windows/mdi.c

   1 /* MDI.C
   2  *
   3  * Copyright 1994, Bob Amstadt
   4  *           1995,1996 Alex Korobka
   5  *
   6  * This file contains routines to support MDI (Multiple Document
   7  * Interface) features .
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  *
  23  * Notes: Fairly complete implementation.
  24  *        Also, Excel and WinWord do _not_ use MDI so if you're trying
  25  *        to fix them look elsewhere.
  26  *
  27  * Notes on how the "More Windows..." is implemented:
  28  *
  29  *      When we have more than 9 opened windows, a "More Windows..."
  30  *      option appears in the "Windows" menu. Each child window has
  31  *      a WND* associated with it, accesible via the children list of
  32  *      the parent window. This WND* has a wIDmenu member, which reflects
  33  *      the position of the child in the window list. For example, with
  34  *      9 child windows, we could have the following pattern:
  35  *
  36  *
  37  *
  38  *                Name of the child window    pWndChild->wIDmenu
  39  *                     Doc1                       5000
  40  *                     Doc2                       5001
  41  *                     Doc3                       5002
  42  *                     Doc4                       5003
  43  *                     Doc5                       5004
  44  *                     Doc6                       5005
  45  *                     Doc7                       5006
  46  *                     Doc8                       5007
  47  *                     Doc9                       5008
  48  *
  49  *
  50  *       The "Windows" menu, as the "More windows..." dialog, are constructed
  51  *       in this order. If we add a child, we would have the following list:
  52  *
  53  *
  54  *               Name of the child window    pWndChild->wIDmenu
  55  *                     Doc1                       5000
  56  *                     Doc2                       5001
  57  *                     Doc3                       5002
  58  *                     Doc4                       5003
  59  *                     Doc5                       5004
  60  *                     Doc6                       5005
  61  *                     Doc7                       5006
  62  *                     Doc8                       5007
  63  *                     Doc9                       5008
  64  *                     Doc10                      5009
  65  *
  66  *       But only 5000 to 5008 would be displayed in the "Windows" menu. We want
  67  *       the last created child to be in the menu, so we swap the last child with
  68  *       the 9th... Doc9 will be accessible via the "More Windows..." option.
  69  *
  70  *                     Doc1                       5000
  71  *                     Doc2                       5001
  72  *                     Doc3                       5002
  73  *                     Doc4                       5003
  74  *                     Doc5                       5004
  75  *                     Doc6                       5005
  76  *                     Doc7                       5006
  77  *                     Doc8                       5007
  78  *                     Doc9                       5009
  79  *                     Doc10                      5008
  80  *
  81  */
  82
  83 #include <stdlib.h>
  84 #include <stdarg.h>
  85 #include <stdio.h>
  86 #include <string.h>
  87 #include <math.h>
  88
  89 #include "windef.h"
  90 #include "winbase.h"
  91 #include "wingdi.h"
  92 #include "winuser.h"
  93 #include "wownt32.h"
  94 #include "wine/winuser16.h"
  95 #include "wine/unicode.h"
  96 #include "win.h"
  97 #include "nonclient.h"
  98 #include "controls.h"
  99 #include "message.h"
 100 #include "user.h"
 101 #include "wine/debug.h"
 102 #include "dlgs.h"
 103
 104 WINE_DEFAULT_DEBUG_CHANNEL(mdi);
 105
 106 #define MDI_MAXTITLELENGTH      0xa1
 107
 108 #define WM_MDICALCCHILDSCROLL   0x10ac /* this is exactly what Windows uses */
 109
 110 /* "More Windows..." definitions */
 111 #define MDI_MOREWINDOWSLIMIT    9       /* after this number of windows, a "More Windows..."
 112                                            option will appear under the Windows menu */
 113 #define MDI_IDC_LISTBOX         100
 114 #define IDS_MDI_MOREWINDOWS     13
 115
 116 #define MDIF_NEEDUPDATE         0x0001
 117
 118 typedef struct
 119 {
 120     UINT      nActiveChildren;
 121     HWND      hwndActiveChild;
 122     HWND      *child; /* array of tracked children */
 123     HMENU     hFrameMenu;
 124     HMENU     hWindowMenu;
 125     UINT      idFirstChild;
 126     LPWSTR    frameTitle;
 127     UINT      nTotalCreated;
 128     UINT      mdiFlags;
 129     UINT      sbRecalc;   /* SB_xxx flags for scrollbar fixup */
 130 } MDICLIENTINFO;
 131
 132 static HBITMAP hBmpClose   = 0;
 133
 134 /* ----------------- declarations ----------------- */
 135 static void MDI_UpdateFrameText( HWND, HWND, LPCWSTR);
 136 static BOOL MDI_AugmentFrameMenu( HWND, HWND );
 137 static BOOL MDI_RestoreFrameMenu( HWND, HWND );
 138 static LONG MDI_ChildActivate( HWND, HWND );
 139 static LRESULT MDI_RefreshMenu(MDICLIENTINFO *);
 140
 141 static HWND MDI_MoreWindowsDialog(HWND);
 142 static LRESULT WINAPI MDIClientWndProcA( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam );
 143 static LRESULT WINAPI MDIClientWndProcW( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam );
 144
 145 /* -------- Miscellaneous service functions ----------
 146  *
 147  *                      MDI_GetChildByID
 148  */
 149 static HWND MDI_GetChildByID(HWND hwnd, UINT id, MDICLIENTINFO *ci)
 150 {
 151     int i;
 152
 153     for (i = 0; ci->nActiveChildren; i++)
 154     {
 155         if (GetWindowLongPtrW( ci->child[i], GWLP_ID ) == id)
 156             return ci->child[i];
 157     }
 158     return 0;
 159 }
 160
 161 static void MDI_PostUpdate(HWND hwnd, MDICLIENTINFO* ci, WORD recalc)
 162 {
 163     if( !(ci->mdiFlags & MDIF_NEEDUPDATE) )
 164     {
 165         ci->mdiFlags |= MDIF_NEEDUPDATE;
 166         PostMessageA( hwnd, WM_MDICALCCHILDSCROLL, 0, 0);
 167     }
 168     ci->sbRecalc = recalc;
 169 }
 170
 171
 172 /*********************************************************************
 173  * MDIClient class descriptor
 174  */
 175 const struct builtin_class_descr MDICLIENT_builtin_class =
 176 {
 177     "MDIClient",            /* name */
 178     0,                      /* style */
 179     MDIClientWndProcA,      /* procA */
 180     MDIClientWndProcW,      /* procW */
 181     sizeof(MDICLIENTINFO),  /* extra */
 182     IDC_ARROW,              /* cursor */
 183     (HBRUSH)(COLOR_APPWORKSPACE+1)    /* brush */
 184 };
 185
 186
 187 static MDICLIENTINFO *get_client_info( HWND client )
 188 {
 189     MDICLIENTINFO *ret = NULL;
 190     WND *win = WIN_GetPtr( client );
 191     if (win)
 192     {
 193         if (win == WND_OTHER_PROCESS)
 194         {
 195             ERR( "client %p belongs to other process\n", client );
 196             return NULL;
 197         }
 198         if (win->cbWndExtra < sizeof(MDICLIENTINFO)) WARN( "%p is not an MDI client\n", client );
 199         else ret = (MDICLIENTINFO *)win->wExtra;
 200         WIN_ReleasePtr( win );
 201     }
 202     return ret;
 203 }
 204
 205 /**********************************************************************
 206  *                      MDI_GetWindow
 207  *
 208  * returns "activateable" child different from the current or zero
 209  */
 210 static HWND MDI_GetWindow(MDICLIENTINFO *clientInfo, HWND hWnd, BOOL bNext,
 211                             DWORD dwStyleMask )
 212 {
 213     int i;
 214     HWND *list;
 215     HWND last = 0;
 216
 217     dwStyleMask |= WS_DISABLED | WS_VISIBLE;
 218     if( !hWnd ) hWnd = clientInfo->hwndActiveChild;
 219
 220     if (!(list = WIN_ListChildren( GetParent(hWnd) ))) return 0;
 221     i = 0;
 222     /* start from next after hWnd */
 223     while (list[i] && list[i] != hWnd) i++;
 224     if (list[i]) i++;
 225
 226     for ( ; list[i]; i++)
 227     {
 228         if (GetWindow( list[i], GW_OWNER )) continue;
 229         if ((GetWindowLongW( list[i], GWL_STYLE ) & dwStyleMask) != WS_VISIBLE) continue;
