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, BOOL, 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 ) return; /* no window to switch to */
 494
 495     if ( hwndTo != hwndPrev )
 496     {
 497         SetWindowPos( hwndTo, HWND_TOP, 0, 0, 0, 0,
 498                       SWP_NOMOVE | SWP_NOSIZE );
 499
 500         if( bNextWindow && hwndPrev )
 501             SetWindowPos( hwndPrev, HWND_BOTTOM, 0, 0, 0, 0,
 502                           SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE );
 503     }
 504 }
 505
 506
 507 /**********************************************************************
 508  *                                      MDIDestroyChild
 509  */
 510 static LRESULT MDIDestroyChild( HWND parent, MDICLIENTINFO *ci,
 511                                 HWND child, BOOL flagDestroy )
 512 {
 513     UINT i;
 514
 515     TRACE("# of managed children %u\n", ci->nActiveChildren);
 516
 517     if( child == ci->hwndActiveChild )
 518     {
 519         MDI_SwitchActiveChild(parent, child, TRUE);
 520
 521         if( child == ci->hwndActiveChild )
 522         {
 523             ShowWindow( child, SW_HIDE);
 524             if( child == ci->hwndActiveChild && IsZoomed(ci->hwndActiveChild) )
 525             {
 526                 HWND frame = GetParent(parent);
 527                 MDI_RestoreFrameMenu( frame, child );
 528                 MDI_UpdateFrameText( frame, parent, TRUE, NULL);
 529             }
 530
 531             MDI_ChildActivate(parent, 0);
 532         }
 533     }
 534
 535     for (i = 0; i < ci->nActiveChildren; i++)
 536     {
 537         if (ci->child[i] == child)
 538         {
 539             HWND *new_child = HeapAlloc(GetProcessHeap(), 0, (ci->nActiveChildren - 1) * sizeof(HWND));
 540             memcpy(new_child, ci->child, i * sizeof(HWND));
 541             if (i + 1 < ci->nActiveChildren)
 542                 memcpy(new_child + i, ci->child + i + 1, (ci->nActiveChildren - i - 1) * sizeof(HWND));
 543             HeapFree(GetProcessHeap(), 0, ci->child);
 544             ci->child = new_child;
 545
 546             ci->nActiveChildren--;
 547             break;
 548         }
 549     }
 550
 551     if (flagDestroy)
 552     {
 553         MDI_PostUpdate(GetParent(child), ci, SB_BOTH+1);
 554         DestroyWindow(child);
 555     }
 556
 557     TRACE("child destroyed - %p\n", child);
 558     return 0;
 559 }
 560
 561
 562 /**********************************************************************
 563  *                                      MDI_ChildActivate
 564  *
 565  * Note: hWndChild is NULL when last child is being destroyed
 566  */
 567 static LONG MDI_ChildActivate( HWND client, HWND child )
 568 {
 569     MDICLIENTINFO *clientInfo;
 570     HWND prevActiveWnd;
 571     BOOL isActiveFrameWnd;
 572
 573     if (child && (!IsWindowEnabled( child ))) return 0;
 574
 575     clientInfo = get_client_info( client );
 576
 577     TRACE("%p\n", child);
 578
 579     isActiveFrameWnd = (GetActiveWindow() == GetParent(client));
 580     prevActiveWnd = clientInfo->hwndActiveChild;
 581
 582     /* deactivate prev. active child */
 583     if(prevActiveWnd)
 584     {
 585         SetWindowLongW( prevActiveWnd, GWL_STYLE,
 586                         GetWindowLongW( prevActiveWnd, GWL_STYLE ) | WS_SYSMENU );
 587         SendMessageW( prevActiveWnd, WM_NCACTIVATE, FALSE, 0L );
 588         SendMessageW( prevActiveWnd, WM_MDIACTIVATE, (WPARAM)prevActiveWnd, (LPARAM)child);
 589     }
 590
 591     /* set appearance */
 592     if (IsZoomed(clientInfo->hwndActiveChild) && clientInfo->hwndActiveChild != child)
 593     {
 594         INT cmd = SW_SHOWNORMAL;
 595
 596         if( child )
 597         {
 598             HMENU hSysMenu = GetSystemMenu(child, FALSE);
 599             UINT state = 0;
 600             if (hSysMenu)
 601                 state = GetMenuState(hSysMenu, SC_MAXIMIZE, MF_BYCOMMAND);
 602             if (state != 0xFFFFFFFF && !(state & (MF_DISABLED | MF_GRAYED)))
 603             {
 604                 SendMessageW(clientInfo->hwndActiveChild, WM_SYSCOMMAND, SC_RESTORE, 0);
 605                 cmd = SW_SHOWMAXIMIZED;
 606             }
 607
 608             clientInfo->hwndActiveChild = child;
 609         }
 610
 611         ShowWindow( clientInfo->hwndActiveChild, cmd );
 612     }
 613
 614     clientInfo->hwndActiveChild = child;
 615
 616     /* check if we have any children left */
 617     if( !child )
 618     {
 619         if( isActiveFrameWnd )
 620             SetFocus( client );
 621         return 0;
 622     }
 623
 624     MDI_RefreshMenu(clientInfo);
 625
 626     /* bring active child to the top */
 627     SetWindowPos( child, 0,0,0,0,0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE);
 628
 629     if( isActiveFrameWnd )
 630     {
 631             SendMessageA( child, WM_NCACTIVATE, TRUE, 0L);
 632             if( GetFocus() == client )
 633                 SendMessageA( client, WM_SETFOCUS, (WPARAM)client, 0L );
 634             else
 635                 SetFocus( client );
 636     }
 637     SendMessageA( child, WM_MDIACTIVATE, (WPARAM)prevActiveWnd, (LPARAM)child );
 638     return TRUE;
 639 }
 640
 641 /* -------------------- MDI client window functions ------------------- */
 642
 643 /**********************************************************************
 644  *                              CreateMDIMenuBitmap
 645  */
 646 static HBITMAP CreateMDIMenuBitmap(void)
 647 {
 648  HDC            hDCSrc  = CreateCompatibleDC(0);
 649  HDC            hDCDest = CreateCompatibleDC(hDCSrc);
 650  HBITMAP        hbClose = LoadBitmapW(0, MAKEINTRESOURCEW(OBM_OLD_CLOSE) );
 651  HBITMAP        hbCopy;
 652  HBITMAP        hobjSrc, hobjDest;
 653
 654  hobjSrc = SelectObject(hDCSrc, hbClose);
 655  hbCopy = CreateCompatibleBitmap(hDCSrc,GetSystemMetrics(SM_CXSIZE),GetSystemMetrics(SM_CYSIZE));
 656  hobjDest = SelectObject(hDCDest, hbCopy);
 657
 658  BitBlt(hDCDest, 0, 0, GetSystemMetrics(SM_CXSIZE), GetSystemMetrics(SM_CYSIZE),
 659           hDCSrc, GetSystemMetrics(SM_CXSIZE), 0, SRCCOPY);
 660
 661  SelectObject(hDCSrc, hobjSrc);
 662  DeleteObject(hbClose);
 663  DeleteDC(hDCSrc);
 664
 665  hobjSrc = SelectObject( hDCDest, GetStockObject(BLACK_PEN) );
 666
 667  MoveToEx( hDCDest, GetSystemMetrics(SM_CXSIZE) - 1, 0, NULL );
 668  LineTo( hDCDest, GetSystemMetrics(SM_CXSIZE) - 1, GetSystemMetrics(SM_CYSIZE) - 1);
 669
 670  SelectObject(hDCDest, hobjSrc );
 671  SelectObject(hDCDest, hobjDest);
 672  DeleteDC(hDCDest);
 673
 674  return hbCopy;
 675 }
 676
 677 /**********************************************************************
 678  *                              MDICascade
 679  */
 680 static LONG MDICascade( HWND client, MDICLIENTINFO *ci )
