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/unicode.h"
  95 #include "win.h"
  96 #include "nonclient.h"
  97 #include "controls.h"
  98 #include "message.h"
  99 #include "user.h"
 100 #include "struct32.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 (GetWindowLongW( ci->child[i], GWL_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( IsZoomed(ci->hwndActiveChild) && hmenuFrame && hmenuFrame!= ci->hFrameMenu )
 300         MDI_RestoreFrameMenu( hwndFrame, ci->hwndActiveChild );
 301
 302     if( hmenuWindow && hmenuWindow != ci->hWindowMenu )
 303     {
 304         /* delete menu items from ci->hWindowMenu
 305          * and add them to hmenuWindow */
 306         /* Agent newsreader calls this function with  ci->hWindowMenu == NULL */
 307         if( ci->hWindowMenu && ci->nActiveChildren )
 308         {
 309             UINT nActiveChildren_old = ci->nActiveChildren;
 310
 311             /* Remove all items from old Window menu */
 312             ci->nActiveChildren = 0;
 313             MDI_RefreshMenu(ci);
 314
 315             ci->hWindowMenu = hmenuWindow;
 316
 317             /* Add items to the new Window menu */
 318             ci->nActiveChildren = nActiveChildren_old;
 319             MDI_RefreshMenu(ci);
 320         }
 321         else
 322             ci->hWindowMenu = hmenuWindow;
 323     }
 324
 325     if (hmenuFrame)
 326     {
 327         SetMenu(hwndFrame, hmenuFrame);
 328         if( hmenuFrame != ci->hFrameMenu )
 329         {
 330             HMENU oldFrameMenu = ci->hFrameMenu;
 331
 332             ci->hFrameMenu = hmenuFrame;
 333             if( IsZoomed(ci->hwndActiveChild) )
 334                 MDI_AugmentFrameMenu( hwndFrame, ci->hwndActiveChild );
 335
 336             return (LRESULT)oldFrameMenu;
 337         }
 338     }
 339     else
 340     {
 341         /* SetMenu() may already have been called, meaning that this window
 342          * already has its menu. But they may have done a SetMenu() on
 343          * an MDI window, and called MDISetMenu() after the fact, meaning
 344          * that the "if" to this "else" wouldn't catch the need to
 345          * augment the frame menu.
 346          */
 347         if( IsZoomed(ci->hwndActiveChild) )
 348             MDI_AugmentFrameMenu( hwndFrame, ci->hwndActiveChild );
 349     }
 350
 351     return 0;
 352 }
 353
 354 /**********************************************************************
 355  *            MDIRefreshMenu
 356  */
 357 static LRESULT MDI_RefreshMenu(MDICLIENTINFO *ci)
 358 {
 359     UINT i, count, visible, separator_pos, id;
 360     WCHAR buf[MDI_MAXTITLELENGTH];
 361
 362     TRACE("children %u, window menu %p\n", ci->nActiveChildren, ci->hWindowMenu);
 363
 364     if (!ci->hWindowMenu)
 365         return 0;
 366
 367     if (!IsMenu(ci->hWindowMenu))
 368     {
 369         WARN("Window menu handle %p is no more valid\n", ci->hWindowMenu);
 370         return 0;
 371     }
 372
 373     /* Windows finds the last separator in the menu, and if after it
 374      * there is a menu item with MDI magic ID removes all existing
 375      * menu items after it, and then adds visible MDI children.
 376      */
 377     id = (UINT)-1;
 378     separator_pos = 0;
 379     count = GetMenuItemCount(ci->hWindowMenu);
 380     for (i = 0; i < count; i++)
 381     {
 382         MENUITEMINFOW mii;
 383
 384         memset(&mii, 0, sizeof(mii));
 385         mii.cbSize = sizeof(mii);
 386         mii.fMask  = MIIM_TYPE;
 387         if (GetMenuItemInfoW(ci->hWindowMenu, i, TRUE, &mii))
 388         {
 389             if (mii.fType & MF_SEPARATOR)
 390             {
 391                 separator_pos = i;
 392
 393                 /* Windows checks only ID of the menu item */
 394                 memset(&mii, 0, sizeof(mii));
 395                 mii.cbSize = sizeof(mii);
 396                 mii.fMask  = MIIM_ID;
 397                 if (GetMenuItemInfoW(ci->hWindowMenu, i + 1, TRUE, &mii))
 398                     id = mii.wID;
 399             }
 400         }
 401     }
 402
 403     if (separator_pos && id == ci->idFirstChild)
 404     {
 405         for (i = separator_pos; i < count; i++)
 406             RemoveMenu(ci->hWindowMenu, separator_pos, MF_BYPOSITION);
 407     }
 408
 409     visible = 0;
 410     for (i = 0; i < ci->nActiveChildren; i++)
 411     {
 412         if (GetWindowLongW(ci->child[i], GWL_STYLE) & WS_VISIBLE)
 413         {
 414             id = ci->idFirstChild + visible;
 415
 416             if (visible == MDI_MOREWINDOWSLIMIT)
 417             {
 418                 LoadStringW(user32_module, IDS_MDI_MOREWINDOWS, buf, sizeof(buf)/sizeof(WCHAR));
 419                 AppendMenuW(ci->hWindowMenu, MF_STRING, id, buf);
 420                 break;
 421             }
 422
 423             if (!visible)
 424                 /* Visio expects that separator has id 0 */
 425                 AppendMenuW(ci->hWindowMenu, MF_SEPARATOR, 0, NULL);
 426
 427             visible++;
 428
 429             SetWindowLongW(ci->child[i], GWL_ID, id);
 430
 431             buf[0] = '&';
 432             buf[1] = '0' + visible;
 433             buf[2] = ' ';
 434             InternalGetWindowText(ci->child[i], buf + 3, sizeof(buf)/sizeof(WCHAR) - 3);
 435             TRACE("Adding %p, id %u %s\n", ci->child[i], id, debugstr_w(buf));
 436             AppendMenuW(ci->hWindowMenu, MF_STRING, id, buf);
 437
 438             if (ci->child[i] == ci->hwndActiveChild)
 439                 CheckMenuItem(ci->hWindowMenu, id, MF_CHECKED);
 440         }
 441         else
 442             TRACE("MDI child %p is not visible, skipping\n", ci->child[i]);
 443     }
 444
 445     return (LRESULT)ci->hFrameMenu;
 446 }
 447
 448
 449 /* ------------------ MDI child window functions ---------------------- */
 450
 451 /**********************************************************************
 452  *                      MDI_ChildGetMinMaxInfo
 453  *
 454  * Note: The rule here is that client rect of the maximized MDI child
 455  *       is equal to the client rect of the MDI client window.