 230         last = list[i];
 231         if (bNext) goto found;
 232     }
 233     /* now restart from the beginning */
 234     for (i = 0; list[i] && list[i] != hWnd; i++)
 235     {
 236         if (GetWindow( list[i], GW_OWNER )) continue;
 237         if ((GetWindowLongW( list[i], GWL_STYLE ) & dwStyleMask) != WS_VISIBLE) continue;
 238         last = list[i];
 239         if (bNext) goto found;
 240     }
 241  found:
 242     HeapFree( GetProcessHeap(), 0, list );
 243     return last;
 244 }
 245
 246 /**********************************************************************
 247  *                      MDI_CalcDefaultChildPos
 248  *
 249  *  It seems that the default height is about 2/3 of the client rect
 250  */
 251 void MDI_CalcDefaultChildPos( HWND hwndClient, INT total, LPPOINT lpPos, INT delta )
 252 {
 253     INT  nstagger;
 254     RECT rect;
 255     INT  spacing = GetSystemMetrics(SM_CYCAPTION) +
 256                      GetSystemMetrics(SM_CYFRAME) - 1;
 257
 258     if (total < 0)
 259     {
 260         MDICLIENTINFO *ci = get_client_info(hwndClient);
 261         total = ci ? ci->nTotalCreated : 0;
 262     }
 263
 264     GetClientRect( hwndClient, &rect );
 265     if( rect.bottom - rect.top - delta >= spacing )
 266         rect.bottom -= delta;
 267
 268     nstagger = (rect.bottom - rect.top)/(3 * spacing);
 269     lpPos[1].x = (rect.right - rect.left - nstagger * spacing);
 270     lpPos[1].y = (rect.bottom - rect.top - nstagger * spacing);
 271     lpPos[0].x = lpPos[0].y = spacing * (total%(nstagger+1));
 272 }
 273
 274 /**********************************************************************
 275  *            MDISetMenu
 276  */
 277 static LRESULT MDISetMenu( HWND hwnd, HMENU hmenuFrame,
 278                            HMENU hmenuWindow)
 279 {
 280     MDICLIENTINFO *ci;
 281     HWND hwndFrame = GetParent(hwnd);
 282
 283     TRACE("%p %p %p\n", hwnd, hmenuFrame, hmenuWindow);
 284
 285     if (hmenuFrame && !IsMenu(hmenuFrame))
 286     {
 287         WARN("hmenuFrame is not a menu handle\n");
 288         return 0L;
 289     }
 290
 291     if (hmenuWindow && !IsMenu(hmenuWindow))
 292     {
 293         WARN("hmenuWindow is not a menu handle\n");
 294         return 0L;
 295     }
 296
 297     if (!(ci = get_client_info( hwnd ))) return 0;
 298
 299     if (hmenuFrame)
 300     {
 301         if (hmenuFrame == ci->hFrameMenu) return (LRESULT)hmenuFrame;
 302
 303         if( IsZoomed(ci->hwndActiveChild) && hmenuFrame != ci->hFrameMenu )
 304             MDI_RestoreFrameMenu( hwndFrame, ci->hwndActiveChild );
 305     }
 306
 307     if( hmenuWindow && hmenuWindow != ci->hWindowMenu )
 308     {
 309         /* delete menu items from ci->hWindowMenu
 310          * and add them to hmenuWindow */
 311         /* Agent newsreader calls this function with  ci->hWindowMenu == NULL */
 312         if( ci->hWindowMenu && ci->nActiveChildren )
 313         {
 314             UINT nActiveChildren_old = ci->nActiveChildren;
 315
 316             /* Remove all items from old Window menu */
 317             ci->nActiveChildren = 0;
 318             MDI_RefreshMenu(ci);
 319
 320             ci->hWindowMenu = hmenuWindow;
 321
 322             /* Add items to the new Window menu */
 323             ci->nActiveChildren = nActiveChildren_old;
 324             MDI_RefreshMenu(ci);
 325         }
 326         else
 327             ci->hWindowMenu = hmenuWindow;
 328     }
 329
 330     if (hmenuFrame)
 331     {
 332         SetMenu(hwndFrame, hmenuFrame);
 333         if( hmenuFrame != ci->hFrameMenu )
 334         {
 335             HMENU oldFrameMenu = ci->hFrameMenu;
 336
 337             ci->hFrameMenu = hmenuFrame;
 338             if( IsZoomed(ci->hwndActiveChild) )
 339                 MDI_AugmentFrameMenu( hwndFrame, ci->hwndActiveChild );
 340
 341             return (LRESULT)oldFrameMenu;
 342         }
 343     }
 344     else
 345     {
 346         /* SetMenu() may already have been called, meaning that this window
 347          * already has its menu. But they may have done a SetMenu() on
 348          * an MDI window, and called MDISetMenu() after the fact, meaning
 349          * that the "if" to this "else" wouldn't catch the need to
 350          * augment the frame menu.
 351          */
 352         if( IsZoomed(ci->hwndActiveChild) )
 353             MDI_AugmentFrameMenu( hwndFrame, ci->hwndActiveChild );
 354     }
 355
 356     return 0;
 357 }
 358
 359 /**********************************************************************
 360  *            MDIRefreshMenu
 361  */
 362 static LRESULT MDI_RefreshMenu(MDICLIENTINFO *ci)
 363 {
 364     UINT i, count, visible, id;
 365     WCHAR buf[MDI_MAXTITLELENGTH];
 366
 367     TRACE("children %u, window menu %p\n", ci->nActiveChildren, ci->hWindowMenu);
 368
 369     if (!ci->hWindowMenu)
 370         return 0;
 371
 372     if (!IsMenu(ci->hWindowMenu))
 373     {
 374         WARN("Window menu handle %p is no more valid\n", ci->hWindowMenu);
 375         return 0;
 376     }
 377
 378     /* Windows finds the last separator in the menu, and if after it
 379      * there is a menu item with MDI magic ID removes all existing
 380      * menu items after it, and then adds visible MDI children.
 381      */
 382     count = GetMenuItemCount(ci->hWindowMenu);
 383     for (i = 0; i < count; i++)
 384     {
 385         MENUITEMINFOW mii;
 386
 387         memset(&mii, 0, sizeof(mii));
 388         mii.cbSize = sizeof(mii);
 389         mii.fMask  = MIIM_TYPE;
 390         if (GetMenuItemInfoW(ci->hWindowMenu, i, TRUE, &mii))
 391         {
 392             if (mii.fType & MF_SEPARATOR)
 393             {
 394                 /* Windows checks only ID of the menu item */
 395                 memset(&mii, 0, sizeof(mii));
 396                 mii.cbSize = sizeof(mii);
 397                 mii.fMask  = MIIM_ID;
 398                 if (GetMenuItemInfoW(ci->hWindowMenu, i + 1, TRUE, &mii))
 399                 {
 400                     if (mii.wID == ci->idFirstChild)
 401                     {
 402                         TRACE("removing %u items including separator\n", count - i);
 403                         while (RemoveMenu(ci->hWindowMenu, i, MF_BYPOSITION))
 404                             /* nothing */;
 405
 406                         break;
 407                     }
 408                 }
 409             }
 410         }
 411     }
 412
 413     visible = 0;
 414     for (i = 0; i < ci->nActiveChildren; i++)
 415     {
 416         if (GetWindowLongW(ci->child[i], GWL_STYLE) & WS_VISIBLE)
 417         {
 418             id = ci->idFirstChild + visible;
 419
 420             if (visible == MDI_MOREWINDOWSLIMIT)
 421             {
 422                 LoadStringW(user32_module, IDS_MDI_MOREWINDOWS, buf, sizeof(buf)/sizeof(WCHAR));
 423                 AppendMenuW(ci->hWindowMenu, MF_STRING, id, buf);
 424                 break;
 425             }
 426
 427             if (!visible)
 428                 /* Visio expects that separator has id 0 */
 429                 AppendMenuW(ci->hWindowMenu, MF_SEPARATOR, 0, NULL);
 430
 431             visible++;
 432
 433             SetWindowLongPtrW(ci->child[i], GWLP_ID, id);
 434
 435             buf[0] = '&';
 436             buf[1] = '0' + visible;
 437             buf[2] = ' ';
 438             InternalGetWindowText(ci->child[i], buf + 3, sizeof(buf)/sizeof(WCHAR) - 3);
 439             TRACE("Adding %p, id %u %s\n", ci->child[i], id, debugstr_w(buf));
 440             AppendMenuW(ci->hWindowMenu, MF_STRING, id, buf);
 441
 442             if (ci->child[i] == ci->hwndActiveChild)
 443                 CheckMenuItem(ci->hWindowMenu, id, MF_CHECKED);
 444         }
 445         else
 446             TRACE("MDI child %p is not visible, skipping\n", ci->child[i]);
 447     }
 448
 449     return (LRESULT)ci->hFrameMenu;
 450 }
 451
 452
 453 /* ------------------ MDI child window functions ---------------------- */
 454
 455 /**********************************************************************
 456  *                      MDI_ChildGetMinMaxInfo
 457  *
 458  * Note: The rule here is that client rect of the maximized MDI child
 459  *       is equal to the client rect of the MDI client window.
