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 "windows.h"
  12 #include "sysmetrics.h"
  13 #include "win.h"
  14 #include "spy.h"
  15 #include "user.h"
  16 #include "graphics.h"
  17 #include "heap.h"
  18 #include "combo.h"
  19 #include "drive.h"
  20 #include "debug.h"
  21
  22   /* bits in the dwKeyData */
  23 #define KEYDATA_ALT             0x2000
  24 #define KEYDATA_PREVSTATE       0x4000
  25
  26 /*
  27  * Additional combo box definitions
  28  */
  29
  30 #define CB_GETPTR( wnd )      (*(LPHEADCOMBO*)((wnd)->wExtra))
  31 #define CB_NOTIFY( lphc, code ) \
  32         (SendMessage32A( (lphc)->owner, WM_COMMAND, \
  33                          MAKEWPARAM((lphc)->self->wIDmenu, (code)), (lphc)->self->hwndSelf))
  34 #define CB_GETEDITTEXTLENGTH( lphc ) \
  35         (SendMessage32A( (lphc)->hWndEdit, WM_GETTEXTLENGTH, 0, 0 ))
  36
  37 static HBITMAP32        hComboBmp = 0;
  38 static UINT32           CBitHeight, CBitWidth;
  39 static UINT32           CBitOffset = 8;
  40
  41 /***********************************************************************
  42  *           COMBO_Init
  43  *
  44  * Load combo button bitmap.
  45  */
  46 static BOOL32 COMBO_Init()
  47 {
  48   HDC32         hDC;
  49
  50   if( hComboBmp ) return TRUE;
  51   if( (hDC = CreateCompatibleDC32(0)) )
  52   {
  53     BOOL32      bRet = FALSE;
  54     if( (hComboBmp = LoadBitmap32A(0, MAKEINTRESOURCE32A(OBM_COMBO))) )
  55     {
  56       BITMAP32      bm;
  57       HBITMAP32     hPrevB;
  58       RECT32        r;
  59
  60       GetObject32A( hComboBmp, sizeof(bm), &bm );
  61       CBitHeight = bm.bmHeight;
  62       CBitWidth  = bm.bmWidth;
  63
  64       TRACE(combo, "combo bitmap [%i,%i]\n", CBitWidth, CBitHeight );
  65
  66       hPrevB = SelectObject16( hDC, hComboBmp);
  67       SetRect32( &r, 0, 0, CBitWidth, CBitHeight );
  68       InvertRect32( hDC, &r );
  69       SelectObject32( hDC, hPrevB );
  70       bRet = TRUE;
  71     }
  72     DeleteDC32( hDC );
  73     return bRet;
  74   }
  75   return FALSE;
  76 }
  77
  78 /***********************************************************************
  79  *           COMBO_NCCreate
  80  */
  81 static LRESULT COMBO_NCCreate(WND* wnd, LPARAM lParam)
  82 {
  83    LPHEADCOMBO          lphc;
  84
  85    if ( wnd && COMBO_Init() &&
  86       (lphc = HeapAlloc(GetProcessHeap(), 0, sizeof(HEADCOMBO))) )
  87    {
  88         LPCREATESTRUCT32A     lpcs = (CREATESTRUCT32A*)lParam;
  89
  90         memset( lphc, 0, sizeof(HEADCOMBO) );
  91        *(LPHEADCOMBO*)wnd->wExtra = lphc;
  92
  93        /* some braindead apps do try to use scrollbar/border flags */
  94
  95         lphc->dwStyle = (lpcs->style & ~(WS_BORDER | WS_HSCROLL | WS_VSCROLL));
  96         wnd->dwStyle &= ~(WS_BORDER | WS_HSCROLL | WS_VSCROLL);
  97
  98         if( !(lpcs->style & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE)) )
  99               lphc->dwStyle |= CBS_HASSTRINGS;
 100         if( !(wnd->dwExStyle & WS_EX_NOPARENTNOTIFY) )
 101               lphc->wState |= CBF_NOTIFY;
 102
 103         TRACE(combo, "[0x%08x], style = %08x\n",
 104                      (UINT32)lphc, lphc->dwStyle );
 105
 106         return (LRESULT)(UINT32)wnd->hwndSelf;
 107     }
 108     return (LRESULT)FALSE;
 109 }
 110
 111 /***********************************************************************
 112  *           COMBO_NCDestroy
 113  */
 114 static LRESULT COMBO_NCDestroy( LPHEADCOMBO lphc )
 115 {
 116
 117    if( lphc )
 118    {
 119        WND*             wnd = lphc->self;
 120
 121        TRACE(combo,"[%04x]: freeing storage\n", CB_HWND(lphc));
 122
 123        if( (CB_GETTYPE(lphc) != CBS_SIMPLE) && lphc->hWndLBox )
 124            DestroyWindow32( lphc->hWndLBox );
 125
 126        HeapFree( GetProcessHeap(), 0, lphc );
 127        wnd->wExtra[0] = 0;
 128    }
 129    return 0;
 130 }
 131
 132 /***********************************************************************
 133  *           CBGetDefaultTextHeight
 134  */
 135 static void CBGetDefaultTextHeight( LPHEADCOMBO lphc, LPSIZE32 lpSize )
 136 {
 137    if( lphc->editHeight ) /* explicitly set height */
 138        lpSize->cy = lphc->editHeight;
 139    else
 140    {
 141        HDC32    hDC = GetDC32( lphc->self->hwndSelf );
 142        HFONT32  hPrevFont = 0;
 143
 144        if( lphc->hFont ) hPrevFont = SelectObject32( hDC, lphc->hFont );
 145
 146        GetTextExtentPoint32A( hDC, "0", 1, lpSize);
 147
 148        lpSize->cy += lpSize->cy / 4 + 4 * SYSMETRICS_CYBORDER;
 149
 150        if( hPrevFont ) SelectObject32( hDC, hPrevFont );
 151        ReleaseDC32( lphc->self->hwndSelf, hDC );
 152    }
 153    lpSize->cx = lphc->RectCombo.right - lphc->RectCombo.left;
 154 }
 155
 156
 157 /***********************************************************************
 158  *           CBCalcPlacement
 159  *
 160  * Set up component coordinates given valid lphc->RectCombo.