 456  */
 457 static void MDI_ChildGetMinMaxInfo( HWND client, HWND hwnd, MINMAXINFO* lpMinMax )
 458 {
 459     RECT rect;
 460
 461     GetClientRect( client, &rect );
 462     AdjustWindowRectEx( &rect, GetWindowLongW( hwnd, GWL_STYLE ),
 463                         0, GetWindowLongW( hwnd, GWL_EXSTYLE ));
 464
 465     lpMinMax->ptMaxSize.x = rect.right -= rect.left;
 466     lpMinMax->ptMaxSize.y = rect.bottom -= rect.top;
 467
 468     lpMinMax->ptMaxPosition.x = rect.left;
 469     lpMinMax->ptMaxPosition.y = rect.top;
 470
 471     TRACE("max rect (%ld,%ld - %ld, %ld)\n",
 472                         rect.left,rect.top,rect.right,rect.bottom);
 473 }
 474
 475 /**********************************************************************
 476  *                      MDI_SwitchActiveChild
 477  *
 478  * Note: SetWindowPos sends WM_CHILDACTIVATE to the child window that is
 479  *       being activated
 480  */
 481 static void MDI_SwitchActiveChild( HWND clientHwnd, HWND childHwnd,
 482                                    BOOL bNextWindow )
 483 {
 484     HWND           hwndTo    = 0;
 485     HWND           hwndPrev  = 0;
 486     MDICLIENTINFO *ci = get_client_info( clientHwnd );
 487
 488     hwndTo = MDI_GetWindow(ci, childHwnd, bNextWindow, 0);
 489     hwndPrev = ci->hwndActiveChild;
 490
 491     TRACE("from %p, to %p\n",childHwnd,hwndTo);
 492
 493     if ( !hwndTo )
 494         MDI_ChildActivate( clientHwnd, 0 );
 495     else if ( hwndTo != hwndPrev )
 496         SetWindowPos( hwndTo, HWND_TOP, 0, 0, 0, 0,
 497                       SWP_NOMOVE | SWP_NOSIZE );
 498 }
 499
 500
 501 /**********************************************************************
 502  *                                      MDIDestroyChild
 503  */
 504 static LRESULT MDIDestroyChild( HWND parent, MDICLIENTINFO *ci,
 505                                 HWND child, BOOL flagDestroy )
 506 {
 507     UINT i;
 508
 509     TRACE("# of managed children %u\n", ci->nActiveChildren);
 510
 511     if( child == ci->hwndActiveChild )
 512     {
 513         MDI_SwitchActiveChild(parent, child, TRUE);
 514         ShowWindow(child, SW_HIDE);
 515     }
 516
 517     for (i = 0; i < ci->nActiveChildren; i++)
 518     {
 519         if (ci->child[i] == child)
 520         {
 521             HWND *new_child = HeapAlloc(GetProcessHeap(), 0, (ci->nActiveChildren - 1) * sizeof(HWND));
 522             memcpy(new_child, ci->child, i * sizeof(HWND));
 523             if (i + 1 < ci->nActiveChildren)
 524                 memcpy(new_child + i, ci->child + i + 1, (ci->nActiveChildren - i - 1) * sizeof(HWND));
 525             HeapFree(GetProcessHeap(), 0, ci->child);
 526             ci->child = new_child;
 527
 528             ci->nActiveChildren--;
 529             break;
 530         }
 531     }
 532
 533     if (flagDestroy)
 534     {
 535         MDI_PostUpdate(GetParent(child), ci, SB_BOTH+1);
 536         DestroyWindow(child);
 537     }
 538
 539     TRACE("child destroyed - %p\n", child);
 540     return 0;
 541 }
 542
 543
 544 /**********************************************************************
 545  *                                      MDI_ChildActivate
 546  *
 547  * Note: hWndChild is NULL when last child is being destroyed
 548  */
 549 static LONG MDI_ChildActivate( HWND client, HWND child )
 550 {
 551     MDICLIENTINFO *clientInfo;
 552     HWND prevActiveWnd, frame;
 553     BOOL isActiveFrameWnd;
 554
 555     if (child && (!IsWindowEnabled( child ))) return 0;
 556
 557     clientInfo = get_client_info( client );
 558
 559     TRACE("%p\n", child);
 560
 561     frame = GetParent(client);
 562     isActiveFrameWnd = (GetActiveWindow() == frame);
 563     prevActiveWnd = clientInfo->hwndActiveChild;
 564
 565     if (prevActiveWnd == child) return 0;
 566
 567     /* deactivate prev. active child */
 568     if(prevActiveWnd)
 569     {
 570         SendMessageW( prevActiveWnd, WM_NCACTIVATE, FALSE, 0L );
 571         SendMessageW( prevActiveWnd, WM_MDIACTIVATE, (WPARAM)prevActiveWnd, (LPARAM)child);
 572     }
 573
 574     clientInfo->hwndActiveChild = child;
 575
 576     /* set appearance */
 577     if (IsZoomed(prevActiveWnd) && prevActiveWnd != child)
 578     {
 579         if( child )
 580         {
 581             INT cmd = SW_SHOWNORMAL;
 582             HMENU hSysMenu = GetSystemMenu(child, FALSE);
 583             UINT state = 0;
 584             if (hSysMenu)
 585                 state = GetMenuState(hSysMenu, SC_MAXIMIZE, MF_BYCOMMAND);
 586             if (state != 0xFFFFFFFF && !(state & (MF_DISABLED | MF_GRAYED)))
 587                 cmd = SW_SHOWMAXIMIZED;
 588
 589             ShowWindow( child, cmd );
 590         }
 591         else
 592             MDI_RestoreFrameMenu(frame, child);
 593     }
 594
 595     MDI_UpdateFrameText(frame, client, NULL);
 596
 597     /* check if we have any children left */
 598     if( !child )
 599     {
 600         if( isActiveFrameWnd )
 601             SetFocus( client );
 602         return 0;
 603     }
 604
 605     MDI_RefreshMenu(clientInfo);
 606
 607     if( isActiveFrameWnd )
 608         SendMessageW( child, WM_NCACTIVATE, TRUE, 0L);
 609
 610     SendMessageW( child, WM_MDIACTIVATE, (WPARAM)prevActiveWnd, (LPARAM)child );
 611     return TRUE;
 612 }
 613
 614 /* -------------------- MDI client window functions ------------------- */
 615
 616 /**********************************************************************
 617  *                              CreateMDIMenuBitmap
 618  */
 619 static HBITMAP CreateMDIMenuBitmap(void)
 620 {
 621  HDC            hDCSrc  = CreateCompatibleDC(0);
 622  HDC            hDCDest = CreateCompatibleDC(hDCSrc);
 623  HBITMAP        hbClose = LoadBitmapW(0, MAKEINTRESOURCEW(OBM_OLD_CLOSE) );
 624  HBITMAP        hbCopy;
 625  HBITMAP        hobjSrc, hobjDest;
 626
 627  hobjSrc = SelectObject(hDCSrc, hbClose);
 628  hbCopy = CreateCompatibleBitmap(hDCSrc,GetSystemMetrics(SM_CXSIZE),GetSystemMetrics(SM_CYSIZE));
 629  hobjDest = SelectObject(hDCDest, hbCopy);
 630
 631  BitBlt(hDCDest, 0, 0, GetSystemMetrics(SM_CXSIZE), GetSystemMetrics(SM_CYSIZE),
 632           hDCSrc, GetSystemMetrics(SM_CXSIZE), 0, SRCCOPY);
 633
 634  SelectObject(hDCSrc, hobjSrc);
 635  DeleteObject(hbClose);
 636  DeleteDC(hDCSrc);
 637
 638  hobjSrc = SelectObject( hDCDest, GetStockObject(BLACK_PEN) );
 639
 640  MoveToEx( hDCDest, GetSystemMetrics(SM_CXSIZE) - 1, 0, NULL );
 641  LineTo( hDCDest, GetSystemMetrics(SM_CXSIZE) - 1, GetSystemMetrics(SM_CYSIZE) - 1);
 642
 643  SelectObject(hDCDest, hobjSrc );
 644  SelectObject(hDCDest, hobjDest);
 645  DeleteDC(hDCDest);
 646
 647  return hbCopy;
 648 }
 649
 650 /**********************************************************************
 651  *                              MDICascade
 652  */
 653 static LONG MDICascade( HWND client, MDICLIENTINFO *ci )
 654 {
 655     HWND *win_array;
 656     BOOL has_icons = FALSE;
 657     int i, total;
 658
 659     if (IsZoomed(ci->hwndActiveChild))
 660         SendMessageA(client, WM_MDIRESTORE, (WPARAM)ci->hwndActiveChild, 0);
 661
 662     if (ci->nActiveChildren == 0) return 0;
 663
 664     if (!(win_array = WIN_ListChildren( client ))) return 0;
 665
 666     /* remove all the windows we don't want */
 667     for (i = total = 0; win_array[i]; i++)
 668     {
 669         if (!IsWindowVisible( win_array[i] )) continue;
 670         if (GetWindow( win_array[i], GW_OWNER )) continue; /* skip owned windows */
 671         if (IsIconic( win_array[i] ))
 672         {
 673             has_icons = TRUE;
 674             continue;
 675         }
 676         win_array[total++] = win_array[i];
 677     }
 678     win_array[total] = 0;
 679
 680     if (total)
