src/msw/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/mdi.cpp
   3 // Purpose:     MDI classes for wxMSW
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_MDI && !defined(__WXUNIVERSAL__)
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/setup.h"
  31     #include "wx/frame.h"
  32     #include "wx/menu.h"
  33     #include "wx/app.h"
  34     #include "wx/utils.h"
  35     #include "wx/dialog.h"
  36     #if wxUSE_STATUSBAR
  37         #include "wx/statusbr.h"
  38     #endif
  39     #include "wx/settings.h"
  40     #include "wx/intl.h"
  41     #include "wx/log.h"
  42 #endif
  43
  44 #include "wx/stockitem.h"
  45 #include "wx/mdi.h"
  46 #include "wx/msw/private.h"
  47
  48 #if wxUSE_STATUSBAR && wxUSE_NATIVE_STATUSBAR
  49     #include "wx/msw/statbr95.h"
  50 #endif
  51
  52 #if wxUSE_TOOLBAR
  53     #include "wx/toolbar.h"
  54 #endif // wxUSE_TOOLBAR
  55
  56 #include <string.h>
  57
  58 // ---------------------------------------------------------------------------
  59 // global variables
  60 // ---------------------------------------------------------------------------
  61
  62 extern wxMenu *wxCurrentPopupMenu;
  63
  64 extern const wxChar *wxMDIFrameClassName;   // from app.cpp
  65 extern const wxChar *wxMDIChildFrameClassName;
  66 extern const wxChar *wxMDIChildFrameClassNameNoRedraw;
  67 extern void wxAssociateWinWithHandle(HWND hWnd, wxWindow *win);
  68 extern void wxRemoveHandleAssociation(wxWindow *win);
  69
  70 static HWND invalidHandle = 0;
  71
  72 // ---------------------------------------------------------------------------
  73 // constants
  74 // ---------------------------------------------------------------------------
  75
  76 static const int IDM_WINDOWTILEHOR  = 4001;
  77 static const int IDM_WINDOWCASCADE = 4002;
  78 static const int IDM_WINDOWICONS = 4003;
  79 static const int IDM_WINDOWNEXT = 4004;
  80 static const int IDM_WINDOWTILEVERT = 4005;
  81 static const int IDM_WINDOWPREV = 4006;
  82
  83 // This range gives a maximum of 500 MDI children. Should be enough :-)
  84 static const int wxFIRST_MDI_CHILD = 4100;
  85 static const int wxLAST_MDI_CHILD = 4600;
  86
  87 // ---------------------------------------------------------------------------
  88 // private functions
  89 // ---------------------------------------------------------------------------
  90
  91 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
  92 // of the parent of win (which is supposed to be the MDI client window)
  93 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
  94
  95 // insert the window menu (subMenu) into menu just before "Help" submenu or at
  96 // the very end if not found
  97 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
  98
  99 // Remove the window menu
 100 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu);
 101
 102 // is this an id of an MDI child?