 161  */
 162 static void CBCalcPlacement( LPHEADCOMBO lphc, LPRECT32 lprEdit,
 163                              LPRECT32 lprButton, LPRECT32 lprLB )
 164 {
 165    RECT32       rect = lphc->RectCombo;
 166    SIZE32       size;
 167
 168    /* get combo height and width */
 169
 170    if( CB_OWNERDRAWN(lphc) )
 171    {
 172        UINT32   u = lphc->RectEdit.bottom - lphc->RectEdit.top;
 173
 174        if( lphc->wState & CBF_MEASUREITEM ) /* first initialization */
 175        {
 176            MEASUREITEMSTRUCT32        mi32;
 177
 178            /* calculate defaults before sending WM_MEASUREITEM */
 179
 180            CBGetDefaultTextHeight( lphc, &size );
 181
 182            lphc->wState &= ~CBF_MEASUREITEM;
 183
 184            mi32.CtlType = ODT_COMBOBOX;
 185            mi32.CtlID   = lphc->self->wIDmenu;
 186            mi32.itemID  = -1;
 187            mi32.itemWidth  = size.cx;
 188            mi32.itemHeight = size.cy - 6; /* ownerdrawn cb is taller */
 189            mi32.itemData   = 0;
 190            SendMessage32A(lphc->owner, WM_MEASUREITEM,
 191                                 (WPARAM32)mi32.CtlID, (LPARAM)&mi32);
 192            u = 6 + (UINT16)mi32.itemHeight;
 193        }
 194        else
 195            size.cx = rect.right - rect.left;
 196        size.cy = u;
 197    }
 198    else
 199        CBGetDefaultTextHeight( lphc, &size );
 200
 201    /* calculate text and button placement */
 202
 203    lprEdit->left = lprEdit->top = lprButton->top = 0;
 204    if( CB_GETTYPE(lphc) == CBS_SIMPLE )         /* no button */
 205        lprButton->left = lprButton->right = lprButton->bottom = 0;
 206    else
 207    {
 208        INT32    i = size.cx - CBitWidth - 10;   /* seems ok */
 209
 210        lprButton->right = size.cx;
 211        lprButton->left = (INT16)i;
 212        lprButton->bottom = lprButton->top + size.cy;
 213
 214        if( i < 0 ) size.cx = 0;
 215        else size.cx = i;
 216    }
 217
 218    if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
 219    {
 220        size.cx -= CBitOffset;
 221        if( size.cx < 0 ) size.cx = 0;
 222    }
 223
 224    lprEdit->right = size.cx; lprEdit->bottom = size.cy;
 225
 226    /* listbox placement */
 227
 228    lprLB->left = ( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST ) ? 0 : CBitOffset;
 229    lprLB->top = lprEdit->bottom - SYSMETRICS_CYBORDER;
 230    lprLB->right = rect.right - rect.left;
 231    lprLB->bottom = rect.bottom - rect.top;
 232
 233    if( lphc->droppedWidth > (lprLB->right - lprLB->left) )
 234        lprLB->right = lprLB->left + lphc->droppedWidth;
 235
 236    TRACE(combo,"[%04x]: (%i,%i-%i,%i) placement\n",
 237                 CB_HWND(lphc), lphc->RectCombo.left, lphc->RectCombo.top,
 238                 lphc->RectCombo.right, lphc->RectCombo.bottom);
 239
 240    TRACE(combo,"\ttext\t= (%i,%i-%i,%i)\n",
 241                 lprEdit->left, lprEdit->top, lprEdit->right, lprEdit->bottom);
 242
 243    TRACE(combo,"\tbutton\t= (%i,%i-%i,%i)\n",
 244                 lprButton->left, lprButton->top, lprButton->right, lprButton->bottom);
 245
 246    TRACE(combo,"\tlbox\t= (%i,%i-%i,%i)\n",
 247                 lprLB->left, lprLB->top, lprLB->right, lprLB->bottom );
 248 }
 249
 250 /***********************************************************************
 251  *           CBGetDroppedControlRect32
 252  */
 253 static void CBGetDroppedControlRect32( LPHEADCOMBO lphc, LPRECT32 lpRect)
 254 {
 255    lpRect->left = lphc->RectCombo.left +
 256                       (lphc->wState & CBF_EDIT) ? CBitOffset : 0;
 257    lpRect->top = lphc->RectCombo.top + lphc->RectEdit.bottom -
 258                                              SYSMETRICS_CYBORDER;
 259    lpRect->right = lphc->RectCombo.right;
 260    lpRect->bottom = lphc->RectCombo.bottom - SYSMETRICS_CYBORDER;
 261 }
 262
 263 /***********************************************************************
 264  *           COMBO_Create
 265  */
 266 static LRESULT COMBO_Create( LPHEADCOMBO lphc, WND* wnd, LPARAM lParam)
 267 {
 268   static char clbName[] = "ComboLBox";
 269   static char editName[] = "Edit";
 270
 271   LPCREATESTRUCT32A  lpcs = (CREATESTRUCT32A*)lParam;
 272
 273   if( !CB_GETTYPE(lphc) ) lphc->dwStyle |= CBS_SIMPLE;
 274   else if( CB_GETTYPE(lphc) != CBS_DROPDOWNLIST ) lphc->wState |= CBF_EDIT;
 275
 276   lphc->self  = wnd;
 277   lphc->owner = lpcs->hwndParent;
 278
 279   /* M$ IE 3.01 actually creates (and rapidly destroys) an ownerless combobox */
 280
 281   if( lphc->owner || !(lpcs->style & WS_VISIBLE) )
 282   {
 283       UINT32    lbeStyle;
 284       RECT32    editRect, btnRect, lbRect;
 285
 286       GetWindowRect32( wnd->hwndSelf, &lphc->RectCombo );
 287
 288       lphc->wState |= CBF_MEASUREITEM;
 289       CBCalcPlacement( lphc, &editRect, &btnRect, &lbRect );
 290       lphc->RectButton = btnRect;
 291       lphc->droppedWidth = lphc->editHeight = 0;
 292
 293       /* create listbox popup */
 294
 295       lbeStyle = (LBS_NOTIFY | WS_BORDER | WS_CLIPSIBLINGS) |
 296                  (lpcs->style & (WS_VSCROLL | CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE));
 297
 298       if( lphc->dwStyle & CBS_SORT )
 299         lbeStyle |= LBS_SORT;
 300       if( lphc->dwStyle & CBS_HASSTRINGS )
 301         lbeStyle |= LBS_HASSTRINGS;
 302       if( lphc->dwStyle & CBS_NOINTEGRALHEIGHT )
 303         lbeStyle |= LBS_NOINTEGRALHEIGHT;
 304       if( lphc->dwStyle & CBS_DISABLENOSCROLL )
 305         lbeStyle |= LBS_DISABLENOSCROLL;
 306
 307       if( CB_GETTYPE(lphc) == CBS_SIMPLE )      /* child listbox */
 308         lbeStyle |= WS_CHILD | WS_VISIBLE;
 309       else                                      /* popup listbox */
 310       {
 311         lbeStyle |= WS_POPUP;
 312         OffsetRect32( &lbRect, lphc->RectCombo.left, lphc->RectCombo.top );
 313       }
 314
 315      /* Dropdown ComboLBox is not a child window and we cannot pass
 316       * ID_CB_LISTBOX directly because it will be treated as a menu handle.
 317       */
 318
 319       lphc->hWndLBox = CreateWindowEx32A( 0, clbName, NULL, lbeStyle,
 320                         lbRect.left + SYSMETRICS_CXBORDER,
 321                         lbRect.top + SYSMETRICS_CYBORDER,
 322                         lbRect.right - lbRect.left - 2 * SYSMETRICS_CXBORDER,
 323                         lbRect.bottom - lbRect.top - 2 * SYSMETRICS_CYBORDER,
 324                         lphc->self->hwndSelf,
 325                        (lphc->dwStyle & CBS_DROPDOWN)? (HMENU32)0 : (HMENU32)ID_CB_LISTBOX,
 326                         lphc->self->hInstance, (LPVOID)lphc );
 327       if( lphc->hWndLBox )
 328       {
 329           BOOL32        bEdit = TRUE;
 330           lbeStyle = WS_CHILD | WS_VISIBLE | WS_BORDER | ES_NOHIDESEL | ES_LEFT;
 331           if( lphc->wState & CBF_EDIT )
 332           {
 333               if( lphc->dwStyle & CBS_OEMCONVERT )
 334                   lbeStyle |= ES_OEMCONVERT;
 335               if( lphc->dwStyle & CBS_AUTOHSCROLL )
 336                   lbeStyle |= ES_AUTOHSCROLL;
 337               if( lphc->dwStyle & CBS_LOWERCASE )
 338                   lbeStyle |= ES_LOWERCASE;
 339               else if( lphc->dwStyle & CBS_UPPERCASE )
 340                   lbeStyle |= ES_UPPERCASE;
 341               lphc->hWndEdit = CreateWindowEx32A( 0, editName, NULL, lbeStyle,
 342                         editRect.left, editRect.top, editRect.right - editRect.left,
 343                         editRect.bottom - editRect.top, lphc->self->hwndSelf,
 344                         (HMENU32)ID_CB_EDIT, lphc->self->hInstance, NULL );
 345               if( !lphc->hWndEdit ) bEdit = FALSE;
 346           }
 347
 348           if( bEdit )
 349           {
 350               lphc->RectEdit = editRect;
 351               if( CB_GETTYPE(lphc) != CBS_SIMPLE )
 352               {
 353                 lphc->wState |= CBF_NORESIZE;
 354                 SetWindowPos32( wnd->hwndSelf, 0, 0, 0,
 355                                 lphc->RectCombo.right - lphc->RectCombo.left,
 356                                 lphc->RectEdit.bottom - lphc->RectEdit.top,
 357                                 SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE );
 358                 lphc->wState &= ~CBF_NORESIZE;
 359               }
 360               TRACE(combo,"init done\n");
 361               return wnd->hwndSelf;
 362           }
 363           ERR(combo, "edit control failure.\n");
 364       } else ERR(combo, "listbox failure.\n");
 365   } else ERR(combo, "no owner for visible combo.\n");
 366
 367   /* CreateWindow() will send WM_NCDESTROY to cleanup */
 368
 369   return -1;
 370 }
 371
 372 /***********************************************************************
 373  *           CBPaintButton
 374  *
 375  * Paint combo button (normal, pressed, and disabled states).