 681     {
 682         INT delta = 0, n = 0, i;
 683         POINT pos[2];
 684         if (has_icons) delta = GetSystemMetrics(SM_CYICONSPACING) + GetSystemMetrics(SM_CYICON);
 685
 686         /* walk the list (backwards) and move windows */
 687         for (i = total - 1; i >= 0; i--)
 688         {
 689             TRACE("move %p to (%ld,%ld) size [%ld,%ld]\n",
 690                   win_array[i], pos[0].x, pos[0].y, pos[1].x, pos[1].y);
 691
 692             MDI_CalcDefaultChildPos(client, n++, pos, delta);
 693             SetWindowPos( win_array[i], 0, pos[0].x, pos[0].y, pos[1].x, pos[1].y,
 694                           SWP_DRAWFRAME | SWP_NOACTIVATE | SWP_NOZORDER);
 695         }
 696     }
 697     HeapFree( GetProcessHeap(), 0, win_array );
 698
 699     if (has_icons) ArrangeIconicWindows( client );
 700     return 0;
 701 }
 702
 703 /**********************************************************************
 704  *                                      MDITile
 705  */
 706 static void MDITile( HWND client, MDICLIENTINFO *ci, WPARAM wParam )
 707 {
 708     HWND *win_array;
 709     int i, total;
 710     BOOL has_icons = FALSE;
 711
 712     if (IsZoomed(ci->hwndActiveChild))
 713         SendMessageA(client, WM_MDIRESTORE, (WPARAM)ci->hwndActiveChild, 0);
 714
 715     if (ci->nActiveChildren == 0) return;
 716
 717     if (!(win_array = WIN_ListChildren( client ))) return;
 718
 719     /* remove all the windows we don't want */
 720     for (i = total = 0; win_array[i]; i++)
 721     {
 722         if (!IsWindowVisible( win_array[i] )) continue;
 723         if (GetWindow( win_array[i], GW_OWNER )) continue; /* skip owned windows (icon titles) */
 724         if (IsIconic( win_array[i] ))
 725         {
 726             has_icons = TRUE;
 727             continue;
 728         }
 729         if ((wParam & MDITILE_SKIPDISABLED) && !IsWindowEnabled( win_array[i] )) continue;
 730         win_array[total++] = win_array[i];
 731     }
 732     win_array[total] = 0;
 733
 734     TRACE("%u windows to tile\n", total);
 735
 736     if (total)
 737     {
 738         HWND *pWnd = win_array;
 739         RECT rect;
 740         int x, y, xsize, ysize;
 741         int rows, columns, r, c, i;
 742
 743         GetClientRect(client,&rect);
 744         rows    = (int) sqrt((double)total);
 745         columns = total / rows;
 746
 747         if( wParam & MDITILE_HORIZONTAL )  /* version >= 3.1 */
 748         {
 749             i = rows;
 750             rows = columns;  /* exchange r and c */
 751             columns = i;
 752         }
 753
 754         if (has_icons)
 755         {
 756             y = rect.bottom - 2 * GetSystemMetrics(SM_CYICONSPACING) - GetSystemMetrics(SM_CYICON);
 757             rect.bottom = ( y - GetSystemMetrics(SM_CYICON) < rect.top )? rect.bottom: y;
 758         }
 759
 760         ysize   = rect.bottom / rows;
 761         xsize   = rect.right  / columns;
 762
 763         for (x = i = 0, c = 1; c <= columns && *pWnd; c++)
 764         {
 765             if (c == columns)
 766             {
 767                 rows  = total - i;
 768                 ysize = rect.bottom / rows;
 769             }
 770
 771             y = 0;
 772             for (r = 1; r <= rows && *pWnd; r++, i++)
 773             {
 774                 SetWindowPos(*pWnd, 0, x, y, xsize, ysize,
 775                              SWP_DRAWFRAME | SWP_NOACTIVATE | SWP_NOZORDER);
 776                 y += ysize;
 777                 pWnd++;
 778             }
 779             x += xsize;
 780         }
 781     }
 782     HeapFree( GetProcessHeap(), 0, win_array );
 783     if (has_icons) ArrangeIconicWindows( client );
 784 }
 785
 786 /* ----------------------- Frame window ---------------------------- */
 787
 788
 789 /**********************************************************************
 790  *                                      MDI_AugmentFrameMenu
 791  */
 792 static BOOL MDI_AugmentFrameMenu( HWND frame, HWND hChild )
 793 {
 794     HMENU menu = GetMenu( frame );
 795     HMENU       hSysPopup = 0;
 796     HBITMAP hSysMenuBitmap = 0;
 797     INT nItems;
 798     UINT iId;
 799     HICON hIcon;
 800
 801     TRACE("frame %p,child %p\n",frame,hChild);
 802
 803     if( !menu ) return 0;
 804
 805     /* if the system buttons already exist do not add them again */
 806     nItems = GetMenuItemCount(menu) - 1;
 807     iId = GetMenuItemID(menu,nItems) ;
 808     if (iId == SC_RESTORE || iId == SC_CLOSE)
 809         return 0;
 810
 811     /* create a copy of sysmenu popup and insert it into frame menu bar */
 812     if (!(hSysPopup = GetSystemMenu(hChild, FALSE)))
 813         return 0;
 814
 815     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 816                    SC_MINIMIZE, (LPSTR)(DWORD)HBMMENU_MBAR_MINIMIZE ) ;
 817     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 818                    SC_RESTORE, (LPSTR)(DWORD)HBMMENU_MBAR_RESTORE );
 819
 820     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 821                    SC_CLOSE, (LPSTR)(DWORD)HBMMENU_MBAR_CLOSE );
 822
 823     /* The system menu is replaced by the child icon */
 824     hIcon = (HICON)GetClassLongW(hChild, GCL_HICONSM);
 825     if (!hIcon)
 826         hIcon = (HICON)GetClassLongW(hChild, GCL_HICON);
 827     if (!hIcon)
 828         hIcon = LoadImageW(0, MAKEINTRESOURCEW(IDI_WINLOGO), IMAGE_ICON, 0, 0, LR_DEFAULTCOLOR);
 829     if (hIcon)
 830     {
 831       HDC hMemDC;
 832       HBITMAP hBitmap, hOldBitmap;
 833       HBRUSH hBrush;
 834       HDC hdc = GetDC(hChild);
 835
 836       if (hdc)
 837       {
 838         int cx, cy;
 839         cx = GetSystemMetrics(SM_CXSMICON);
 840         cy = GetSystemMetrics(SM_CYSMICON);
 841         hMemDC = CreateCompatibleDC(hdc);
 842         hBitmap = CreateCompatibleBitmap(hdc, cx, cy);
 843         hOldBitmap = SelectObject(hMemDC, hBitmap);
 844         SetMapMode(hMemDC, MM_TEXT);
 845         hBrush = CreateSolidBrush(GetSysColor(COLOR_MENU));
 846         DrawIconEx(hMemDC, 0, 0, hIcon, cx, cy, 0, hBrush, DI_NORMAL);
 847         SelectObject (hMemDC, hOldBitmap);
 848         DeleteObject(hBrush);
 849         DeleteDC(hMemDC);
 850         ReleaseDC(hChild, hdc);
 851         hSysMenuBitmap = hBitmap;
 852       }
 853     }
 854
 855     if( !InsertMenuA(menu,0,MF_BYPOSITION | MF_BITMAP | MF_POPUP,
 856                      (UINT_PTR)hSysPopup, (LPSTR)hSysMenuBitmap))
 857     {
 858         TRACE("not inserted\n");
 859         DestroyMenu(hSysPopup);
 860         return 0;
 861     }
 862
 863     EnableMenuItem(hSysPopup, SC_SIZE, MF_BYCOMMAND | MF_GRAYED);
 864     EnableMenuItem(hSysPopup, SC_MOVE, MF_BYCOMMAND | MF_GRAYED);
 865     EnableMenuItem(hSysPopup, SC_MAXIMIZE, MF_BYCOMMAND | MF_GRAYED);
 866     SetMenuDefaultItem(hSysPopup, SC_CLOSE, FALSE);
 867
 868     /* redraw menu */
 869     DrawMenuBar(frame);
 870
 871     return 1;
 872 }
 873
 874 /**********************************************************************
 875  *                                      MDI_RestoreFrameMenu
 876  */
 877 static BOOL MDI_RestoreFrameMenu( HWND frame, HWND hChild )
 878 {
 879     MENUITEMINFOW menuInfo;
 880     HMENU menu = GetMenu( frame );
 881     INT nItems = GetMenuItemCount(menu) - 1;
 882     UINT iId = GetMenuItemID(menu,nItems) ;
 883
 884     TRACE("frame %p,child %p,nIt=%d,iId=%d\n",frame,hChild,nItems,iId);
 885
 886     /* if there is no system buttons then nothing to do */
 887     if(!(iId == SC_RESTORE || iId == SC_CLOSE) )
 888         return 0;
 889
 890     /*
 891      * Remove the system menu, If that menu is the icon of the window
 892      * as it is in win95, we have to delete the bitmap.