 681 {
 682     HWND *win_array;
 683     BOOL has_icons = FALSE;
 684     int i, total;
 685
 686     if (IsZoomed(ci->hwndActiveChild))
 687         SendMessageA(client, WM_MDIRESTORE, (WPARAM)ci->hwndActiveChild, 0);
 688
 689     if (ci->nActiveChildren == 0) return 0;
 690
 691     if (!(win_array = WIN_ListChildren( client ))) return 0;
 692
 693     /* remove all the windows we don't want */
 694     for (i = total = 0; win_array[i]; i++)
 695     {
 696         if (!IsWindowVisible( win_array[i] )) continue;
 697         if (GetWindow( win_array[i], GW_OWNER )) continue; /* skip owned windows */
 698         if (IsIconic( win_array[i] ))
 699         {
 700             has_icons = TRUE;
 701             continue;
 702         }
 703         win_array[total++] = win_array[i];
 704     }
 705     win_array[total] = 0;
 706
 707     if (total)
 708     {
 709         INT delta = 0, n = 0, i;
 710         POINT pos[2];
 711         if (has_icons) delta = GetSystemMetrics(SM_CYICONSPACING) + GetSystemMetrics(SM_CYICON);
 712
 713         /* walk the list (backwards) and move windows */
 714         for (i = total - 1; i >= 0; i--)
 715         {
 716             TRACE("move %p to (%ld,%ld) size [%ld,%ld]\n",
 717                   win_array[i], pos[0].x, pos[0].y, pos[1].x, pos[1].y);
 718
 719             MDI_CalcDefaultChildPos(client, n++, pos, delta);
 720             SetWindowPos( win_array[i], 0, pos[0].x, pos[0].y, pos[1].x, pos[1].y,
 721                           SWP_DRAWFRAME | SWP_NOACTIVATE | SWP_NOZORDER);
 722         }
 723     }
 724     HeapFree( GetProcessHeap(), 0, win_array );
 725
 726     if (has_icons) ArrangeIconicWindows( client );
 727     return 0;
 728 }
 729
 730 /**********************************************************************
 731  *                                      MDITile
 732  */
 733 static void MDITile( HWND client, MDICLIENTINFO *ci, WPARAM wParam )
 734 {
 735     HWND *win_array;
 736     int i, total;
 737     BOOL has_icons = FALSE;
 738
 739     if (IsZoomed(ci->hwndActiveChild))
 740         SendMessageA(client, WM_MDIRESTORE, (WPARAM)ci->hwndActiveChild, 0);
 741
 742     if (ci->nActiveChildren == 0) return;
 743
 744     if (!(win_array = WIN_ListChildren( client ))) return;
 745
 746     /* remove all the windows we don't want */
 747     for (i = total = 0; win_array[i]; i++)
 748     {
 749         if (!IsWindowVisible( win_array[i] )) continue;
 750         if (GetWindow( win_array[i], GW_OWNER )) continue; /* skip owned windows (icon titles) */
 751         if (IsIconic( win_array[i] ))
 752         {
 753             has_icons = TRUE;
 754             continue;
 755         }
 756         if ((wParam & MDITILE_SKIPDISABLED) && !IsWindowEnabled( win_array[i] )) continue;
 757         win_array[total++] = win_array[i];
 758     }
 759     win_array[total] = 0;
 760
 761     TRACE("%u windows to tile\n", total);
 762
 763     if (total)
 764     {
 765         HWND *pWnd = win_array;
 766         RECT rect;
 767         int x, y, xsize, ysize;
 768         int rows, columns, r, c, i;
 769
 770         GetClientRect(client,&rect);
 771         rows    = (int) sqrt((double)total);
 772         columns = total / rows;
 773
 774         if( wParam & MDITILE_HORIZONTAL )  /* version >= 3.1 */
 775         {
 776             i = rows;
 777             rows = columns;  /* exchange r and c */
 778             columns = i;
 779         }
 780
 781         if (has_icons)
 782         {
 783             y = rect.bottom - 2 * GetSystemMetrics(SM_CYICONSPACING) - GetSystemMetrics(SM_CYICON);
 784             rect.bottom = ( y - GetSystemMetrics(SM_CYICON) < rect.top )? rect.bottom: y;
 785         }
 786
 787         ysize   = rect.bottom / rows;
 788         xsize   = rect.right  / columns;
 789
 790         for (x = i = 0, c = 1; c <= columns && *pWnd; c++)
 791         {
 792             if (c == columns)
 793             {
 794                 rows  = total - i;
 795                 ysize = rect.bottom / rows;
 796             }
 797
 798             y = 0;
 799             for (r = 1; r <= rows && *pWnd; r++, i++)
 800             {
 801                 SetWindowPos(*pWnd, 0, x, y, xsize, ysize,
 802                              SWP_DRAWFRAME | SWP_NOACTIVATE | SWP_NOZORDER);
 803                 y += ysize;
 804                 pWnd++;
 805             }
 806             x += xsize;
 807         }
 808     }
 809     HeapFree( GetProcessHeap(), 0, win_array );
 810     if (has_icons) ArrangeIconicWindows( client );
 811 }
 812
 813 /* ----------------------- Frame window ---------------------------- */
 814
 815
 816 /**********************************************************************
 817  *                                      MDI_AugmentFrameMenu
 818  */
 819 static BOOL MDI_AugmentFrameMenu( HWND frame, HWND hChild )
 820 {
 821     HMENU menu = GetMenu( frame );
 822     HMENU       hSysPopup = 0;
 823     HBITMAP hSysMenuBitmap = 0;
 824     INT nItems;
 825     UINT iId;
 826     HICON hIcon;
 827
 828     TRACE("frame %p,child %p\n",frame,hChild);
 829
 830     if( !menu ) return 0;
 831
 832     /* if the system buttons already exist do not add them again */
 833     nItems = GetMenuItemCount(menu) - 1;
 834     iId = GetMenuItemID(menu,nItems) ;
 835     if (iId == SC_RESTORE || iId == SC_CLOSE)
 836         return 0;
 837
 838     /* create a copy of sysmenu popup and insert it into frame menu bar */
 839     if (!(hSysPopup = GetSystemMenu(hChild, FALSE)))
 840         return 0;
 841
 842     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 843                    SC_MINIMIZE, (LPSTR)(DWORD)HBMMENU_MBAR_MINIMIZE ) ;
 844     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 845                    SC_RESTORE, (LPSTR)(DWORD)HBMMENU_MBAR_RESTORE );
 846
 847     AppendMenuA(menu,MF_HELP | MF_BITMAP,
 848                    SC_CLOSE, (LPSTR)(DWORD)HBMMENU_MBAR_CLOSE );
 849
 850     /* The system menu is replaced by the child icon */
 851     hIcon = (HICON)GetClassLongW(hChild, GCL_HICONSM);
 852     if (!hIcon)
 853         hIcon = (HICON)GetClassLongW(hChild, GCL_HICON);
 854     if (!hIcon)
 855         hIcon = LoadImageW(0, MAKEINTRESOURCEW(IDI_WINLOGO), IMAGE_ICON, 0, 0, LR_DEFAULTCOLOR);
 856     if (hIcon)
 857     {
 858       HDC hMemDC;
 859       HBITMAP hBitmap, hOldBitmap;
 860       HBRUSH hBrush;
 861       HDC hdc = GetDC(hChild);
 862
 863       if (hdc)
 864       {
 865         int cx, cy;
 866         cx = GetSystemMetrics(SM_CXSMICON);
 867         cy = GetSystemMetrics(SM_CYSMICON);
 868         hMemDC = CreateCompatibleDC(hdc);
 869         hBitmap = CreateCompatibleBitmap(hdc, cx, cy);
 870         hOldBitmap = SelectObject(hMemDC, hBitmap);