 376  */
 377 static void CBPaintButton(LPHEADCOMBO lphc, HDC32 hdc)
 378 {
 379     RECT32      r;
 380     HBRUSH32    hPrevBrush;
 381     UINT32      x, y;
 382     BOOL32      bBool;
 383
 384     if( lphc->wState & CBF_NOREDRAW ) return;
 385
 386     hPrevBrush = (HBRUSH32)SelectObject32(hdc, GetSysColorBrush32(COLOR_BTNFACE));
 387     CONV_RECT16TO32( &lphc->RectButton, &r );
 388
 389     Rectangle32(hdc, r.left, r.top, r.right, r.bottom );
 390     InflateRect32( &r, -1, -1 );
 391     if( (bBool = lphc->wState & CBF_BUTTONDOWN) )
 392     {
 393         GRAPH_DrawReliefRect(hdc, &r, 1, 0, TRUE);
 394         OffsetRect32( &r, 1, 1 );
 395     } else GRAPH_DrawReliefRect(hdc, &r, 1, 2, FALSE);
 396
 397     x = (r.left + r.right - CBitWidth) >> 1;
 398     y = (r.top + r.bottom - CBitHeight) >> 1;
 399
 400     InflateRect32( &r, -3, -3 );
 401     if( (bBool = CB_DISABLED(lphc)) )
 402     {
 403         GRAPH_SelectClipMask(hdc, hComboBmp, x + 1, y + 1 );
 404         FillRect32(hdc, &r, (HBRUSH32)GetStockObject32(WHITE_BRUSH));
 405     }
 406
 407     GRAPH_SelectClipMask(hdc, hComboBmp, x, y );
 408     FillRect32(hdc, &r, (HBRUSH32)GetStockObject32((bBool) ? GRAY_BRUSH : BLACK_BRUSH));
 409
 410     GRAPH_SelectClipMask(hdc, (HBITMAP32)0, 0, 0);
 411     SelectObject32( hdc, hPrevBrush );
 412 }
 413
 414 /***********************************************************************
 415  *           CBPaintText
 416  *
 417  * Paint CBS_DROPDOWNLIST text field / update edit control contents.
 418  */
 419 static void CBPaintText(LPHEADCOMBO lphc, HDC32 hdc)
 420 {
 421    INT32        id, size = 0;
 422    LPSTR        pText = NULL;
 423
 424    if( lphc->wState & CBF_NOREDRAW ) return;
 425
 426    /* follow Windows combobox that sends a bunch of text
 427     * inquiries to its listbox while processing WM_PAINT. */
 428
 429    if( (id = SendMessage32A(lphc->hWndLBox, LB_GETCURSEL32, 0, 0) ) != LB_ERR )
 430    {
 431         size = SendMessage32A( lphc->hWndLBox, LB_GETTEXTLEN32, id, 0);
 432         if( (pText = HeapAlloc( GetProcessHeap(), 0, size + 1)) )
 433         {
 434             SendMessage32A( lphc->hWndLBox, LB_GETTEXT32, (WPARAM32)id, (LPARAM)pText );
 435             pText[size] = '\0'; /* just in case */
 436         } else return;
 437    }
 438
 439    if( lphc->wState & CBF_EDIT )
 440    {
 441         if( CB_HASSTRINGS(lphc) ) SetWindowText32A( lphc->hWndEdit, pText ? pText : "" );
 442         if( lphc->wState & CBF_FOCUSED )
 443             SendMessage32A( lphc->hWndEdit, EM_SETSEL32, 0, (LPARAM)(-1));
 444    }
 445    else /* paint text field ourselves */
 446    {
 447         HBRUSH32 hPrevBrush = 0;
 448         HDC32    hDC = hdc;
 449
 450         if( !hDC )
 451         {
 452             if ((hDC = GetDC32(lphc->self->hwndSelf)))
 453             {
 454                 HBRUSH32 hBrush = SendMessage32A( lphc->owner,
 455                                                   WM_CTLCOLORLISTBOX,
 456                                                   hDC, lphc->self->hwndSelf );
 457                 hPrevBrush = SelectObject32( hDC,
 458                            (hBrush) ? hBrush : GetStockObject32(WHITE_BRUSH) );
 459             }
 460         }
 461         if( hDC )
 462         {
 463             RECT32      rect;
 464             UINT32      itemState;
 465             HFONT32     hPrevFont = (lphc->hFont) ? SelectObject32(hDC, lphc->hFont) : 0;
 466
 467             PatBlt32( hDC, (rect.left = lphc->RectEdit.left + SYSMETRICS_CXBORDER),
 468                            (rect.top = lphc->RectEdit.top + SYSMETRICS_CYBORDER),
 469                            (rect.right = lphc->RectEdit.right - SYSMETRICS_CXBORDER),
 470                            (rect.bottom = lphc->RectEdit.bottom - SYSMETRICS_CYBORDER) - 1, PATCOPY );
 471             InflateRect32( &rect, -1, -1 );
 472
 473             if( lphc->wState & CBF_FOCUSED &&
 474                 !(lphc->wState & CBF_DROPPED) )
 475             {
 476                 /* highlight */
 477
 478                 FillRect32( hDC, &rect, GetSysColorBrush32(COLOR_HIGHLIGHT) );
 479                 SetBkColor32( hDC, GetSysColor32( COLOR_HIGHLIGHT ) );
 480                 SetTextColor32( hDC, GetSysColor32( COLOR_HIGHLIGHTTEXT ) );
 481                 itemState = ODS_SELECTED | ODS_FOCUS;
 482             } else itemState = 0;
 483
 484             if( CB_OWNERDRAWN(lphc) )
 485             {
 486                 DRAWITEMSTRUCT32 dis;
 487
 488                 if( lphc->self->dwStyle & WS_DISABLED ) itemState |= ODS_DISABLED;
 489
 490                 dis.CtlType     = ODT_COMBOBOX;
 491                 dis.CtlID       = lphc->self->wIDmenu;
 492                 dis.hwndItem    = lphc->self->hwndSelf;
 493                 dis.itemAction  = ODA_DRAWENTIRE;
 494                 dis.itemID      = id;
 495                 dis.itemState   = itemState;
 496                 dis.hDC         = hDC;
 497                 dis.rcItem      = rect;
 498                 dis.itemData    = SendMessage32A( lphc->hWndLBox, LB_GETITEMDATA32,
 499                                                                   (WPARAM32)id, 0 );
 500                 SendMessage32A( lphc->owner, WM_DRAWITEM,
 501                                 lphc->self->wIDmenu, (LPARAM)&dis );
 502             }
 503             else
 504             {
 505                 ExtTextOut32A( hDC, rect.left + 1, rect.top + 1,
 506                                ETO_OPAQUE | ETO_CLIPPED, &rect,
 507                                pText ? pText : "" , size, NULL );
 508                 if(lphc->wState & CBF_FOCUSED && !(lphc->wState & CBF_DROPPED))
 509                     DrawFocusRect32( hDC, &rect );
 510             }
 511
 512             if( hPrevFont ) SelectObject32(hDC, hPrevFont );
 513             if( !hdc )
 514             {
 515                 if( hPrevBrush ) SelectObject32( hDC, hPrevBrush );
 516                 ReleaseDC32( lphc->self->hwndSelf, hDC );
 517             }
 518         }
 519    }
 520    if (pText)
 521         HeapFree( GetProcessHeap(), 0, pText );
 522 }
 523
 524 /***********************************************************************
 525  *           COMBO_Paint
 526  */
 527 static LRESULT COMBO_Paint(LPHEADCOMBO lphc, HDC32 hParamDC)
 528 {
 529   PAINTSTRUCT32 ps;
 530   HDC32         hDC;
 531
 532   hDC = (hParamDC) ? hParamDC
 533                    : BeginPaint32( lphc->self->hwndSelf, &ps);
 534   if( hDC && !(lphc->wState & CBF_NOREDRAW) )
 535   {
 536       HBRUSH32  hPrevBrush, hBkgBrush;
 537
 538       hBkgBrush = SendMessage32A( lphc->owner, WM_CTLCOLORLISTBOX,
 539                                   hDC, lphc->self->hwndSelf );
 540       if( !hBkgBrush ) hBkgBrush = GetStockObject32(WHITE_BRUSH);
 541
 542       hPrevBrush = SelectObject32( hDC, hBkgBrush );
 543       if( !IsRectEmpty32(&lphc->RectButton) )
 544       {
 545           /* paint everything to the right of the text field */
 546
 547           PatBlt32( hDC, lphc->RectEdit.right, lphc->RectEdit.top,
 548                          lphc->RectButton.right - lphc->RectEdit.right,
 549                          lphc->RectEdit.bottom - lphc->RectEdit.top, PATCOPY );
 550           CBPaintButton( lphc, hDC );
 551       }
 552
 553       if( !(lphc->wState & CBF_EDIT) )
 554       {
 555           /* paint text field */
 556
 557           GRAPH_DrawRectangle( hDC, lphc->RectEdit.left, lphc->RectEdit.top,
 558                                     lphc->RectEdit.right - lphc->RectEdit.left,
 559                                     lphc->RectButton.bottom - lphc->RectButton.top,
 560                                     GetSysColorPen32(COLOR_WINDOWFRAME) );
 561           CBPaintText( lphc, hDC );
 562       }
 563       if( hPrevBrush ) SelectObject32( hDC, hPrevBrush );
 564   }
 565   if( !hParamDC ) EndPaint32(lphc->self->hwndSelf, &ps);
 566   return 0;
 567 }
 568
 569 /***********************************************************************
 570  *           CBUpdateLBox
 571  *
 572  * Select listbox entry according to the contents of the edit control.