 460  */
 461 static void MDI_ChildGetMinMaxInfo( HWND client, HWND hwnd, MINMAXINFO* lpMinMax )
 462 {
 463     RECT rect;
 464
 465     GetClientRect( client, &rect );
 466     AdjustWindowRectEx( &rect, GetWindowLongW( hwnd, GWL_STYLE ),
 467                         0, GetWindowLongW( hwnd, GWL_EXSTYLE ));
 468
 469     lpMinMax->ptMaxSize.x = rect.right -= rect.left;
 470     lpMinMax->ptMaxSize.y = rect.bottom -= rect.top;
 471
 472     lpMinMax->ptMaxPosition.x = rect.left;
 473     lpMinMax->ptMaxPosition.y = rect.top;
 474
 475     TRACE("max rect (%ld,%ld - %ld, %ld)\n",
 476                         rect.left,rect.top,rect.right,rect.bottom);
 477 }
 478
 479 /**********************************************************************
 480  *                      MDI_SwitchActiveChild
 481  *
 482  * Note: SetWindowPos sends WM_CHILDACTIVATE to the child window that is
 483  *       being activated
 484  */
 485 static void MDI_SwitchActiveChild( MDICLIENTINFO *ci, HWND hwndTo )
 486 {
 487     HWND hwndPrev;
 488
 489     hwndPrev = ci->hwndActiveChild;
 490
 491     TRACE("from %p, to %p\n", hwndPrev, hwndTo);
 492
 493     if ( hwndTo != hwndPrev )
 494     {
 495         BOOL was_zoomed = IsZoomed(hwndPrev);
 496
 497         if (was_zoomed)
 498         {
 499             /* restore old MDI child */
 500             SendMessageW( hwndPrev, WM_SETREDRAW, FALSE, 0 );
 501             ShowWindow( hwndPrev, SW_RESTORE );
 502             SendMessageW( hwndPrev, WM_SETREDRAW, TRUE, 0 );
 503
 504             /* activate new MDI child */
 505             SetWindowPos( hwndTo, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE );
 506             /* maximize new MDI child */
 507             ShowWindow( hwndTo, SW_MAXIMIZE );
 508         }
 509         /* activate new MDI child */
 510         SetWindowPos( hwndTo, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE );
 511     }
 512 }
 513
 514
 515 /**********************************************************************
 516  *                                      MDIDestroyChild
 517  */
 518 static LRESULT MDIDestroyChild( HWND parent, MDICLIENTINFO *ci,
 519                                 HWND child, BOOL flagDestroy )
 520 {
 521     UINT i;
 522
 523     TRACE("# of managed children %u\n", ci->nActiveChildren);
 524
 525     if( child == ci->hwndActiveChild )
 526     {
 527         HWND next = MDI_GetWindow(ci, child, TRUE, 0);
 528         MDI_SwitchActiveChild(ci, next);
 529     }
 530
 531     for (i = 0; i < ci->nActiveChildren; i++)
 532     {
 533         if (ci->child[i] == child)
 534         {
 535             HWND *new_child = HeapAlloc(GetProcessHeap(), 0, (ci->nActiveChildren - 1) * sizeof(HWND));
 536             memcpy(new_child, ci->child, i * sizeof(HWND));
 537             if (i + 1 < ci->nActiveChildren)
 538                 memcpy(new_child + i, ci->child + i + 1, (ci->nActiveChildren - i - 1) * sizeof(HWND));
 539             HeapFree(GetProcessHeap(), 0, ci->child);
 540             ci->child = new_child;
 541
 542             ci->nActiveChildren--;
 543             break;
 544         }
 545     }
 546
 547     if (flagDestroy)
 548     {
 549         MDI_PostUpdate(GetParent(child), ci, SB_BOTH+1);
 550         DestroyWindow(child);
 551     }
 552
 553     TRACE("child destroyed - %p\n", child);
 554     return 0;
 555 }
 556
 557
 558 /**********************************************************************
 559  *                                      MDI_ChildActivate
 560  *
 561  * Called in response to WM_CHILDACTIVATE
 562  */
 563 static LONG MDI_ChildActivate( HWND client, HWND child )
 564 {
 565     MDICLIENTINFO *clientInfo;
 566     HWND prevActiveWnd, frame;
 567     BOOL isActiveFrameWnd;
 568
 569     clientInfo = get_client_info( client );
 570
 571     if (clientInfo->hwndActiveChild == child) return 0;
 572
 573     TRACE("%p\n", child);
 574
 575     frame = GetParent(client);
 576     isActiveFrameWnd = (GetActiveWindow() == frame);
 577     prevActiveWnd = clientInfo->hwndActiveChild;
 578
 579     /* deactivate prev. active child */
 580     if(prevActiveWnd)
 581     {
 582         SendMessageW( prevActiveWnd, WM_NCACTIVATE, FALSE, 0L );
 583         SendMessageW( prevActiveWnd, WM_MDIACTIVATE, (WPARAM)prevActiveWnd, (LPARAM)child);
 584     }
 585
 586     clientInfo->hwndActiveChild = child;
 587
 588     MDI_RefreshMenu(clientInfo);
 589
 590     if( isActiveFrameWnd )
 591     {
 592         SendMessageW( child, WM_NCACTIVATE, TRUE, 0L);
 593         SetFocus(child);
 594     }
 595
 596     SendMessageW( child, WM_MDIACTIVATE, (WPARAM)prevActiveWnd, (LPARAM)child );
 597     return TRUE;
 598 }
 599
 600 /* -------------------- MDI client window functions ------------------- */
 601
 602 /**********************************************************************
 603  *                              CreateMDIMenuBitmap
 604  */
 605 static HBITMAP CreateMDIMenuBitmap(void)
 606 {
 607  HDC            hDCSrc  = CreateCompatibleDC(0);
 608  HDC            hDCDest = CreateCompatibleDC(hDCSrc);
 609  HBITMAP        hbClose = LoadBitmapW(0, MAKEINTRESOURCEW(OBM_OLD_CLOSE) );
 610  HBITMAP        hbCopy;
 611  HBITMAP        hobjSrc, hobjDest;
 612
 613  hobjSrc = SelectObject(hDCSrc, hbClose);
 614  hbCopy = CreateCompatibleBitmap(hDCSrc,GetSystemMetrics(SM_CXSIZE),GetSystemMetrics(SM_CYSIZE));
 615  hobjDest = SelectObject(hDCDest, hbCopy);
 616
 617  BitBlt(hDCDest, 0, 0, GetSystemMetrics(SM_CXSIZE), GetSystemMetrics(SM_CYSIZE),
 618           hDCSrc, GetSystemMetrics(SM_CXSIZE), 0, SRCCOPY);
 619
 620  SelectObject(hDCSrc, hobjSrc);
 621  DeleteObject(hbClose);
 622  DeleteDC(hDCSrc);
 623
 624  hobjSrc = SelectObject( hDCDest, GetStockObject(BLACK_PEN) );
 625
 626  MoveToEx( hDCDest, GetSystemMetrics(SM_CXSIZE) - 1, 0, NULL );
 627  LineTo( hDCDest, GetSystemMetrics(SM_CXSIZE) - 1, GetSystemMetrics(SM_CYSIZE) - 1);
 628
 629  SelectObject(hDCDest, hobjSrc );
 630  SelectObject(hDCDest, hobjDest);
 631  DeleteDC(hDCDest);
 632
 633  return hbCopy;
 634 }
 635
 636 /**********************************************************************
 637  *                              MDICascade
 638  */
 639 static LONG MDICascade( HWND client, MDICLIENTINFO *ci )
 640 {
 641     HWND *win_array;
 642     BOOL has_icons = FALSE;
 643     int i, total;
 644
 645     if (IsZoomed(ci->hwndActiveChild))
 646         SendMessageA(client, WM_MDIRESTORE, (WPARAM)ci->hwndActiveChild, 0);
 647
 648     if (ci->nActiveChildren == 0) return 0;
 649
 650     if (!(win_array = WIN_ListChildren( client ))) return 0;
 651
 652     /* remove all the windows we don't want */
 653     for (i = total = 0; win_array[i]; i++)
 654     {
 655         if (!IsWindowVisible( win_array[i] )) continue;
 656         if (GetWindow( win_array[i], GW_OWNER )) continue; /* skip owned windows */
 657         if (IsIconic( win_array[i] ))
 658         {
 659             has_icons = TRUE;
 660             continue;
 661         }
 662         win_array[total++] = win_array[i];
 663     }
 664     win_array[total] = 0;
 665
 666     if (total)
 667     {
 668         INT delta = 0, n = 0, i;
 669         POINT pos[2];
 670         if (has_icons) delta = GetSystemMetrics(SM_CYICONSPACING) + GetSystemMetrics(SM_CYICON);
 671
 672         /* walk the list (backwards) and move windows */
 673         for (i = total - 1; i >= 0; i--)