 871         SetMapMode(hMemDC, MM_TEXT);
 872         hBrush = CreateSolidBrush(GetSysColor(COLOR_MENU));
 873         DrawIconEx(hMemDC, 0, 0, hIcon, cx, cy, 0, hBrush, DI_NORMAL);
 874         SelectObject (hMemDC, hOldBitmap);
 875         DeleteObject(hBrush);
 876         DeleteDC(hMemDC);
 877         ReleaseDC(hChild, hdc);
 878         hSysMenuBitmap = hBitmap;
 879       }
 880     }
 881
 882     if( !InsertMenuA(menu,0,MF_BYPOSITION | MF_BITMAP | MF_POPUP,
 883                      (UINT_PTR)hSysPopup, (LPSTR)hSysMenuBitmap))
 884     {
 885         TRACE("not inserted\n");
 886         DestroyMenu(hSysPopup);
 887         return 0;
 888     }
 889
 890     EnableMenuItem(hSysPopup, SC_SIZE, MF_BYCOMMAND | MF_GRAYED);
 891     EnableMenuItem(hSysPopup, SC_MOVE, MF_BYCOMMAND | MF_GRAYED);
 892     EnableMenuItem(hSysPopup, SC_MAXIMIZE, MF_BYCOMMAND | MF_GRAYED);
 893     SetMenuDefaultItem(hSysPopup, SC_CLOSE, FALSE);
 894
 895     /* redraw menu */
 896     DrawMenuBar(frame);
 897
 898     return 1;
 899 }
 900
 901 /**********************************************************************
 902  *                                      MDI_RestoreFrameMenu
 903  */
 904 static BOOL MDI_RestoreFrameMenu( HWND frame, HWND hChild )
 905 {
 906     MENUITEMINFOW menuInfo;
 907     HMENU menu = GetMenu( frame );
 908     INT nItems = GetMenuItemCount(menu) - 1;
 909     UINT iId = GetMenuItemID(menu,nItems) ;
 910
 911     TRACE("frame %p,child %p,nIt=%d,iId=%d\n",frame,hChild,nItems,iId);
 912
 913     /* if there is no system buttons then nothing to do */
 914     if(!(iId == SC_RESTORE || iId == SC_CLOSE) )
 915         return 0;
 916
 917     /*
 918      * Remove the system menu, If that menu is the icon of the window
 919      * as it is in win95, we have to delete the bitmap.
 920      */
 921     memset(&menuInfo, 0, sizeof(menuInfo));
 922     menuInfo.cbSize = sizeof(menuInfo);
 923     menuInfo.fMask  = MIIM_DATA | MIIM_TYPE;
 924
 925     GetMenuItemInfoW(menu,
 926                      0,
 927                      TRUE,
 928                      &menuInfo);
 929
 930     RemoveMenu(menu,0,MF_BYPOSITION);
 931
 932     if ( (menuInfo.fType & MFT_BITMAP)           &&
 933          (LOWORD(menuInfo.dwTypeData)!=0)        &&
 934          (LOWORD(menuInfo.dwTypeData)!=HBITMAP_16(hBmpClose)) )
 935     {
 936         DeleteObject(HBITMAP_32(LOWORD(menuInfo.dwTypeData)));
 937     }
 938
 939     /* close */
 940     DeleteMenu(menu,GetMenuItemCount(menu) - 1,MF_BYPOSITION);
 941     /* restore */
 942     DeleteMenu(menu,GetMenuItemCount(menu) - 1,MF_BYPOSITION);
 943     /* minimize */
 944     DeleteMenu(menu,GetMenuItemCount(menu) - 1,MF_BYPOSITION);
 945
 946     DrawMenuBar(frame);
 947
 948     return 1;
 949 }
 950
 951
 952 /**********************************************************************
 953  *                                      MDI_UpdateFrameText
 954  *
 955  * used when child window is maximized/restored
 956  *
 957  * Note: lpTitle can be NULL
 958  */
 959 static void MDI_UpdateFrameText( HWND frame, HWND hClient,
 960                                  BOOL repaint, LPCWSTR lpTitle )
 961 {
 962     WCHAR   lpBuffer[MDI_MAXTITLELENGTH+1];
 963     MDICLIENTINFO *ci = get_client_info( hClient );
 964
 965     TRACE("repaint %i, frameText %s\n", repaint, debugstr_w(lpTitle));
 966
 967     if (!ci) return;
 968
 969     if (!lpTitle && !ci->frameTitle)  /* first time around, get title from the frame window */
 970     {
 971         GetWindowTextW( frame, lpBuffer, sizeof(lpBuffer)/sizeof(WCHAR) );
 972         lpTitle = lpBuffer;
 973     }
 974
 975     /* store new "default" title if lpTitle is not NULL */
 976     if (lpTitle)
 977     {
 978         if (ci->frameTitle) HeapFree( GetProcessHeap(), 0, ci->frameTitle );
 979         if ((ci->frameTitle = HeapAlloc( GetProcessHeap(), 0, (strlenW(lpTitle)+1)*sizeof(WCHAR))))
 980             strcpyW( ci->frameTitle, lpTitle );
 981     }
 982
 983     if (ci->frameTitle)
 984     {
 985         if (IsZoomed(ci->hwndActiveChild) && IsWindowVisible(ci->hwndActiveChild))
 986         {
 987             /* combine frame title and child title if possible */
 988
 989             static const WCHAR lpBracket[]  = {' ','-',' ','[',0};
 990             static const WCHAR lpBracket2[]  = {']',0};
 991             int i_frame_text_length = strlenW(ci->frameTitle);
 992
 993             lstrcpynW( lpBuffer, ci->frameTitle, MDI_MAXTITLELENGTH);
 994
 995             if( i_frame_text_length + 6 < MDI_MAXTITLELENGTH )
 996             {
 997                 strcatW( lpBuffer, lpBracket );
 998                 if (GetWindowTextW( ci->hwndActiveChild, lpBuffer + i_frame_text_length + 4,
 999                                     MDI_MAXTITLELENGTH - i_frame_text_length - 5 ))
1000                     strcatW( lpBuffer, lpBracket2 );
1001                 else
1002                     lpBuffer[i_frame_text_length] = 0;  /* remove bracket */
1003             }
1004         }
1005         else
1006         {
1007             lstrcpynW(lpBuffer, ci->frameTitle, MDI_MAXTITLELENGTH+1 );
1008         }
1009     }
1010     else
1011         lpBuffer[0] = '\0';
1012
1013     DefWindowProcW( frame, WM_SETTEXT, 0, (LPARAM)lpBuffer );
1014     if( repaint )
1015         SetWindowPos( frame, 0,0,0,0,0, SWP_FRAMECHANGED |
1016                       SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE | SWP_NOZORDER );
1017 }
1018
1019
1020 /* ----------------------------- Interface ---------------------------- */
1021
1022
1023 /**********************************************************************
1024  *              MDIClientWndProc_common
1025  */
1026 static LRESULT MDIClientWndProc_common( HWND hwnd, UINT message,
1027                                         WPARAM wParam, LPARAM lParam, BOOL unicode )
1028 {
1029     MDICLIENTINFO *ci;
1030
1031     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1032
1033     if (!(ci = get_client_info( hwnd ))) return 0;
1034
1035     switch (message)
1036     {
1037       case WM_CREATE:
1038       {
1039           /* Since we are using only cs->lpCreateParams, we can safely
1040            * cast to LPCREATESTRUCTA here */
1041           LPCREATESTRUCTA cs = (LPCREATESTRUCTA)lParam;
1042           WND *wndPtr = WIN_GetPtr( hwnd );
1043
1044           wndPtr->flags |= WIN_ISMDICLIENT;
1045
1046         /* Translation layer doesn't know what's in the cs->lpCreateParams
1047          * so we have to keep track of what environment we're in. */
1048
1049         if( wndPtr->flags & WIN_ISWIN32 )
1050         {
1051             LPCLIENTCREATESTRUCT ccs = cs->lpCreateParams;
1052             ci->hWindowMenu     = ccs->hWindowMenu;
