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 "controls.h"
  98 #include "message.h"
  99 #include "user_private.h"
 100 #include "wine/debug.h"
 101 #include "dlgs.h"
 102
 103 WINE_DEFAULT_DEBUG_CHANNEL(mdi);
 104
 105 #define MDI_MAXTITLELENGTH      0xa1
 106
 107 #define WM_MDICALCCHILDSCROLL   0x10ac /* this is exactly what Windows uses */
 108
 109 /* "More Windows..." definitions */
 110 #define MDI_MOREWINDOWSLIMIT    9       /* after this number of windows, a "More Windows..."
 111                                            option will appear under the Windows menu */
 112 #define MDI_IDC_LISTBOX         100
 113 #define IDS_MDI_MOREWINDOWS     13
 114
 115 #define MDIF_NEEDUPDATE         0x0001
 116
 117 typedef struct
 118 {
 119     UINT      nActiveChildren;
 120     HWND      hwndActiveChild;
 121     HWND      *child; /* array of tracked children */
 122     HMENU     hFrameMenu;
 123     HMENU     hWindowMenu;
 124     UINT      idFirstChild;
 125     LPWSTR    frameTitle;
 126     UINT      nTotalCreated;
 127     UINT      mdiFlags;
 128     UINT      sbRecalc;   /* SB_xxx flags for scrollbar fixup */
 129 } MDICLIENTINFO;
 130
 131 static HBITMAP hBmpClose   = 0;
 132
 133 /* ----------------- declarations ----------------- */
 134 static void MDI_UpdateFrameText( HWND, HWND, LPCWSTR);
 135 static BOOL MDI_AugmentFrameMenu( HWND, HWND );
 136 static BOOL MDI_RestoreFrameMenu( HWND, HWND );
 137 static LONG MDI_ChildActivate( HWND, HWND );
 138 static LRESULT MDI_RefreshMenu(MDICLIENTINFO *);
 139
 140 static HWND MDI_MoreWindowsDialog(HWND);
 141 static LRESULT WINAPI MDIClientWndProcA( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam );
 142 static LRESULT WINAPI MDIClientWndProcW( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam );
 143
 144 /* -------- Miscellaneous service functions ----------
 145  *
 146  *                      MDI_GetChildByID
 147  */
 148 static HWND MDI_GetChildByID(HWND hwnd, UINT id, MDICLIENTINFO *ci)
 149 {
 150     int i;
 151
 152     for (i = 0; ci->nActiveChildren; i++)
 153     {
 154         if (GetWindowLongPtrW( ci->child[i], GWLP_ID ) == id)
 155             return ci->child[i];
 156     }
 157     return 0;
 158 }
 159
 160 static void MDI_PostUpdate(HWND hwnd, MDICLIENTINFO* ci, WORD recalc)
 161 {
 162     if( !(ci->mdiFlags & MDIF_NEEDUPDATE) )
 163     {
 164         ci->mdiFlags |= MDIF_NEEDUPDATE;
 165         PostMessageA( hwnd, WM_MDICALCCHILDSCROLL, 0, 0);
 166     }
 167     ci->sbRecalc = recalc;
 168 }
 169
 170
 171 /*********************************************************************
 172  * MDIClient class descriptor
 173  */
 174 const struct builtin_class_descr MDICLIENT_builtin_class =
 175 {
 176     "MDIClient",            /* name */
 177     0,                      /* style */
 178     MDIClientWndProcA,      /* procA */
 179     MDIClientWndProcW,      /* procW */
 180     sizeof(MDICLIENTINFO),  /* extra */
 181     IDC_ARROW,              /* cursor */
 182     (HBRUSH)(COLOR_APPWORKSPACE+1)    /* brush */
 183 };
 184
 185
 186 static MDICLIENTINFO *get_client_info( HWND client )
 187 {
 188     MDICLIENTINFO *ret = NULL;
 189     WND *win = WIN_GetPtr( client );
 190     if (win)
 191     {
 192         if (win == WND_OTHER_PROCESS)
 193         {
 194             if (IsWindow(client)) ERR( "client %p belongs to other process\n", client );
 195             return NULL;
 196         }
 197         if (win->cbWndExtra < sizeof(MDICLIENTINFO)) WARN( "%p is not an MDI client\n", client );
 198         else ret = (MDICLIENTINFO *)win->wExtra;
 199         WIN_ReleasePtr( win );
 200     }
 201     return ret;
 202 }
 203
 204 /**********************************************************************
 205  *                      MDI_GetWindow
 206  *
 207  * returns "activateable" child different from the current or zero
 208  */
 209 static HWND MDI_GetWindow(MDICLIENTINFO *clientInfo, HWND hWnd, BOOL bNext,
 210                             DWORD dwStyleMask )
 211 {
 212     int i;
 213     HWND *list;
 214     HWND last = 0;
 215
 216     dwStyleMask |= WS_DISABLED | WS_VISIBLE;
 217     if( !hWnd ) hWnd = clientInfo->hwndActiveChild;
 218
 219     if (!(list = WIN_ListChildren( GetParent(hWnd) ))) return 0;
 220     i = 0;
 221     /* start from next after hWnd */
 222     while (list[i] && list[i] != hWnd) i++;
 223     if (list[i]) i++;
 224
 225     for ( ; list[i]; i++)
 226     {
 227         if (GetWindow( list[i], GW_OWNER )) continue;
 228         if ((GetWindowLongW( list[i], GWL_STYLE ) & dwStyleMask) != WS_VISIBLE) continue;
 229         last = list[i];
 230         if (bNext) goto found;
 231     }
 232     /* now restart from the beginning */
 233     for (i = 0; list[i] && list[i] != hWnd; i++)
 234     {
 235         if (GetWindow( list[i], GW_OWNER )) continue;
 236         if ((GetWindowLongW( list[i], GWL_STYLE ) & dwStyleMask) != WS_VISIBLE) continue;
 237         last = list[i];
 238         if (bNext) goto found;
 239     }
 240  found:
 241     HeapFree( GetProcessHeap(), 0, list );
 242     return last;
 243 }
 244
 245 /**********************************************************************
 246  *                      MDI_CalcDefaultChildPos
 247  *
 248  *  It seems that the default height is about 2/3 of the client rect
 249  */
 250 void MDI_CalcDefaultChildPos( HWND hwndClient, INT total, LPPOINT lpPos, INT delta, UINT *id )
 251 {
 252     INT  nstagger;
 253     RECT rect;
 254     INT spacing = GetSystemMetrics(SM_CYCAPTION) + GetSystemMetrics(SM_CYFRAME) - 1;
 255
 256     if (total < 0) /* we are called from CreateWindow */
 257     {
 258         MDICLIENTINFO *ci = get_client_info(hwndClient);
 259         total = ci ? ci->nTotalCreated : 0;
 260         *id = ci->idFirstChild + ci->nActiveChildren;
 261         TRACE("MDI child id %04x\n", *id);
 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))
 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) && (GetWindowLongW(ci->hwndActiveChild, GWL_STYLE) & WS_VISIBLE))
 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, BOOL activate )
 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 | (activate ? 0 : SWP_NOACTIVATE) );
 511     }
 512 }
 513
 514
 515 /**********************************************************************
 516  *                                      MDIDestroyChild
 517  */
 518 static LRESULT MDIDestroyChild( HWND client, 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         if (next)
 529             MDI_SwitchActiveChild(ci, next, TRUE);
 530         else
 531         {
 532             ShowWindow(child, SW_HIDE);
 533             if (IsZoomed(child))
 534             {
 535                 MDI_RestoreFrameMenu(GetParent(client), child);
 536                 MDI_UpdateFrameText(GetParent(client), client, NULL);
 537             }
 538             MDI_ChildActivate(client, 0);
 539         }
 540     }
 541
 542     for (i = 0; i < ci->nActiveChildren; i++)
 543     {
 544         if (ci->child[i] == child)
 545         {
 546             HWND *new_child = HeapAlloc(GetProcessHeap(), 0, (ci->nActiveChildren - 1) * sizeof(HWND));
 547             memcpy(new_child, ci->child, i * sizeof(HWND));
 548             if (i + 1 < ci->nActiveChildren)
 549                 memcpy(new_child + i, ci->child + i + 1, (ci->nActiveChildren - i - 1) * sizeof(HWND));
 550             HeapFree(GetProcessHeap(), 0, ci->child);
 551             ci->child = new_child;
 552
 553             ci->nActiveChildren--;
 554             break;
 555         }
 556     }
 557
 558     SendMessageW(client, WM_MDIREFRESHMENU, 0, 0);
 559
 560     if (flagDestroy)
 561     {
 562         MDI_PostUpdate(GetParent(child), ci, SB_BOTH+1);
 563         DestroyWindow(child);
 564     }
 565
 566     TRACE("child destroyed - %p\n", child);
 567     return 0;
 568 }
 569
 570
 571 /**********************************************************************
 572  *                                      MDI_ChildActivate
 573  *
 574  * Called in response to WM_CHILDACTIVATE, or when last MDI child
 575  * is being deactivated.