 674         {
 675             TRACE("move %p to (%ld,%ld) size [%ld,%ld]\n",
 676                   win_array[i], pos[0].x, pos[0].y, pos[1].x, pos[1].y);
 677
 678             MDI_CalcDefaultChildPos(client, n++, pos, delta);
 679             SetWindowPos( win_array[i], 0, pos[0].x, pos[0].y, pos[1].x, pos[1].y,
 680                           SWP_DRAWFRAME | SWP_NOACTIVATE | SWP_NOZORDER);
 681         }
 682     }
 683     HeapFree( GetProcessHeap(), 0, win_array );
 684
 685     if (has_icons) ArrangeIconicWindows( client );
 686     return 0;
 687 }
 688
 689 /**********************************************************************
 690  *                                      MDITile
 691  */
 692 static void MDITile( HWND client, MDICLIENTINFO *ci, WPARAM wParam )
 693 {
 694     HWND *win_array;
 695     int i, total;
 696     BOOL has_icons = FALSE;
 697
 698     if (IsZoomed(ci->hwndActiveChild))
 699         SendMessageA(client, WM_MDIRESTORE, (WPARAM)ci->hwndActiveChild, 0);
 700
 701     if (ci->nActiveChildren == 0) return;
 702
 703     if (!(win_array = WIN_ListChildren( client ))) return;
 704
 705     /* remove all the windows we don't want */
 706     for (i = total = 0; win_array[i]; i++)
 707     {
 708         if (!IsWindowVisible( win_array[i] )) continue;
 709         if (GetWindow( win_array[i], GW_OWNER )) continue; /* skip owned windows (icon titles) */
 710         if (IsIconic( win_array[i] ))
 711         {
 712             has_icons = TRUE;
 713             continue;
 714         }
 715         if ((wParam & MDITILE_SKIPDISABLED) && !IsWindowEnabled( win_array[i] )) continue;
 716         win_array[total++] = win_array[i];
 717     }
 718     win_array[total] = 0;
 719
 720     TRACE("%u windows to tile\n", total);
 721
 722     if (total)
 723     {
 724         HWND *pWnd = win_array;
 725         RECT rect;
 726         int x, y, xsize, ysize;
 727         int rows, columns, r, c, i;
 728
 729         GetClientRect(client,&rect);
 730         rows    = (int) sqrt((double)total);
 731         columns = total / rows;
 732
 733         if( wParam & MDITILE_HORIZONTAL )  /* version >= 3.1 */
 734         {
 735             i = rows;
 736             rows = columns;  /* exchange r and c */
 737             columns = i;
 738         }
 739
 740         if (has_icons)
 741         {
 742             y = rect.bottom - 2 * GetSystemMetrics(SM_CYICONSPACING) - GetSystemMetrics(SM_CYICON);
 743             rect.bottom = ( y - GetSystemMetrics(SM_CYICON) < rect.top )? rect.bottom: y;
 744         }
 745
 746         ysize   = rect.bottom / rows;
 747         xsize   = rect.right  / columns;
 748
 749         for (x = i = 0, c = 1; c <= columns && *pWnd; c++)
 750         {
 751             if (c == columns)
 752             {
 753                 rows  = total - i;
 754                 ysize = rect.bottom / rows;
 755             }
 756
 757             y = 0;
 758             for (r = 1; r <= rows && *pWnd; r++, i++)
 759             {
 760                 SetWindowPos(*pWnd, 0, x, y, xsize, ysize,
 761                              SWP_DRAWFRAME | SWP_NOACTIVATE | SWP_NOZORDER);
 762                 y += ysize;
 763                 pWnd++;
 764             }
 765             x += xsize;
 766         }
 767     }
 768     HeapFree( GetProcessHeap(), 0, win_array );
 769     if (has_icons) ArrangeIconicWindows( client );
 770 }
 771
 772 /* ----------------------- Frame window ---------------------------- */
 773
 774
 775 /**********************************************************************
 776  *                                      MDI_AugmentFrameMenu
 777  */
 778 static BOOL MDI_AugmentFrameMenu( HWND frame, HWND hChild )
 779 {
 780     HMENU menu = GetMenu( frame );
 781     HMENU       hSysPopup = 0;
 782     HBITMAP hSysMenuBitmap = 0;
 783     INT nItems;
 784     UINT iId;
 785     HICON hIcon;
 786
 787     TRACE("frame %p,child %p\n",frame,hChild);
 788
 789     if( !menu ) return 0;
 790
 791     /* if the system buttons already exist do not add them again */
 792     nItems = GetMenuItemCount(menu) - 1;
 793     iId = GetMenuItemID(menu,nItems) ;
 794     if (iId == SC_RESTORE || iId == SC_CLOSE)
 795         return 0;
 796
 797     /* create a copy of sysmenu popup and insert it into frame menu bar */
 798     if (!(hSysPopup = GetSystemMenu(hChild, FALSE)))
 799         return 0;
 800
 801     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 802                    SC_MINIMIZE, (LPSTR)(DWORD)HBMMENU_MBAR_MINIMIZE ) ;
 803     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 804                    SC_RESTORE, (LPSTR)(DWORD)HBMMENU_MBAR_RESTORE );
 805
 806     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 807                    SC_CLOSE, (LPSTR)(DWORD)HBMMENU_MBAR_CLOSE );
 808
 809     /* The system menu is replaced by the child icon */
 810     hIcon = (HICON)GetClassLongW(hChild, GCL_HICONSM);
 811     if (!hIcon)
 812         hIcon = (HICON)GetClassLongW(hChild, GCL_HICON);
 813     if (!hIcon)
 814         hIcon = LoadImageW(0, MAKEINTRESOURCEW(IDI_WINLOGO), IMAGE_ICON, 0, 0, LR_DEFAULTCOLOR);
 815     if (hIcon)
 816     {
 817       HDC hMemDC;
 818       HBITMAP hBitmap, hOldBitmap;
 819       HBRUSH hBrush;
 820       HDC hdc = GetDC(hChild);
 821
 822       if (hdc)
 823       {
 824         int cx, cy;
 825         cx = GetSystemMetrics(SM_CXSMICON);
 826         cy = GetSystemMetrics(SM_CYSMICON);
 827         hMemDC = CreateCompatibleDC(hdc);
 828         hBitmap = CreateCompatibleBitmap(hdc, cx, cy);
 829         hOldBitmap = SelectObject(hMemDC, hBitmap);
 830         SetMapMode(hMemDC, MM_TEXT);
 831         hBrush = CreateSolidBrush(GetSysColor(COLOR_MENU));
 832         DrawIconEx(hMemDC, 0, 0, hIcon, cx, cy, 0, hBrush, DI_NORMAL);
 833         SelectObject (hMemDC, hOldBitmap);
 834         DeleteObject(hBrush);
 835         DeleteDC(hMemDC);
 836         ReleaseDC(hChild, hdc);
 837         hSysMenuBitmap = hBitmap;
 838       }
 839     }
 840
 841     if( !InsertMenuA(menu,0,MF_BYPOSITION | MF_BITMAP | MF_POPUP,
 842                      (UINT_PTR)hSysPopup, (LPSTR)hSysMenuBitmap))
 843     {
 844         TRACE("not inserted\n");
 845         DestroyMenu(hSysPopup);
 846         return 0;
 847     }
 848
 849     EnableMenuItem(hSysPopup, SC_SIZE, MF_BYCOMMAND | MF_GRAYED);
 850     EnableMenuItem(hSysPopup, SC_MOVE, MF_BYCOMMAND | MF_GRAYED);
 851     EnableMenuItem(hSysPopup, SC_MAXIMIZE, MF_BYCOMMAND | MF_GRAYED);
 852     SetMenuDefaultItem(hSysPopup, SC_CLOSE, FALSE);
 853
 854     /* redraw menu */
 855     DrawMenuBar(frame);
 856
 857     return 1;
 858 }
 859
 860 /**********************************************************************
 861  *                                      MDI_RestoreFrameMenu
 862  */
 863 static BOOL MDI_RestoreFrameMenu( HWND frame, HWND hChild )
 864 {
 865     MENUITEMINFOW menuInfo;
 866     HMENU menu = GetMenu( frame );
 867     INT nItems = GetMenuItemCount(menu) - 1;
 868     UINT iId = GetMenuItemID(menu,nItems) ;
 869
 870     TRACE("frame %p,child %p,nIt=%d,iId=%d\n",frame,hChild,nItems,iId);
 871
 872     /* if there is no system buttons then nothing to do */
 873     if(!(iId == SC_RESTORE || iId == SC_CLOSE) )
 874         return 0;
 875
 876     /*
 877      * Remove the system menu, If that menu is the icon of the window
 878      * as it is in win95, we have to delete the bitmap.