1053             ci->idFirstChild    = ccs->idFirstChild;
1054         }
1055         else
1056         {
1057             LPCLIENTCREATESTRUCT16 ccs = MapSL((SEGPTR)cs->lpCreateParams);
1058             ci->hWindowMenu     = HMENU_32(ccs->hWindowMenu);
1059             ci->idFirstChild    = ccs->idFirstChild;
1060         }
1061         WIN_ReleasePtr( wndPtr );
1062
1063         ci->child = NULL;
1064         ci->nActiveChildren     = 0;
1065         ci->nTotalCreated       = 0;
1066         ci->frameTitle          = NULL;
1067         ci->mdiFlags            = 0;
1068         ci->hFrameMenu = GetMenu(cs->hwndParent);
1069
1070         if (!hBmpClose) hBmpClose = CreateMDIMenuBitmap();
1071
1072         TRACE("Client created - hwnd = %p, idFirst = %u\n", hwnd, ci->idFirstChild );
1073         return 0;
1074       }
1075
1076       case WM_DESTROY:
1077       {
1078           if( IsZoomed(ci->hwndActiveChild) )
1079               MDI_RestoreFrameMenu(GetParent(hwnd), ci->hwndActiveChild);
1080
1081           ci->nActiveChildren = 0;
1082           MDI_RefreshMenu(ci);
1083
1084           if (ci->child) HeapFree( GetProcessHeap(), 0, ci->child );
1085           if (ci->frameTitle) HeapFree( GetProcessHeap(), 0, ci->frameTitle );
1086
1087           return 0;
1088       }
1089
1090       case WM_MDIACTIVATE:
1091       {
1092         HWND hwndActive;
1093
1094         hwndActive = ci->hwndActiveChild;
1095
1096         if( hwndActive != (HWND)wParam )
1097             SetWindowPos((HWND)wParam, 0,0,0,0,0, SWP_NOSIZE | SWP_NOMOVE);
1098         return 0;
1099       }
1100
1101       case WM_MDICASCADE:
1102         return MDICascade(hwnd, ci);
1103
1104       case WM_MDICREATE:
1105         if (lParam)
1106         {
1107             if (unicode)
1108             {
1109                 MDICREATESTRUCTW *csW = (MDICREATESTRUCTW *)lParam;
1110                 return (LRESULT)CreateWindowExW(WS_EX_MDICHILD, csW->szClass,
1111                                             csW->szTitle, csW->style,
1112                                             csW->x, csW->y, csW->cx, csW->cy,
1113                                             hwnd, 0, csW->hOwner,
1114                                             (LPVOID)csW->lParam);
1115             }
1116             else
1117             {
1118                 MDICREATESTRUCTA *csA = (MDICREATESTRUCTA *)lParam;
1119                 return (LRESULT)CreateWindowExA(WS_EX_MDICHILD, csA->szClass,
1120                                             csA->szTitle, csA->style,
1121                                             csA->x, csA->y, csA->cx, csA->cy,
1122                                             hwnd, 0, csA->hOwner,
1123                                             (LPVOID)csA->lParam);
1124             }
1125         }
1126         return 0;
1127
1128       case WM_MDIDESTROY:
1129           return MDIDestroyChild( hwnd, ci, WIN_GetFullHandle( (HWND)wParam ), TRUE );
1130
1131       case WM_MDIGETACTIVE:
1132           if (lParam) *(BOOL *)lParam = IsZoomed(ci->hwndActiveChild);
1133           return (LRESULT)ci->hwndActiveChild;
1134
1135       case WM_MDIICONARRANGE:
1136         ci->mdiFlags |= MDIF_NEEDUPDATE;
1137         ArrangeIconicWindows( hwnd );
1138         ci->sbRecalc = SB_BOTH+1;
1139         SendMessageW( hwnd, WM_MDICALCCHILDSCROLL, 0, 0 );
1140         return 0;
1141
1142       case WM_MDIMAXIMIZE:
1143         ShowWindow( (HWND)wParam, SW_MAXIMIZE );
1144         return 0;
1145
1146       case WM_MDINEXT: /* lParam != 0 means previous window */
1147         MDI_SwitchActiveChild( hwnd, WIN_GetFullHandle( (HWND)wParam ), !lParam );
1148         break;
1149
1150       case WM_MDIRESTORE:
1151         SendMessageW( (HWND)wParam, WM_SYSCOMMAND, SC_RESTORE, 0);
1152         return 0;
1153
1154       case WM_MDISETMENU:
1155           return MDISetMenu( hwnd, (HMENU)wParam, (HMENU)lParam );
1156
1157       case WM_MDIREFRESHMENU:
1158           return MDI_RefreshMenu( ci );
1159
1160       case WM_MDITILE:
1161         ci->mdiFlags |= MDIF_NEEDUPDATE;
1162         ShowScrollBar( hwnd, SB_BOTH, FALSE );
1163         MDITile( hwnd, ci, wParam );
1164         ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1165         return 0;
1166
1167       case WM_VSCROLL:
1168       case WM_HSCROLL:
1169         ci->mdiFlags |= MDIF_NEEDUPDATE;
1170         ScrollChildren( hwnd, message, wParam, lParam );
1171         ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1172         return 0;
1173
1174       case WM_SETFOCUS:
1175           if (ci->hwndActiveChild && !IsIconic( ci->hwndActiveChild ))
1176               SetFocus( ci->hwndActiveChild );
1177           return 0;
1178
1179       case WM_NCACTIVATE:
1180         if( ci->hwndActiveChild )
1181             SendMessageW(ci->hwndActiveChild, message, wParam, lParam);
1182         break;
1183
1184       case WM_PARENTNOTIFY:
1185         switch (LOWORD(wParam))
1186         {
1187         case WM_CREATE:
1188             if (GetWindowLongW((HWND)lParam, GWL_EXSTYLE) & WS_EX_MDICHILD)
1189             {
1190                 ci->nTotalCreated++;
1191                 ci->nActiveChildren++;
1192
1193                 if (!ci->child)
1194                     ci->child = HeapAlloc(GetProcessHeap(), 0, sizeof(HWND));
1195                 else
1196                     ci->child = HeapReAlloc(GetProcessHeap(), 0, ci->child, sizeof(HWND) * ci->nActiveChildren);
1197
1198                 ci->child[ci->nActiveChildren - 1] = (HWND)lParam;
1199             }
1200             break;
1201
1202         case WM_LBUTTONDOWN:
1203             {
1204             HWND child;
1205             POINT pt;
1206             pt.x = (short)LOWORD(lParam);
1207             pt.y = (short)HIWORD(lParam);
1208             child = ChildWindowFromPoint(hwnd, pt);
1209
1210             TRACE("notification from %p (%li,%li)\n",child,pt.x,pt.y);
1211
1212             if( child && child != hwnd && child != ci->hwndActiveChild )
1213                 SetWindowPos(child, 0,0,0,0,0, SWP_NOSIZE | SWP_NOMOVE );
1214             break;
1215             }
1216         }
1217         return 0;
1218
1219       case WM_SIZE:
1220         if( IsWindow(ci->hwndActiveChild) && IsZoomed(ci->hwndActiveChild) &&
1221             IsWindowVisible(ci->hwndActiveChild) )
1222         {
1223             RECT        rect;
1224
1225             rect.left = 0;
1226             rect.top = 0;
1227             rect.right = LOWORD(lParam);
1228             rect.bottom = HIWORD(lParam);
1229
1230             AdjustWindowRectEx(&rect, GetWindowLongA(ci->hwndActiveChild, GWL_STYLE),
1231                                0, GetWindowLongA(ci->hwndActiveChild, GWL_EXSTYLE) );
1232             MoveWindow(ci->hwndActiveChild, rect.left, rect.top,