 893      */
 894     memset(&menuInfo, 0, sizeof(menuInfo));
 895     menuInfo.cbSize = sizeof(menuInfo);
 896     menuInfo.fMask  = MIIM_DATA | MIIM_TYPE;
 897
 898     GetMenuItemInfoW(menu,
 899                      0,
 900                      TRUE,
 901                      &menuInfo);
 902
 903     RemoveMenu(menu,0,MF_BYPOSITION);
 904
 905     if ( (menuInfo.fType & MFT_BITMAP)           &&
 906          (LOWORD(menuInfo.dwTypeData)!=0)        &&
 907          (LOWORD(menuInfo.dwTypeData)!=HBITMAP_16(hBmpClose)) )
 908     {
 909         DeleteObject(HBITMAP_32(LOWORD(menuInfo.dwTypeData)));
 910     }
 911
 912     /* close */
 913     DeleteMenu(menu, SC_CLOSE, MF_BYCOMMAND);
 914     /* restore */
 915     DeleteMenu(menu, SC_RESTORE, MF_BYCOMMAND);
 916     /* minimize */
 917     DeleteMenu(menu, SC_MINIMIZE, MF_BYCOMMAND);
 918
 919     DrawMenuBar(frame);
 920
 921     return 1;
 922 }
 923
 924
 925 /**********************************************************************
 926  *                                      MDI_UpdateFrameText
 927  *
 928  * used when child window is maximized/restored
 929  *
 930  * Note: lpTitle can be NULL
 931  */
 932 static void MDI_UpdateFrameText( HWND frame, HWND hClient, LPCWSTR lpTitle )
 933 {
 934     WCHAR   lpBuffer[MDI_MAXTITLELENGTH+1];
 935     MDICLIENTINFO *ci = get_client_info( hClient );
 936
 937     TRACE("frameText %s\n", debugstr_w(lpTitle));
 938
 939     if (!ci) return;
 940
 941     if (!lpTitle && !ci->frameTitle)  /* first time around, get title from the frame window */
 942     {
 943         GetWindowTextW( frame, lpBuffer, sizeof(lpBuffer)/sizeof(WCHAR) );
 944         lpTitle = lpBuffer;
 945     }
 946
 947     /* store new "default" title if lpTitle is not NULL */
 948     if (lpTitle)
 949     {
 950         if (ci->frameTitle) HeapFree( GetProcessHeap(), 0, ci->frameTitle );
 951         if ((ci->frameTitle = HeapAlloc( GetProcessHeap(), 0, (strlenW(lpTitle)+1)*sizeof(WCHAR))))
 952             strcpyW( ci->frameTitle, lpTitle );
 953     }
 954
 955     if (ci->frameTitle)
 956     {
 957         if (IsZoomed(ci->hwndActiveChild) && IsWindowVisible(ci->hwndActiveChild))
 958         {
 959             /* combine frame title and child title if possible */
 960
 961             static const WCHAR lpBracket[]  = {' ','-',' ','[',0};
 962             static const WCHAR lpBracket2[]  = {']',0};
 963             int i_frame_text_length = strlenW(ci->frameTitle);
 964
 965             lstrcpynW( lpBuffer, ci->frameTitle, MDI_MAXTITLELENGTH);
 966
 967             if( i_frame_text_length + 6 < MDI_MAXTITLELENGTH )
 968             {
 969                 strcatW( lpBuffer, lpBracket );
 970                 if (GetWindowTextW( ci->hwndActiveChild, lpBuffer + i_frame_text_length + 4,
 971                                     MDI_MAXTITLELENGTH - i_frame_text_length - 5 ))
 972                     strcatW( lpBuffer, lpBracket2 );
 973                 else
 974                     lpBuffer[i_frame_text_length] = 0;  /* remove bracket */
 975             }
 976         }
 977         else
 978         {
 979             lstrcpynW(lpBuffer, ci->frameTitle, MDI_MAXTITLELENGTH+1 );
 980         }
 981     }
 982     else
 983         lpBuffer[0] = '\0';
 984
 985     DefWindowProcW( frame, WM_SETTEXT, 0, (LPARAM)lpBuffer );
 986 }
 987
 988
 989 /* ----------------------------- Interface ---------------------------- */
 990
 991
 992 /**********************************************************************
 993  *              MDIClientWndProc_common
 994  */
 995 static LRESULT MDIClientWndProc_common( HWND hwnd, UINT message,
 996                                         WPARAM wParam, LPARAM lParam, BOOL unicode )
 997 {
 998     MDICLIENTINFO *ci;
 999
1000     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1001
1002     if (!(ci = get_client_info( hwnd ))) return 0;
1003
1004     switch (message)
1005     {
1006       case WM_CREATE:
1007       {
1008           /* Since we are using only cs->lpCreateParams, we can safely
1009            * cast to LPCREATESTRUCTA here */
1010           LPCREATESTRUCTA cs = (LPCREATESTRUCTA)lParam;
1011           WND *wndPtr = WIN_GetPtr( hwnd );
1012
1013           wndPtr->flags |= WIN_ISMDICLIENT;
1014
1015         /* Translation layer doesn't know what's in the cs->lpCreateParams
1016          * so we have to keep track of what environment we're in. */
1017
1018         if( wndPtr->flags & WIN_ISWIN32 )
1019         {
1020             LPCLIENTCREATESTRUCT ccs = cs->lpCreateParams;
1021             ci->hWindowMenu     = ccs->hWindowMenu;
1022             ci->idFirstChild    = ccs->idFirstChild;
1023         }
1024         else
1025         {
1026             LPCLIENTCREATESTRUCT16 ccs = MapSL((SEGPTR)cs->lpCreateParams);
1027             ci->hWindowMenu     = HMENU_32(ccs->hWindowMenu);
1028             ci->idFirstChild    = ccs->idFirstChild;
1029         }
1030         WIN_ReleasePtr( wndPtr );
1031
1032         ci->child = NULL;
1033         ci->nActiveChildren     = 0;
1034         ci->nTotalCreated       = 0;
1035         ci->frameTitle          = NULL;
1036         ci->mdiFlags            = 0;
1037         ci->hFrameMenu = GetMenu(cs->hwndParent);
1038
1039         if (!hBmpClose) hBmpClose = CreateMDIMenuBitmap();
1040
1041         TRACE("Client created - hwnd = %p, idFirst = %u\n", hwnd, ci->idFirstChild );
1042         return 0;
1043       }
1044
1045       case WM_DESTROY:
1046       {
1047           if( IsZoomed(ci->hwndActiveChild) )
1048               MDI_RestoreFrameMenu(GetParent(hwnd), ci->hwndActiveChild);
1049
1050           ci->nActiveChildren = 0;
1051           MDI_RefreshMenu(ci);
1052
1053           if (ci->child) HeapFree( GetProcessHeap(), 0, ci->child );
1054           if (ci->frameTitle) HeapFree( GetProcessHeap(), 0, ci->frameTitle );
1055
1056           return 0;
1057       }
1058
1059       case WM_MDIACTIVATE:
1060       {
1061         if( ci->hwndActiveChild != (HWND)wParam )
1062             SetWindowPos((HWND)wParam, 0,0,0,0,0, SWP_NOSIZE | SWP_NOMOVE);
1063         return 0;
1064       }
1065
1066       case WM_MDICASCADE:
1067         return MDICascade(hwnd, ci);
1068
1069       case WM_MDICREATE:
1070         if (lParam)
1071         {
1072             if (unicode)
1073             {
1074                 MDICREATESTRUCTW *csW = (MDICREATESTRUCTW *)lParam;
1075                 return (LRESULT)CreateWindowExW(WS_EX_MDICHILD, csW->szClass,
1076                                             csW->szTitle, csW->style,
1077                                             csW->x, csW->y, csW->cx, csW->cy,
1078                                             hwnd, 0, csW->hOwner,
1079                                             (LPVOID)csW->lParam);
1080             }
1081             else
1082             {
1083                 MDICREATESTRUCTA *csA = (MDICREATESTRUCTA *)lParam;
1084                 return (LRESULT)CreateWindowExA(WS_EX_MDICHILD, csA->szClass,
1085                                             csA->szTitle, csA->style,
1086                                             csA->x, csA->y, csA->cx, csA->cy,
1087                                             hwnd, 0, csA->hOwner,
1088                                             (LPVOID)csA->lParam);
1089             }
1090         }
1091         return 0;
1092
1093       case WM_MDIDESTROY:
1094           return MDIDestroyChild( hwnd, ci, WIN_GetFullHandle( (HWND)wParam ), TRUE );
1095
1096       case WM_MDIGETACTIVE:
1097           if (lParam) *(BOOL *)lParam = IsZoomed(ci->hwndActiveChild);