 879      */
 880     memset(&menuInfo, 0, sizeof(menuInfo));
 881     menuInfo.cbSize = sizeof(menuInfo);
 882     menuInfo.fMask  = MIIM_DATA | MIIM_TYPE;
 883
 884     GetMenuItemInfoW(menu,
 885                      0,
 886                      TRUE,
 887                      &menuInfo);
 888
 889     RemoveMenu(menu,0,MF_BYPOSITION);
 890
 891     if ( (menuInfo.fType & MFT_BITMAP)           &&
 892          (LOWORD(menuInfo.dwTypeData)!=0)        &&
 893          (LOWORD(menuInfo.dwTypeData)!=HBITMAP_16(hBmpClose)) )
 894     {
 895         DeleteObject(HBITMAP_32(LOWORD(menuInfo.dwTypeData)));
 896     }
 897
 898     /* close */
 899     DeleteMenu(menu, SC_CLOSE, MF_BYCOMMAND);
 900     /* restore */
 901     DeleteMenu(menu, SC_RESTORE, MF_BYCOMMAND);
 902     /* minimize */
 903     DeleteMenu(menu, SC_MINIMIZE, MF_BYCOMMAND);
 904
 905     DrawMenuBar(frame);
 906
 907     return 1;
 908 }
 909
 910
 911 /**********************************************************************
 912  *                                      MDI_UpdateFrameText
 913  *
 914  * used when child window is maximized/restored
 915  *
 916  * Note: lpTitle can be NULL
 917  */
 918 static void MDI_UpdateFrameText( HWND frame, HWND hClient, LPCWSTR lpTitle )
 919 {
 920     WCHAR   lpBuffer[MDI_MAXTITLELENGTH+1];
 921     MDICLIENTINFO *ci = get_client_info( hClient );
 922
 923     TRACE("frameText %s\n", debugstr_w(lpTitle));
 924
 925     if (!ci) return;
 926
 927     if (!lpTitle && !ci->frameTitle)  /* first time around, get title from the frame window */
 928     {
 929         GetWindowTextW( frame, lpBuffer, sizeof(lpBuffer)/sizeof(WCHAR) );
 930         lpTitle = lpBuffer;
 931     }
 932
 933     /* store new "default" title if lpTitle is not NULL */
 934     if (lpTitle)
 935     {
 936         if (ci->frameTitle) HeapFree( GetProcessHeap(), 0, ci->frameTitle );
 937         if ((ci->frameTitle = HeapAlloc( GetProcessHeap(), 0, (strlenW(lpTitle)+1)*sizeof(WCHAR))))
 938             strcpyW( ci->frameTitle, lpTitle );
 939     }
 940
 941     if (ci->frameTitle)
 942     {
 943         if (IsZoomed(ci->hwndActiveChild) && IsWindowVisible(ci->hwndActiveChild))
 944         {
 945             /* combine frame title and child title if possible */
 946
 947             static const WCHAR lpBracket[]  = {' ','-',' ','[',0};
 948             static const WCHAR lpBracket2[]  = {']',0};
 949             int i_frame_text_length = strlenW(ci->frameTitle);
 950
 951             lstrcpynW( lpBuffer, ci->frameTitle, MDI_MAXTITLELENGTH);
 952
 953             if( i_frame_text_length + 6 < MDI_MAXTITLELENGTH )
 954             {
 955                 strcatW( lpBuffer, lpBracket );
 956                 if (GetWindowTextW( ci->hwndActiveChild, lpBuffer + i_frame_text_length + 4,
 957                                     MDI_MAXTITLELENGTH - i_frame_text_length - 5 ))
 958                     strcatW( lpBuffer, lpBracket2 );
 959                 else
 960                     lpBuffer[i_frame_text_length] = 0;  /* remove bracket */
 961             }
 962         }
 963         else
 964         {
 965             lstrcpynW(lpBuffer, ci->frameTitle, MDI_MAXTITLELENGTH+1 );
 966         }
 967     }
 968     else
 969         lpBuffer[0] = '\0';
 970
 971     DefWindowProcW( frame, WM_SETTEXT, 0, (LPARAM)lpBuffer );
 972 }
 973
 974
 975 /* ----------------------------- Interface ---------------------------- */
 976
 977
 978 /**********************************************************************
 979  *              MDIClientWndProc_common
 980  */
 981 static LRESULT MDIClientWndProc_common( HWND hwnd, UINT message,
 982                                         WPARAM wParam, LPARAM lParam, BOOL unicode )
 983 {
 984     MDICLIENTINFO *ci;
 985
 986     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
 987
 988     if (!(ci = get_client_info( hwnd ))) return 0;
 989
 990     switch (message)
 991     {
 992       case WM_CREATE:
 993       {
 994           /* Since we are using only cs->lpCreateParams, we can safely
 995            * cast to LPCREATESTRUCTA here */
 996           LPCREATESTRUCTA cs = (LPCREATESTRUCTA)lParam;
 997           WND *wndPtr = WIN_GetPtr( hwnd );
 998
 999           wndPtr->flags |= WIN_ISMDICLIENT;
1000
1001         /* Translation layer doesn't know what's in the cs->lpCreateParams
1002          * so we have to keep track of what environment we're in. */
1003
1004         if( wndPtr->flags & WIN_ISWIN32 )
1005         {
1006             LPCLIENTCREATESTRUCT ccs = cs->lpCreateParams;
1007             ci->hWindowMenu     = ccs->hWindowMenu;
1008             ci->idFirstChild    = ccs->idFirstChild;
1009         }
1010         else
1011         {
1012             LPCLIENTCREATESTRUCT16 ccs = MapSL((SEGPTR)cs->lpCreateParams);
1013             ci->hWindowMenu     = HMENU_32(ccs->hWindowMenu);
1014             ci->idFirstChild    = ccs->idFirstChild;
1015         }
1016         WIN_ReleasePtr( wndPtr );
1017
1018         ci->child = NULL;
1019         ci->nActiveChildren     = 0;
1020         ci->nTotalCreated       = 0;
1021         ci->frameTitle          = NULL;
1022         ci->mdiFlags            = 0;
1023         ci->hFrameMenu = GetMenu(cs->hwndParent);
1024
1025         if (!hBmpClose) hBmpClose = CreateMDIMenuBitmap();
1026
1027         TRACE("Client created: hwnd %p, Window menu %p, idFirst = %u\n",
1028               hwnd, ci->hWindowMenu, ci->idFirstChild );
1029         return 0;
1030       }
1031
1032       case WM_DESTROY:
1033       {
1034           if( IsZoomed(ci->hwndActiveChild) )
1035               MDI_RestoreFrameMenu(GetParent(hwnd), ci->hwndActiveChild);
1036
1037           ci->nActiveChildren = 0;
1038           MDI_RefreshMenu(ci);
1039
1040           if (ci->child) HeapFree( GetProcessHeap(), 0, ci->child );
1041           if (ci->frameTitle) HeapFree( GetProcessHeap(), 0, ci->frameTitle );
1042
1043           return 0;
1044       }
1045
1046       case WM_MDIACTIVATE:
1047       {
1048         MDI_SwitchActiveChild( ci, (HWND)wParam );
1049         return 0;
1050       }
1051
1052       case WM_MDICASCADE:
1053         return MDICascade(hwnd, ci);
1054
1055       case WM_MDICREATE:
1056         if (lParam)
1057         {
1058             if (unicode)
1059             {
1060                 MDICREATESTRUCTW *csW = (MDICREATESTRUCTW *)lParam;
1061                 return (LRESULT)CreateWindowExW(WS_EX_MDICHILD, csW->szClass,
1062                                             csW->szTitle, csW->style,
1063                                             csW->x, csW->y, csW->cx, csW->cy,
1064                                             hwnd, 0, csW->hOwner,
1065                                             (LPVOID)csW->lParam);
1066             }
1067             else
1068             {
1069                 MDICREATESTRUCTA *csA = (MDICREATESTRUCTA *)lParam;
1070                 return (LRESULT)CreateWindowExA(WS_EX_MDICHILD, csA->szClass,
1071                                             csA->szTitle, csA->style,
1072                                             csA->x, csA->y, csA->cx, csA->cy,
1073                                             hwnd, 0, csA->hOwner,
1074                                             (LPVOID)csA->lParam);
1075             }
1076         }
1077         return 0;
1078
1079       case WM_MDIDESTROY:
1080           return MDIDestroyChild( hwnd, ci, WIN_GetFullHandle( (HWND)wParam ), TRUE );
1081
1082       case WM_MDIGETACTIVE:
1083           if (lParam) *(BOOL *)lParam = IsZoomed(ci->hwndActiveChild);
1084           return (LRESULT)ci->hwndActiveChild;
1085
1086       case WM_MDIICONARRANGE:
1087         ci->mdiFlags |= MDIF_NEEDUPDATE;
1088         ArrangeIconicWindows( hwnd );
1089         ci->sbRecalc = SB_BOTH+1;
1090         SendMessageW( hwnd, WM_MDICALCCHILDSCROLL, 0, 0 );
1091         return 0;
1092
1093       case WM_MDIMAXIMIZE:
1094         ShowWindow( (HWND)wParam, SW_MAXIMIZE );
1095         return 0;
1096
1097       case WM_MDINEXT: /* lParam != 0 means previous window */
1098       {
1099         HWND next = MDI_GetWindow( ci, WIN_GetFullHandle( (HWND)wParam ), !lParam, 0 );
1100         MDI_SwitchActiveChild( ci, next );
1101         break;
1102       }
1103
1104       case WM_MDIRESTORE:
1105         SendMessageW( (HWND)wParam, WM_SYSCOMMAND, SC_RESTORE, 0);
1106         return 0;
1107
1108       case WM_MDISETMENU:
1109           return MDISetMenu( hwnd, (HMENU)wParam, (HMENU)lParam );
1110
1111       case WM_MDIREFRESHMENU:
1112           return MDI_RefreshMenu( ci );
1113
1114       case WM_MDITILE:
1115         ci->mdiFlags |= MDIF_NEEDUPDATE;
1116         ShowScrollBar( hwnd, SB_BOTH, FALSE );
1117         MDITile( hwnd, ci, wParam );
1118         ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1119         return 0;
1120
1121       case WM_VSCROLL:
1122       case WM_HSCROLL:
1123         ci->mdiFlags |= MDIF_NEEDUPDATE;
1124         ScrollChildren( hwnd, message, wParam, lParam );
1125         ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1126         return 0;
1127
1128       case WM_SETFOCUS:
1129           if (ci->hwndActiveChild && !IsIconic( ci->hwndActiveChild ))
1130               SetFocus( ci->hwndActiveChild );
1131           return 0;
1132
1133       case WM_NCACTIVATE:
1134         if( ci->hwndActiveChild )
1135             SendMessageW(ci->hwndActiveChild, message, wParam, lParam);
1136         break;
1137
1138       case WM_PARENTNOTIFY:
1139         switch (LOWORD(wParam))
1140         {
1141         case WM_CREATE:
1142             if (GetWindowLongW((HWND)lParam, GWL_EXSTYLE) & WS_EX_MDICHILD)
1143             {
1144                 ci->nTotalCreated++;
1145                 ci->nActiveChildren++;
1146
1147                 if (!ci->child)
1148                     ci->child = HeapAlloc(GetProcessHeap(), 0, sizeof(HWND));
1149                 else
1150                     ci->child = HeapReAlloc(GetProcessHeap(), 0, ci->child, sizeof(HWND) * ci->nActiveChildren);
1151
1152                 TRACE("Adding MDI child %p, # of children %d\n",
1153                       (HWND)lParam, ci->nActiveChildren);
1154
1155                 ci->child[ci->nActiveChildren - 1] = (HWND)lParam;
1156             }
1157             break;
1158
1159         case WM_LBUTTONDOWN:
1160             {
1161             HWND child;
1162             POINT pt;
1163             pt.x = (short)LOWORD(lParam);
1164             pt.y = (short)HIWORD(lParam);
1165             child = ChildWindowFromPoint(hwnd, pt);
1166
1167             TRACE("notification from %p (%li,%li)\n",child,pt.x,pt.y);
1168
1169             if( child && child != hwnd && child != ci->hwndActiveChild )
1170                 SetWindowPos(child, 0,0,0,0,0, SWP_NOSIZE | SWP_NOMOVE );
1171             break;
1172             }
1173         }
1174         return 0;
1175
1176       case WM_SIZE:
1177         if( IsWindow(ci->hwndActiveChild) && IsZoomed(ci->hwndActiveChild) &&
1178             IsWindowVisible(ci->hwndActiveChild) )
1179         {
1180             RECT        rect;
1181
1182             rect.left = 0;
1183             rect.top = 0;
1184             rect.right = LOWORD(lParam);
1185             rect.bottom = HIWORD(lParam);
1186
1187             AdjustWindowRectEx(&rect, GetWindowLongA(ci->hwndActiveChild, GWL_STYLE),
1188                                0, GetWindowLongA(ci->hwndActiveChild, GWL_EXSTYLE) );
1189             MoveWindow(ci->hwndActiveChild, rect.left, rect.top,
1190                          rect.right - rect.left, rect.bottom - rect.top, 1);
1191         }
1192         else
1193             MDI_PostUpdate(hwnd, ci, SB_BOTH+1);
1194
1195         break;
1196
1197       case WM_MDICALCCHILDSCROLL:
1198         if( (ci->mdiFlags & MDIF_NEEDUPDATE) && ci->sbRecalc )
1199         {
1200             CalcChildScroll(hwnd, ci->sbRecalc-1);
1201             ci->sbRecalc = 0;
1202             ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1203         }
1204         return 0;
1205     }
1206     return unicode ? DefWindowProcW( hwnd, message, wParam, lParam ) :
1207                      DefWindowProcA( hwnd, message, wParam, lParam );
1208 }
1209
1210 /***********************************************************************
1211  *              MDIClientWndProcA
1212  */
1213 static LRESULT WINAPI MDIClientWndProcA( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
1214 {
1215     if (!IsWindow(hwnd)) return 0;
1216     return MDIClientWndProc_common( hwnd, message, wParam, lParam, FALSE );
1217 }
1218
1219 /***********************************************************************
1220  *              MDIClientWndProcW
1221  */
1222 static LRESULT WINAPI MDIClientWndProcW( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
1223 {
1224     if (!IsWindow(hwnd)) return 0;
1225     return MDIClientWndProc_common( hwnd, message, wParam, lParam, TRUE );
1226 }
1227
1228 /***********************************************************************
1229  *              DefFrameProcA (USER32.@)
1230  */
1231 LRESULT WINAPI DefFrameProcA( HWND hwnd, HWND hwndMDIClient,
1232                                 UINT message, WPARAM wParam, LPARAM lParam)
1233 {
1234     if (hwndMDIClient)
1235     {
1236         switch (message)
1237         {
1238         case WM_SETTEXT:
1239             {
1240                 DWORD len = MultiByteToWideChar( CP_ACP, 0, (LPSTR)lParam, -1, NULL, 0 );
1241                 LPWSTR text = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1242                 MultiByteToWideChar( CP_ACP, 0, (LPSTR)lParam, -1, text, len );
1243                 MDI_UpdateFrameText( hwnd, hwndMDIClient, text );
1244                 HeapFree( GetProcessHeap(), 0, text );
1245             }
1246             return 1; /* success. FIXME: check text length */
1247
1248         case WM_COMMAND:
1249         case WM_NCACTIVATE:
1250         case WM_NEXTMENU:
1251         case WM_SETFOCUS:
1252         case WM_SIZE:
1253             return DefFrameProcW( hwnd, hwndMDIClient, message, wParam, lParam );
1254         }
1255     }
1256     return DefWindowProcA(hwnd, message, wParam, lParam);
1257 }
1258
1259
1260 /***********************************************************************
1261  *              DefFrameProcW (USER32.@)
1262  */
1263 LRESULT WINAPI DefFrameProcW( HWND hwnd, HWND hwndMDIClient,
1264                                 UINT message, WPARAM wParam, LPARAM lParam)
1265 {
1266     MDICLIENTINFO *ci = get_client_info( hwndMDIClient );
1267
1268     TRACE("%p %p %04x (%s) %08x %08lx\n", hwnd, hwndMDIClient, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1269
1270     if (ci)
1271     {
1272         switch (message)
1273         {
1274         case WM_COMMAND:
1275             {
1276                 WORD id = LOWORD(wParam);
1277                 /* check for possible syscommands for maximized MDI child */
1278                 if (id <  ci->idFirstChild || id >= ci->idFirstChild + ci->nActiveChildren)
1279                 {
1280                     if( (id - 0xf000) & 0xf00f ) break;
1281                     if( !IsZoomed(ci->hwndActiveChild) ) break;
1282                     switch( id )
1283                     {
1284                     case SC_SIZE:
1285                     case SC_MOVE:
1286                     case SC_MINIMIZE:
1287                     case SC_MAXIMIZE:
1288                     case SC_NEXTWINDOW:
1289                     case SC_PREVWINDOW:
1290                     case SC_CLOSE:
1291                     case SC_RESTORE:
1292                         return SendMessageW( ci->hwndActiveChild, WM_SYSCOMMAND,
1293                                              wParam, lParam);
1294                     }
1295                 }
1296                 else
1297                 {
1298                     HWND childHwnd;
1299                     if (id - ci->idFirstChild == MDI_MOREWINDOWSLIMIT)
1300                         /* User chose "More Windows..." */
1301                         childHwnd = MDI_MoreWindowsDialog(hwndMDIClient);
1302                     else
1303                         /* User chose one of the windows listed in the "Windows" menu */
1304                         childHwnd = MDI_GetChildByID(hwndMDIClient, id, ci);
1305
1306                     if( childHwnd )
1307                         SendMessageW( hwndMDIClient, WM_MDIACTIVATE, (WPARAM)childHwnd, 0 );
1308                 }
1309             }
1310             break;
1311
1312         case WM_NCACTIVATE:
1313             SendMessageW(hwndMDIClient, message, wParam, lParam);
1314             break;
1315
1316         case WM_SETTEXT:
1317             MDI_UpdateFrameText( hwnd, hwndMDIClient, (LPWSTR)lParam );
1318             return 1; /* success. FIXME: check text length */
1319
1320         case WM_SETFOCUS:
1321             SetFocus(hwndMDIClient);
1322             break;
1323
1324         case WM_SIZE:
1325             MoveWindow(hwndMDIClient, 0, 0, LOWORD(lParam), HIWORD(lParam), TRUE);
1326             break;
1327
1328         case WM_NEXTMENU:
1329             {
1330                 MDINEXTMENU *next_menu = (MDINEXTMENU *)lParam;
1331
1332                 if (!IsIconic(hwnd) && ci->hwndActiveChild && !IsZoomed(ci->hwndActiveChild))
1333                 {
1334                     /* control menu is between the frame system menu and
1335                      * the first entry of menu bar */
1336                     WND *wndPtr = WIN_GetPtr(hwnd);
1337
1338                     if( (wParam == VK_LEFT && GetMenu(hwnd) == next_menu->hmenuIn) ||
1339                         (wParam == VK_RIGHT && GetSubMenu(wndPtr->hSysMenu, 0) == next_menu->hmenuIn) )
1340                     {
1341                         WIN_ReleasePtr(wndPtr);
1342                         wndPtr = WIN_GetPtr(ci->hwndActiveChild);
1343                         next_menu->hmenuNext = GetSubMenu(wndPtr->hSysMenu, 0);
1344                         next_menu->hwndNext = ci->hwndActiveChild;
1345                     }
1346                     WIN_ReleasePtr(wndPtr);
1347                 }
1348                 return 0;
1349             }
1350         }
1351     }
1352
1353     return DefWindowProcW( hwnd, message, wParam, lParam );
1354 }
1355
1356 /***********************************************************************
1357  *              DefMDIChildProcA (USER32.@)
1358  */
1359 LRESULT WINAPI DefMDIChildProcA( HWND hwnd, UINT message,
1360                                    WPARAM wParam, LPARAM lParam )
1361 {
1362     HWND client = GetParent(hwnd);
1363     MDICLIENTINFO *ci = get_client_info( client );
1364
1365     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1366
1367     hwnd = WIN_GetFullHandle( hwnd );
1368     if (!ci) return DefWindowProcA( hwnd, message, wParam, lParam );
1369
1370     switch (message)
1371     {
1372     case WM_SETTEXT:
1373         DefWindowProcA(hwnd, message, wParam, lParam);