 573  */
 574 static INT32 CBUpdateLBox( LPHEADCOMBO lphc )
 575 {
 576    INT32        length, idx, ret;
 577    LPSTR        pText = NULL;
 578
 579    idx = ret = LB_ERR;
 580    length = CB_GETEDITTEXTLENGTH( lphc );
 581
 582    if( length > 0 )
 583        pText = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1);
 584
 585    TRACE(combo,"\t edit text length %i\n", length );
 586
 587    if( pText )
 588    {
 589        if( length ) GetWindowText32A( lphc->hWndEdit, pText, length + 1);
 590        else pText[0] = '\0';
 591        idx = SendMessage32A( lphc->hWndLBox, LB_FINDSTRING32,
 592                              (WPARAM32)(-1), (LPARAM)pText );
 593        if( idx == LB_ERR ) idx = 0;     /* select first item */
 594        else ret = idx;
 595        HeapFree( GetProcessHeap(), 0, pText );
 596    }
 597
 598    /* select entry */
 599
 600    SendMessage32A( lphc->hWndLBox, LB_SETCURSEL32, (WPARAM32)idx, 0 );
 601
 602    if( idx >= 0 )
 603    {
 604        SendMessage32A( lphc->hWndLBox, LB_SETTOPINDEX32, (WPARAM32)idx, 0 );
 605        /* probably superfluous but Windows sends this too */
 606        SendMessage32A( lphc->hWndLBox, LB_SETCARETINDEX32, (WPARAM32)idx, 0 );
 607    }
 608    return ret;
 609 }
 610
 611 /***********************************************************************
 612  *           CBUpdateEdit
 613  *
 614  * Copy a listbox entry to the edit control.
 615  */
 616 static void CBUpdateEdit( LPHEADCOMBO lphc , INT32 index )
 617 {
 618    INT32        length;
 619    LPSTR        pText = NULL;
 620
 621    TRACE(combo,"\t %i\n", index );
 622
 623    if( index == -1 )
 624    {
 625        length = CB_GETEDITTEXTLENGTH( lphc );
 626        if( length )
 627        {
 628            if( (pText = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1)) )
 629            {
 630                 GetWindowText32A( lphc->hWndEdit, pText, length + 1 );
 631                 index = SendMessage32A( lphc->hWndLBox, LB_FINDSTRING32,
 632                                         (WPARAM32)(-1), (LPARAM)pText );
 633                 HeapFree( GetProcessHeap(), 0, pText );
 634            }
 635        }
 636    }
 637
 638    if( index >= 0 ) /* got an entry */
 639    {
 640        length = SendMessage32A( lphc->hWndLBox, LB_GETTEXTLEN32, (WPARAM32)index, 0);
 641        if( length )
 642        {
 643            if( (pText = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1)) )
 644            {
 645                 SendMessage32A( lphc->hWndLBox, LB_GETTEXT32,
 646                                 (WPARAM32)index, (LPARAM)pText );
 647                 SendMessage32A( lphc->hWndEdit, WM_SETTEXT, 0, (LPARAM)pText );
 648                 SendMessage32A( lphc->hWndEdit, EM_SETSEL32, 0, (LPARAM)(-1) );
 649                 HeapFree( GetProcessHeap(), 0, pText );
 650            }
 651        }
 652    }
 653 }
 654
 655 /***********************************************************************
 656  *           CBDropDown
 657  *
 658  * Show listbox popup.
 659  */
 660 static void CBDropDown( LPHEADCOMBO lphc )
 661 {
 662    INT32        index;
 663    RECT32       rect;
 664    LPRECT32     pRect = NULL;
 665
 666    TRACE(combo,"[%04x]: drop down\n", CB_HWND(lphc));
 667
 668    CB_NOTIFY( lphc, CBN_DROPDOWN );
 669
 670    /* set selection */
 671
 672    lphc->wState |= CBF_DROPPED;
 673    if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
 674    {
 675        index = CBUpdateLBox( lphc );
 676        if( !(lphc->wState & CBF_CAPTURE) ) CBUpdateEdit( lphc, index );
 677    }
 678    else
 679    {
 680        index = SendMessage32A( lphc->hWndLBox, LB_GETCURSEL32, 0, 0 );
 681        if( index == LB_ERR ) index = 0;
 682        SendMessage32A( lphc->hWndLBox, LB_SETTOPINDEX32, (WPARAM32)index, 0 );
 683        SendMessage32A( lphc->hWndLBox, LB_CARETON32, 0, 0 );
 684        pRect = &lphc->RectEdit;
 685    }
 686
 687    /* now set popup position */
 688
 689    GetWindowRect32( lphc->self->hwndSelf, &rect );
 690
 691    rect.top += lphc->RectEdit.bottom - lphc->RectEdit.top - SYSMETRICS_CYBORDER;
 692    rect.bottom = rect.top + lphc->RectCombo.bottom -
 693                             lphc->RectCombo.top - SYSMETRICS_CYBORDER;
 694    rect.right = rect.left + lphc->RectCombo.right - lphc->RectCombo.left;
 695    rect.left += ( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST ) ? 0 : CBitOffset;
 696
 697    SetWindowPos32( lphc->hWndLBox, HWND_TOP, rect.left, rect.top,
 698                  rect.right - rect.left, rect.bottom - rect.top,
 699                  SWP_NOACTIVATE | SWP_NOSIZE | SWP_NOREDRAW);
 700
 701    if( !(lphc->wState & CBF_NOREDRAW) )
 702        if( pRect )
 703            RedrawWindow32( lphc->self->hwndSelf, pRect, 0, RDW_INVALIDATE |
 704                            RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );
 705    ShowWindow32( lphc->hWndLBox, SW_SHOWNA );
 706 }
 707
 708 /***********************************************************************
 709  *           CBRollUp
 710  *
 711  * Hide listbox popup.
 712  */
 713 static void CBRollUp( LPHEADCOMBO lphc, BOOL32 ok, BOOL32 bButton )
 714 {
 715    HWND32       hWnd = lphc->self->hwndSelf;
 716
 717    CB_NOTIFY( lphc, (ok) ? CBN_SELENDOK : CBN_SELENDCANCEL );
 718
 719    if( IsWindow32( hWnd ) && CB_GETTYPE(lphc) != CBS_SIMPLE )
 720    {
 721
 722        TRACE(combo,"[%04x]: roll up [%i]\n", CB_HWND(lphc), (INT32)ok );
 723
 724        /* always send WM_LBUTTONUP? */
 725        SendMessage32A( lphc->hWndLBox, WM_LBUTTONUP, 0, (LPARAM)(-1) );
 726
 727        if( lphc->wState & CBF_DROPPED )
 728        {
 729            RECT32       rect;
 730
 731            lphc->wState &= ~CBF_DROPPED;
 732            ShowWindow32( lphc->hWndLBox, SW_HIDE );
 733
 734            if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
 735            {
 736                INT32 index = SendMessage32A( lphc->hWndLBox, LB_GETCURSEL32, 0, 0 );
 737                CBUpdateEdit( lphc, index );
 738                rect = lphc->RectButton;
 739            }
 740            else
 741            {
 742                if( bButton )
 743                    UnionRect32( &rect, &lphc->RectButton,
 744                                        &lphc->RectEdit );
 745                else
 746                    rect = lphc->RectEdit;
 747                bButton = TRUE;
 748            }
 749
 750            if( bButton && !(lphc->wState & CBF_NOREDRAW) )
 751                RedrawWindow32( hWnd, &rect, 0, RDW_INVALIDATE |
 752                                RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );
 753            CB_NOTIFY( lphc, CBN_CLOSEUP );
 754        }
 755    }
 756 }
 757
 758 /***********************************************************************
 759  *           COMBO_FlipListbox
 760  *
 761  * Used by the ComboLBox to show/hide itself in response to VK_F4, etc...
 762  */
 763 BOOL32 COMBO_FlipListbox( LPHEADCOMBO lphc, BOOL32 bRedrawButton )
 764 {
 765    if( lphc->wState & CBF_DROPPED )
 766    {
 767        CBRollUp( lphc, TRUE, bRedrawButton );
 768        return FALSE;
 769    }
 770
 771    CBDropDown( lphc );
 772    return TRUE;
 773 }
 774
 775 /***********************************************************************
 776  *           COMBO_GetLBWindow
 777  *
 778  * Edit control helper.