1098           return (LRESULT)ci->hwndActiveChild;
1099
1100       case WM_MDIICONARRANGE:
1101         ci->mdiFlags |= MDIF_NEEDUPDATE;
1102         ArrangeIconicWindows( hwnd );
1103         ci->sbRecalc = SB_BOTH+1;
1104         SendMessageW( hwnd, WM_MDICALCCHILDSCROLL, 0, 0 );
1105         return 0;
1106
1107       case WM_MDIMAXIMIZE:
1108         ShowWindow( (HWND)wParam, SW_MAXIMIZE );
1109         return 0;
1110
1111       case WM_MDINEXT: /* lParam != 0 means previous window */
1112         MDI_SwitchActiveChild( hwnd, WIN_GetFullHandle( (HWND)wParam ), !lParam );
1113         break;
1114
1115       case WM_MDIRESTORE:
1116         SendMessageW( (HWND)wParam, WM_SYSCOMMAND, SC_RESTORE, 0);
1117         return 0;
1118
1119       case WM_MDISETMENU:
1120           return MDISetMenu( hwnd, (HMENU)wParam, (HMENU)lParam );
1121
1122       case WM_MDIREFRESHMENU:
1123           return MDI_RefreshMenu( ci );
1124
1125       case WM_MDITILE:
1126         ci->mdiFlags |= MDIF_NEEDUPDATE;
1127         ShowScrollBar( hwnd, SB_BOTH, FALSE );
1128         MDITile( hwnd, ci, wParam );
1129         ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1130         return 0;
1131
1132       case WM_VSCROLL:
1133       case WM_HSCROLL:
1134         ci->mdiFlags |= MDIF_NEEDUPDATE;
1135         ScrollChildren( hwnd, message, wParam, lParam );
1136         ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1137         return 0;
1138
1139       case WM_SETFOCUS:
1140           if (ci->hwndActiveChild && !IsIconic( ci->hwndActiveChild ))
1141               SetFocus( ci->hwndActiveChild );
1142           return 0;
1143
1144       case WM_NCACTIVATE:
1145         if( ci->hwndActiveChild )
1146             SendMessageW(ci->hwndActiveChild, message, wParam, lParam);
1147         break;
1148
1149       case WM_PARENTNOTIFY:
1150         switch (LOWORD(wParam))
1151         {
1152         case WM_CREATE:
1153             if (GetWindowLongW((HWND)lParam, GWL_EXSTYLE) & WS_EX_MDICHILD)
1154             {
1155                 ci->nTotalCreated++;
1156                 ci->nActiveChildren++;
1157
1158                 if (!ci->child)
1159                     ci->child = HeapAlloc(GetProcessHeap(), 0, sizeof(HWND));
1160                 else
1161                     ci->child = HeapReAlloc(GetProcessHeap(), 0, ci->child, sizeof(HWND) * ci->nActiveChildren);
1162
1163                 TRACE("Adding MDI child %p, # of children %d\n",
1164                       (HWND)lParam, ci->nActiveChildren);
1165
1166                 ci->child[ci->nActiveChildren - 1] = (HWND)lParam;
1167             }
1168             break;
1169
1170         case WM_LBUTTONDOWN:
1171             {
1172             HWND child;
1173             POINT pt;
1174             pt.x = (short)LOWORD(lParam);
1175             pt.y = (short)HIWORD(lParam);
1176             child = ChildWindowFromPoint(hwnd, pt);
1177
1178             TRACE("notification from %p (%li,%li)\n",child,pt.x,pt.y);
1179
1180             if( child && child != hwnd && child != ci->hwndActiveChild )
1181                 SetWindowPos(child, 0,0,0,0,0, SWP_NOSIZE | SWP_NOMOVE );
1182             break;
1183             }
1184         }
1185         return 0;
1186
1187       case WM_SIZE:
1188         if( IsWindow(ci->hwndActiveChild) && IsZoomed(ci->hwndActiveChild) &&
1189             IsWindowVisible(ci->hwndActiveChild) )
1190         {
1191             RECT        rect;
1192
1193             rect.left = 0;
1194             rect.top = 0;
1195             rect.right = LOWORD(lParam);
1196             rect.bottom = HIWORD(lParam);
1197
1198             AdjustWindowRectEx(&rect, GetWindowLongA(ci->hwndActiveChild, GWL_STYLE),
1199                                0, GetWindowLongA(ci->hwndActiveChild, GWL_EXSTYLE) );
1200             MoveWindow(ci->hwndActiveChild, rect.left, rect.top,
1201                          rect.right - rect.left, rect.bottom - rect.top, 1);
1202         }
1203         else
1204             MDI_PostUpdate(hwnd, ci, SB_BOTH+1);
1205
1206         break;
1207
1208       case WM_MDICALCCHILDSCROLL:
1209         if( (ci->mdiFlags & MDIF_NEEDUPDATE) && ci->sbRecalc )
1210         {
1211             CalcChildScroll(hwnd, ci->sbRecalc-1);
1212             ci->sbRecalc = 0;
1213             ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1214         }
1215         return 0;
1216     }
1217     return unicode ? DefWindowProcW( hwnd, message, wParam, lParam ) :
1218                      DefWindowProcA( hwnd, message, wParam, lParam );
1219 }
1220
1221 /***********************************************************************
1222  *              MDIClientWndProcA
1223  */
1224 static LRESULT WINAPI MDIClientWndProcA( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
1225 {
1226     if (!IsWindow(hwnd)) return 0;
1227     return MDIClientWndProc_common( hwnd, message, wParam, lParam, FALSE );
1228 }
1229
1230 /***********************************************************************
1231  *              MDIClientWndProcW
1232  */
1233 static LRESULT WINAPI MDIClientWndProcW( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
1234 {
1235     if (!IsWindow(hwnd)) return 0;
1236     return MDIClientWndProc_common( hwnd, message, wParam, lParam, TRUE );
1237 }
1238
1239 /***********************************************************************
1240  *              DefFrameProcA (USER32.@)
1241  */
1242 LRESULT WINAPI DefFrameProcA( HWND hwnd, HWND hwndMDIClient,
1243                                 UINT message, WPARAM wParam, LPARAM lParam)
1244 {
1245     if (hwndMDIClient)
1246     {
1247         switch (message)
1248         {
1249         case WM_SETTEXT:
1250             {
1251                 DWORD len = MultiByteToWideChar( CP_ACP, 0, (LPSTR)lParam, -1, NULL, 0 );
1252                 LPWSTR text = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1253                 MultiByteToWideChar( CP_ACP, 0, (LPSTR)lParam, -1, text, len );
1254                 MDI_UpdateFrameText( hwnd, hwndMDIClient, text );
1255                 HeapFree( GetProcessHeap(), 0, text );
1256             }
1257             return 1; /* success. FIXME: check text length */
1258
1259         case WM_COMMAND:
1260         case WM_NCACTIVATE:
1261         case WM_NEXTMENU:
1262         case WM_SETFOCUS:
1263         case WM_SIZE:
1264             return DefFrameProcW( hwnd, hwndMDIClient, message, wParam, lParam );
1265         }
1266     }
1267     return DefWindowProcA(hwnd, message, wParam, lParam);
1268 }
1269
1270
1271 /***********************************************************************
1272  *              DefFrameProcW (USER32.@)
1273  */
1274 LRESULT WINAPI DefFrameProcW( HWND hwnd, HWND hwndMDIClient,
1275                                 UINT message, WPARAM wParam, LPARAM lParam)
1276 {
1277     MDICLIENTINFO *ci = get_client_info( hwndMDIClient );
1278
1279     TRACE("%p %p %04x (%s) %08x %08lx\n", hwnd, hwndMDIClient, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1280
1281     if (ci)
1282     {
1283         switch (message)
1284         {
1285         case WM_COMMAND:
1286             {
1287                 WORD id = LOWORD(wParam);
1288                 /* check for possible syscommands for maximized MDI child */
1289                 if (id <  ci->idFirstChild || id >= ci->idFirstChild + ci->nActiveChildren)
1290                 {
1291                     if( (id - 0xf000) & 0xf00f ) break;
1292                     if( !IsZoomed(ci->hwndActiveChild) ) break;
1293                     switch( id )
1294                     {
1295                     case SC_SIZE:
1296                     case SC_MOVE:
1297                     case SC_MINIMIZE:
1298                     case SC_MAXIMIZE:
1299                     case SC_NEXTWINDOW:
1300                     case SC_PREVWINDOW:
1301                     case SC_CLOSE:
1302                     case SC_RESTORE:
1303                         return SendMessageW( ci->hwndActiveChild, WM_SYSCOMMAND,
1304                                              wParam, lParam);
1305                     }
1306                 }
1307                 else
1308                 {
1309                     HWND childHwnd;
1310                     if (id - ci->idFirstChild == MDI_MOREWINDOWSLIMIT)
1311                         /* User chose "More Windows..." */
1312                         childHwnd = MDI_MoreWindowsDialog(hwndMDIClient);
1313                     else
1314                         /* User chose one of the windows listed in the "Windows" menu */
1315                         childHwnd = MDI_GetChildByID(hwndMDIClient, id, ci);
1316
1317                     if( childHwnd )
1318                         SendMessageW( hwndMDIClient, WM_MDIACTIVATE, (WPARAM)childHwnd, 0 );
1319                 }
1320             }
1321             break;
1322
1323         case WM_NCACTIVATE:
1324             SendMessageW(hwndMDIClient, message, wParam, lParam);
1325             break;
1326
1327         case WM_SETTEXT:
1328             MDI_UpdateFrameText( hwnd, hwndMDIClient, (LPWSTR)lParam );
1329             return 1; /* success. FIXME: check text length */
1330
1331         case WM_SETFOCUS:
1332             SetFocus(hwndMDIClient);
1333             break;
1334
1335         case WM_SIZE:
1336             MoveWindow(hwndMDIClient, 0, 0, LOWORD(lParam), HIWORD(lParam), TRUE);
1337             break;
1338
1339         case WM_NEXTMENU:
1340             {
1341                 MDINEXTMENU *next_menu = (MDINEXTMENU *)lParam;
1342
1343                 if (!IsIconic(hwnd) && ci->hwndActiveChild && !IsZoomed(ci->hwndActiveChild))
1344                 {
1345                     /* control menu is between the frame system menu and
1346                      * the first entry of menu bar */
1347                     WND *wndPtr = WIN_GetPtr(hwnd);
1348
1349                     if( (wParam == VK_LEFT && GetMenu(hwnd) == next_menu->hmenuIn) ||
1350                         (wParam == VK_RIGHT && GetSubMenu(wndPtr->hSysMenu, 0) == next_menu->hmenuIn) )
1351                     {
1352                         WIN_ReleasePtr(wndPtr);
1353                         wndPtr = WIN_GetPtr(ci->hwndActiveChild);
1354                         next_menu->hmenuNext = GetSubMenu(wndPtr->hSysMenu, 0);
1355                         next_menu->hwndNext = ci->hwndActiveChild;
1356                     }
1357                     WIN_ReleasePtr(wndPtr);
1358                 }
1359                 return 0;
1360             }
1361         }
1362     }
1363
1364     return DefWindowProcW( hwnd, message, wParam, lParam );
1365 }
1366
1367 /***********************************************************************
1368  *              DefMDIChildProcA (USER32.@)
1369  */
1370 LRESULT WINAPI DefMDIChildProcA( HWND hwnd, UINT message,
1371                                    WPARAM wParam, LPARAM lParam )
1372 {
1373     HWND client = GetParent(hwnd);
1374     MDICLIENTINFO *ci = get_client_info( client );
1375
1376     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1377
1378     hwnd = WIN_GetFullHandle( hwnd );
1379     if (!ci) return DefWindowProcA( hwnd, message, wParam, lParam );
1380
1381     switch (message)
1382     {
1383     case WM_SETTEXT:
1384         DefWindowProcA(hwnd, message, wParam, lParam);
1385         if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild) )
1386             MDI_UpdateFrameText( GetParent(client), client, NULL );
1387         return 1; /* success. FIXME: check text length */
1388
1389     case WM_GETMINMAXINFO:
1390     case WM_MENUCHAR:
1391     case WM_CLOSE:
1392     case WM_SETFOCUS:
1393     case WM_CHILDACTIVATE:
1394     case WM_SYSCOMMAND:
1395     case WM_SHOWWINDOW:
1396     case WM_SETVISIBLE:
1397     case WM_SIZE:
1398     case WM_NEXTMENU:
1399     case WM_SYSCHAR:
1400         return DefMDIChildProcW( hwnd, message, wParam, lParam );
1401     }
1402     return DefWindowProcA(hwnd, message, wParam, lParam);
1403 }
1404
1405
1406 /***********************************************************************
1407  *              DefMDIChildProcW (USER32.@)
1408  */
1409 LRESULT WINAPI DefMDIChildProcW( HWND hwnd, UINT message,
1410                                    WPARAM wParam, LPARAM lParam )
1411 {
1412     HWND client = GetParent(hwnd);
1413     MDICLIENTINFO *ci = get_client_info( client );
1414
1415     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1416
1417     hwnd = WIN_GetFullHandle( hwnd );
1418     if (!ci) return DefWindowProcW( hwnd, message, wParam, lParam );
1419
1420     switch (message)
1421     {
1422     case WM_SETTEXT:
1423         DefWindowProcW(hwnd, message, wParam, lParam);
1424         if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild) )
1425             MDI_UpdateFrameText( GetParent(client), client, NULL );
1426         return 1; /* success. FIXME: check text length */
1427
1428     case WM_GETMINMAXINFO:
1429         MDI_ChildGetMinMaxInfo( client, hwnd, (MINMAXINFO *)lParam );
1430         return 0;
1431
1432     case WM_MENUCHAR:
1433         return 0x00010000; /* MDI children don't have menu bars */
1434
1435     case WM_CLOSE:
1436         SendMessageW( client, WM_MDIDESTROY, (WPARAM)hwnd, 0 );
1437         return 0;
1438
1439     case WM_CHILDACTIVATE:
1440         MDI_ChildActivate( client, hwnd );
1441         return 0;
1442
1443     case WM_SYSCOMMAND:
1444         switch( wParam )
1445         {
1446         case SC_MOVE:
1447             if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild))
1448                 return 0;
1449             break;
1450         case SC_RESTORE:
1451         case SC_MINIMIZE:
1452             break;
1453         case SC_MAXIMIZE:
1454             if (ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild))
1455                 return SendMessageW( GetParent(client), message, wParam, lParam);
1456             break;
1457         case SC_NEXTWINDOW:
1458             SendMessageW( client, WM_MDINEXT, 0, 0);
1459             return 0;
1460         case SC_PREVWINDOW:
1461             SendMessageW( client, WM_MDINEXT, 0, 1);
1462             return 0;
1463         }
1464         break;
1465
1466     case WM_SHOWWINDOW:
1467     case WM_SETVISIBLE:
1468         if (IsZoomed(ci->hwndActiveChild)) ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1469         else MDI_PostUpdate(client, ci, SB_BOTH+1);
1470         break;
1471
1472     case WM_SIZE:
1473         if (wParam == SIZE_MAXIMIZED && !IsWindowVisible(hwnd))
1474             wParam = SIZE_RESTORED;
1475
1476         if( hwnd == ci->hwndActiveChild && wParam != SIZE_MAXIMIZED )
1477         {
1478             MDI_RestoreFrameMenu( GetParent(client), hwnd );
1479             MDI_UpdateFrameText( GetParent(client), client, NULL );
1480         }
1481
1482         if( wParam == SIZE_MAXIMIZED )
1483         {
1484             TRACE("maximizing child %p\n", hwnd );
1485
1486             MDI_AugmentFrameMenu( GetParent(client), hwnd );
1487             MDI_UpdateFrameText( GetParent(client), client, NULL );
1488         }
1489
1490         if( wParam == SIZE_MINIMIZED )
1491         {
1492             HWND switchTo = MDI_GetWindow(ci, hwnd, TRUE, WS_MINIMIZE);
1493
