                               (WPARAM)index, (LPARAM)height );
1550    return lRet;
1551 }
1552
1553 /***********************************************************************
1554  *           COMBO_SelectString
1555  */
1556 static LRESULT COMBO_SelectString( LPHEADCOMBO lphc, INT start, LPCSTR pText )
1557 {
1558    INT index = SendMessageA( lphc->hWndLBox, LB_SELECTSTRING,
1559                                  (WPARAM)start, (LPARAM)pText );
1560    if( index >= 0 )
1561    {
1562      if( lphc->wState & CBF_EDIT )
1563        CBUpdateEdit( lphc, index );
1564      else
1565      {
1566        InvalidateRect(CB_HWND(lphc), &lphc->textRect, TRUE);
1567      }
1568    }
1569    return (LRESULT)index;
1570 }
1571
1572 /***********************************************************************
1573  *           COMBO_LButtonDown
1574  */
1575 static void COMBO_LButtonDown( LPHEADCOMBO lphc, LPARAM lParam )
1576 {
1577    POINT     pt;
1578    BOOL      bButton;
1579    HWND      hWnd = lphc->self->hwndSelf;
1580
1581    pt.x = LOWORD(lParam);
1582    pt.y = HIWORD(lParam);
1583    bButton = PtInRect(&lphc->buttonRect, pt);
1584
1585    if( (CB_GETTYPE(lphc) == CBS_DROPDOWNLIST) ||
1586        (bButton && (CB_GETTYPE(lphc) == CBS_DROPDOWN)) )
1587    {
1588        lphc->wState |= CBF_BUTTONDOWN;
1589        if( lphc->wState & CBF_DROPPED )
1590        {
1591            /* got a click to cancel selection */
1592
1593            lphc->wState &= ~CBF_BUTTONDOWN;
1594            CBRollUp( lphc, TRUE, FALSE );
1595            if( !IsWindow( hWnd ) ) return;
1596
1597            if( lphc->wState & CBF_CAPTURE )
1598            {
1599                lphc->wState &= ~CBF_CAPTURE;
1600                ReleaseCapture();
1601            }
1602        }
1603        else
1604        {
1605            /* drop down the listbox and start tracking */
1606
1607            lphc->wState |= CBF_CAPTURE;
1608            CBDropDown( lphc );
1609            SetCapture( hWnd );
1610        }
1611        if( bButton ) CBRepaintButton( lphc );
1612    }
1613 }
1614
1615 /***********************************************************************
1616  *           COMBO_LButtonUp
1617  *
1618  * Release capture and stop tracking if needed.
1619  */
1620 static void COMBO_LButtonUp( LPHEADCOMBO lphc, LPARAM lParam )
1621 {
1622    if( lphc->wState & CBF_CAPTURE )
1623    {
1624        lphc->wState &= ~CBF_CAPTURE;
1625        if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1626        {
1627            INT index = CBUpdateLBox( lphc );
1628            CBUpdateEdit( lphc, index );
1629        }
1630        ReleaseCapture();
1631    }
1632
1633    if( lphc->wState & CBF_BUTTONDOWN )
1634    {
1635        lphc->wState &= ~CBF_BUTTONDOWN;
1636        CBRepaintButton( lphc );
1637    }
1638 }
1639
1640 /***********************************************************************
1641  *           COMBO_MouseMove
1642  *
1643  * Two things to do - track combo button and release capture when
1644  * pointer goes into the listbox.