1374         if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild) )
1375             MDI_UpdateFrameText( GetParent(client), client, NULL );
1376         return 1; /* success. FIXME: check text length */
1377
1378     case WM_GETMINMAXINFO:
1379     case WM_MENUCHAR:
1380     case WM_CLOSE:
1381     case WM_SETFOCUS:
1382     case WM_CHILDACTIVATE:
1383     case WM_SYSCOMMAND:
1384     case WM_SHOWWINDOW:
1385     case WM_SETVISIBLE:
1386     case WM_SIZE:
1387     case WM_NEXTMENU:
1388     case WM_SYSCHAR:
1389     case WM_DESTROY:
1390         return DefMDIChildProcW( hwnd, message, wParam, lParam );
1391     }
1392     return DefWindowProcA(hwnd, message, wParam, lParam);
1393 }
1394
1395
1396 /***********************************************************************
1397  *              DefMDIChildProcW (USER32.@)
1398  */
1399 LRESULT WINAPI DefMDIChildProcW( HWND hwnd, UINT message,
1400                                    WPARAM wParam, LPARAM lParam )
1401 {
1402     HWND client = GetParent(hwnd);
1403     MDICLIENTINFO *ci = get_client_info( client );
1404
1405     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1406
1407     hwnd = WIN_GetFullHandle( hwnd );
1408     if (!ci) return DefWindowProcW( hwnd, message, wParam, lParam );
1409
1410     switch (message)
1411     {
1412     case WM_SETTEXT:
1413         DefWindowProcW(hwnd, message, wParam, lParam);
1414         if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild) )
1415             MDI_UpdateFrameText( GetParent(client), client, NULL );
1416         return 1; /* success. FIXME: check text length */
1417
1418     case WM_GETMINMAXINFO:
1419         MDI_ChildGetMinMaxInfo( client, hwnd, (MINMAXINFO *)lParam );
1420         return 0;
1421
1422     case WM_MENUCHAR:
1423         return 0x00010000; /* MDI children don't have menu bars */
1424
1425     case WM_CLOSE:
1426         SendMessageW( client, WM_MDIDESTROY, (WPARAM)hwnd, 0 );
1427         return 0;
1428
1429     case WM_CHILDACTIVATE:
1430         MDI_ChildActivate( client, hwnd );
1431         return 0;
1432
1433     case WM_SYSCOMMAND:
1434         switch( wParam )
1435         {
1436         case SC_MOVE:
1437             if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild))
1438                 return 0;
1439             break;
1440         case SC_RESTORE:
1441         case SC_MINIMIZE:
1442             break;
1443         case SC_MAXIMIZE:
1444             if (ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild))
1445                 return SendMessageW( GetParent(client), message, wParam, lParam);
1446             break;
1447         case SC_NEXTWINDOW:
1448             SendMessageW( client, WM_MDINEXT, 0, 0);
1449             return 0;
1450         case SC_PREVWINDOW:
1451             SendMessageW( client, WM_MDINEXT, 0, 1);
1452             return 0;
1453         }
1454         break;
1455
1456     case WM_SHOWWINDOW:
1457     case WM_SETVISIBLE:
1458         if (IsZoomed(ci->hwndActiveChild)) ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1459         else MDI_PostUpdate(client, ci, SB_BOTH+1);
1460         break;
1461
1462     case WM_SIZE:
1463         if( hwnd == ci->hwndActiveChild )
1464         {
1465             if( wParam == SIZE_MAXIMIZED )
1466             {
1467                 TRACE("maximizing child %p\n", hwnd );
1468
1469                 MDI_AugmentFrameMenu( GetParent(client), hwnd );
1470             }
1471             else
1472                 MDI_RestoreFrameMenu( GetParent(client), hwnd );
1473         }
1474
1475         MDI_UpdateFrameText( GetParent(client), client, NULL );
1476         MDI_RefreshMenu(ci);
1477         MDI_PostUpdate(client, ci, SB_BOTH+1);
1478         break;
1479
1480     case WM_NEXTMENU:
1481         {
1482             MDINEXTMENU *next_menu = (MDINEXTMENU *)lParam;
1483             HWND parent = GetParent(client);
1484
1485             if( wParam == VK_LEFT )  /* switch to frame system menu */
1486             {
1487                 WND *wndPtr = WIN_GetPtr( parent );
1488                 next_menu->hmenuNext = GetSubMenu( wndPtr->hSysMenu, 0 );
1489                 WIN_ReleasePtr( wndPtr );
1490             }
1491             if( wParam == VK_RIGHT )  /* to frame menu bar */
1492             {
1493                 next_menu->hmenuNext = GetMenu(parent);
1494             }
1495             next_menu->hwndNext = parent;
1496             return 0;
1497         }
1498
1499     case WM_SYSCHAR:
1500         if (wParam == '-')
1501         {
1502             SendMessageW( hwnd, WM_SYSCOMMAND, (WPARAM)SC_KEYMENU, (DWORD)VK_SPACE);
1503             return 0;
1504         }
1505         break;
1506
1507     case WM_DESTROY:
1508         /* Remove itself from the Window menu */
1509         MDI_RefreshMenu(ci);
1510         break;
1511     }
1512     return DefWindowProcW(hwnd, message, wParam, lParam);
1513 }
1514
1515 /**********************************************************************
1516  *              CreateMDIWindowA (USER32.@) Creates a MDI child
1517  *
1518  * RETURNS
1519  *    Success: Handle to created window
1520  *    Failure: NULL
1521  */
1522 HWND WINAPI CreateMDIWindowA(
1523     LPCSTR lpClassName,    /* [in] Pointer to registered child class name */
1524     LPCSTR lpWindowName,   /* [in] Pointer to window name */
1525     DWORD dwStyle,         /* [in] Window style */
1526     INT X,               /* [in] Horizontal position of window */
1527     INT Y,               /* [in] Vertical position of window */
1528     INT nWidth,          /* [in] Width of window */
1529     INT nHeight,         /* [in] Height of window */
1530     HWND hWndParent,     /* [in] Handle to parent window */
1531     HINSTANCE hInstance, /* [in] Handle to application instance */
1532     LPARAM lParam)         /* [in] Application-defined value */
1533 {
1534     TRACE("(%s,%s,%08lx,%d,%d,%d,%d,%p,%p,%08lx)\n",
1535           debugstr_a(lpClassName),debugstr_a(lpWindowName),dwStyle,X,Y,
1536           nWidth,nHeight,hWndParent,hInstance,lParam);
1537
1538     return CreateWindowExA(WS_EX_MDICHILD, lpClassName, lpWindowName,
1539                            dwStyle, X, Y, nWidth, nHeight, hWndParent,
1540                            0, hInstance, (LPVOID)lParam);
1541 }
1542
1543 /***********************************************************************
1544  *              CreateMDIWindowW (USER32.@) Creates a MDI child
1545  *
1546  * RETURNS
1547  *    Success: Handle to created window
1548  *    Failure: NULL
1549  */
1550 HWND WINAPI CreateMDIWindowW(
1551     LPCWSTR lpClassName,    /* [in] Pointer to registered child class name */
1552     LPCWSTR lpWindowName,   /* [in] Pointer to window name */
1553     DWORD dwStyle,         /* [in] Window style */
1554     INT X,               /* [in] Horizontal position of window */
1555     INT Y,               /* [in] Vertical position of window */
1556     INT nWidth,          /* [in] Width of window */
1557     INT nHeight,         /* [in] Height of window */
1558     HWND hWndParent,     /* [in] Handle to parent window */
1559     HINSTANCE hInstance, /* [in] Handle to application instance */
1560     LPARAM lParam)         /* [in] Application-defined value */
1561 {
1562     TRACE("(%s,%s,%08lx,%d,%d,%d,%d,%p,%p,%08lx)\n",
1563           debugstr_w(lpClassName), debugstr_w(lpWindowName), dwStyle, X, Y,
1564           nWidth, nHeight, hWndParent, hInstance, lParam);
1565
1566     return CreateWindowExW(WS_EX_MDICHILD, lpClassName, lpWindowName,
1567                            dwStyle, X, Y, nWidth, nHeight, hWndParent,
1568                            0, hInstance, (LPVOID)lParam);
1569 }
1570
1571 /**********************************************************************
1572  *              TranslateMDISysAccel (USER32.@)
1573  */
1574 BOOL WINAPI TranslateMDISysAccel( HWND hwndClient, LPMSG msg )
1575 {
1576     if (msg->message == WM_KEYDOWN || msg->message == WM_SYSKEYDOWN)
1577     {
1578         MDICLIENTINFO *ci = get_client_info( hwndClient );
1579         WPARAM wParam = 0;
1580
1581         if (!ci || !IsWindowEnabled(ci->hwndActiveChild)) return 0;
1582
1583         /* translate if the Ctrl key is down and Alt not. */
1584
1585         if( (GetKeyState(VK_CONTROL) & 0x8000) && !(GetKeyState(VK_MENU) & 0x8000))
1586         {
1587             switch( msg->wParam )
1588             {
1589             case VK_F6:
1590             case VK_TAB:
1591                 wParam = ( GetKeyState(VK_SHIFT) & 0x8000 ) ? SC_NEXTWINDOW : SC_PREVWINDOW;
1592                 break;
1593             case VK_F4:
1594             case VK_RBUTTON:
1595                 wParam = SC_CLOSE;
1596                 break;
1597             default:
1598                 return 0;
1599             }
1600             TRACE("wParam = %04x\n", wParam);
1601             SendMessageW(ci->hwndActiveChild, WM_SYSCOMMAND, wParam, (LPARAM)msg->wParam);
1602             return 1;
1603         }
1604     }
1605     return 0; /* failure */
1606 }
1607
1608 /***********************************************************************
1609  *              CalcChildScroll (USER32.@)
1610  */
1611 void WINAPI CalcChildScroll( HWND hwnd, INT scroll )
1612 {
1613     SCROLLINFO info;
1614     RECT childRect, clientRect;
1615     HWND *list;
1616
1617     GetClientRect( hwnd, &clientRect );
1618     SetRectEmpty( &childRect );
1619
1620     if ((list = WIN_ListChildren( hwnd )))
1621     {
1622         int i;
1623         for (i = 0; list[i]; i++)