 779  */
 780 HWND32 COMBO_GetLBWindow( WND* pWnd )
 781 {
 782   LPHEADCOMBO       lphc = CB_GETPTR(pWnd);
 783   if( lphc ) return lphc->hWndLBox;
 784   return 0;
 785 }
 786
 787
 788 /***********************************************************************
 789  *           CBRepaintButton
 790  */
 791 static void CBRepaintButton( LPHEADCOMBO lphc )
 792 {
 793    HDC32        hDC = GetDC32( lphc->self->hwndSelf );
 794
 795    if( hDC )
 796    {
 797        CBPaintButton( lphc, hDC );
 798        ReleaseDC32( lphc->self->hwndSelf, hDC );
 799    }
 800 }
 801
 802 /***********************************************************************
 803  *           COMBO_SetFocus
 804  */
 805 static void COMBO_SetFocus( LPHEADCOMBO lphc )
 806 {
 807    if( !(lphc->wState & CBF_FOCUSED) )
 808    {
 809        if( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST )
 810            SendMessage32A( lphc->hWndLBox, LB_CARETON32, 0, 0 );
 811
 812        if( lphc->wState & CBF_EDIT )
 813            SendMessage32A( lphc->hWndEdit, EM_SETSEL32, 0, (LPARAM)(-1) );
 814        lphc->wState |= CBF_FOCUSED;
 815        if( !(lphc->wState & CBF_EDIT) ) CBPaintText( lphc, 0 );
 816
 817        CB_NOTIFY( lphc, CBN_SETFOCUS );
 818    }
 819 }
 820
 821 /***********************************************************************
 822  *           COMBO_KillFocus
 823  */
 824 static void COMBO_KillFocus( LPHEADCOMBO lphc )
 825 {
 826    HWND32       hWnd = lphc->self->hwndSelf;
 827
 828    if( lphc->wState & CBF_FOCUSED )
 829    {
 830        SendMessage32A( hWnd, WM_LBUTTONUP, 0, (LPARAM)(-1) );
 831
 832        CBRollUp( lphc, FALSE, TRUE );
 833        if( IsWindow32( hWnd ) )
 834        {
 835            if( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST )
 836                SendMessage32A( lphc->hWndLBox, LB_CARETOFF32, 0, 0 );
 837
 838            lphc->wState &= ~CBF_FOCUSED;
 839
 840            /* redraw text */
 841            if( lphc->wState & CBF_EDIT )
 842                SendMessage32A( lphc->hWndEdit, EM_SETSEL32, (WPARAM32)(-1), 0 );
 843            else CBPaintText( lphc, 0 );
 844
 845            CB_NOTIFY( lphc, CBN_KILLFOCUS );
 846        }
 847    }
 848 }
 849
 850 /***********************************************************************
 851  *           COMBO_Command
 852  */
 853 static LRESULT COMBO_Command( LPHEADCOMBO lphc, WPARAM32 wParam, HWND32 hWnd )
 854 {
 855    if( lphc->wState & CBF_EDIT && lphc->hWndEdit == hWnd )
 856    {
 857        /* ">> 8" makes gcc generate jump-table instead of cmp ladder */
 858
 859        switch( HIWORD(wParam) >> 8 )
 860        {
 861            case (EN_SETFOCUS >> 8):
 862
 863                 TRACE(combo,"[%04x]: edit [%04x] got focus\n",
 864                              CB_HWND(lphc), lphc->hWndEdit );
 865
 866                 if( !(lphc->wState & CBF_FOCUSED) ) COMBO_SetFocus( lphc );
 867                 break;
 868
 869            case (EN_KILLFOCUS >> 8):
 870
 871                 TRACE(combo,"[%04x]: edit [%04x] lost focus\n",
 872                              CB_HWND(lphc), lphc->hWndEdit );
 873
 874                 /* NOTE: it seems that Windows' edit control sends an
 875                  * undocumented message WM_USER + 0x1B instead of this
 876                  * notification (only when it happens to be a part of
 877                  * the combo). ?? - AK.
 878                  */
 879
 880                 COMBO_KillFocus( lphc );
 881                 break;
 882
 883
 884            case (EN_CHANGE >> 8):
 885                 CB_NOTIFY( lphc, CBN_EDITCHANGE );
 886                 CBUpdateLBox( lphc );
 887                 break;
 888
 889            case (EN_UPDATE >> 8):
 890                 CB_NOTIFY( lphc, CBN_EDITUPDATE );
 891                 break;
 892
 893            case (EN_ERRSPACE >> 8):
 894                 CB_NOTIFY( lphc, CBN_ERRSPACE );
 895        }
 896    }
 897    else if( lphc->hWndLBox == hWnd )
 898    {
 899        switch( HIWORD(wParam) )
 900        {
 901            case LBN_ERRSPACE:
 902                 CB_NOTIFY( lphc, CBN_ERRSPACE );
 903                 break;
 904
 905            case LBN_DBLCLK:
 906                 CB_NOTIFY( lphc, CBN_DBLCLK );
 907                 break;
 908
 909            case LBN_SELCHANGE:
 910            case LBN_SELCANCEL:
 911
 912                 TRACE(combo,"[%04x]: lbox selection change [%04x]\n",
 913                              CB_HWND(lphc), lphc->wState );
 914
 915                 /* do not roll up if selection is being tracked
 916                  * by arrowkeys in the dropdown listbox */
 917
 918                 if( (lphc->wState & CBF_DROPPED) && !(lphc->wState & CBF_NOROLLUP) )
 919                      CBRollUp( lphc, (HIWORD(wParam) == LBN_SELCHANGE), TRUE );
 920                 else lphc->wState &= ~CBF_NOROLLUP;
 921
 922                 CB_NOTIFY( lphc, CBN_SELCHANGE );
 923                 CBPaintText( lphc, 0 );
 924                 /* fall through */
 925
 926            case LBN_SETFOCUS:
 927            case LBN_KILLFOCUS:
 928                 /* nothing to do here since ComboLBox always resets the focus to its
 929                  * combo/edit counterpart */
 930                  break;
 931        }
 932    }
 933    return 0;
 934 }
 935
 936 /***********************************************************************
 937  *           COMBO_ItemOp
 938  *
 939  * Fixup an ownerdrawn item operation and pass it up to the combobox owner.
 940  */
 941 static LRESULT COMBO_ItemOp32( LPHEADCOMBO lphc, UINT32 msg,
 942                                WPARAM32 wParam, LPARAM lParam )
 943 {
 944    HWND32       hWnd = lphc->self->hwndSelf;
 945
 946    TRACE(combo,"[%04x]: ownerdraw op %04x\n", CB_HWND(lphc), msg );
 947
 948 #define lpIS    ((LPDELETEITEMSTRUCT32)lParam)
 949
 950    /* two first items are the same in all 4 structs */
 951    lpIS->CtlType = ODT_COMBOBOX;
 952    lpIS->CtlID   = lphc->self->wIDmenu;
 953
 954    switch( msg )        /* patch window handle */
 955    {
 956         case WM_DELETEITEM:
 957              lpIS->hwndItem = hWnd;
 958 #undef  lpIS
 959              break;
 960         case WM_DRAWITEM:
 961 #define lpIS    ((LPDRAWITEMSTRUCT32)lParam)
 962              lpIS->hwndItem = hWnd;
 963 #undef  lpIS
 964              break;
 965         case WM_COMPAREITEM:
 966 #define lpIS    ((LPCOMPAREITEMSTRUCT32)lParam)
 967              lpIS->hwndItem = hWnd;
 968 #undef  lpIS
 969              break;
 970    }
 971
 972    return SendMessage32A( lphc->owner, msg, lphc->self->wIDmenu, lParam );
 973 }
 974
 975 /***********************************************************************
 976  *           COMBO_GetText
 977  */
 978 static LRESULT COMBO_GetText( LPHEADCOMBO lphc, UINT32 N, LPSTR lpText)
 979 {
 980    if( lphc->wState & CBF_EDIT )
 981        return SendMessage32A( lphc->hWndEdit, WM_GETTEXT,
 982                              (WPARAM32)N, (LPARAM)lpText );
 983
 984    /* get it from the listbox */
 985
 986    if( lphc->hWndLBox )
 987    {
 988        INT32 idx = SendMessage32A( lphc->hWndLBox, LB_GETCURSEL32, 0, 0 );
 989        if( idx != LB_ERR )
 990        {
 991            LPSTR        lpBuffer;
 992            INT32        length = SendMessage32A( lphc->hWndLBox, LB_GETTEXTLEN32,
 993                                                 (WPARAM32)idx, 0 );
 994
 995            /* 'length' is without the terminating character */
 996            if( length >= N )
 997                lpBuffer = (LPSTR) HeapAlloc( GetProcessHeap(), 0, length + 1 );
 998            else
 999                lpBuffer = lpText;
1000
1001            if( lpBuffer )
1002            {
1003                INT32    n = SendMessage32A( lphc->hWndLBox, LB_GETTEXT32,
1004                                            (WPARAM32)idx, (LPARAM)lpText );
1005
1006                /* truncate if buffer is too short */
1007
1008                if( length >= N )
1009                {
1010                    if( n != LB_ERR ) memcpy( lpText, lpBuffer, (N>n) ? n+1 : N-1 );
1011                    lpText[N - 1] = '\0';
1012                    HeapFree( GetProcessHeap(), 0, lpBuffer );
1013                }
1014                return (LRESULT)n;
1015            }
1016        }
1017    }
1018    return 0;
1019 }
1020
1021
1022 /***********************************************************************
1023  *           CBResetPos
1024  *
1025  * This function sets window positions according to the updated
1026  * component placement struct.