1645  */
1646 static void COMBO_MouseMove( LPHEADCOMBO lphc, WPARAM wParam, LPARAM lParam )
1647 {
1648    POINT  pt;
1649    RECT   lbRect;
1650
1651    pt.x = LOWORD(lParam);
1652    pt.y = HIWORD(lParam);
1653
1654    if( lphc->wState & CBF_BUTTONDOWN )
1655    {
1656      BOOL bButton;
1657
1658      bButton = PtInRect(&lphc->buttonRect, pt);
1659
1660      if( !bButton )
1661      {
1662        lphc->wState &= ~CBF_BUTTONDOWN;
1663        CBRepaintButton( lphc );
1664      }
1665    }
1666
1667    GetClientRect( lphc->hWndLBox, &lbRect );
1668    MapWindowPoints( lphc->self->hwndSelf, lphc->hWndLBox, &pt, 1 );
1669    if( PtInRect(&lbRect, pt) )
1670    {
1671        lphc->wState &= ~CBF_CAPTURE;
1672        ReleaseCapture();
1673        if( CB_GETTYPE(lphc) == CBS_DROPDOWN ) CBUpdateLBox( lphc );
1674
1675        /* hand over pointer tracking */
1676        SendMessageA( lphc->hWndLBox, WM_LBUTTONDOWN, wParam, lParam );
1677    }
1678 }
1679
1680
1681 /***********************************************************************
1682  *           ComboWndProc
1683  *
1684  * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/ctrl/src/combobox_15.htm
1685  */
1686 LRESULT WINAPI ComboWndProc( HWND hwnd, UINT message,
1687                              WPARAM wParam, LPARAM lParam )
1688 {
1689     LRESULT retvalue;
1690     WND*        pWnd = WIN_FindWndPtr(hwnd);
1691
1692     if( pWnd )
1693     {
1694       LPHEADCOMBO       lphc = CB_GETPTR(pWnd);
1695
1696       TRACE(combo, "[%04x]: msg %s wp %08x lp %08lx\n",
1697                    pWnd->hwndSelf, SPY_GetMsgName(message), wParam, lParam );
1698
1699       if( lphc || message == WM_NCCREATE )
1700       switch(message)
1701       {
1702
1703         /* System messages */
1704
1705         case WM_NCCREATE:
1706                 retvalue = COMBO_NCCreate(pWnd, lParam);
1707                 goto END;
1708         case WM_NCDESTROY:
1709                 COMBO_NCDestroy(lphc);
1710                 break;
1711
1712         case WM_CREATE:
1713                 retvalue = COMBO_Create(lphc, pWnd, lParam);
1714                 goto END;
1715
1716         case WM_PRINTCLIENT:
1717                 if (lParam & PRF_ERASEBKGND)
1718                   COMBO_EraseBackground(hwnd, lphc, wParam);
1719
1720                 /* Fallthrough */
1721         case WM_PAINT:
1722                 /* wParam may contain a valid HDC! */
1723                 retvalue = COMBO_Paint(lphc, wParam);
1724                 goto END;
1725         case WM_ERASEBKGND:
1726                 retvalue = COMBO_EraseBackground(hwnd, lphc, wParam);
1727                 goto END;
1728         case WM_GETDLGCODE:
1729                 retvalue = (LRESULT)(DLGC_WANTARROWS | DLGC_WANTCHARS);
1730                 goto END;
1731         case WM_WINDOWPOSCHANGING:
1732                 retvalue = COMBO_WindowPosChanging(hwnd, lphc, (LPWINDOWPOS)lParam);
1733                 return retvalue;
1734         case WM_SIZE:
1735                 if( lphc->hWndLBox &&
1736                   !(lphc->wState & CBF_NORESIZE) ) COMBO_Size( lphc );
1737                 retvalue = TRUE;
1738                 goto END;
1739         case WM_SETFONT:
1740                 COMBO_Font( lphc, (HFONT16)wParam, (BOOL)lParam );
1741                 retvalue = TRUE;
1742                 goto END;
1743         case WM_GETFONT:
1744                 retvalue = (LRESULT)lphc->hFont;
1745                 goto END;
1746         case WM_SETFOCUS:
1747                 if( lphc->wState & CBF_EDIT )
1748                     SetFocus( lphc->hWndEdit );
1749                 else
1750                     COMBO_SetFocus( lphc );
1751                 retvalue = TRUE;
1752                 goto END;
1753         case WM_KILLFOCUS:
1754 #define hwndFocus ((HWND16)wParam)
1755                 if( !hwndFocus ||
1756                     (hwndFocus != lphc->hWndEdit && hwndFocus != lphc->hWndLBox ))
1757                     COMBO_KillFocus( lphc );
1758 #undef hwndFocus
1759                 retvalue = TRUE;
1760                 goto END;
1761         case WM_COMMAND:
1762                 retvalue = COMBO_Command( lphc, wParam, (HWND)lParam );
1763                 goto END;
1764         case WM_GETTEXT:
1765                 retvalue = COMBO_GetText( lphc, (UINT)wParam, (LPSTR)lParam );