1624         {
1625             DWORD style = GetWindowLongW( list[i], GWL_STYLE );
1626             if (style & WS_MAXIMIZE)
1627             {
1628                 HeapFree( GetProcessHeap(), 0, list );
1629                 ShowScrollBar( hwnd, SB_BOTH, FALSE );
1630                 return;
1631             }
1632             if (style & WS_VISIBLE)
1633             {
1634                 WND *pWnd = WIN_FindWndPtr( list[i] );
1635                 UnionRect( &childRect, &pWnd->rectWindow, &childRect );
1636                 WIN_ReleaseWndPtr( pWnd );
1637             }
1638         }
1639         HeapFree( GetProcessHeap(), 0, list );
1640     }
1641     UnionRect( &childRect, &clientRect, &childRect );
1642
1643     /* set common info values */
1644     info.cbSize = sizeof(info);
1645     info.fMask = SIF_POS | SIF_RANGE;
1646
1647     /* set the specific */
1648     switch( scroll )
1649     {
1650         case SB_BOTH:
1651         case SB_HORZ:
1652                         info.nMin = childRect.left;
1653                         info.nMax = childRect.right - clientRect.right;
1654                         info.nPos = clientRect.left - childRect.left;
1655                         SetScrollInfo(hwnd, scroll, &info, TRUE);
1656                         if (scroll == SB_HORZ) break;
1657                         /* fall through */
1658         case SB_VERT:
1659                         info.nMin = childRect.top;
1660                         info.nMax = childRect.bottom - clientRect.bottom;
1661                         info.nPos = clientRect.top - childRect.top;
1662                         SetScrollInfo(hwnd, scroll, &info, TRUE);
1663                         break;
1664     }
1665 }
1666
1667
1668 /***********************************************************************
1669  *              ScrollChildren (USER32.@)
1670  */
1671 void WINAPI ScrollChildren(HWND hWnd, UINT uMsg, WPARAM wParam,
1672                              LPARAM lParam)
1673 {
1674     INT newPos = -1;
1675     INT curPos, length, minPos, maxPos, shift;
1676     RECT rect;
1677
1678     GetClientRect( hWnd, &rect );
1679
1680     switch(uMsg)
1681     {
1682     case WM_HSCROLL:
1683         GetScrollRange(hWnd,SB_HORZ,&minPos,&maxPos);
1684         curPos = GetScrollPos(hWnd,SB_HORZ);
1685         length = (rect.right - rect.left) / 2;
1686         shift = GetSystemMetrics(SM_CYHSCROLL);
1687         break;
1688     case WM_VSCROLL:
1689         GetScrollRange(hWnd,SB_VERT,&minPos,&maxPos);
1690         curPos = GetScrollPos(hWnd,SB_VERT);
1691         length = (rect.bottom - rect.top) / 2;
1692         shift = GetSystemMetrics(SM_CXVSCROLL);
1693         break;
1694     default:
1695         return;
1696     }
1697
1698     switch( wParam )
1699     {
1700         case SB_LINEUP:
1701                         newPos = curPos - shift;
1702                         break;
1703         case SB_LINEDOWN:
1704                         newPos = curPos + shift;
1705                         break;
1706         case SB_PAGEUP:
1707                         newPos = curPos - length;
1708                         break;
1709         case SB_PAGEDOWN:
1710                         newPos = curPos + length;
1711                         break;
1712
1713         case SB_THUMBPOSITION:
1714                         newPos = LOWORD(lParam);
1715                         break;
1716
1717         case SB_THUMBTRACK:
1718                         return;
1719
1720         case SB_TOP:
1721                         newPos = minPos;
1722                         break;
1723         case SB_BOTTOM:
1724                         newPos = maxPos;
1725                         break;
1726         case SB_ENDSCROLL:
1727                         CalcChildScroll(hWnd,(uMsg == WM_VSCROLL)?SB_VERT:SB_HORZ);
1728                         return;
1729     }
1730
1731     if( newPos > maxPos )
1732         newPos = maxPos;
1733     else
1734         if( newPos < minPos )
1735             newPos = minPos;
1736
1737     SetScrollPos(hWnd, (uMsg == WM_VSCROLL)?SB_VERT:SB_HORZ , newPos, TRUE);
1738
1739     if( uMsg == WM_VSCROLL )
1740         ScrollWindowEx(hWnd ,0 ,curPos - newPos, NULL, NULL, 0, NULL,
1741                         SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
1742     else
1743         ScrollWindowEx(hWnd ,curPos - newPos, 0, NULL, NULL, 0, NULL,
1744                         SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
1745 }
1746
1747
1748 /******************************************************************************
1749  *              CascadeWindows (USER32.@) Cascades MDI child windows
1750  *
1751  * RETURNS
1752  *    Success: Number of cascaded windows.
1753  *    Failure: 0
1754  */
1755 WORD WINAPI
1756 CascadeWindows (HWND hwndParent, UINT wFlags, const LPRECT lpRect,
1757                 UINT cKids, const HWND *lpKids)
1758 {
1759     FIXME("(%p,0x%08x,...,%u,...): stub\n", hwndParent, wFlags, cKids);
1760     return 0;
1761 }
1762
1763
1764 /******************************************************************************
1765  *              TileWindows (USER32.@) Tiles MDI child windows
1766  *
1767  * RETURNS
1768  *    Success: Number of tiled windows.
1769  *    Failure: 0
1770  */
1771 WORD WINAPI
1772 TileWindows (HWND hwndParent, UINT wFlags, const LPRECT lpRect,
1773              UINT cKids, const HWND *lpKids)
1774 {
1775     FIXME("(%p,0x%08x,...,%u,...): stub\n", hwndParent, wFlags, cKids);
1776     return 0;
1777 }
1778
1779 /************************************************************************
1780  *              "More Windows..." functionality
1781  */
1782
1783 /*              MDI_MoreWindowsDlgProc
1784  *
1785  *    This function will process the messages sent to the "More Windows..."
1786  *    dialog.
1787  *    Return values:  0    = cancel pressed
1788  *                    HWND = ok pressed or double-click in the list...
1789  *
1790  */
1791
1792 static INT_PTR WINAPI MDI_MoreWindowsDlgProc (HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam)
1793 {
1794     switch (iMsg)
1795     {
1796        case WM_INITDIALOG:
1797        {
1798            UINT widest       = 0;
1799            UINT length;
1800            UINT i;
1801            MDICLIENTINFO *ci = get_client_info( (HWND)lParam );
1802            HWND hListBox = GetDlgItem(hDlg, MDI_IDC_LISTBOX);
1803
1804            for (i = 0; i < ci->nActiveChildren; i++)
1805            {
1806                WCHAR buffer[MDI_MAXTITLELENGTH];
1807
1808                if (!InternalGetWindowText( ci->child[i], buffer, sizeof(buffer)/sizeof(WCHAR) ))
1809                    continue;
1810                SendMessageW(hListBox, LB_ADDSTRING, 0, (LPARAM)buffer );
1811                SendMessageW(hListBox, LB_SETITEMDATA, i, (LPARAM)ci->child[i] );
1812                length = strlenW(buffer);  /* FIXME: should use GetTextExtentPoint */
1813                if (length > widest)
1814                    widest = length;
1815            }
1816            /* Make sure the horizontal scrollbar scrolls ok */
1817            SendMessageW(hListBox, LB_SETHORIZONTALEXTENT, widest * 6, 0);
1818
1819            /* Set the current selection */
1820            SendMessageW(hListBox, LB_SETCURSEL, MDI_MOREWINDOWSLIMIT, 0);
1821            return TRUE;
1822        }
1823
1824        case WM_COMMAND:
1825            switch (LOWORD(wParam))
1826            {
1827                 default:
1828                     if (HIWORD(wParam) != LBN_DBLCLK) break;
1829                     /* fall through */
1830                 case IDOK:
1831                 {
1832                     /*  windows are sorted by menu ID, so we must return the
1833                      *  window associated to the given id
1834                      */
1835                     HWND hListBox     = GetDlgItem(hDlg, MDI_IDC_LISTBOX);
1836                     UINT index        = SendMessageW(hListBox, LB_GETCURSEL, 0, 0);
1837                     LRESULT res = SendMessageW(hListBox, LB_GETITEMDATA, index, 0);
1838                     EndDialog(hDlg, res);
1839                     return TRUE;
1840                 }
1841                 case IDCANCEL:
1842                     EndDialog(hDlg, 0);
1843                     return TRUE;
1844            }
1845            break;
1846     }
1847     return FALSE;
1848 }
1849
1850 /*
1851  *
1852  *                      MDI_MoreWindowsDialog
1853  *
1854  *     Prompts the user with a listbox containing the opened
1855  *     documents. The user can then choose a windows and click
1856  *     on OK to set the current window to the one selected, or
1857  *     CANCEL to cancel. The function returns a handle to the
1858  *     selected window.
1859  */
1860
1861 static HWND MDI_MoreWindowsDialog(HWND hwnd)
1862 {
1863     LPCVOID template;
1864     HRSRC hRes;
1865     HANDLE hDlgTmpl;
1866
1867     hRes = FindResourceA(user32_module, "MDI_MOREWINDOWS", (LPSTR)RT_DIALOG);
1868
1869     if (hRes == 0)
1870         return 0;
1871
1872     hDlgTmpl = LoadResource(user32_module, hRes );
1873
1874     if (hDlgTmpl == 0)
1875         return 0;
1876
1877     template = LockResource( hDlgTmpl );
1878
1879     if (template == 0)
1880         return 0;
1881
1882     return (HWND) DialogBoxIndirectParamA(user32_module,
1883                                           (LPDLGTEMPLATEA) template,
1884                                           hwnd, MDI_MoreWindowsDlgProc, (LPARAM) hwnd);
1885 }