1233                          rect.right - rect.left, rect.bottom - rect.top, 1);
1234         }
1235         else
1236             MDI_PostUpdate(hwnd, ci, SB_BOTH+1);
1237
1238         break;
1239
1240       case WM_MDICALCCHILDSCROLL:
1241         if( (ci->mdiFlags & MDIF_NEEDUPDATE) && ci->sbRecalc )
1242         {
1243             CalcChildScroll(hwnd, ci->sbRecalc-1);
1244             ci->sbRecalc = 0;
1245             ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1246         }
1247         return 0;
1248     }
1249     return unicode ? DefWindowProcW( hwnd, message, wParam, lParam ) :
1250                      DefWindowProcA( hwnd, message, wParam, lParam );
1251 }
1252
1253 /***********************************************************************
1254  *              MDIClientWndProcA
1255  */
1256 static LRESULT WINAPI MDIClientWndProcA( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
1257 {
1258     if (!IsWindow(hwnd)) return 0;
1259     return MDIClientWndProc_common( hwnd, message, wParam, lParam, FALSE );
1260 }
1261
1262 /***********************************************************************
1263  *              MDIClientWndProcW
1264  */
1265 static LRESULT WINAPI MDIClientWndProcW( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
1266 {
1267     if (!IsWindow(hwnd)) return 0;
1268     return MDIClientWndProc_common( hwnd, message, wParam, lParam, TRUE );
1269 }
1270
1271 /***********************************************************************
1272  *              DefFrameProcA (USER32.@)
1273  */
1274 LRESULT WINAPI DefFrameProcA( HWND hwnd, HWND hwndMDIClient,
1275                                 UINT message, WPARAM wParam, LPARAM lParam)
1276 {
1277     if (hwndMDIClient)
1278     {
1279         switch (message)
1280         {
1281         case WM_SETTEXT:
1282             {
1283                 DWORD len = MultiByteToWideChar( CP_ACP, 0, (LPSTR)lParam, -1, NULL, 0 );
1284                 LPWSTR text = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
1285                 MultiByteToWideChar( CP_ACP, 0, (LPSTR)lParam, -1, text, len );
1286                 MDI_UpdateFrameText(hwnd, hwndMDIClient, TRUE, text );
1287                 HeapFree( GetProcessHeap(), 0, text );
1288             }
1289             return 1; /* success. FIXME: check text length */
1290
1291         case WM_COMMAND:
1292         case WM_NCACTIVATE:
1293         case WM_NEXTMENU:
1294         case WM_SETFOCUS:
1295         case WM_SIZE:
1296             return DefFrameProcW( hwnd, hwndMDIClient, message, wParam, lParam );
1297         }
1298     }
1299     return DefWindowProcA(hwnd, message, wParam, lParam);
1300 }
1301
1302
1303 /***********************************************************************
1304  *              DefFrameProcW (USER32.@)
1305  */
1306 LRESULT WINAPI DefFrameProcW( HWND hwnd, HWND hwndMDIClient,
1307                                 UINT message, WPARAM wParam, LPARAM lParam)
1308 {
1309     MDICLIENTINFO *ci = get_client_info( hwndMDIClient );
1310
1311     TRACE("%p %p %04x (%s) %08x %08lx\n", hwnd, hwndMDIClient, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1312
1313     if (ci)
1314     {
1315         switch (message)
1316         {
1317         case WM_COMMAND:
1318             {
1319                 WORD id = LOWORD(wParam);
1320                 /* check for possible syscommands for maximized MDI child */
1321                 if (id <  ci->idFirstChild || id >= ci->idFirstChild + ci->nActiveChildren)
1322                 {
1323                     if( (id - 0xf000) & 0xf00f ) break;
1324                     if( !IsZoomed(ci->hwndActiveChild) ) break;
1325                     switch( id )
1326                     {
1327                     case SC_SIZE:
1328                     case SC_MOVE:
1329                     case SC_MINIMIZE:
1330                     case SC_MAXIMIZE:
1331                     case SC_NEXTWINDOW:
1332                     case SC_PREVWINDOW:
1333                     case SC_CLOSE:
1334                     case SC_RESTORE:
1335                         return SendMessageW( ci->hwndActiveChild, WM_SYSCOMMAND,
1336                                              wParam, lParam);
1337                     }
1338                 }
1339                 else
1340                 {
1341                     HWND childHwnd;
1342                     if (id - ci->idFirstChild == MDI_MOREWINDOWSLIMIT)
1343                         /* User chose "More Windows..." */
1344                         childHwnd = MDI_MoreWindowsDialog(hwndMDIClient);
1345                     else
1346                         /* User chose one of the windows listed in the "Windows" menu */
1347                         childHwnd = MDI_GetChildByID(hwndMDIClient, id, ci);
1348
1349                     if( childHwnd )
1350                         SendMessageW( hwndMDIClient, WM_MDIACTIVATE, (WPARAM)childHwnd, 0 );
1351                 }
1352             }
1353             break;
1354
1355         case WM_NCACTIVATE:
1356             SendMessageW(hwndMDIClient, message, wParam, lParam);
1357             break;
1358
1359         case WM_SETTEXT:
1360             MDI_UpdateFrameText(hwnd, hwndMDIClient, TRUE, (LPWSTR)lParam );
1361             return 1; /* success. FIXME: check text length */
1362
1363         case WM_SETFOCUS:
1364             SetFocus(hwndMDIClient);
1365             break;
1366
1367         case WM_SIZE:
1368             MoveWindow(hwndMDIClient, 0, 0, LOWORD(lParam), HIWORD(lParam), TRUE);
1369             break;
1370
1371         case WM_NEXTMENU:
1372             {
1373                 MDINEXTMENU *next_menu = (MDINEXTMENU *)lParam;
1374
1375                 if (!IsIconic(hwnd) && ci->hwndActiveChild && !IsZoomed(ci->hwndActiveChild))
1376                 {
1377                     /* control menu is between the frame system menu and
1378                      * the first entry of menu bar */
1379                     WND *wndPtr = WIN_GetPtr(hwnd);
1380
1381                     if( (wParam == VK_LEFT && GetMenu(hwnd) == next_menu->hmenuIn) ||
1382                         (wParam == VK_RIGHT && GetSubMenu(wndPtr->hSysMenu, 0) == next_menu->hmenuIn) )
1383                     {
1384                         WIN_ReleasePtr(wndPtr);
1385                         wndPtr = WIN_GetPtr(ci->hwndActiveChild);
1386                         next_menu->hmenuNext = GetSubMenu(wndPtr->hSysMenu, 0);
1387                         next_menu->hwndNext = ci->hwndActiveChild;
1388                     }
1389                     WIN_ReleasePtr(wndPtr);
1390                 }
1391                 return 0;
1392             }
1393         }
1394     }
1395
1396     return DefWindowProcW( hwnd, message, wParam, lParam );
1397 }
1398