 103 inline bool IsMdiCommandId(int id)
 104 {
 105     return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
 106 }
 107
 108 // unpack the parameters of WM_MDIACTIVATE message
 109 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
 110                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
 111
 112 // return the HMENU of the MDI menu
 113 static inline HMENU GetMDIWindowMenu(wxMDIParentFrame *frame)
 114 {
 115     wxMenu *menu = frame->GetWindowMenu();
 116     return menu ? GetHmenuOf(menu) : 0;
 117 }
 118
 119 // ===========================================================================
 120 // implementation
 121 // ===========================================================================
 122
 123 // ---------------------------------------------------------------------------
 124 // wxWin macros
 125 // ---------------------------------------------------------------------------
 126
 127 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 128 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 129 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 130
 131 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 132     EVT_SIZE(wxMDIParentFrame::OnSize)
 133     EVT_ICONIZE(wxMDIParentFrame::OnIconized)
 134     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 135 END_EVENT_TABLE()
 136
 137 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 138     EVT_IDLE(wxMDIChildFrame::OnIdle)
 139 END_EVENT_TABLE()
 140
 141 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 142     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 143 END_EVENT_TABLE()
 144
 145 // ===========================================================================
 146 // wxMDIParentFrame: the frame which contains the client window which manages
 147 // the children
 148 // ===========================================================================
 149
 150 wxMDIParentFrame::wxMDIParentFrame()
 151 {
 152     m_clientWindow = NULL;
 153     m_currentChild = NULL;
 154     m_windowMenu = (wxMenu*) NULL;
 155     m_parentFrameActive = true;
 156 }
 157
 158 bool wxMDIParentFrame::Create(wxWindow *parent,
 159                               wxWindowID id,
 160                               const wxString& title,
 161                               const wxPoint& pos,
 162                               const wxSize& size,
 163                               long style,
 164                               const wxString& name)
 165 {
 166   m_clientWindow = NULL;
 167   m_currentChild = NULL;
 168
 169   // this style can be used to prevent a window from having the standard MDI
 170   // "Window" menu
 171   if ( style & wxFRAME_NO_WINDOW_MENU )
 172   {
 173       m_windowMenu = (wxMenu *)NULL;
 174   }
 175   else // normal case: we have the window menu, so construct it
 176   {
 177       m_windowMenu = new wxMenu;
 178
 179       m_windowMenu->Append(IDM_WINDOWCASCADE, _("&Cascade"));
 180       m_windowMenu->Append(IDM_WINDOWTILEHOR, _("Tile &Horizontally"));
 181       m_windowMenu->Append(IDM_WINDOWTILEVERT, _("Tile &Vertically"));
 182       m_windowMenu->AppendSeparator();
 183       m_windowMenu->Append(IDM_WINDOWICONS, _("&Arrange Icons"));
 184       m_windowMenu->Append(IDM_WINDOWNEXT, _("&Next"));
 185       m_windowMenu->Append(IDM_WINDOWPREV, _("&Previous"));
 186   }
 187
 188   m_parentFrameActive = true;
 189
 190   if (!parent)
 191     wxTopLevelWindows.Append(this);
 192
 193   SetName(name);
 194   m_windowStyle = style;
 195
 196   if ( parent )
 197       parent->AddChild(this);
 198
 199   if ( id != wxID_ANY )
 200     m_windowId = id;
 201   else
 202     m_windowId = NewControlId();
 203
 204   WXDWORD exflags;
 205   WXDWORD msflags = MSWGetCreateWindowFlags(&exflags);
 206   msflags &= ~WS_VSCROLL;
 207   msflags &= ~WS_HSCROLL;
 208
 209   if ( !wxWindow::MSWCreate(wxMDIFrameClassName,
 210                             title,
 211                             pos, size,
 212                             msflags,
 213                             exflags) )
 214   {
 215       return false;
 216   }
 217
 218   // unlike (almost?) all other windows, frames are created hidden
 219   m_isShown = false;
 220
 221   return true;
 222 }
 223
 224 wxMDIParentFrame::~wxMDIParentFrame()
 225 {
 226     // see comment in ~wxMDIChildFrame
 227 #if wxUSE_TOOLBAR
 228     m_frameToolBar = NULL;
 229 #endif
 230 #if wxUSE_STATUSBAR
 231     m_frameStatusBar = NULL;
 232 #endif // wxUSE_STATUSBAR
 233
 234     DestroyChildren();
 235
 236     if (m_windowMenu)
 237     {
 238         delete m_windowMenu;
 239         m_windowMenu = (wxMenu*) NULL;