 576  */
 577 static LONG MDI_ChildActivate( HWND client, HWND child )
 578 {
 579     MDICLIENTINFO *clientInfo;
 580     HWND prevActiveWnd, frame;
 581     BOOL isActiveFrameWnd;
 582
 583     clientInfo = get_client_info( client );
 584
 585     if (clientInfo->hwndActiveChild == child) return 0;
 586
 587     TRACE("%p\n", child);
 588
 589     frame = GetParent(client);
 590     isActiveFrameWnd = (GetActiveWindow() == frame);
 591     prevActiveWnd = clientInfo->hwndActiveChild;
 592
 593     /* deactivate prev. active child */
 594     if(prevActiveWnd)
 595     {
 596         SendMessageW( prevActiveWnd, WM_NCACTIVATE, FALSE, 0L );
 597         SendMessageW( prevActiveWnd, WM_MDIACTIVATE, (WPARAM)prevActiveWnd, (LPARAM)child);
 598     }
 599
 600     MDI_SwitchActiveChild( clientInfo, child, FALSE );
 601     clientInfo->hwndActiveChild = child;
 602
 603     MDI_RefreshMenu(clientInfo);
 604
 605     if( isActiveFrameWnd )
 606     {
 607         SendMessageW( child, WM_NCACTIVATE, TRUE, 0L);
 608         SetFocus( client );
 609     }
 610
 611     SendMessageW( child, WM_MDIACTIVATE, (WPARAM)prevActiveWnd, (LPARAM)child );
 612     return TRUE;
 613 }
 614
 615 /* -------------------- MDI client window functions ------------------- */
 616
 617 /**********************************************************************
 618  *                              CreateMDIMenuBitmap
 619  */
 620 static HBITMAP CreateMDIMenuBitmap(void)
 621 {
 622  HDC            hDCSrc  = CreateCompatibleDC(0);
 623  HDC            hDCDest = CreateCompatibleDC(hDCSrc);
 624  HBITMAP        hbClose = LoadBitmapW(0, MAKEINTRESOURCEW(OBM_OLD_CLOSE) );
 625  HBITMAP        hbCopy;
 626  HBITMAP        hobjSrc, hobjDest;
 627
 628  hobjSrc = SelectObject(hDCSrc, hbClose);
 629  hbCopy = CreateCompatibleBitmap(hDCSrc,GetSystemMetrics(SM_CXSIZE),GetSystemMetrics(SM_CYSIZE));
 630  hobjDest = SelectObject(hDCDest, hbCopy);
 631
 632  BitBlt(hDCDest, 0, 0, GetSystemMetrics(SM_CXSIZE), GetSystemMetrics(SM_CYSIZE),
 633           hDCSrc, GetSystemMetrics(SM_CXSIZE), 0, SRCCOPY);
 634
 635  SelectObject(hDCSrc, hobjSrc);
 636  DeleteObject(hbClose);
 637  DeleteDC(hDCSrc);
 638
 639  hobjSrc = SelectObject( hDCDest, GetStockObject(BLACK_PEN) );
 640
 641  MoveToEx( hDCDest, GetSystemMetrics(SM_CXSIZE) - 1, 0, NULL );
 642  LineTo( hDCDest, GetSystemMetrics(SM_CXSIZE) - 1, GetSystemMetrics(SM_CYSIZE) - 1);
 643
 644  SelectObject(hDCDest, hobjSrc );
 645  SelectObject(hDCDest, hobjDest);
 646  DeleteDC(hDCDest);
 647
 648  return hbCopy;
 649 }
 650
 651 /**********************************************************************
 652  *                              MDICascade
 653  */
 654 static LONG MDICascade( HWND client, MDICLIENTINFO *ci )
 655 {
 656     HWND *win_array;
 657     BOOL has_icons = FALSE;
 658     int i, total;
 659
 660     if (IsZoomed(ci->hwndActiveChild))
 661         SendMessageA(client, WM_MDIRESTORE, (WPARAM)ci->hwndActiveChild, 0);
 662
 663     if (ci->nActiveChildren == 0) return 0;
 664
 665     if (!(win_array = WIN_ListChildren( client ))) return 0;
 666
 667     /* remove all the windows we don't want */
 668     for (i = total = 0; win_array[i]; i++)
 669     {
 670         if (!IsWindowVisible( win_array[i] )) continue;
 671         if (GetWindow( win_array[i], GW_OWNER )) continue; /* skip owned windows */
 672         if (IsIconic( win_array[i] ))
 673         {
 674             has_icons = TRUE;
 675             continue;
 676         }
 677         win_array[total++] = win_array[i];
 678     }
 679     win_array[total] = 0;
 680
 681     if (total)
 682     {
 683         INT delta = 0, n = 0, i;
 684         POINT pos[2];
 685         if (has_icons) delta = GetSystemMetrics(SM_CYICONSPACING) + GetSystemMetrics(SM_CYICON);
 686
 687         /* walk the list (backwards) and move windows */
 688         for (i = total - 1; i >= 0; i--)
 689         {
 690             TRACE("move %p to (%ld,%ld) size [%ld,%ld]\n",
 691                   win_array[i], pos[0].x, pos[0].y, pos[1].x, pos[1].y);
 692
 693             MDI_CalcDefaultChildPos(client, n++, pos, delta, NULL);
 694             SetWindowPos( win_array[i], 0, pos[0].x, pos[0].y, pos[1].x, pos[1].y,
 695                           SWP_DRAWFRAME | SWP_NOACTIVATE | SWP_NOZORDER);
 696         }
 697     }
 698     HeapFree( GetProcessHeap(), 0, win_array );
 699
 700     if (has_icons) ArrangeIconicWindows( client );
 701     return 0;
 702 }
 703
 704 /**********************************************************************
 705  *                                      MDITile
 706  */
 707 static void MDITile( HWND client, MDICLIENTINFO *ci, WPARAM wParam )
 708 {
 709     HWND *win_array;
 710     int i, total;
 711     BOOL has_icons = FALSE;
 712
 713     if (IsZoomed(ci->hwndActiveChild))
 714         SendMessageA(client, WM_MDIRESTORE, (WPARAM)ci->hwndActiveChild, 0);
 715
 716     if (ci->nActiveChildren == 0) return;
 717
 718     if (!(win_array = WIN_ListChildren( client ))) return;
 719
 720     /* remove all the windows we don't want */
 721     for (i = total = 0; win_array[i]; i++)
 722     {
 723         if (!IsWindowVisible( win_array[i] )) continue;
 724         if (GetWindow( win_array[i], GW_OWNER )) continue; /* skip owned windows (icon titles) */
 725         if (IsIconic( win_array[i] ))
 726         {
 727             has_icons = TRUE;
 728             continue;
 729         }
 730         if ((wParam & MDITILE_SKIPDISABLED) && !IsWindowEnabled( win_array[i] )) continue;
 731         win_array[total++] = win_array[i];
 732     }
 733     win_array[total] = 0;
 734
 735     TRACE("%u windows to tile\n", total);
 736