1399 /***********************************************************************
1400  *              DefMDIChildProcA (USER32.@)
1401  */
1402 LRESULT WINAPI DefMDIChildProcA( HWND hwnd, UINT message,
1403                                    WPARAM wParam, LPARAM lParam )
1404 {
1405     HWND client = GetParent(hwnd);
1406     MDICLIENTINFO *ci = get_client_info( client );
1407
1408     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1409
1410     hwnd = WIN_GetFullHandle( hwnd );
1411     if (!ci) return DefWindowProcA( hwnd, message, wParam, lParam );
1412
1413     switch (message)
1414     {
1415     case WM_SETTEXT:
1416         DefWindowProcA(hwnd, message, wParam, lParam);
1417         if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild) )
1418             MDI_UpdateFrameText( GetParent(client), client, TRUE, NULL );
1419         return 1; /* success. FIXME: check text length */
1420
1421     case WM_GETMINMAXINFO:
1422     case WM_MENUCHAR:
1423     case WM_CLOSE:
1424     case WM_SETFOCUS:
1425     case WM_CHILDACTIVATE:
1426     case WM_SYSCOMMAND:
1427     case WM_SHOWWINDOW:
1428     case WM_SETVISIBLE:
1429     case WM_SIZE:
1430     case WM_NEXTMENU:
1431     case WM_SYSCHAR:
1432         return DefMDIChildProcW( hwnd, message, wParam, lParam );
1433     }
1434     return DefWindowProcA(hwnd, message, wParam, lParam);
1435 }
1436
1437
1438 /***********************************************************************
1439  *              DefMDIChildProcW (USER32.@)
1440  */
1441 LRESULT WINAPI DefMDIChildProcW( HWND hwnd, UINT message,
1442                                    WPARAM wParam, LPARAM lParam )
1443 {
1444     HWND client = GetParent(hwnd);
1445     MDICLIENTINFO *ci = get_client_info( client );
1446
1447     TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
1448
1449     hwnd = WIN_GetFullHandle( hwnd );
1450     if (!ci) return DefWindowProcW( hwnd, message, wParam, lParam );
1451
1452     switch (message)
1453     {
1454     case WM_SETTEXT:
1455         DefWindowProcW(hwnd, message, wParam, lParam);
1456         if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild) )
1457             MDI_UpdateFrameText( GetParent(client), client, TRUE, NULL );
1458         return 1; /* success. FIXME: check text length */
1459
1460     case WM_GETMINMAXINFO:
1461         MDI_ChildGetMinMaxInfo( client, hwnd, (MINMAXINFO *)lParam );
1462         return 0;
1463
1464     case WM_MENUCHAR:
1465         return 0x00010000; /* MDI children don't have menu bars */
1466
1467     case WM_CLOSE:
1468         SendMessageW( client, WM_MDIDESTROY, (WPARAM)hwnd, 0 );
1469         return 0;
1470
1471     case WM_SETFOCUS:
1472         if (ci->hwndActiveChild != hwnd && IsWindowVisible(hwnd))
1473             MDI_ChildActivate( client, hwnd );
1474         break;
1475
1476     case WM_CHILDACTIVATE:
1477         MDI_ChildActivate( client, hwnd );
1478         return 0;
1479
1480     case WM_SYSCOMMAND:
1481         switch( wParam )
1482         {
1483         case SC_MOVE:
1484             if( ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild))
1485                 return 0;
1486             break;
1487         case SC_RESTORE:
1488         case SC_MINIMIZE:
1489             SetWindowLongW( hwnd, GWL_STYLE,
1490                             GetWindowLongW( hwnd, GWL_STYLE ) | WS_SYSMENU );
1491             break;
1492         case SC_MAXIMIZE:
1493             if (ci->hwndActiveChild == hwnd && IsZoomed(ci->hwndActiveChild))
1494                 return SendMessageW( GetParent(client), message, wParam, lParam);
1495             SetWindowLongW( hwnd, GWL_STYLE,
1496                             GetWindowLongW( hwnd, GWL_STYLE ) & ~WS_SYSMENU );
1497             break;
1498         case SC_NEXTWINDOW:
1499             SendMessageW( client, WM_MDINEXT, 0, 0);
1500             return 0;
1501         case SC_PREVWINDOW:
1502             SendMessageW( client, WM_MDINEXT, 0, 1);
1503             return 0;
1504         }
1505         break;
1506
1507     case WM_SHOWWINDOW:
1508     case WM_SETVISIBLE:
1509         if (IsZoomed(ci->hwndActiveChild)) ci->mdiFlags &= ~MDIF_NEEDUPDATE;
1510         else MDI_PostUpdate(client, ci, SB_BOTH+1);
1511         break;
1512
1513     case WM_SIZE:
1514         if (wParam == SIZE_MAXIMIZED && !IsWindowVisible(hwnd))
1515             wParam = SIZE_RESTORED;
1516
1517         if( hwnd == ci->hwndActiveChild && wParam != SIZE_MAXIMIZED )
1518         {
1519             MDI_RestoreFrameMenu( GetParent(client), hwnd );
1520             MDI_UpdateFrameText( GetParent(client), client, TRUE, NULL );
1521         }
1522
1523         if( wParam == SIZE_MAXIMIZED )
1524         {
1525             TRACE("maximizing child %p\n", hwnd );
1526
1527             MDI_AugmentFrameMenu( GetParent(client), hwnd );
1528             MDI_UpdateFrameText( GetParent(client), client, TRUE, NULL );
1529         }
1530
1531         if( wParam == SIZE_MINIMIZED )
1532         {
1533             HWND switchTo = MDI_GetWindow(ci, hwnd, TRUE, WS_MINIMIZE);
1534
1535             if (switchTo) SendMessageW( switchTo, WM_CHILDACTIVATE, 0, 0);
1536         }
1537         MDI_PostUpdate(client, ci, SB_BOTH+1);
1538         break;
1539
1540     case WM_NEXTMENU:
1541         {
1542             MDINEXTMENU *next_menu = (MDINEXTMENU *)lParam;
1543             HWND parent = GetParent(client);
1544
1545             if( wParam == VK_LEFT )  /* switch to frame system menu */
1546             {
1547                 WND *wndPtr = WIN_GetPtr( parent );
1548                 next_menu->hmenuNext = GetSubMenu( wndPtr->hSysMenu, 0 );
1549                 WIN_ReleasePtr( wndPtr );
1550             }
1551             if( wParam == VK_RIGHT )  /* to frame menu bar */
1552             {
1553                 next_menu->hmenuNext = GetMenu(parent);
1554             }
1555             next_menu->hwndNext = parent;
1556             return 0;
1557         }
1558
1559     case WM_SYSCHAR:
1560         if (wParam == '-')
1561         {
1562             SendMessageW( hwnd, WM_SYSCOMMAND, (WPARAM)SC_KEYMENU, (DWORD)VK_SPACE);
1563             return 0;
1564         }
1565         break;
1566     }
1567     return DefWindowProcW(hwnd, message, wParam, lParam);
1568 }
1569
1570 /**********************************************************************
1571  *              CreateMDIWindowA (USER32.@) Creates a MDI child
1572  *
1573  * RETURNS
1574  *    Success: Handle to created window
1575  *    Failure: NULL
1576  */
1577 HWND WINAPI CreateMDIWindowA(
1578     LPCSTR lpClassName,    /* [in] Pointer to registered child class name */
1579     LPCSTR lpWindowName,   /* [in] Pointer to window name */
1580     DWORD dwStyle,         /* [in] Window style */
1581     INT X,               /* [in] Horizontal position of window */