1027  */
1028 static void CBResetPos( LPHEADCOMBO lphc, LPRECT32 lbRect, BOOL32 bRedraw )
1029 {
1030    BOOL32       bDrop = (CB_GETTYPE(lphc) != CBS_SIMPLE);
1031
1032    /* NOTE: logs sometimes have WM_LBUTTONUP before a cascade of
1033     * sizing messages */
1034
1035    if( lphc->wState & CBF_EDIT )
1036        SetWindowPos32( lphc->hWndEdit, 0, lphc->RectEdit.left, lphc->RectEdit.top,
1037                        lphc->RectEdit.right - lphc->RectEdit.left,
1038                        lphc->RectEdit.bottom - lphc->RectEdit.top,
1039                        SWP_NOZORDER | SWP_NOACTIVATE | ((bDrop) ? SWP_NOREDRAW : 0) );
1040
1041    if( bDrop )
1042        OffsetRect32( lbRect, lphc->RectCombo.left, lphc->RectCombo.top );
1043
1044    lbRect->right -= lbRect->left;       /* convert to width */
1045    lbRect->bottom -= lbRect->top;
1046    SetWindowPos32( lphc->hWndLBox, 0, lbRect->left, lbRect->top,
1047                    lbRect->right, lbRect->bottom,
1048                    SWP_NOACTIVATE | SWP_NOZORDER | ((bDrop) ? SWP_NOREDRAW : 0) );
1049
1050    if( bDrop )
1051    {
1052        if( lphc->wState & CBF_DROPPED )
1053        {
1054            lphc->wState &= ~CBF_DROPPED;
1055            ShowWindow32( lphc->hWndLBox, SW_HIDE );
1056        }
1057
1058        lphc->wState |= CBF_NORESIZE;
1059        SetWindowPos32( lphc->self->hwndSelf, 0, 0, 0,
1060                        lphc->RectCombo.right - lphc->RectCombo.left,
1061                        lphc->RectEdit.bottom - lphc->RectEdit.top,
1062                        SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW );
1063        lphc->wState &= ~CBF_NORESIZE;
1064
1065        if( bRedraw && !(lphc->wState & CBF_NOREDRAW) )
1066            RedrawWindow32( lphc->self->hwndSelf, NULL, 0,
1067                            RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW );
1068    }
1069 }
1070
1071
1072 /***********************************************************************
1073  *           COMBO_Size
1074  */
1075 static void COMBO_Size( LPHEADCOMBO lphc )
1076 {
1077   RECT32        rect;
1078   INT32         w, h;
1079
1080   GetWindowRect32( lphc->self->hwndSelf, &rect );
1081   w = rect.right - rect.left; h = rect.bottom - rect.top;
1082
1083   TRACE(combo,"w = %i, h = %i\n", w, h );
1084
1085   /* CreateWindow() may send a bogus WM_SIZE, ignore it */
1086
1087   if( w == (lphc->RectCombo.right - lphc->RectCombo.left) )
1088   {
1089       if( (CB_GETTYPE(lphc) == CBS_SIMPLE) &&
1090           (h == (lphc->RectCombo.bottom - lphc->RectCombo.top)) )
1091           return;
1092       else if( (lphc->dwStyle & CBS_DROPDOWN) &&
1093                (h == (lphc->RectEdit.bottom - lphc->RectEdit.top))  )
1094                return;
1095   }
1096   lphc->RectCombo = rect;
1097   CBCalcPlacement( lphc, &lphc->RectEdit, &lphc->RectButton, &rect );
1098   CBResetPos( lphc, &rect, TRUE );
1099 }
1100
1101
1102 /***********************************************************************
1103  *           COMBO_Font
1104  */
1105 static void COMBO_Font( LPHEADCOMBO lphc, HFONT32 hFont, BOOL32 bRedraw )
1106 {
1107   RECT32        rect;
1108
1109   lphc->hFont = hFont;
1110
1111   if( lphc->wState & CBF_EDIT )
1112       SendMessage32A( lphc->hWndEdit, WM_SETFONT, (WPARAM32)hFont, bRedraw );
1113   SendMessage32A( lphc->hWndLBox, WM_SETFONT, (WPARAM32)hFont, bRedraw );
1114
1115   GetWindowRect32( lphc->self->hwndSelf, &rect );
1116   OffsetRect32( &lphc->RectCombo, rect.left - lphc->RectCombo.left,
1117                                   rect.top - lphc->RectCombo.top );
1118   CBCalcPlacement( lphc, &lphc->RectEdit,
1119                          &lphc->RectButton, &rect );
1120   CBResetPos( lphc, &rect, bRedraw );
1121 }
1122
1123
1124 /***********************************************************************
1125  *           COMBO_SetItemHeight
1126  */
1127 static LRESULT COMBO_SetItemHeight( LPHEADCOMBO lphc, INT32 index, INT32 height )
1128 {
1129    LRESULT      lRet = CB_ERR;
1130
1131    if( index == -1 ) /* set text field height */
1132    {
1133        if( height < 32768 )
1134        {
1135            RECT32       rect;
1136
1137            lphc->editHeight = height;
1138            GetWindowRect32( lphc->self->hwndSelf, &rect );
1139            OffsetRect32( &lphc->RectCombo, rect.left - lphc->RectCombo.left,
1140                                            rect.top - lphc->RectCombo.top );
1141            CBCalcPlacement( lphc, &lphc->RectEdit,
1142                                   &lphc->RectButton, &rect );
1143            CBResetPos( lphc, &rect, TRUE );
1144            lRet = height;
1145        }
1146    }
1147    else if ( CB_OWNERDRAWN(lphc) )      /* set listbox item height */
1148         lRet = SendMessage32A( lphc->hWndLBox, LB_SETITEMHEIGHT32,
1149                               (WPARAM32)index, (LPARAM)height );
1150    return lRet;
1151 }
1152
1153 /***********************************************************************
1154  *           COMBO_SelectString
1155  */
1156 static LRESULT COMBO_SelectString( LPHEADCOMBO lphc, INT32 start, LPCSTR pText )
1157 {
1158    INT32 index = SendMessage32A( lphc->hWndLBox, LB_SELECTSTRING32,
1159                                  (WPARAM32)start, (LPARAM)pText );
1160    if( index >= 0 )
1161    {
1162         if( lphc->wState & CBF_EDIT )
1163             CBUpdateEdit( lphc, index );
1164         else
1165             CBPaintText( lphc, 0 );
1166    }
1167    return (LRESULT)index;
1168 }
1169
1170 /***********************************************************************
1171  *           COMBO_LButtonDown
1172  */
1173 static void COMBO_LButtonDown( LPHEADCOMBO lphc, LPARAM lParam )
1174 {
1175    POINT32     pt = { LOWORD(lParam), HIWORD(lParam) };
1176    BOOL32      bButton = PtInRect32(&lphc->RectButton, pt);
1177    HWND32      hWnd = lphc->self->hwndSelf;
1178
1179    if( (CB_GETTYPE(lphc) == CBS_DROPDOWNLIST) ||
1180        (bButton && (CB_GETTYPE(lphc) == CBS_DROPDOWN)) )
1181    {
1182        lphc->wState |= CBF_BUTTONDOWN;
1183        if( lphc->wState & CBF_DROPPED )
1184        {
1185            /* got a click to cancel selection */
1186
1187            CBRollUp( lphc, TRUE, FALSE );
1188            if( !IsWindow32( hWnd ) ) return;
1189
1190            if( lphc->wState & CBF_CAPTURE )
1191            {
1192                lphc->wState &= ~CBF_CAPTURE;
1193                ReleaseCapture();
1194            }
1195            lphc->wState &= ~CBF_BUTTONDOWN;
1196        }
1197        else
1198        {
1199            /* drop down the listbox and start tracking */
1200
1201            lphc->wState |= CBF_CAPTURE;
1202            CBDropDown( lphc );
1203            SetCapture32( hWnd );
1204        }
1205        if( bButton ) CBRepaintButton( lphc );
1206    }
1207 }
1208
1209 /***********************************************************************
1210  *           COMBO_LButtonUp
1211  *
1212  * Release capture and stop tracking if needed.