 737     if (total)
 738     {
 739         HWND *pWnd = win_array;
 740         RECT rect;
 741         int x, y, xsize, ysize;
 742         int rows, columns, r, c, i;
 743
 744         GetClientRect(client,&rect);
 745         rows    = (int) sqrt((double)total);
 746         columns = total / rows;
 747
 748         if( wParam & MDITILE_HORIZONTAL )  /* version >= 3.1 */
 749         {
 750             i = rows;
 751             rows = columns;  /* exchange r and c */
 752             columns = i;
 753         }
 754
 755         if (has_icons)
 756         {
 757             y = rect.bottom - 2 * GetSystemMetrics(SM_CYICONSPACING) - GetSystemMetrics(SM_CYICON);
 758             rect.bottom = ( y - GetSystemMetrics(SM_CYICON) < rect.top )? rect.bottom: y;
 759         }
 760
 761         ysize   = rect.bottom / rows;
 762         xsize   = rect.right  / columns;
 763
 764         for (x = i = 0, c = 1; c <= columns && *pWnd; c++)
 765         {
 766             if (c == columns)
 767             {
 768                 rows  = total - i;
 769                 ysize = rect.bottom / rows;
 770             }
 771
 772             y = 0;
 773             for (r = 1; r <= rows && *pWnd; r++, i++)
 774             {
 775                 SetWindowPos(*pWnd, 0, x, y, xsize, ysize,
 776                              SWP_DRAWFRAME | SWP_NOACTIVATE | SWP_NOZORDER);
 777                 y += ysize;
 778                 pWnd++;
 779             }
 780             x += xsize;
 781         }
 782     }
 783     HeapFree( GetProcessHeap(), 0, win_array );
 784     if (has_icons) ArrangeIconicWindows( client );
 785 }
 786
 787 /* ----------------------- Frame window ---------------------------- */
 788
 789
 790 /**********************************************************************
 791  *                                      MDI_AugmentFrameMenu
 792  */
 793 static BOOL MDI_AugmentFrameMenu( HWND frame, HWND hChild )
 794 {
 795     HMENU menu = GetMenu( frame );
 796     HMENU       hSysPopup = 0;
 797     HBITMAP hSysMenuBitmap = 0;
 798     INT nItems;
 799     UINT iId;
 800     HICON hIcon;
 801
 802     TRACE("frame %p,child %p\n",frame,hChild);
 803
 804     if( !menu ) return 0;
 805
 806     /* if the system buttons already exist do not add them again */
 807     nItems = GetMenuItemCount(menu) - 1;
 808     iId = GetMenuItemID(menu,nItems) ;
 809     if (iId == SC_RESTORE || iId == SC_CLOSE)
 810         return 0;
 811
 812     /* create a copy of sysmenu popup and insert it into frame menu bar */
 813     if (!(hSysPopup = GetSystemMenu(hChild, FALSE)))
 814         return 0;
 815
 816     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 817                    SC_MINIMIZE, (LPSTR)(DWORD)HBMMENU_MBAR_MINIMIZE ) ;
 818     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 819                    SC_RESTORE, (LPSTR)(DWORD)HBMMENU_MBAR_RESTORE );
 820
 821     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 822                    SC_CLOSE, (LPSTR)(DWORD)HBMMENU_MBAR_CLOSE );
 823
 824     /* The system menu is replaced by the child icon */
 825     hIcon = (HICON)GetClassLongPtrW(hChild, GCLP_HICONSM);
 826     if (!hIcon)
 827         hIcon = (HICON)GetClassLongPtrW(hChild, GCLP_HICON);
 828     if (!hIcon)
 829         hIcon = LoadImageW(0, MAKEINTRESOURCEW(IDI_WINLOGO), IMAGE_ICON, 0, 0, LR_DEFAULTCOLOR);
 830     if (hIcon)
 831     {
 832       HDC hMemDC;
 833       HBITMAP hBitmap, hOldBitmap;
 834       HBRUSH hBrush;
 835       HDC hdc = GetDC(hChild);
 836
 837       if (hdc)
 838       {
 839         int cx, cy;
 840         cx = GetSystemMetrics(SM_CXSMICON);
 841         cy = GetSystemMetrics(SM_CYSMICON);
 842         hMemDC = CreateCompatibleDC(hdc);
 843         hBitmap = CreateCompatibleBitmap(hdc, cx, cy);
 844         hOldBitmap = SelectObject(hMemDC, hBitmap);
 845         SetMapMode(hMemDC, MM_TEXT);
 846         hBrush = CreateSolidBrush(GetSysColor(COLOR_MENU));
 847         DrawIconEx(hMemDC, 0, 0, hIcon, cx, cy, 0, hBrush, DI_NORMAL);
 848         SelectObject (hMemDC, hOldBitmap);
 849         DeleteObject(hBrush);
 850         DeleteDC(hMemDC);
 851         ReleaseDC(hChild, hdc);
 852         hSysMenuBitmap = hBitmap;
 853       }
 854     }
 855
 856     if( !InsertMenuA(menu,0,MF_BYPOSITION | MF_BITMAP | MF_POPUP,
 857                      (UINT_PTR)hSysPopup, (LPSTR)hSysMenuBitmap))
 858     {
 859         TRACE("not inserted\n");
 860         DestroyMenu(hSysPopup);
 861         return 0;
 862     }
 863
 864     EnableMenuItem(hSysPopup, SC_SIZE, MF_BYCOMMAND | MF_GRAYED);
 865     EnableMenuItem(hSysPopup, SC_MOVE, MF_BYCOMMAND | MF_GRAYED);
 866     EnableMenuItem(hSysPopup, SC_MAXIMIZE, MF_BYCOMMAND | MF_GRAYED);
 867     SetMenuDefaultItem(hSysPopup, SC_CLOSE, FALSE);
 868
 869     /* redraw menu */
 870     DrawMenuBar(frame);
 871
 872     return 1;
 873 }
 874
 875 /**********************************************************************
 876  *                                      MDI_RestoreFrameMenu
 877  */
 878 static BOOL MDI_RestoreFrameMenu( HWND frame, HWND hChild )
 879 {
 880     MENUITEMINFOW menuInfo;
 881     HMENU menu = GetMenu( frame );
 882     INT nItems = GetMenuItemCount(menu) - 1;
 883     UINT iId = GetMenuItemID(menu,nItems) ;
 884
 885     TRACE("frame %p,child %p,nIt=%d,iId=%d\n",frame,hChild,nItems,iId);
 886
 887     if( !menu ) return 0;
 888
 889     /* if there is no system buttons then nothing to do */
 890     if(!(iId == SC_RESTORE || iId == SC_CLOSE) )
 891         return 0;
 892
 893     /*
 894      * Remove the system menu, If that menu is the icon of the window
 895      * as it is in win95, we have to delete the bitmap.