1494             if (switchTo) SendMessageW( switchTo, WM_CHILDACTIVATE, 0, 0);
1495         }
1496         MDI_PostUpdate(client, ci, SB_BOTH+1);
1497         break;
1498
1499     case WM_NEXTMENU:
1500         {
1501             MDINEXTMENU *next_menu = (MDINEXTMENU *)lParam;
1502             HWND parent = GetParent(client);
1503
1504             if( wParam == VK_LEFT )  /* switch to frame system menu */
1505             {
1506                 WND *wndPtr = WIN_GetPtr( parent );
1507                 next_menu->hmenuNext = GetSubMenu( wndPtr->hSysMenu, 0 );
1508                 WIN_ReleasePtr( wndPtr );
1509             }
1510             if( wParam == VK_RIGHT )  /* to frame menu bar */
1511             {
1512                 next_menu->hmenuNext = GetMenu(parent);
1513             }
1514             next_menu->hwndNext = parent;
1515             return 0;
1516         }
1517
1518     case WM_SYSCHAR:
1519         if (wParam == '-')
1520         {
1521             SendMessageW( hwnd, WM_SYSCOMMAND, (WPARAM)SC_KEYMENU, (DWORD)VK_SPACE);
1522             return 0;
1523         }
1524         break;
1525     }
1526     return DefWindowProcW(hwnd, message, wParam, lParam);
1527 }
1528
1529 /**********************************************************************
1530  *              CreateMDIWindowA (USER32.@) Creates a MDI child
1531  *
1532  * RETURNS
1533  *    Success: Handle to created window
1534  *    Failure: NULL
1535  */
1536 HWND WINAPI CreateMDIWindowA(
1537     LPCSTR lpClassName,    /* [in] Pointer to registered child class name */
1538     LPCSTR lpWindowName,   /* [in] Pointer to window name */
1539     DWORD dwStyle,         /* [in] Window style */
1540     INT X,               /* [in] Horizontal position of window */
1541     INT Y,               /* [in] Vertical position of window */
1542     INT nWidth,          /* [in] Width of window */
1543     INT nHeight,         /* [in] Height of window */
1544     HWND hWndParent,     /* [in] Handle to parent window */
1545     HINSTANCE hInstance, /* [in] Handle to application instance */
1546     LPARAM lParam)         /* [in] Application-defined value */
1547 {
1548     TRACE("(%s,%s,%08lx,%d,%d,%d,%d,%p,%p,%08lx)\n",
1549           debugstr_a(lpClassName),debugstr_a(lpWindowName),dwStyle,X,Y,
1550           nWidth,nHeight,hWndParent,hInstance,lParam);
1551
1552     return CreateWindowExA(WS_EX_MDICHILD, lpClassName, lpWindowName,
1553                            dwStyle, X, Y, nWidth, nHeight, hWndParent,
1554                            0, hInstance, (LPVOID)lParam);
1555 }
1556
1557 /***********************************************************************
1558  *              CreateMDIWindowW (USER32.@) Creates a MDI child
1559  *
1560  * RETURNS
1561  *    Success: Handle to created window
1562  *    Failure: NULL
1563  */
1564 HWND WINAPI CreateMDIWindowW(
1565     LPCWSTR lpClassName,    /* [in] Pointer to registered child class name */
1566     LPCWSTR lpWindowName,   /* [in] Pointer to window name */
1567     DWORD dwStyle,         /* [in] Window style */
1568     INT X,               /* [in] Horizontal position of window */
1569     INT Y,               /* [in] Vertical position of window */
1570     INT nWidth,          /* [in] Width of window */
1571     INT nHeight,         /* [in] Height of window */
1572     HWND hWndParent,     /* [in] Handle to parent window */
1573     HINSTANCE hInstance, /* [in] Handle to application instance */
1574     LPARAM lParam)         /* [in] Application-defined value */
1575 {
1576     TRACE("(%s,%s,%08lx,%d,%d,%d,%d,%p,%p,%08lx)\n",
1577           debugstr_w(lpClassName), debugstr_w(lpWindowName), dwStyle, X, Y,
1578           nWidth, nHeight, hWndParent, hInstance, lParam);
1579
1580     return CreateWindowExW(WS_EX_MDICHILD, lpClassName, lpWindowName,
1581                            dwStyle, X, Y, nWidth, nHeight, hWndParent,
1582                            0, hInstance, (LPVOID)lParam);
1583 }
1584
1585 /**********************************************************************
1586  *              TranslateMDISysAccel (USER32.@)
1587  */
1588 BOOL WINAPI TranslateMDISysAccel( HWND hwndClient, LPMSG msg )
1589 {
1590     if (msg->message == WM_KEYDOWN || msg->message == WM_SYSKEYDOWN)
1591     {
1592         MDICLIENTINFO *ci = get_client_info( hwndClient );
1593         WPARAM wParam = 0;
1594
1595         if (!ci || !IsWindowEnabled(ci->hwndActiveChild)) return 0;
1596
1597         /* translate if the Ctrl key is down and Alt not. */
1598
1599         if( (GetKeyState(VK_CONTROL) & 0x8000) && !(GetKeyState(VK_MENU) & 0x8000))
1600         {
1601             switch( msg->wParam )
1602             {
1603             case VK_F6:
1604             case VK_TAB:
1605                 wParam = ( GetKeyState(VK_SHIFT) & 0x8000 ) ? SC_NEXTWINDOW : SC_PREVWINDOW;
1606                 break;
1607             case VK_F4:
1608             case VK_RBUTTON:
1609                 wParam = SC_CLOSE;
1610                 break;
1611             default:
1612                 return 0;
1613             }
1614             TRACE("wParam = %04x\n", wParam);
1615             SendMessageW(ci->hwndActiveChild, WM_SYSCOMMAND, wParam, (LPARAM)msg->wParam);
1616             return 1;
1617         }
1618     }
1619     return 0; /* failure */
1620 }
1621
1622 /***********************************************************************
1623  *              CalcChildScroll (USER32.@)
1624  */
1625 void WINAPI CalcChildScroll( HWND hwnd, INT scroll )
1626 {
1627     SCROLLINFO info;
1628     RECT childRect, clientRect;
1629     HWND *list;
1630
1631     GetClientRect( hwnd, &clientRect );
1632     SetRectEmpty( &childRect );
1633
1634     if ((list = WIN_ListChildren( hwnd )))
1635     {
1636         int i;
1637         for (i = 0; list[i]; i++)
1638         {
1639             DWORD style = GetWindowLongW( list[i], GWL_STYLE );
1640             if (style & WS_MAXIMIZE)
1641             {
1642                 HeapFree( GetProcessHeap(), 0, list );
1643                 ShowScrollBar( hwnd, SB_BOTH, FALSE );
1644                 return;
1645             }
1646             if (style & WS_VISIBLE)
1647             {
1648                 WND *pWnd = WIN_FindWndPtr( list[i] );
1649                 UnionRect( &childRect, &pWnd->rectWindow, &childRect );
1650                 WIN_ReleaseWndPtr( pWnd );
1651             }
1652         }
1653         HeapFree( GetProcessHeap(), 0, list );
1654     }
1655     UnionRect( &childRect, &clientRect, &childRect );
1656
1657     /* set common info values */
1658     info.cbSize = sizeof(info);
1659     info.fMask = SIF_POS | SIF_RANGE;
1660
1661     /* set the specific */
1662     switch( scroll )
1663     {
1664         case SB_BOTH:
1665         case SB_HORZ:
1666                         info.nMin = childRect.left;
1667                         info.nMax = childRect.right - clientRect.right;
1668                         info.nPos = clientRect.left - childRect.left;
1669                         SetScrollInfo(hwnd, scroll, &info, TRUE);
1670                         if (scroll == SB_HORZ) break;
1671                         /* fall through */
1672         case SB_VERT:
1673                         info.nMin = childRect.top;
1674                         info.nMax = childRect.bottom - clientRect.bottom;
1675                         info.nPos = clientRect.top - childRect.top;
1676                         SetScrollInfo(hwnd, scroll, &info, TRUE);
1677                         break;
1678     }
1679 }
1680
1681
1682 /***********************************************************************
1683  *              ScrollChildren (USER32.@)