1582     INT Y,               /* [in] Vertical position of window */
1583     INT nWidth,          /* [in] Width of window */
1584     INT nHeight,         /* [in] Height of window */
1585     HWND hWndParent,     /* [in] Handle to parent window */
1586     HINSTANCE hInstance, /* [in] Handle to application instance */
1587     LPARAM lParam)         /* [in] Application-defined value */
1588 {
1589     TRACE("(%s,%s,%08lx,%d,%d,%d,%d,%p,%p,%08lx)\n",
1590           debugstr_a(lpClassName),debugstr_a(lpWindowName),dwStyle,X,Y,
1591           nWidth,nHeight,hWndParent,hInstance,lParam);
1592
1593     return CreateWindowExA(WS_EX_MDICHILD, lpClassName, lpWindowName,
1594                            dwStyle, X, Y, nWidth, nHeight, hWndParent,
1595                            0, hInstance, (LPVOID)lParam);
1596 }
1597
1598 /***********************************************************************
1599  *              CreateMDIWindowW (USER32.@) Creates a MDI child
1600  *
1601  * RETURNS
1602  *    Success: Handle to created window
1603  *    Failure: NULL
1604  */
1605 HWND WINAPI CreateMDIWindowW(
1606     LPCWSTR lpClassName,    /* [in] Pointer to registered child class name */
1607     LPCWSTR lpWindowName,   /* [in] Pointer to window name */
1608     DWORD dwStyle,         /* [in] Window style */
1609     INT X,               /* [in] Horizontal position of window */
1610     INT Y,               /* [in] Vertical position of window */
1611     INT nWidth,          /* [in] Width of window */
1612     INT nHeight,         /* [in] Height of window */
1613     HWND hWndParent,     /* [in] Handle to parent window */
1614     HINSTANCE hInstance, /* [in] Handle to application instance */
1615     LPARAM lParam)         /* [in] Application-defined value */
1616 {
1617     TRACE("(%s,%s,%08lx,%d,%d,%d,%d,%p,%p,%08lx)\n",
1618           debugstr_w(lpClassName), debugstr_w(lpWindowName), dwStyle, X, Y,
1619           nWidth, nHeight, hWndParent, hInstance, lParam);
1620
1621     return CreateWindowExW(WS_EX_MDICHILD, lpClassName, lpWindowName,
1622                            dwStyle, X, Y, nWidth, nHeight, hWndParent,
1623                            0, hInstance, (LPVOID)lParam);
1624 }
1625
1626 /**********************************************************************
1627  *              TranslateMDISysAccel (USER32.@)
1628  */
1629 BOOL WINAPI TranslateMDISysAccel( HWND hwndClient, LPMSG msg )
1630 {
1631     if (msg->message == WM_KEYDOWN || msg->message == WM_SYSKEYDOWN)
1632     {
1633         MDICLIENTINFO *ci = get_client_info( hwndClient );
1634         WPARAM wParam = 0;
1635
1636         if (!ci || !IsWindowEnabled(ci->hwndActiveChild)) return 0;
1637
1638         /* translate if the Ctrl key is down and Alt not. */
1639
1640         if( (GetKeyState(VK_CONTROL) & 0x8000) && !(GetKeyState(VK_MENU) & 0x8000))
1641         {
1642             switch( msg->wParam )
1643             {
1644             case VK_F6:
1645             case VK_TAB:
1646                 wParam = ( GetKeyState(VK_SHIFT) & 0x8000 ) ? SC_NEXTWINDOW : SC_PREVWINDOW;
1647                 break;
1648             case VK_F4:
1649             case VK_RBUTTON:
1650                 wParam = SC_CLOSE;
1651                 break;
1652             default:
1653                 return 0;
1654             }
1655             TRACE("wParam = %04x\n", wParam);
1656             SendMessageW(ci->hwndActiveChild, WM_SYSCOMMAND, wParam, (LPARAM)msg->wParam);
1657             return 1;
1658         }
1659     }
1660     return 0; /* failure */
1661 }
1662
1663 /***********************************************************************
1664  *              CalcChildScroll (USER32.@)
1665  */
1666 void WINAPI CalcChildScroll( HWND hwnd, INT scroll )
1667 {
1668     SCROLLINFO info;
1669     RECT childRect, clientRect;
1670     HWND *list;
1671
1672     GetClientRect( hwnd, &clientRect );
1673     SetRectEmpty( &childRect );
1674
1675     if ((list = WIN_ListChildren( hwnd )))
1676     {
1677         int i;
1678         for (i = 0; list[i]; i++)
1679         {
1680             DWORD style = GetWindowLongW( list[i], GWL_STYLE );
1681             if (style & WS_MAXIMIZE)
1682             {
1683                 HeapFree( GetProcessHeap(), 0, list );
1684                 ShowScrollBar( hwnd, SB_BOTH, FALSE );
1685                 return;
1686             }
1687             if (style & WS_VISIBLE)
1688             {
1689                 WND *pWnd = WIN_FindWndPtr( list[i] );
1690                 UnionRect( &childRect, &pWnd->rectWindow, &childRect );
1691                 WIN_ReleaseWndPtr( pWnd );
1692             }
1693         }
1694         HeapFree( GetProcessHeap(), 0, list );
1695     }
1696     UnionRect( &childRect, &clientRect, &childRect );
1697
1698     /* set common info values */
1699     info.cbSize = sizeof(info);
1700     info.fMask = SIF_POS | SIF_RANGE;
1701
1702     /* set the specific */
1703     switch( scroll )
1704     {
1705         case SB_BOTH:
1706         case SB_HORZ:
1707                         info.nMin = childRect.left;
1708                         info.nMax = childRect.right - clientRect.right;
1709                         info.nPos = clientRect.left - childRect.left;
1710                         SetScrollInfo(hwnd, scroll, &info, TRUE);
1711                         if (scroll == SB_HORZ) break;
1712                         /* fall through */
1713         case SB_VERT:
1714                         info.nMin = childRect.top;
1715                         info.nMax = childRect.bottom - clientRect.bottom;
1716                         info.nPos = clientRect.top - childRect.top;
1717                         SetScrollInfo(hwnd, scroll, &info, TRUE);
1718                         break;
1719     }
1720 }
1721
1722
1723 /***********************************************************************
1724  *              ScrollChildren (USER32.@)
1725  */
1726 void WINAPI ScrollChildren(HWND hWnd, UINT uMsg, WPARAM wParam,
1727                              LPARAM lParam)
1728 {
1729     INT newPos = -1;
1730     INT curPos, length, minPos, maxPos, shift;
1731     RECT rect;
1732
1733     GetClientRect( hWnd, &rect );
1734
1735     switch(uMsg)
1736     {
1737     case WM_HSCROLL:
1738         GetScrollRange(hWnd,SB_HORZ,&minPos,&maxPos);
1739         curPos = GetScrollPos(hWnd,SB_HORZ);
1740         length = (rect.right - rect.left) / 2;
1741         shift = GetSystemMetrics(SM_CYHSCROLL);
1742         break;
1743     case WM_VSCROLL:
1744         GetScrollRange(hWnd,SB_VERT,&minPos,&maxPos);
1745         curPos = GetScrollPos(hWnd,SB_VERT);
1746         length = (rect.bottom - rect.top) / 2;
1747         shift = GetSystemMetrics(SM_CXVSCROLL);
1748         break;
1749     default:
1750         return;
1751     }
1752
1753     switch( wParam )
1754     {
1755         case SB_LINEUP:
1756                         newPos = curPos - shift;
1757                         break;
1758         case SB_LINEDOWN:
1759                         newPos = curPos + shift;
1760                         break;
1761         case SB_PAGEUP:
1762                         newPos = curPos - length;
1763                         break;
1764         case SB_PAGEDOWN:
1765                         newPos = curPos + length;
1766                         break;
1767
1768         case SB_THUMBPOSITION:
1769                         newPos = LOWORD(lParam);
1770                         break;
1771
1772         case SB_THUMBTRACK:
1773                         return;
1774
1775         case SB_TOP:
1776                         newPos = minPos;
1777                         break;
1778         case SB_BOTTOM:
1779                         newPos = maxPos;
1780                         break;
1781         case SB_ENDSCROLL:
1782                         CalcChildScroll(hWnd,(uMsg == WM_VSCROLL)?SB_VERT:SB_HORZ);
1783                         return;
1784     }
1785
1786     if( newPos > maxPos )
1787         newPos = maxPos;
1788     else
1789         if( newPos < minPos )
1790             newPos = minPos;
1791
1792     SetScrollPos(hWnd, (uMsg == WM_VSCROLL)?SB_VERT:SB_HORZ , newPos, TRUE);
1793
1794     if( uMsg == WM_VSCROLL )
1795         ScrollWindowEx(hWnd ,0 ,curPos - newPos, NULL, NULL, 0, NULL,
1796                         SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
1797     else
1798         ScrollWindowEx(hWnd ,curPos - newPos, 0, NULL, NULL, 0, NULL,
1799                         SW_INVALIDATE | SW_ERASE | SW_SCROLLCHILDREN );
1800 }
1801
1802
1803 /******************************************************************************
1804  *              CascadeWindows (USER32.@) Cascades MDI child windows
1805  *
1806  * RETURNS
1807  *    Success: Number of cascaded windows.
1808  *    Failure: 0
1809  */
1810 WORD WINAPI
1811 CascadeWindows (HWND hwndParent, UINT wFlags, const LPRECT lpRect,
1812                 UINT cKids, const HWND *lpKids)
1813 {
1814     FIXME("(%p,0x%08x,...,%u,...): stub\n", hwndParent, wFlags, cKids);
1815     return 0;
1816 }
1817
1818
1819 /******************************************************************************
1820  *              TileWindows (USER32.@) Tiles MDI child windows
1821  *
1822  * RETURNS
1823  *    Success: Number of tiled windows.
1824  *    Failure: 0
1825  */
1826 WORD WINAPI
1827 TileWindows (HWND hwndParent, UINT wFlags, const LPRECT lpRect,
1828              UINT cKids, const HWND *lpKids)
1829 {
1830     FIXME("(%p,0x%08x,...,%u,...): stub\n", hwndParent, wFlags, cKids);
1831     return 0;
1832 }
1833
1834 /************************************************************************
1835  *              "More Windows..." functionality
1836  */
1837
1838 /*              MDI_MoreWindowsDlgProc
1839  *
1840  *    This function will process the messages sent to the "More Windows..."
1841  *    dialog.
1842  *    Return values:  0    = cancel pressed
1843  *                    HWND = ok pressed or double-click in the list...
1844  *
1845  */
1846
1847 static INT_PTR WINAPI MDI_MoreWindowsDlgProc (HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam)
1848 {
1849     switch (iMsg)
1850     {
1851        case WM_INITDIALOG:
1852        {
1853            UINT widest       = 0;
1854            UINT length;
1855            UINT i;
1856            MDICLIENTINFO *ci = get_client_info( (HWND)lParam );
1857            HWND hListBox = GetDlgItem(hDlg, MDI_IDC_LISTBOX);
1858
1859            for (i = 0; i < ci->nActiveChildren; i++)
1860            {
1861                WCHAR buffer[MDI_MAXTITLELENGTH];
1862
1863                if (!InternalGetWindowText( ci->child[i], buffer, sizeof(buffer)/sizeof(WCHAR) ))
1864                    continue;
1865                SendMessageW(hListBox, LB_ADDSTRING, 0, (LPARAM)buffer );
1866                SendMessageW(hListBox, LB_SETITEMDATA, i, (LPARAM)ci->child[i] );
1867                length = strlenW(buffer);  /* FIXME: should use GetTextExtentPoint */
1868                if (length > widest)
1869                    widest = length;
1870            }
1871            /* Make sure the horizontal scrollbar scrolls ok */
1872            SendMessageW(hListBox, LB_SETHORIZONTALEXTENT, widest * 6, 0);
1873
1874            /* Set the current selection */
1875            SendMessageW(hListBox, LB_SETCURSEL, MDI_MOREWINDOWSLIMIT, 0);
1876            return TRUE;
1877        }
1878
1879        case WM_COMMAND:
1880            switch (LOWORD(wParam))
1881            {
1882                 default:
1883                     if (HIWORD(wParam) != LBN_DBLCLK) break;
1884                     /* fall through */
1885                 case IDOK:
1886                 {
1887                     /*  windows are sorted by menu ID, so we must return the
1888                      *  window associated to the given id
1889                      */
1890                     HWND hListBox     = GetDlgItem(hDlg, MDI_IDC_LISTBOX);
1891                     UINT index        = SendMessageW(hListBox, LB_GETCURSEL, 0, 0);
1892                     LRESULT res = SendMessageW(hListBox, LB_GETITEMDATA, index, 0);
1893                     EndDialog(hDlg, res);
1894                     return TRUE;
1895                 }
1896                 case IDCANCEL:
1897                     EndDialog(hDlg, 0);
1898                     return TRUE;
1899            }
1900            break;
1901     }
1902     return FALSE;
1903 }
1904
1905 /*
1906  *
1907  *                      MDI_MoreWindowsDialog
1908  *
1909  *     Prompts the user with a listbox containing the opened
1910  *     documents. The user can then choose a windows and click
1911  *     on OK to set the current window to the one selected, or
1912  *     CANCEL to cancel. The function returns a handle to the
1913  *     selected window.
1914  */
1915
1916 static HWND MDI_MoreWindowsDialog(HWND hwnd)
1917 {
1918     LPCVOID template;
1919     HRSRC hRes;
1920     HANDLE hDlgTmpl;
1921
1922     hRes = FindResourceA(user32_module, "MDI_MOREWINDOWS", (LPSTR)RT_DIALOG);
1923
1924     if (hRes == 0)
1925         return 0;
1926
1927     hDlgTmpl = LoadResource(user32_module, hRes );
1928
1929     if (hDlgTmpl == 0)
1930         return 0;
1931
1932     template = LockResource( hDlgTmpl );
1933
1934     if (template == 0)
1935         return 0;
1936
1937     return (HWND) DialogBoxIndirectParamA(user32_module,
1938                                           (LPDLGTEMPLATEA) template,
1939                                           hwnd, MDI_MoreWindowsDlgProc, (LPARAM) hwnd);
1940 }