1213  */
1214 static void COMBO_LButtonUp( LPHEADCOMBO lphc, LPARAM lParam )
1215 {
1216    if( lphc->wState & CBF_CAPTURE )
1217    {
1218        lphc->wState &= ~CBF_CAPTURE;
1219        if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1220        {
1221            INT32 index = CBUpdateLBox( lphc );
1222            CBUpdateEdit( lphc, index );
1223        }
1224        ReleaseCapture();
1225    }
1226
1227    if( lphc->wState & CBF_BUTTONDOWN )
1228    {
1229        lphc->wState &= ~CBF_BUTTONDOWN;
1230        CBRepaintButton( lphc );
1231    }
1232 }
1233
1234 /***********************************************************************
1235  *           COMBO_MouseMove
1236  *
1237  * Two things to do - track combo button and release capture when
1238  * pointer goes into the listbox.
1239  */
1240 static void COMBO_MouseMove( LPHEADCOMBO lphc, WPARAM32 wParam, LPARAM lParam )
1241 {
1242    POINT32  pt = { LOWORD(lParam), HIWORD(lParam) };
1243    RECT32   lbRect;
1244
1245    if( lphc->wState & CBF_BUTTONDOWN )
1246    {
1247        BOOL32   bButton = PtInRect32(&lphc->RectButton, pt);
1248
1249        if( !bButton )
1250        {
1251            lphc->wState &= ~CBF_BUTTONDOWN;
1252            CBRepaintButton( lphc );
1253        }
1254    }
1255
1256    GetClientRect32( lphc->hWndLBox, &lbRect );
1257    MapWindowPoints32( lphc->self->hwndSelf, lphc->hWndLBox, &pt, 1 );
1258    if( PtInRect32(&lbRect, pt) )
1259    {
1260        lphc->wState &= ~CBF_CAPTURE;
1261        ReleaseCapture();
1262        if( CB_GETTYPE(lphc) == CBS_DROPDOWN ) CBUpdateLBox( lphc );
1263
1264        /* hand over pointer tracking */
1265        SendMessage32A( lphc->hWndLBox, WM_LBUTTONDOWN, wParam, lParam );
1266    }
1267 }
1268
1269
1270 /***********************************************************************
1271  *           ComboWndProc
1272  *
1273  * http://www.microsoft.com/msdn/sdk/platforms/doc/sdk/win32/ctrl/src/combobox_15.htm
1274  */
1275 LRESULT WINAPI ComboWndProc( HWND32 hwnd, UINT32 message,
1276                              WPARAM32 wParam, LPARAM lParam )
1277 {
1278     WND*        pWnd = WIN_FindWndPtr(hwnd);
1279
1280     if( pWnd )
1281     {
1282       LPHEADCOMBO       lphc = CB_GETPTR(pWnd);
1283
1284       TRACE(combo, "[%04x]: msg %s wp %08x lp %08lx\n",
1285                    pWnd->hwndSelf, SPY_GetMsgName(message), wParam, lParam );
1286
1287       if( lphc || message == WM_NCCREATE )
1288       switch(message)
1289       {
1290
1291         /* System messages */
1292
1293         case WM_NCCREATE:
1294                 return COMBO_NCCreate(pWnd, lParam);
1295
1296         case WM_NCDESTROY:
1297                 COMBO_NCDestroy(lphc);
1298                 break;
1299
1300         case WM_CREATE:
1301                 return COMBO_Create(lphc, pWnd, lParam);
1302
1303         case WM_PAINT:
1304                 /* wParam may contain a valid HDC! */
1305                 return COMBO_Paint(lphc, wParam);
1306
1307         case WM_ERASEBKGND:
1308                 return TRUE;
1309
1310         case WM_GETDLGCODE:
1311                 return (LRESULT)(DLGC_WANTARROWS | DLGC_WANTCHARS);
1312
1313         case WM_SIZE:
1314                 if( lphc->hWndLBox &&
1315                   !(lphc->wState & CBF_NORESIZE) ) COMBO_Size( lphc );
1316                 return TRUE;
1317
1318         case WM_SETFONT:
1319                 COMBO_Font( lphc, (HFONT16)wParam, (BOOL32)lParam );
1320                 return TRUE;
1321
1322         case WM_GETFONT:
1323                 return (LRESULT)lphc->hFont;
1324
1325         case WM_SETFOCUS:
1326                 if( lphc->wState & CBF_EDIT )
1327                     SetFocus32( lphc->hWndEdit );
1328                 else
1329                     COMBO_SetFocus( lphc );
1330                 return TRUE;
1331
1332         case WM_KILLFOCUS:
1333 #define hwndFocus ((HWND16)wParam)
1334                 if( !hwndFocus ||
1335                     (hwndFocus != lphc->hWndEdit && hwndFocus != lphc->hWndLBox ))
1336                     COMBO_KillFocus( lphc );
1337 #undef hwndFocus
1338                 return TRUE;
1339
1340         case WM_COMMAND:
1341                 return COMBO_Command( lphc, wParam, (HWND32)lParam );
1342
1343         case WM_GETTEXT:
1344                 return COMBO_GetText( lphc, (UINT32)wParam, (LPSTR)lParam );
1345
1346         case WM_SETTEXT:
1347         case WM_GETTEXTLENGTH:
1348         case WM_CLEAR:
1349         case WM_CUT:
1350         case WM_PASTE:
1351         case WM_COPY:
1352                 if( lphc->wState & CBF_EDIT )
1353                     return SendMessage32A( lphc->hWndEdit, message, wParam, lParam );
1354                 return CB_ERR;
1355
1356         case WM_DRAWITEM:
1357         case WM_DELETEITEM:
1358         case WM_COMPAREITEM:
1359         case WM_MEASUREITEM:
1360                 return COMBO_ItemOp32( lphc, message, wParam, lParam );
1361
1362         case WM_ENABLE:
1363                 if( lphc->wState & CBF_EDIT )
1364                     EnableWindow32( lphc->hWndEdit, (BOOL32)wParam );
1365                 EnableWindow32( lphc->hWndLBox, (BOOL32)wParam );
1366                 return TRUE;
1367
1368         case WM_SETREDRAW:
1369                 if( wParam )
1370                     lphc->wState &= ~CBF_NOREDRAW;
1371                 else
1372                     lphc->wState |= CBF_NOREDRAW;
1373
1374                 if( lphc->wState & CBF_EDIT )
1375                     SendMessage32A( lphc->hWndEdit, message, wParam, lParam );
1376                 SendMessage32A( lphc->hWndLBox, message, wParam, lParam );
1377                 return 0;
1378
1379         case WM_SYSKEYDOWN:
1380                 if( KEYDATA_ALT & HIWORD(lParam) )
1381                     if( wParam == VK_UP || wParam == VK_DOWN )
1382                         COMBO_FlipListbox( lphc, TRUE );
1383                 break;
1384
1385         case WM_CHAR:
1386         case WM_KEYDOWN:
1387                 if( lphc->wState & CBF_EDIT )
1388                     return SendMessage32A( lphc->hWndEdit, message, wParam, lParam );
1389                 else
1390                     return SendMessage32A( lphc->hWndLBox, message, wParam, lParam );
1391
1392         case WM_LBUTTONDOWN:
1393                 if( !(lphc->wState & CBF_FOCUSED) ) SetFocus32( lphc->self->hwndSelf );
1394                 if( lphc->wState & CBF_FOCUSED ) COMBO_LButtonDown( lphc, lParam );
1395                 return TRUE;
1396
1397         case WM_LBUTTONUP:
1398                 COMBO_LButtonUp( lphc, lParam );
1399                 return TRUE;
1400
1401         case WM_MOUSEMOVE:
1402                 if( lphc->wState & CBF_CAPTURE )
1403                     COMBO_MouseMove( lphc, wParam, lParam );
1404                 return TRUE;
1405
1406         /* Combo messages */
1407
1408         case CB_ADDSTRING16:
1409                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1410         case CB_ADDSTRING32:
1411                 return SendMessage32A( lphc->hWndLBox, LB_ADDSTRING32, 0, lParam);
1412
1413         case CB_INSERTSTRING16:
1414                 wParam = (INT32)(INT16)wParam;
1415                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1416         case CB_INSERTSTRING32:
1417                 return SendMessage32A( lphc->hWndLBox, LB_INSERTSTRING32, wParam, lParam);
1418
1419         case CB_DELETESTRING16:
1420         case CB_DELETESTRING32:
1421                 return SendMessage32A( lphc->hWndLBox, LB_DELETESTRING32, wParam, 0);
1422
1423         case CB_SELECTSTRING16:
1424                 wParam = (INT32)(INT16)wParam;
1425                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1426         case CB_SELECTSTRING32:
1427                 return COMBO_SelectString( lphc, (INT32)wParam, (LPSTR)lParam );
1428
1429         case CB_FINDSTRING16:
1430                 wParam = (INT32)(INT16)wParam;
1431                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1432         case CB_FINDSTRING32:
1433                 return SendMessage32A( lphc->hWndLBox, LB_FINDSTRING32, wParam, lParam);
1434
1435         case CB_FINDSTRINGEXACT16:
1436                 wParam = (INT32)(INT16)wParam;
1437                 if( CB_HASSTRINGS(lphc) ) lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1438         case CB_FINDSTRINGEXACT32:
1439                 return SendMessage32A( lphc->hWndLBox, LB_FINDSTRINGEXACT32,
1440                                                        wParam, lParam );
1441         case CB_SETITEMHEIGHT16:
1442                 wParam = (INT32)(INT16)wParam;  /* signed integer */
1443         case CB_SETITEMHEIGHT32:
1444                 return COMBO_SetItemHeight( lphc, (INT32)wParam, (INT32)lParam);
1445
1446         case CB_GETITEMHEIGHT16:
1447                 wParam = (INT32)(INT16)wParam;
1448         case CB_GETITEMHEIGHT32:
1449                 if( (INT32)wParam >= 0 )        /* listbox item */
1450                     return SendMessage32A( lphc->hWndLBox, LB_GETITEMHEIGHT32, wParam, 0);
1451                 return (lphc->RectEdit.bottom - lphc->RectEdit.top);
1452
1453         case CB_RESETCONTENT16:
1454         case CB_RESETCONTENT32:
1455                 SendMessage32A( lphc->hWndLBox, LB_RESETCONTENT32, 0, 0 );
1456                 CBPaintText( lphc, 0 );
1457                 return TRUE;
1458
1459         case CB_INITSTORAGE32:
1460                 return SendMessage32A( lphc->hWndLBox, LB_INITSTORAGE32, wParam, lParam);
1461
1462         case CB_GETHORIZONTALEXTENT32:
1463                 return SendMessage32A( lphc->hWndLBox, LB_GETHORIZONTALEXTENT32, 0, 0);
1464
1465         case CB_SETHORIZONTALEXTENT32:
1466                 return SendMessage32A( lphc->hWndLBox, LB_SETHORIZONTALEXTENT32, wParam, 0);
1467
1468         case CB_GETTOPINDEX32:
1469                 return SendMessage32A( lphc->hWndLBox, LB_GETTOPINDEX32, 0, 0);
1470
1471         case CB_GETLOCALE32:
1472                 return SendMessage32A( lphc->hWndLBox, LB_GETLOCALE32, 0, 0);
1473
1474         case CB_SETLOCALE32:
1475                 return SendMessage32A( lphc->hWndLBox, LB_SETLOCALE32, wParam, 0);
1476
1477         case CB_GETDROPPEDWIDTH32:
1478                 if( lphc->droppedWidth )
1479                     return lphc->droppedWidth;
1480                 return lphc->RectCombo.right - lphc->RectCombo.left -
1481                            (lphc->wState & CBF_EDIT) ? CBitOffset : 0;
1482
1483         case CB_SETDROPPEDWIDTH32:
1484                 if( (CB_GETTYPE(lphc) != CBS_SIMPLE) &&
1485                     (INT32)wParam < 32768 ) lphc->droppedWidth = (INT32)wParam;
1486                 return CB_ERR;
1487
1488         case CB_GETDROPPEDCONTROLRECT16:
1489                 lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1490                 if( lParam )
1491                 {
1492                     RECT32      r;
1493                     CBGetDroppedControlRect32( lphc, &r );
1494                     CONV_RECT32TO16( &r, (LPRECT16)lParam );
1495                 }
1496                 return CB_OKAY;
1497
1498         case CB_GETDROPPEDCONTROLRECT32:
1499                 if( lParam ) CBGetDroppedControlRect32(lphc, (LPRECT32)lParam );
1500                 return CB_OKAY;
1501
1502         case CB_GETDROPPEDSTATE16:
1503         case CB_GETDROPPEDSTATE32:
1504                 return (lphc->wState & CBF_DROPPED) ? TRUE : FALSE;
1505
1506         case CB_DIR16:
1507                 lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1508                 /* fall through */
1509         case CB_DIR32:
1510                 return COMBO_Directory( lphc, (UINT32)wParam,
1511                                        (LPSTR)lParam, (message == CB_DIR32));
1512         case CB_SHOWDROPDOWN16:
1513         case CB_SHOWDROPDOWN32:
1514                 if( CB_GETTYPE(lphc) != CBS_SIMPLE )
1515                 {
1516                     if( wParam )
1517                     {
1518                         if( !(lphc->wState & CBF_DROPPED) )
1519                             CBDropDown( lphc );
1520                     }
1521                     else
1522                         if( lphc->wState & CBF_DROPPED )
1523                             CBRollUp( lphc, FALSE, TRUE );
1524                 }
1525                 return TRUE;
1526
1527         case CB_GETCOUNT16:
1528         case CB_GETCOUNT32:
1529                 return SendMessage32A( lphc->hWndLBox, LB_GETCOUNT32, 0, 0);
1530
1531         case CB_GETCURSEL16:
1532         case CB_GETCURSEL32:
1533                 return SendMessage32A( lphc->hWndLBox, LB_GETCURSEL32, 0, 0);
1534
1535         case CB_SETCURSEL16:
1536                 wParam = (INT32)(INT16)wParam;
1537         case CB_SETCURSEL32:
1538                 return SendMessage32A( lphc->hWndLBox, LB_SETCURSEL32, wParam, 0);
1539
1540         case CB_GETLBTEXT16:
1541                 wParam = (INT32)(INT16)wParam;
1542                 lParam = (LPARAM)PTR_SEG_TO_LIN(lParam);
1543         case CB_GETLBTEXT32:
1544                 return SendMessage32A( lphc->hWndLBox, LB_GETTEXT32, wParam, lParam);
1545
1546         case CB_GETLBTEXTLEN16:
1547                 wParam = (INT32)(INT16)wParam;
1548         case CB_GETLBTEXTLEN32:
1549                 return SendMessage32A( lphc->hWndLBox, LB_GETTEXTLEN32, wParam, 0);
1550
1551         case CB_GETITEMDATA16:
1552                 wParam = (INT32)(INT16)wParam;
1553         case CB_GETITEMDATA32:
1554                 return SendMessage32A( lphc->hWndLBox, LB_GETITEMDATA32, wParam, 0);
1555
1556         case CB_SETITEMDATA16:
1557                 wParam = (INT32)(INT16)wParam;
1558         case CB_SETITEMDATA32:
1559                 return SendMessage32A( lphc->hWndLBox, LB_SETITEMDATA32, wParam, lParam);
1560
1561         case CB_GETEDITSEL16:
1562                 wParam = lParam = 0;   /* just in case */
1563         case CB_GETEDITSEL32:
1564                 if( lphc->wState & CBF_EDIT )
1565                 {
1566                     INT32       a, b;
1567
1568                     return SendMessage32A( lphc->hWndEdit, EM_GETSEL32,
1569                                            (wParam) ? wParam : (WPARAM32)&a,
1570                                            (lParam) ? lParam : (LPARAM)&b );
1571                 }
1572                 return CB_ERR;
1573
1574         case CB_SETEDITSEL16:
1575         case CB_SETEDITSEL32:
1576                 if( lphc->wState & CBF_EDIT )
1577                     return SendMessage32A( lphc->hWndEdit, EM_SETSEL32,
1578                           (INT32)(INT16)LOWORD(lParam), (INT32)(INT16)HIWORD(lParam) );
1579                 return CB_ERR;
1580
1581         case CB_SETEXTENDEDUI16:
1582         case CB_SETEXTENDEDUI32:
1583                 if( CB_GETTYPE(lphc) == CBS_SIMPLE ) return CB_ERR;
1584
1585                 if( wParam )
1586                     lphc->wState |= CBF_EUI;
1587                 else lphc->wState &= ~CBF_EUI;
1588                 return CB_OKAY;
1589
1590         case CB_GETEXTENDEDUI16:
1591         case CB_GETEXTENDEDUI32:
1592                 return (lphc->wState & CBF_EUI) ? TRUE : FALSE;
1593
1594         case (WM_USER + 0x1B):
1595                 WARN(combo, "[%04x]: undocumented msg!\n", hwnd );
1596     }
1597     return DefWindowProc32A(hwnd, message, wParam, lParam);
1598   }
1599   return CB_ERR;
1600 }
1601