 896      */
 897     memset(&menuInfo, 0, sizeof(menuInfo));
 898     menuInfo.cbSize = sizeof(menuInfo);
 899     menuInfo.fMask  = MIIM_DATA | MIIM_TYPE;
 900
 901     GetMenuItemInfoW(menu,
 902                      0,
 903                      TRUE,
 904                      &menuInfo);
 905
 906     RemoveMenu(menu,0,MF_BYPOSITION);
 907
 908     if ( (menuInfo.fType & MFT_BITMAP)           &&
 909          (LOWORD(menuInfo.dwTypeData)!=0)        &&
 910          (LOWORD(menuInfo.dwTypeData)!=HBITMAP_16(hBmpClose)) )
 911     {
 912         DeleteObject(HBITMAP_32(LOWORD(menuInfo.dwTypeData)));
 913     }
 914
 915     /* close */
 916     DeleteMenu(menu, SC_CLOSE, MF_BYCOMMAND);
 917     /* restore */
 918     DeleteMenu(menu, SC_RESTORE, MF_BYCOMMAND);
 919     /* minimize */
 920     DeleteMenu(menu, SC_MINIMIZE, MF_BYCOMMAND);
 921
 922     DrawMenuBar(frame);
 923
 924     return 1;
 925 }
 926
 927
 928 /**********************************************************************
 929  *                                      MDI_UpdateFrameText
 930  *
 931  * used when child window is maximized/restored
 932  *
 933  * Note: lpTitle can be NULL
 934  */
 935 static void MDI_UpdateFrameText( HWND frame, HWND hClient, LPCWSTR lpTitle )
 936 {
 937     WCHAR   lpBuffer[MDI_MAXTITLELENGTH+1];
 938     MDICLIENTINFO *ci = get_client_info( hClient );
 939
 940     TRACE("frameText %s\n", debugstr_w(lpTitle));
 941
 942     if (!ci) return;
 943
 944     if (!lpTitle && !ci->frameTitle)  /* first time around, get title from the frame window */
 945     {
 946         GetWindowTextW( frame, lpBuffer, sizeof(lpBuffer)/sizeof(WCHAR) );
 947         lpTitle = lpBuffer;
 948     }
 949
 950     /* store new "default" title if lpTitle is not NULL */
 951     if (lpTitle)
 952     {
 953         HeapFree( GetProcessHeap(), 0, ci->frameTitle );
 954         if ((ci->frameTitle = HeapAlloc( GetProcessHeap(), 0, (strlenW(lpTitle)+1)*sizeof(WCHAR))))
 955             strcpyW( ci->frameTitle, lpTitle );
 956     }
 957
 958     if (ci->frameTitle)
 959     {
 960         if (IsZoomed(ci->hwndActiveChild) && IsWindowVisible(ci->hwndActiveChild))
 961         {
 962             /* combine frame title and child title if possible */
 963
 964             static const WCHAR lpBracket[]  = {' ','-',' ','[',0};
 965             static const WCHAR lpBracket2[]  = {']',0};
 966             int i_frame_text_length = strlenW(ci->frameTitle);
 967
 968             lstrcpynW( lpBuffer, ci->frameTitle, MDI_MAXTITLELENGTH);
 969
 970             if( i_frame_text_length + 6 < MDI_MAXTITLELENGTH )
 971             {
 972                 strcatW( lpBuffer, lpBracket );
 973                 if (GetWindowTextW( ci->hwndActiveChild, lpBuffer + i_frame_text_length + 4,
 974                                     MDI_MAXTITLELENGTH - i_frame_text_length - 5 ))
 975                     strcatW( lpBuffer, lpBracket2 );
 976                 else
 977                     lpBuffer[i_frame_text_length] = 0;  /* remove bracket */
 978             }
 979         }
 980         else
 981         {
 982             lstrcpynW(lpBuffer, ci->frameTitle, MDI_MAXTITLELENGTH+1 );
 983         }
 984     }
 985     else
 986         lpBuffer[0] = '\0';
 987
 988     DefWindowProcW( frame, WM_SETTEXT, 0, (LPARAM)lpBuffer );
 989 }
 990
 991
 992 /* ----------------------------- Interface ---------------------------- */
 993
 994
 995 /**********************************************************************
 996  *              MDIClientWndProc_common
 997  */
 998 static LRESULT MDIClientWndProc_common( HWND hwnd, UINT message,
 999                                         WPARAM wParam, LPARAM lParam, BOOL unicode )
1000 {
1001     MDICLIENTINFO *ci;
1002
1003     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1004
1005     if (!(ci = get_client_info( hwnd ))) return 0;
1006
1007     switch (message)
1008     {
1009       case WM_CREATE:
1010       {
1011           /* Since we are using only cs->lpCreateParams, we can safely
1012            * cast to LPCREATESTRUCTA here */
1013           LPCREATESTRUCTA cs = (LPCREATESTRUCTA)lParam;
1014           WND *wndPtr = WIN_GetPtr( hwnd );
1015
1016           wndPtr->flags |= WIN_ISMDICLIENT;
1017
1018         /* Translation layer doesn't know what's in the cs->lpCreateParams
1019          * so we have to keep track of what environment we're in. */
1020
1021         if( wndPtr->flags & WIN_ISWIN32 )
1022         {
1023             LPCLIENTCREATESTRUCT ccs = cs->lpCreateParams;
1024             ci->hWindowMenu     = ccs->hWindowMenu;
1025             ci->idFirstChild    = ccs->idFirstChild;
1026         }
1027         else
1028         {
1029             LPCLIENTCREATESTRUCT16 ccs = MapSL((SEGPTR)cs->lpCreateParams);
1030             ci->hWindowMenu     = HMENU_32(ccs->hWindowMenu);
1031             ci->idFirstChild    = ccs->idFirstChild;
1032         }
1033         WIN_ReleasePtr( wndPtr );
1034
1035         ci->child = NULL;
1036         ci->nActiveChildren     = 0;
1037         ci->nTotalCreated       = 0;
1038         ci->frameTitle          = NULL;
1039         ci->mdiFlags            = 0;
1040         ci->hFrameMenu = GetMenu(cs->hwndParent);
1041
1042         if (!hBmpClose) hBmpClose = CreateMDIMenuBitmap();
1043
1044         TRACE("Client created: hwnd %p, Window menu %p, idFirst = %04x\n",
1045               hwnd, ci->hWindowMenu, ci->idFirstChild );
1046         return 0;
1047       }
1048
1049       case WM_DESTROY:
1050       {
1051           if( IsZoomed(ci->hwndActiveChild) )
1052               MDI_RestoreFrameMenu(GetParent(hwnd), ci->hwndActiveChild);
1053
1054           ci->nActiveChildren = 0;
1055           MDI_RefreshMenu(ci);
1056
1057           HeapFree( GetProcessHeap(), 0, ci->child );
1058           HeapFree( GetProcessHeap(), 0, ci->frameTitle );
1059
1060           return 0;
1061       }
1062
1063       case WM_MDIACTIVATE:
1064       {
1065         MDI_SwitchActiveChild( ci, (HWND)wParam, TRUE );
1066         return 0;
1067       }
1068
1069       case WM_MDICASCADE:
1070         return MDICascade(hwnd, ci);
1071
1072       case WM_MDICREATE:
1073         if (lParam)
1074         {
1075             HWND child;
1076
1077             if (unicode)
1078             {
1079                 MDICREATESTRUCTW *csW = (MDICREATESTRUCTW *)lParam;
1080                 child = CreateWindowExW(WS_EX_MDICHILD, csW->szClass,
1081                                             csW->szTitle, csW->style,
1082                                             csW->x, csW->y, csW->cx, csW->cy,
1083                                             hwnd, 0, csW->hOwner,
1084                                             (LPVOID)csW->lParam);
1085             }
1086             else
1087             {
1088                 MDICREATESTRUCTA *csA = (MDICREATESTRUCTA *)lParam;
1089                 child = CreateWindowExA(WS_EX_MDICHILD, csA->szClass,
1090                                             csA->szTitle, csA->style,
1091                                             csA->x, csA->y, csA->cx, csA->cy,
1092                                             hwnd, 0, csA->hOwner,
1093                                             (LPVOID)csA->lParam);
1094             }
1095
1096             if (IsZoomed(ci->hwndActiveChild))
1097             {
1098                 MDI_AugmentFrameMenu(GetParent(hwnd), child);
1099                 MDI_UpdateFrameText(GetParent(hwnd), hwnd, NULL);
1100             }
1101             return (LRESULT)child;
1102         }
1103         return 0;
1104
1105       case WM_MDIDESTROY:
1106           return MDIDestroyChild( hwnd, ci, WIN_GetFullHandle( (HWND)wParam ), TRUE );
1107
1108       case WM_MDIGETACTIVE:
1109           if (lParam) *(BOOL *)lParam = IsZoomed(ci->hwndActiveChild);
1110           return (LRESULT)ci->hwndActiveChild;
1111
1112       case WM_MDIICONARRANGE:
1113         ci->mdiFlags |= MDIF_NEEDUPDATE;
1114         ArrangeIconicWindows( hwnd );
1115         ci->sbRecalc = SB_BOTH+1;
1116         SendMessageW( hwnd, WM_MDICALCCHILDSCROLL, 0, 0 );
1117         return 0;
1118
1119       case WM_MDIMAXIMIZE:
1120         ShowWindow( (HWND)wParam, SW_MAXIMIZE );
1121         return 0;
1122
1123       case WM_MDINEXT: /* lParam != 0 means previous window */
1124       {
1125         HWND next = MDI_GetWindow( ci, WIN_GetFullHandle( (HWND)wParam ), !lParam, 0 );
1126         MDI_SwitchActiveChild( ci, next, TRUE );
1127         break;
1128       }
1129
1130       case WM_MDIRESTORE:
1131         SendMessageW( (HWND)wParam, WM_SYSCOMMAND, SC_RESTORE, 0);
1132         return 0;
1133
1134       case WM_MDISETMENU:
1135           return MDISetMenu( hwnd, (HMENU)wParam, (HMENU)lParam );
1136
1137       case WM_MDIREFRESHMENU:
1138           return MDI_RefreshMenu( ci );
1139
1140       case WM_MDITILE:
1141         ci->mdiFlags |= MDIF_NEEDUPDATE;
1142         ShowScrollBar( hwnd, SB_BOTH, FALSE );
1143         MDITile( hwnd, ci, wParam );
1144         ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1145         return 0;
1146
1147       case WM_VSCROLL:
1148       case WM_HSCROLL:
1149         ci->mdiFlags |= MDIF_NEEDUPDATE;
1150         ScrollChildren( hwnd, message, wParam, lParam );
1151         ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1152         return 0;
1153
1154       case WM_SETFOCUS:
1155           if (ci->hwndActiveChild && !IsIconic( ci->hwndActiveChild ))
1156               SetFocus( ci->hwndActiveChild );
1157           return 0;
1158
1159       case WM_NCACTIVATE:
1160         if( ci->hwndActiveChild )
1161             SendMessageW(ci->hwndActiveChild, message, wParam, lParam);
1162         break;
1163
1164       case WM_PARENTNOTIFY:
1165         switch (LOWORD(wParam))
1166         {
1167         case WM_CREATE:
1168             if (GetWindowLongW((HWND)lParam, GWL_EXSTYLE) & WS_EX_MDICHILD)
1169             {
1170                 ci->nTotalCreated++;
1171                 ci->nActiveChildren++;
1172
1173                 if (!ci->child)
1174                     ci->child = HeapAlloc(GetProcessHeap(), 0, sizeof(HWND));
1175                 else
1176                     ci->child = HeapReAlloc(GetProcessHeap(), 0, ci->child, sizeof(HWND) * ci->nActiveChildren);
1177
1178                 TRACE("Adding MDI child %p, # of children %d\n",
1179                       (HWND)lParam, ci->nActiveChildren);
1180
1181                 ci->child[ci->nActiveChildren - 1] = (HWND)lParam;
1182             }
1183             break;
1184
1185         case WM_LBUTTONDOWN:
1186             {
1187             HWND child;
1188             POINT pt;
1189             pt.x = (short)LOWORD(lParam);
1190             pt.y = (short)HIWORD(lParam);
1191             child = ChildWindowFromPoint(hwnd, pt);
1192
1193             TRACE("notification from %p (%li,%li)\n",child,pt.x,pt.y);
1194
1195             if( child && child != hwnd && child != ci->hwndActiveChild )
1196                 SetWindowPos(child, 0,0,0,0,0, SWP_NOSIZE | SWP_NOMOVE );
1197             break;
1198             }
1199         }
1200         return 0;
1201
1202       case WM_SIZE:
1203         if( IsWindow(ci->hwndActiveChild) && IsZoomed(ci->hwndActiveChild) &&
1204             (GetWindowLongW(ci->hwndActiveChild, GWL_STYLE) & WS_VISIBLE) )
1205         {
1206             RECT        rect;
1207
1208             rect.left = 0;
1209             rect.top = 0;
1210             rect.right = LOWORD(lParam);
1211             rect.bottom = HIWORD(lParam);
1212
1213             AdjustWindowRectEx(&rect, GetWindowLongA(ci->hwndActiveChild, GWL_STYLE),
1214                                0, GetWindowLongA(ci->hwndActiveChild, GWL_EXSTYLE) );
1215             MoveWindow(ci->hwndActiveChild, rect.left, rect.top,
1216                          rect.right - rect.left, rect.bottom - rect.top, 1);
1217         }
1218         else
1219             MDI_PostUpdate(hwnd, ci, SB_BOTH+1);
1220
1221         break;
1222
1223       case WM_MDICALCCHILDSCROLL:
1224         if( (ci->mdiFlags & MDIF_NEEDUPDATE) && ci->sbRecalc )
1225         {
1226             CalcChildScroll(hwnd, ci->sbRecalc-1);
1227             ci->sbRecalc = 0;
1228             ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1229         }
1230         return 0;
1231     }
1232     return unicode ? DefWindowProcW( hwnd, message, wParam, lParam ) :
1233                      DefWindowProcA( hwnd, message, wParam, lParam );
1234 }
1235
1236 /***********************************************************************
1237  *              MDIClientWndProcA
1238  */
1239 static LRESULT WINAPI MDIClientWndProcA( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
1240 {
1241     if (!IsWindow(hwnd)) return 0;
1242     return MDIClientWndProc_common( hwnd, message, wParam, lParam, FALSE );
1243 }
1244
1245 /***********************************************************************
1246  *              MDIClientWndProcW
1247  */
1248 static LRESULT WINAPI MDIClientWndProcW( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
1249 {
1250     if (!IsWindow(hwnd)) return 0;
1251     return MDIClientWndProc_common( hwnd, message, wParam, lParam, TRUE );
1252 }
1253
1254 /***********************************************************************
1255  *              DefFrameProcA (USER32.@)
1256  */
1257 LRESULT WINAPI DefFrameProcA( HWND hwnd, HWND hwndMDIClient,
1258                                 UINT message, WPARAM wParam, LPARAM lParam)
1259 {
1260     if (hwndMDIClient)
1261     {
1262         switch (message)
1263         {
1264         case WM_SETTEXT:
1265             {
1266                 DWORD len = MultiByteToWideChar( CP_ACP, 0, (LPSTR)lParam, -1, NULL, 0 );
1267                 LPWSTR text = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1268                 MultiByteToWideChar( CP_ACP, 0, (LPSTR)lParam, -1, text, len );
1269                 MDI_UpdateFrameText( hwnd, hwndMDIClient, text );
1270                 HeapFree( GetProcessHeap(), 0, text );
1271             }
1272             return 1; /* success. FIXME: check text length */
1273
1274         case WM_COMMAND:
1275         case WM_NCACTIVATE:
1276         case WM_NEXTMENU:
1277         case WM_SETFOCUS:
1278         case WM_SIZE:
1279             return DefFrameProcW( hwnd, hwndMDIClient, message, wParam, lParam );
1280         }
1281     }
1282     return DefWindowProcA(hwnd, message, wParam, lParam);
1283 }
1284
1285
1286 /***********************************************************************
1287  *              DefFrameProcW (USER32.@)
1288  */
1289 LRESULT WINAPI DefFrameProcW( HWND hwnd, HWND hwndMDIClient,
1290                                 UINT message, WPARAM wParam, LPARAM lParam)
1291 {
1292     MDICLIENTINFO *ci = get_client_info( hwndMDIClient );
1293
1294     TRACE("%p %p %04x (%s) %08x %08lx\n", hwnd, hwndMDIClient, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1295
1296     if (ci)
1297     {
1298         switch (message)
1299         {
1300         case WM_COMMAND:
1301             {
1302                 WORD id = LOWORD(wParam);
1303                 /* check for possible syscommands for maximized MDI child */
1304                 if (id <  ci->idFirstChild || id >= ci->idFirstChild + ci->nActiveChildren)