1766                 goto END;
1767         case WM_SETTEXT:
1768         case WM_GETTEXTLENGTH:
1769         case WM_CLEAR:
1770         case WM_CUT:
1771         case WM_PASTE:
1772         case WM_COPY:
1773                 if( lphc->wState & CBF_EDIT )
1774                 {
1775                     retvalue = SendMessageA( lphc->hWndEdit, message, wParam, lParam );
1776                     goto END;
1777                 }
1778                 retvalue = CB_ERR;
1779                 goto END;
1780         case WM_DRAWITEM:
1781         case WM_DELETEITEM:
1782         case WM_COMPAREITEM:
1783         case WM_MEASUREITEM:
1784                 retvalue = COMBO_ItemOp( lphc, message, wParam, lParam );
1785                 goto END;
1786         case WM_ENABLE:
1787                 if( lphc->wState & CBF_EDIT )
1788                     EnableWindow( lphc->hWndEdit, (BOOL)wParam );
1789                 EnableWindow( lphc->hWndLBox, (BOOL)wParam );
1790                 retvalue = TRUE;
1791                 goto END;
1792         case WM_SETREDRAW:
1793                 if( wParam )
1794                     lphc->wState &= ~CBF_NOREDRAW;
1795                 else
1796                     lphc->wState |= CBF_NOREDRAW;
1797
1798                 if( lphc->wState & CBF_EDIT )
1799                     SendMessageA( lphc->hWndEdit, message, wParam, lParam );
1800                 SendMessageA( lphc->hWndLBox, message, wParam, lParam );
1801                 retvalue = 0;
1802                 goto END;
1803         case WM_SYSKEYDOWN:
1804                 if( KEYDATA_ALT & HIWORD(lParam) )
1805                     if( wParam == VK_UP || wParam == VK_DOWN )
1806                         COMBO_FlipListbox( lphc, TRUE );
1807                 break;
1808
1809         case WM_CHAR:
1810         case WM_KEYDOWN:
1811                 if( lphc->wState & CBF_EDIT )
1812                     retvalue = SendMessageA( lphc->hWndEdit, message, wParam, lParam );
1813                 else
1814                     retvalue = SendMessageA( lphc->hWndLBox, message, wParam, lParam );
1815                 goto END;
1816         case WM_LBUTTONDOWN:
1817                 if( !(lphc->wState & CBF_FOCUSED) ) SetFocus( lphc->self->hwndSelf );
1818                 if( lphc->wState & CBF_FOCUSED ) COMBO_LButtonDown( lphc, lParam );
1819                 retvalue = TRUE;
1820                 goto END;
1821         case WM_LBUTTONUP:
1822                 COMBO_LButtonUp( lphc, lParam );
1823                 retvalue = TRUE;
1824                 goto END;
1825         case WM_MOUSEMOVE:
1826                 if( lphc->wState & CBF_CAPTURE )
1827                     COMBO_MouseMove( lphc, wParam, lParam );
1828                 retvalue = TRUE;
1829                 goto END;
1830         /* Combo messages */
1831
1832         case CB_ADDSTRING16:
1833                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1834         case CB_ADDSTRING:
1835                 retvalue = SendMessageA( lphc->hWndLBox, LB_ADDSTRING, 0, lParam);
1836                 goto END;
1837         case CB_INSERTSTRING16:
1838                 wParam = (INT)(INT16)wParam;
1839                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1840         case CB_INSERTSTRING:
1841                 retvalue = SendMessageA( lphc->hWndLBox, LB_INSERTSTRING, wParam, lParam);
1842                 goto END;
1843         case CB_DELETESTRING16:
1844         case CB_DELETESTRING:
1845                 retvalue = SendMessageA( lphc->hWndLBox, LB_DELETESTRING, wParam, 0);
1846                 goto END;
1847         case CB_SELECTSTRING16:
1848                 wParam = (INT)(INT16)wParam;
1849                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1850         case CB_SELECTSTRING:
1851                 retvalue = COMBO_SelectString( lphc, (INT)wParam, (LPSTR)lParam );
1852                 goto END;
1853         case CB_FINDSTRING16:
1854                 wParam = (INT)(INT16)wParam;
1855                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1856         case CB_FINDSTRING:
1857                 retvalue = SendMessageA( lphc->hWndLBox, LB_FINDSTRING, wParam, lParam);
1858                 goto END;
1859         case CB_FINDSTRINGEXACT16:
1860                 wParam = (INT)(INT16)wParam;