1684  */
1685 void WINAPI ScrollChildren(HWND hWnd, UINT uMsg, WPARAM wParam,
1686                              LPARAM lParam)
1687 {
1688     INT newPos = -1;
1689     INT curPos, length, minPos, maxPos, shift;
1690     RECT rect;
1691
1692     GetClientRect( hWnd, &rect );
1693
1694     switch(uMsg)
1695     {
1696     case WM_HSCROLL:
1697         GetScrollRange(hWnd,SB_HORZ,&minPos,&maxPos);
1698         curPos = GetScrollPos(hWnd,SB_HORZ);
1699         length = (rect.right - rect.left) / 2;
1700         shift = GetSystemMetrics(SM_CYHSCROLL);
1701         break;
1702     case WM_VSCROLL:
1703         GetScrollRange(hWnd,SB_VERT,&minPos,&maxPos);
1704         curPos = GetScrollPos(hWnd,SB_VERT);
1705         length = (rect.bottom - rect.top) / 2;
1706         shift = GetSystemMetrics(SM_CXVSCROLL);
1707         break;
1708     default:
1709         return;
1710     }
1711
1712     switch( wParam )
1713     {
1714         case SB_LINEUP:
1715                         newPos = curPos - shift;
1716                         break;
1717         case SB_LINEDOWN:
1718                         newPos = curPos + shift;
1719                         break;
1720         case SB_PAGEUP:
1721                         newPos = curPos - length;
1722                         break;
1723         case SB_PAGEDOWN:
1724                         newPos = curPos + length;
1725                         break;
1726
1727         case SB_THUMBPOSITION:
1728                         newPos = LOWORD(lParam);
1729                         break;
1730
1731         case SB_THUMBTRACK:
1732                         return;
1733
1734         case SB_TOP:
1735                         newPos = minPos;
1736                         break;
1737         case SB_BOTTOM:
1738                         newPos = maxPos;
1739                         break;
1740         case SB_ENDSCROLL:
1741                         CalcChildScroll(hWnd,(uMsg == WM_VSCROLL)?SB_VERT:SB_HORZ);
1742                         return;
1743     }
1744
1745     if( newPos > maxPos )
1746         newPos = maxPos;
1747     else
1748         if( newPos < minPos )
1749             newPos = minPos;
1750
1751     SetScrollPos(hWnd, (uMsg == WM_VSCROLL)?SB_VERT:SB_HORZ , newPos, TRUE);
1752
1753     if( uMsg == WM_VSCROLL )
1754         ScrollWindowEx(hWnd ,0 ,curPos - newPos, NULL, NULL, 0, NULL,
1755                         SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
1756     else
1757         ScrollWindowEx(hWnd ,curPos - newPos, 0, NULL, NULL, 0, NULL,
1758                         SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
1759 }
1760
1761
1762 /******************************************************************************
1763  *              CascadeWindows (USER32.@) Cascades MDI child windows
1764  *
1765  * RETURNS
1766  *    Success: Number of cascaded windows.
1767  *    Failure: 0
1768  */
1769 WORD WINAPI
1770 CascadeWindows (HWND hwndParent, UINT wFlags, const LPRECT lpRect,
1771                 UINT cKids, const HWND *lpKids)
1772 {
1773     FIXME("(%p,0x%08x,...,%u,...): stub\n", hwndParent, wFlags, cKids);
1774     return 0;
1775 }
1776
1777
1778 /******************************************************************************
1779  *              TileWindows (USER32.@) Tiles MDI child windows
1780  *
1781  * RETURNS
1782  *    Success: Number of tiled windows.
1783  *    Failure: 0
1784  */
1785 WORD WINAPI
1786 TileWindows (HWND hwndParent, UINT wFlags, const LPRECT lpRect,
1787              UINT cKids, const HWND *lpKids)
1788 {
1789     FIXME("(%p,0x%08x,...,%u,...): stub\n", hwndParent, wFlags, cKids);
1790     return 0;
1791 }
1792
1793 /************************************************************************
1794  *              "More Windows..." functionality
1795  */
1796
1797 /*              MDI_MoreWindowsDlgProc
1798  *
1799  *    This function will process the messages sent to the "More Windows..."
1800  *    dialog.
1801  *    Return values:  0    = cancel pressed
1802  *                    HWND = ok pressed or double-click in the list...
1803  *
1804  */
1805
1806 static INT_PTR WINAPI MDI_MoreWindowsDlgProc (HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam)
1807 {
1808     switch (iMsg)
1809     {
1810        case WM_INITDIALOG:
1811        {
1812            UINT widest       = 0;
1813            UINT length;
1814            UINT i;
1815            MDICLIENTINFO *ci = get_client_info( (HWND)lParam );
1816            HWND hListBox = GetDlgItem(hDlg, MDI_IDC_LISTBOX);
1817
1818            for (i = 0; i < ci->nActiveChildren; i++)
1819            {
1820                WCHAR buffer[MDI_MAXTITLELENGTH];
1821
1822                if (!InternalGetWindowText( ci->child[i], buffer, sizeof(buffer)/sizeof(WCHAR) ))
1823                    continue;
1824                SendMessageW(hListBox, LB_ADDSTRING, 0, (LPARAM)buffer );
1825                SendMessageW(hListBox, LB_SETITEMDATA, i, (LPARAM)ci->child[i] );
1826                length = strlenW(buffer);  /* FIXME: should use GetTextExtentPoint */
1827                if (length > widest)
1828                    widest = length;
1829            }
1830            /* Make sure the horizontal scrollbar scrolls ok */
1831            SendMessageW(hListBox, LB_SETHORIZONTALEXTENT, widest * 6, 0);
1832
1833            /* Set the current selection */
1834            SendMessageW(hListBox, LB_SETCURSEL, MDI_MOREWINDOWSLIMIT, 0);
1835            return TRUE;
1836        }
1837
1838        case WM_COMMAND:
1839            switch (LOWORD(wParam))
1840            {
1841                 default:
1842                     if (HIWORD(wParam) != LBN_DBLCLK) break;
1843                     /* fall through */
1844                 case IDOK:
1845                 {
1846                     /*  windows are sorted by menu ID, so we must return the
1847                      *  window associated to the given id
1848                      */
1849                     HWND hListBox     = GetDlgItem(hDlg, MDI_IDC_LISTBOX);
1850                     UINT index        = SendMessageW(hListBox, LB_GETCURSEL, 0, 0);
1851                     LRESULT res = SendMessageW(hListBox, LB_GETITEMDATA, index, 0);
1852                     EndDialog(hDlg, res);
1853                     return TRUE;
1854                 }
1855                 case IDCANCEL:
1856                     EndDialog(hDlg, 0);
1857                     return TRUE;
1858            }
1859            break;
1860     }
1861     return FALSE;
1862 }
1863
1864 /*
1865  *
1866  *                      MDI_MoreWindowsDialog
1867  *
1868  *     Prompts the user with a listbox containing the opened
1869  *     documents. The user can then choose a windows and click
1870  *     on OK to set the current window to the one selected, or
1871  *     CANCEL to cancel. The function returns a handle to the
1872  *     selected window.
1873  */
1874
1875 static HWND MDI_MoreWindowsDialog(HWND hwnd)
1876 {
1877     LPCVOID template;
1878     HRSRC hRes;
1879     HANDLE hDlgTmpl;
1880
1881     hRes = FindResourceA(user32_module, "MDI_MOREWINDOWS", (LPSTR)RT_DIALOG);
1882
1883     if (hRes == 0)
1884         return 0;
1885
1886     hDlgTmpl = LoadResource(user32_module, hRes );
1887
1888     if (hDlgTmpl == 0)
1889         return 0;
1890
1891     template = LockResource( hDlgTmpl );
1892
1893     if (template == 0)
1894         return 0;
1895
1896     return (HWND) DialogBoxIndirectParamA(user32_module,
1897                                           (LPDLGTEMPLATEA) template,
1898                                           hwnd, MDI_MoreWindowsDlgProc, (LPARAM) hwnd);
1899 }