1305                 {
1306                     if( (id - 0xf000) & 0xf00f ) break;
1307                     if( !IsZoomed(ci->hwndActiveChild) ) break;
1308                     switch( id )
1309                     {
1310                     case SC_SIZE:
1311                     case SC_MOVE:
1312                     case SC_MINIMIZE:
1313                     case SC_MAXIMIZE:
1314                     case SC_NEXTWINDOW:
1315                     case SC_PREVWINDOW:
1316                     case SC_CLOSE:
1317                     case SC_RESTORE:
1318                         return SendMessageW( ci->hwndActiveChild, WM_SYSCOMMAND,
1319                                              wParam, lParam);
1320                     }
1321                 }
1322                 else
1323                 {
1324                     HWND childHwnd;
1325                     if (id - ci->idFirstChild == MDI_MOREWINDOWSLIMIT)
1326                         /* User chose "More Windows..." */
1327                         childHwnd = MDI_MoreWindowsDialog(hwndMDIClient);
1328                     else
1329                         /* User chose one of the windows listed in the "Windows" menu */
1330                         childHwnd = MDI_GetChildByID(hwndMDIClient, id, ci);
1331
1332                     if( childHwnd )
1333                         SendMessageW( hwndMDIClient, WM_MDIACTIVATE, (WPARAM)childHwnd, 0 );
1334                 }
1335             }
1336             break;
1337
1338         case WM_NCACTIVATE:
1339             SendMessageW(hwndMDIClient, message, wParam, lParam);
1340             break;
1341
1342         case WM_SETTEXT:
1343             MDI_UpdateFrameText( hwnd, hwndMDIClient, (LPWSTR)lParam );
1344             return 1; /* success. FIXME: check text length */
1345
1346         case WM_SETFOCUS:
1347             SetFocus(hwndMDIClient);
1348             break;
1349
1350         case WM_SIZE:
1351             MoveWindow(hwndMDIClient, 0, 0, LOWORD(lParam), HIWORD(lParam), TRUE);
1352             break;
1353
1354         case WM_NEXTMENU:
1355             {
1356                 MDINEXTMENU *next_menu = (MDINEXTMENU *)lParam;
1357
1358                 if (!IsIconic(hwnd) && ci->hwndActiveChild && !IsZoomed(ci->hwndActiveChild))
1359                 {
1360                     /* control menu is between the frame system menu and
1361                      * the first entry of menu bar */
1362                     WND *wndPtr = WIN_GetPtr(hwnd);
1363
1364                     if( (wParam == VK_LEFT && GetMenu(hwnd) == next_menu->hmenuIn) ||
1365                         (wParam == VK_RIGHT && GetSubMenu(wndPtr->hSysMenu, 0) == next_menu->hmenuIn) )
1366                     {
1367                         WIN_ReleasePtr(wndPtr);
1368                         wndPtr = WIN_GetPtr(ci->hwndActiveChild);
1369                         next_menu->hmenuNext = GetSubMenu(wndPtr->hSysMenu, 0);
1370                         next_menu->hwndNext = ci->hwndActiveChild;
1371                     }
1372                     WIN_ReleasePtr(wndPtr);
1373                 }
1374                 return 0;
1375             }
1376         }
1377     }
1378
1379     return DefWindowProcW( hwnd, message, wParam, lParam );
1380 }
1381
1382 /***********************************************************************
1383  *              DefMDIChildProcA (USER32.@)
1384  */
1385 LRESULT WINAPI DefMDIChildProcA( HWND hwnd, UINT message,
1386                                    WPARAM wParam, LPARAM lParam )
1387 {
1388     HWND client = GetParent(hwnd);
1389     MDICLIENTINFO *ci = get_client_info( client );
1390
1391     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1392
1393     hwnd = WIN_GetFullHandle( hwnd );
1394     if (!ci) return DefWindowProcA( hwnd, message, wParam, lParam );
1395
1396     switch (message)
1397     {
1398     case WM_SETTEXT:
1399         DefWindowProcA(hwnd, message, wParam, lParam);
1400         if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild) )
1401             MDI_UpdateFrameText( GetParent(client), client, NULL );
1402         return 1; /* success. FIXME: check text length */
1403
1404     case WM_GETMINMAXINFO:
1405     case WM_MENUCHAR:
1406     case WM_CLOSE:
1407     case WM_SETFOCUS:
1408     case WM_CHILDACTIVATE:
1409     case WM_SYSCOMMAND:
1410     case WM_SHOWWINDOW:
1411     case WM_SETVISIBLE:
1412     case WM_SIZE:
1413     case WM_NEXTMENU:
1414     case WM_SYSCHAR:
1415     case WM_DESTROY:
1416         return DefMDIChildProcW( hwnd, message, wParam, lParam );
1417     }
1418     return DefWindowProcA(hwnd, message, wParam, lParam);
1419 }
1420
1421
1422 /***********************************************************************
1423  *              DefMDIChildProcW (USER32.@)
1424  */
1425 LRESULT WINAPI DefMDIChildProcW( HWND hwnd, UINT message,
1426                                    WPARAM wParam, LPARAM lParam )
1427 {
1428     HWND client = GetParent(hwnd);
1429     MDICLIENTINFO *ci = get_client_info( client );
1430
1431     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1432
1433     hwnd = WIN_GetFullHandle( hwnd );
1434     if (!ci) return DefWindowProcW( hwnd, message, wParam, lParam );
1435
1436     switch (message)
1437     {
1438     case WM_SETTEXT:
1439         DefWindowProcW(hwnd, message, wParam, lParam);
1440         if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild) )
1441             MDI_UpdateFrameText( GetParent(client), client, NULL );
1442         return 1; /* success. FIXME: check text length */
1443
1444     case WM_GETMINMAXINFO:
1445         MDI_ChildGetMinMaxInfo( client, hwnd, (MINMAXINFO *)lParam );
1446         return 0;
1447
1448     case WM_MENUCHAR:
1449         return 0x00010000; /* MDI children don't have menu bars */
1450
1451     case WM_CLOSE:
1452         SendMessageW( client, WM_MDIDESTROY, (WPARAM)hwnd, 0 );
1453         return 0;
1454
1455     case WM_CHILDACTIVATE:
1456         MDI_ChildActivate( client, hwnd );
1457         return 0;
1458
1459     case WM_SYSCOMMAND:
1460         switch( wParam )
1461         {
1462         case SC_MOVE:
1463             if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild))
1464                 return 0;
1465             break;
1466         case SC_RESTORE:
1467         case SC_MINIMIZE:
1468             break;
1469         case SC_MAXIMIZE:
1470             if (ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild))
1471                 return SendMessageW( GetParent(client), message, wParam, lParam);
1472             break;
1473         case SC_NEXTWINDOW:
1474             SendMessageW( client, WM_MDINEXT, 0, 0);
1475             return 0;
1476         case SC_PREVWINDOW:
1477             SendMessageW( client, WM_MDINEXT, 0, 1);
1478             return 0;
1479         }
1480         break;
1481
1482     case WM_SHOWWINDOW:
1483     case WM_SETVISIBLE:
1484         if (IsZoomed(ci->hwndActiveChild)) ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1485         else MDI_PostUpdate(client, ci, SB_BOTH+1);
1486         break;
1487
1488     case WM_SIZE:
1489         if( hwnd == ci->hwndActiveChild )
1490         {
1491             if( wParam == SIZE_MAXIMIZED )
1492             {
1493                 TRACE("maximizing child %p\n", hwnd );
1494
1495                 MDI_AugmentFrameMenu( GetParent(client), hwnd );
1496             }
1497             else
1498                 MDI_RestoreFrameMenu( GetParent(client), hwnd );
1499         }
1500
1501         MDI_UpdateFrameText( GetParent(client), client, NULL );
1502         MDI_RefreshMenu(ci);
1503         MDI_PostUpdate(client, ci, SB_BOTH+1);