1861                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1862         case CB_FINDSTRINGEXACT:
1863                 retvalue = SendMessageA( lphc->hWndLBox, LB_FINDSTRINGEXACT,
1864                                                        wParam, lParam );
1865                 goto END;
1866         case CB_SETITEMHEIGHT16:
1867                 wParam = (INT)(INT16)wParam;    /* signed integer */
1868         case CB_SETITEMHEIGHT:
1869                 retvalue = COMBO_SetItemHeight( lphc, (INT)wParam, (INT)lParam);
1870                 goto END;
1871         case CB_GETITEMHEIGHT16:
1872                 wParam = (INT)(INT16)wParam;
1873         case CB_GETITEMHEIGHT:
1874                 if( (INT)wParam >= 0 )  /* listbox item */
1875                 {
1876                     retvalue = SendMessageA( lphc->hWndLBox, LB_GETITEMHEIGHT, wParam, 0);
1877                     goto END;
1878                 }
1879                 retvalue = CBGetTextAreaHeight(hwnd, lphc);
1880                 goto END;
1881         case CB_RESETCONTENT16:
1882         case CB_RESETCONTENT:
1883                 SendMessageA( lphc->hWndLBox, LB_RESETCONTENT, 0, 0 );
1884                 InvalidateRect(CB_HWND(lphc), NULL, TRUE);
1885                 retvalue = TRUE;
1886                 goto END;
1887         case CB_INITSTORAGE:
1888                 retvalue = SendMessageA( lphc->hWndLBox, LB_INITSTORAGE, wParam, lParam);
1889                 goto END;
1890         case CB_GETHORIZONTALEXTENT:
1891                 retvalue = SendMessageA( lphc->hWndLBox, LB_GETHORIZONTALEXTENT, 0, 0);
1892                 goto END;
1893         case CB_SETHORIZONTALEXTENT:
1894                 retvalue = SendMessageA( lphc->hWndLBox, LB_SETHORIZONTALEXTENT, wParam, 0);
1895                 goto END;
1896         case CB_GETTOPINDEX:
1897                 retvalue = SendMessageA( lphc->hWndLBox, LB_GETTOPINDEX, 0, 0);
1898                 goto END;
1899         case CB_GETLOCALE:
1900                 retvalue = SendMessageA( lphc->hWndLBox, LB_GETLOCALE, 0, 0);
1901                 goto END;
1902         case CB_SETLOCALE:
1903                 retvalue = SendMessageA( lphc->hWndLBox, LB_SETLOCALE, wParam, 0);
1904                 goto END;
1905         case CB_GETDROPPEDWIDTH:
1906                 if( lphc->droppedWidth )
1907                 {
1908                     retvalue = lphc->droppedWidth;
1909                     goto END;
1910                 }
1911                 retvalue = lphc->droppedRect.right - lphc->droppedRect.left;
1912                 goto END;
1913         case CB_SETDROPPEDWIDTH:
1914                 if( (CB_GETTYPE(lphc) != CBS_SIMPLE) &&
1915                     (INT)wParam < 32768 ) lphc->droppedWidth = (INT)wParam;
1916                 retvalue = CB_ERR;
1917                 goto END;
1918         case CB_GETDROPPEDCONTROLRECT16:
1919                 lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1920                 if( lParam )
1921                 {
1922                     RECT        r;
1923                     CBGetDroppedControlRect( lphc, &r );
1924                     CONV_RECT32TO16( &r, (LPRECT16)lParam );
1925                 }
1926                 retvalue = CB_OKAY;
1927                 goto END;
1928         case CB_GETDROPPEDCONTROLRECT:
1929                 if( lParam ) CBGetDroppedControlRect(lphc, (LPRECT)lParam );
1930                 retvalue = CB_OKAY;
1931                 goto END;
1932         case CB_GETDROPPEDSTATE16:
1933         case CB_GETDROPPEDSTATE:
1934                 retvalue = (lphc->wState & CBF_DROPPED) ? TRUE : FALSE;
1935                 goto END;
1936         case CB_DIR16:
1937                 lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1938                 /* fall through */
1939         case CB_DIR:
1940                 retvalue = COMBO_Directory( lphc, (UINT)wParam,
1941                                        (LPSTR)lParam, (message == CB_DIR));
1942                 goto END;
1943         case CB_SHOWDROPDOWN16:
1944         case CB_SHOWDROPDOWN:
1945                 if( CB_GETTYPE(lphc) != CBS_SIMPLE )
1946                 {
1947                     if( wParam )
1948                     {
1949                         if( !(lphc->wState & CBF_DROPPED) )
1950                             CBDropDown( lphc );