1504         break;
1505
1506     case WM_NEXTMENU:
1507         {
1508             MDINEXTMENU *next_menu = (MDINEXTMENU *)lParam;
1509             HWND parent = GetParent(client);
1510
1511             if( wParam == VK_LEFT )  /* switch to frame system menu */
1512             {
1513                 WND *wndPtr = WIN_GetPtr( parent );
1514                 next_menu->hmenuNext = GetSubMenu( wndPtr->hSysMenu, 0 );
1515                 WIN_ReleasePtr( wndPtr );
1516             }
1517             if( wParam == VK_RIGHT )  /* to frame menu bar */
1518             {
1519                 next_menu->hmenuNext = GetMenu(parent);
1520             }
1521             next_menu->hwndNext = parent;
1522             return 0;
1523         }
1524
1525     case WM_SYSCHAR:
1526         if (wParam == '-')
1527         {
1528             SendMessageW( hwnd, WM_SYSCOMMAND, (WPARAM)SC_KEYMENU, (DWORD)VK_SPACE);
1529             return 0;
1530         }
1531         break;
1532
1533     case WM_DESTROY:
1534         /* Remove itself from the Window menu */
1535         MDI_RefreshMenu(ci);
1536         break;
1537     }
1538     return DefWindowProcW(hwnd, message, wParam, lParam);
1539 }
1540
1541 /**********************************************************************
1542  *              CreateMDIWindowA (USER32.@) Creates a MDI child
1543  *
1544  * RETURNS
1545  *    Success: Handle to created window
1546  *    Failure: NULL
1547  */
1548 HWND WINAPI CreateMDIWindowA(
1549     LPCSTR lpClassName,    /* [in] Pointer to registered child class name */
1550     LPCSTR lpWindowName,   /* [in] Pointer to window name */
1551     DWORD dwStyle,         /* [in] Window style */
1552     INT X,               /* [in] Horizontal position of window */
1553     INT Y,               /* [in] Vertical position of window */
1554     INT nWidth,          /* [in] Width of window */
1555     INT nHeight,         /* [in] Height of window */
1556     HWND hWndParent,     /* [in] Handle to parent window */
1557     HINSTANCE hInstance, /* [in] Handle to application instance */
1558     LPARAM lParam)         /* [in] Application-defined value */
1559 {
1560     TRACE("(%s,%s,%08lx,%d,%d,%d,%d,%p,%p,%08lx)\n",
1561           debugstr_a(lpClassName),debugstr_a(lpWindowName),dwStyle,X,Y,
1562           nWidth,nHeight,hWndParent,hInstance,lParam);
1563
1564     return CreateWindowExA(WS_EX_MDICHILD, lpClassName, lpWindowName,
1565                            dwStyle, X, Y, nWidth, nHeight, hWndParent,
1566                            0, hInstance, (LPVOID)lParam);
1567 }
1568
1569 /***********************************************************************
1570  *              CreateMDIWindowW (USER32.@) Creates a MDI child
1571  *
1572  * RETURNS
1573  *    Success: Handle to created window
1574  *    Failure: NULL
1575  */
1576 HWND WINAPI CreateMDIWindowW(
1577     LPCWSTR lpClassName,    /* [in] Pointer to registered child class name */
1578     LPCWSTR lpWindowName,   /* [in] Pointer to window name */
1579     DWORD dwStyle,         /* [in] Window style */
1580     INT X,               /* [in] Horizontal position of window */
1581     INT Y,               /* [in] Vertical position of window */
1582     INT nWidth,          /* [in] Width of window */
1583     INT nHeight,         /* [in] Height of window */
1584     HWND hWndParent,     /* [in] Handle to parent window */
1585     HINSTANCE hInstance, /* [in] Handle to application instance */
1586     LPARAM lParam)         /* [in] Application-defined value */
1587 {
1588     TRACE("(%s,%s,%08lx,%d,%d,%d,%d,%p,%p,%08lx)\n",
1589           debugstr_w(lpClassName), debugstr_w(lpWindowName), dwStyle, X, Y,
1590           nWidth, nHeight, hWndParent, hInstance, lParam);
1591
1592     return CreateWindowExW(WS_EX_MDICHILD, lpClassName, lpWindowName,
1593                            dwStyle, X, Y, nWidth, nHeight, hWndParent,
1594                            0, hInstance, (LPVOID)lParam);
1595 }
1596
1597 /**********************************************************************
1598  *              TranslateMDISysAccel (USER32.@)
1599  */
1600 BOOL WINAPI TranslateMDISysAccel( HWND hwndClient, LPMSG msg )
1601 {
1602     if (msg->message == WM_KEYDOWN || msg->message == WM_SYSKEYDOWN)
1603     {
1604         MDICLIENTINFO *ci = get_client_info( hwndClient );
1605         WPARAM wParam = 0;
1606
1607         if (!ci || !IsWindowEnabled(ci->hwndActiveChild)) return 0;
1608
1609         /* translate if the Ctrl key is down and Alt not. */
1610
1611         if( (GetKeyState(VK_CONTROL) & 0x8000) && !(GetKeyState(VK_MENU) & 0x8000))
1612         {
1613             switch( msg->wParam )
1614             {
1615             case VK_F6:
1616             case VK_TAB:
1617                 wParam = ( GetKeyState(VK_SHIFT) & 0x8000 ) ? SC_NEXTWINDOW : SC_PREVWINDOW;
1618                 break;
1619             case VK_F4:
1620             case VK_RBUTTON:
1621                 wParam = SC_CLOSE;
1622                 break;
1623             default:
1624                 return 0;
1625             }
1626             TRACE("wParam = %04x\n", wParam);
1627             SendMessageW(ci->hwndActiveChild, WM_SYSCOMMAND, wParam, (LPARAM)msg->wParam);
1628             return 1;
1629         }
1630     }
1631     return 0; /* failure */
1632 }
1633
1634 /***********************************************************************
1635  *              CalcChildScroll (USER32.@)
1636  */
1637 void WINAPI CalcChildScroll( HWND hwnd, INT scroll )
1638 {
1639     SCROLLINFO info;
1640     RECT childRect, clientRect;
1641     HWND *list;
1642
1643     GetClientRect( hwnd, &clientRect );
1644     SetRectEmpty( &childRect );
1645
1646     if ((list = WIN_ListChildren( hwnd )))
1647     {
1648         int i;
1649         for (i = 0; list[i]; i++)
1650         {
1651             DWORD style = GetWindowLongW( list[i], GWL_STYLE );
1652             if (style & WS_MAXIMIZE)
1653             {
1654                 HeapFree( GetProcessHeap(), 0, list );
1655                 ShowScrollBar( hwnd, SB_BOTH, FALSE );
1656                 return;
1657             }
1658             if (style & WS_VISIBLE)
1659             {
1660                 RECT rect;
1661                 GetWindowRect( list[i], &rect );
1662                 UnionRect( &childRect, &rect, &childRect );
1663             }
1664         }
1665         HeapFree( GetProcessHeap(), 0, list );
1666     }
1667     MapWindowPoints( 0, hwnd, (POINT *)&childRect, 2 );
1668     UnionRect( &childRect, &clientRect, &childRect );
1669
1670     /* set common info values */
1671     info.cbSize = sizeof(info);
1672     info.fMask = SIF_POS | SIF_RANGE;
1673
1674     /* set the specific */
1675     switch( scroll )
1676     {
1677         case SB_BOTH:
1678         case SB_HORZ:
1679                         info.nMin = childRect.left;
1680                         info.nMax = childRect.right - clientRect.right;
1681                         info.nPos = clientRect.left - childRect.left;
1682                         SetScrollInfo(hwnd, SB_HORZ, &info, TRUE);
1683                         if (scroll == SB_HORZ) break;
1684                         /* fall through */
1685         case SB_VERT:
1686                         info.nMin = childRect.top;
1687                         info.nMax = childRect.bottom - clientRect.bottom;
1688                         info.nPos = clientRect.top - childRect.top;
1689                         SetScrollInfo(hwnd, SB_VERT, &info, TRUE);
1690                         break;
1691     }
1692 }
1693
1694
1695 /***********************************************************************
1696  *              ScrollChildren (USER32.@)
1697  */
1698 void WINAPI ScrollChildren(HWND hWnd, UINT uMsg, WPARAM wParam,
1699                              LPARAM lParam)
1700 {
1701     INT newPos = -1;
1702     INT curPos, length, minPos, maxPos, shift;
1703     RECT rect;
1704
1705     GetClientRect( hWnd, &rect );
1706
1707     switch(uMsg)
1708     {
1709     case WM_HSCROLL:
1710         GetScrollRange(hWnd,SB_HORZ,&minPos,&maxPos);
1711         curPos = GetScrollPos(hWnd,SB_HORZ);
1712         length = (rect.right - rect.left) / 2;
1713         shift = GetSystemMetrics(SM_CYHSCROLL);
1714         break;
1715     case WM_VSCROLL:
1716         GetScrollRange(hWnd,SB_VERT,&minPos,&maxPos);
1717         curPos = GetScrollPos(hWnd,SB_VERT);
1718         length = (rect.bottom - rect.top) / 2;
1719         shift = GetSystemMetrics(SM_CXVSCROLL);
1720         break;
1721     default:
1722         return;
1723     }
1724
1725     switch( wParam )
1726     {
1727         case SB_LINEUP:
1728                         newPos = curPos - shift;
1729                         break;
1730         case SB_LINEDOWN:
1731                         newPos = curPos + shift;
1732                         break;
1733         case SB_PAGEUP:
1734                         newPos = curPos - length;
1735                         break;
1736         case SB_PAGEDOWN:
1737                         newPos = curPos + length;
1738                         break;
1739
1740         case SB_THUMBPOSITION:
1741                         newPos = LOWORD(lParam);
1742                         break;
1743
1744         case SB_THUMBTRACK:
1745                         return;
1746
1747         case SB_TOP:
1748                         newPos = minPos;
1749                         break;
1750         case SB_BOTTOM:
1751                         newPos = maxPos;
1752                         break;
1753         case SB_ENDSCROLL:
1754                         CalcChildScroll(hWnd,(uMsg == WM_VSCROLL)?SB_VERT:SB_HORZ);
1755                         return;
1756     }
1757
1758     if( newPos > maxPos )
1759         newPos = maxPos;
1760     else
1761         if( newPos < minPos )
1762             newPos = minPos;
1763
1764     SetScrollPos(hWnd, (uMsg == WM_VSCROLL)?SB_VERT:SB_HORZ , newPos, TRUE);
1765
1766     if( uMsg == WM_VSCROLL )
1767         ScrollWindowEx(hWnd ,0 ,curPos - newPos, NULL, NULL, 0, NULL,
1768                         SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
1769     else
1770         ScrollWindowEx(hWnd ,curPos - newPos, 0, NULL, NULL, 0, NULL,
1771                         SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
1772 }
1773
1774
1775 /******************************************************************************
1776  *              CascadeWindows (USER32.@) Cascades MDI child windows
1777  *
1778  * RETURNS
1779  *    Success: Number of cascaded windows.
1780  *    Failure: 0
1781  */
1782 WORD WINAPI
1783 CascadeWindows (HWND hwndParent, UINT wFlags, const LPRECT lpRect,
1784                 UINT cKids, const HWND *lpKids)
1785 {
1786     FIXME("(%p,0x%08x,...,%u,...): stub\n", hwndParent, wFlags, cKids);
1787     return 0;
1788 }
1789
1790
1791 /******************************************************************************
1792  *              TileWindows (USER32.@) Tiles MDI child windows
1793  *
1794  * RETURNS
1795  *    Success: Number of tiled windows.
1796  *    Failure: 0
1797  */
1798 WORD WINAPI
1799 TileWindows (HWND hwndParent, UINT wFlags, const LPRECT lpRect,
1800              UINT cKids, const HWND *lpKids)
1801 {
1802     FIXME("(%p,0x%08x,...,%u,...): stub\n", hwndParent, wFlags, cKids);
1803     return 0;
1804 }
1805
1806 /************************************************************************
1807  *              "More Windows..." functionality
1808  */
1809
1810 /*              MDI_MoreWindowsDlgProc
1811  *
1812  *    This function will process the messages sent to the "More Windows..."
1813  *    dialog.
1814  *    Return values:  0    = cancel pressed
1815  *                    HWND = ok pressed or double-click in the list...
1816  *
1817  */
1818
1819 static INT_PTR WINAPI MDI_MoreWindowsDlgProc (HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam)
1820 {
1821     switch (iMsg)
1822     {
1823        case WM_INITDIALOG:
1824        {
1825            UINT widest       = 0;
1826            UINT length;
1827            UINT i;
1828            MDICLIENTINFO *ci = get_client_info( (HWND)lParam );
1829            HWND hListBox = GetDlgItem(hDlg, MDI_IDC_LISTBOX);
1830
1831            for (i = 0; i < ci->nActiveChildren; i++)
1832            {
1833                WCHAR buffer[MDI_MAXTITLELENGTH];
1834
1835                if (!InternalGetWindowText( ci->child[i], buffer, sizeof(buffer)/sizeof(WCHAR) ))
1836                    continue;
1837                SendMessageW(hListBox, LB_ADDSTRING, 0, (LPARAM)buffer );
1838                SendMessageW(hListBox, LB_SETITEMDATA, i, (LPARAM)ci->child[i] );
1839                length = strlenW(buffer);  /* FIXME: should use GetTextExtentPoint */
1840                if (length > widest)
1841                    widest = length;
1842            }
1843            /* Make sure the horizontal scrollbar scrolls ok */
1844            SendMessageW(hListBox, LB_SETHORIZONTALEXTENT, widest * 6, 0);
1845
1846            /* Set the current selection */
1847            SendMessageW(hListBox, LB_SETCURSEL, MDI_MOREWINDOWSLIMIT, 0);
1848            return TRUE;
1849        }
1850
1851        case WM_COMMAND:
1852            switch (LOWORD(wParam))
1853            {
1854                 default:
1855                     if (HIWORD(wParam) != LBN_DBLCLK) break;
1856                     /* fall through */
1857                 case IDOK:
1858                 {
1859                     /*  windows are sorted by menu ID, so we must return the
1860                      *  window associated to the given id
1861                      */
1862                     HWND hListBox     = GetDlgItem(hDlg, MDI_IDC_LISTBOX);
1863                     UINT index        = SendMessageW(hListBox, LB_GETCURSEL, 0, 0);
1864                     LRESULT res = SendMessageW(hListBox, LB_GETITEMDATA, index, 0);
1865                     EndDialog(hDlg, res);
1866                     return TRUE;
1867                 }
1868                 case IDCANCEL:
1869                     EndDialog(hDlg, 0);
1870                     return TRUE;
1871            }
1872            break;
1873     }
1874     return FALSE;
1875 }
1876
1877 /*
1878  *
1879  *                      MDI_MoreWindowsDialog
1880  *
1881  *     Prompts the user with a listbox containing the opened
1882  *     documents. The user can then choose a windows and click
1883  *     on OK to set the current window to the one selected, or
1884  *     CANCEL to cancel. The function returns a handle to the
1885  *     selected window.
1886  */
1887
1888 static HWND MDI_MoreWindowsDialog(HWND hwnd)
1889 {
1890     LPCVOID template;
1891     HRSRC hRes;
1892     HANDLE hDlgTmpl;
1893
1894     hRes = FindResourceA(user32_module, "MDI_MOREWINDOWS", (LPSTR)RT_DIALOG);
1895
1896     if (hRes == 0)
1897         return 0;
1898
1899     hDlgTmpl = LoadResource(user32_module, hRes );
1900
1901     if (hDlgTmpl == 0)
1902         return 0;
1903
1904     template = LockResource( hDlgTmpl );
1905
1906     if (template == 0)
1907         return 0;
1908
1909     return (HWND) DialogBoxIndirectParamA(user32_module,
1910                                           (const DLGTEMPLATE*) template,
1911                                           hwnd, MDI_MoreWindowsDlgProc, (LPARAM) hwnd);
1912 }