1951                     }
1952                     else
1953                         if( lphc->wState & CBF_DROPPED )
1954                             CBRollUp( lphc, FALSE, TRUE );
1955                 }
1956                 retvalue = TRUE;
1957                 goto END;
1958         case CB_GETCOUNT16:
1959         case CB_GETCOUNT:
1960                 retvalue = SendMessageA( lphc->hWndLBox, LB_GETCOUNT, 0, 0);
1961                 goto END;
1962         case CB_GETCURSEL16:
1963         case CB_GETCURSEL:
1964                 retvalue = SendMessageA( lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1965                 goto END;
1966         case CB_SETCURSEL16:
1967                 wParam = (INT)(INT16)wParam;
1968         case CB_SETCURSEL:
1969                 lParam = SendMessageA( lphc->hWndLBox, LB_SETCURSEL, wParam, 0);
1970                 if( lphc->wState & CBF_SELCHANGE )
1971                 {
1972                     /* no LBN_SELCHANGE in this case, update manually */
1973                     InvalidateRect(CB_HWND(lphc), &lphc->textRect, TRUE);
1974                     lphc->wState &= ~CBF_SELCHANGE;
1975                 }
1976                 retvalue = lParam;
1977                 goto END;
1978         case CB_GETLBTEXT16:
1979                 wParam = (INT)(INT16)wParam;
1980                 lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1981         case CB_GETLBTEXT:
1982                 retvalue = SendMessageA( lphc->hWndLBox, LB_GETTEXT, wParam, lParam);
1983                 goto END;
1984         case CB_GETLBTEXTLEN16:
1985                 wParam = (INT)(INT16)wParam;
1986         case CB_GETLBTEXTLEN:
1987                 retvalue = SendMessageA( lphc->hWndLBox, LB_GETTEXTLEN, wParam, 0);
1988                 goto END;
1989         case CB_GETITEMDATA16:
1990                 wParam = (INT)(INT16)wParam;
1991         case CB_GETITEMDATA:
1992                 retvalue = SendMessageA( lphc->hWndLBox, LB_GETITEMDATA, wParam, 0);
1993                 goto END;
1994         case CB_SETITEMDATA16:
1995                 wParam = (INT)(INT16)wParam;
1996         case CB_SETITEMDATA:
1997                 retvalue = SendMessageA( lphc->hWndLBox, LB_SETITEMDATA, wParam, lParam);
1998                 goto END;
1999         case CB_GETEDITSEL16:
2000                 wParam = lParam = 0;   /* just in case */
2001         case CB_GETEDITSEL:
2002                 if( lphc->wState & CBF_EDIT )
2003                 {
2004                     INT a, b;
2005
2006                     retvalue = SendMessageA( lphc->hWndEdit, EM_GETSEL,
2007                                            (wParam) ? wParam : (WPARAM)&a,
2008                                            (lParam) ? lParam : (LPARAM)&b );
2009                     goto END;
2010                 }
2011                 retvalue = CB_ERR;
2012                 goto END;
2013         case CB_SETEDITSEL16:
2014         case CB_SETEDITSEL:
2015                 if( lphc->wState & CBF_EDIT )
2016                 {
2017                     retvalue = SendMessageA( lphc->hWndEdit, EM_SETSEL,
2018                           (INT)(INT16)LOWORD(lParam), (INT)(INT16)HIWORD(lParam) );
2019                     goto END;
2020                 }
2021                 retvalue = CB_ERR;
2022                 goto END;
2023         case CB_SETEXTENDEDUI16:
2024         case CB_SETEXTENDEDUI:
2025                 if( CB_GETTYPE(lphc) == CBS_SIMPLE )
2026                 {
2027                     retvalue = CB_ERR;
2028                     goto END;
2029                 }
2030                 if( wParam )
2031                     lphc->wState |= CBF_EUI;
2032                 else lphc->wState &= ~CBF_EUI;
2033                 retvalue = CB_OKAY;
2034                 goto END;
2035         case CB_GETEXTENDEDUI16:
2036         case CB_GETEXTENDEDUI:
2037                 retvalue = (lphc->wState & CBF_EUI) ? TRUE : FALSE;
2038                 goto END;
2039         case (WM_USER + 0x1B):
2040                 WARN(combo, "[%04x]: undocumented msg!\n", hwnd );
2041     }
2042     retvalue = DefWindowProcA(hwnd, message, wParam, lParam);
2043     goto END;
2044   }
2045     retvalue = CB_ERR;
2046 END:
2047     WIN_ReleaseWndPtr(pWnd);
2048     return retvalue;
2049 }
2050