 240     }
 241
 242     // the MDI frame menubar is not automatically deleted by Windows unlike for
 243     // the normal frames
 244     if ( m_hMenu )
 245     {
 246         ::DestroyMenu((HMENU)m_hMenu);
 247         m_hMenu = (WXHMENU)NULL;
 248     }
 249
 250     if ( m_clientWindow )
 251     {
 252         if ( m_clientWindow->MSWGetOldWndProc() )
 253             m_clientWindow->UnsubclassWin();
 254
 255         m_clientWindow->SetHWND(0);
 256         delete m_clientWindow;
 257     }
 258 }
 259
 260 #if wxUSE_MENUS_NATIVE
 261
 262 void wxMDIParentFrame::InternalSetMenuBar()
 263 {
 264     m_parentFrameActive = true;
 265
 266     InsertWindowMenu(GetClientWindow(), m_hMenu, GetMDIWindowMenu(this));
 267 }
 268
 269 #endif // wxUSE_MENUS_NATIVE
 270
 271 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 272 {
 273     if (m_windowMenu)
 274     {
 275         if (GetMenuBar())
 276         {
 277             // Remove old window menu
 278             RemoveWindowMenu(GetClientWindow(), m_hMenu);
 279         }
 280
 281         delete m_windowMenu;
 282         m_windowMenu = (wxMenu*) NULL;
 283     }
 284
 285     if (menu)
 286     {
 287         m_windowMenu = menu;
 288         if (GetMenuBar())
 289         {
 290             InsertWindowMenu(GetClientWindow(), m_hMenu,
 291                              GetHmenuOf(m_windowMenu));
 292         }
 293     }
 294 }
 295
 296 void wxMDIParentFrame::DoMenuUpdates(wxMenu* menu)
 297 {
 298     wxMDIChildFrame *child = GetActiveChild();
 299     if ( child )
 300     {
 301         wxEvtHandler* source = child->GetEventHandler();
 302         wxMenuBar* bar = child->GetMenuBar();
 303
 304         if (menu)
 305         {
 306             menu->UpdateUI(source);
 307         }
 308         else
 309         {
 310             if ( bar != NULL )
 311             {
 312                 int nCount = bar->GetMenuCount();
 313                 for (int n = 0; n < nCount; n++)
 314                     bar->GetMenu(n)->UpdateUI(source);
 315             }
 316         }
 317     }
 318     else
 319     {
 320         wxFrameBase::DoMenuUpdates(menu);
 321     }
 322 }
 323
 324 void wxMDIParentFrame::UpdateClientSize()
 325 {
 326     if ( GetClientWindow() )
 327     {
 328         int width, height;
 329         GetClientSize(&width, &height);
 330
 331         GetClientWindow()->SetSize(0, 0, width, height);
 332     }
 333 }
 334
 335 void wxMDIParentFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 336 {
 337     UpdateClientSize();
 338
 339     // do not call event.Skip() here, it somehow messes up MDI client window
 340 }
 341
 342 void wxMDIParentFrame::OnIconized(wxIconizeEvent& event)
 343 {
 344     event.Skip();
 345
 346     if ( !event.Iconized() )
 347     {
 348         UpdateClientSize();
 349     }
 350 }
 351
 352 // Returns the active MDI child window
 353 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 354 {
 355     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 356                                     WM_MDIGETACTIVE, 0, 0L);
 357     if ( hWnd == 0 )
 358         return NULL;
 359     else
 360         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 361 }
 362
 363 // Create the client window class (don't Create the window, just return a new
 364 // class)
 365 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 366 {
 367     return new wxMDIClientWindow;
 368 }
 369
 370 // Responds to colour changes, and passes event on to children.
 371 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 372 {
 373     if ( m_clientWindow )
 374     {
 375         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 376         m_clientWindow->Refresh();
 377     }
 378
 379     event.Skip();
 380 }
 381
 382 WXHICON wxMDIParentFrame::GetDefaultIcon() const
 383 {
 384     // we don't have any standard icons (any more)
 385     return (WXHICON)0;
 386 }
 387
 388 // ---------------------------------------------------------------------------
 389 // MDI operations
 390 // ---------------------------------------------------------------------------
 391
 392 void wxMDIParentFrame::Cascade()
 393 {
 394     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 395 }
 396
 397 void wxMDIParentFrame::Tile(wxOrientation orient)
 398 {
 399     wxASSERT_MSG( orient == wxHORIZONTAL || orient == wxVERTICAL,
 400                   _T("invalid orientation value") );
 401
 402     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE,
 403                   orient == wxHORIZONTAL ? MDITILE_HORIZONTAL
 404                                          : MDITILE_VERTICAL, 0);
 405 }
 406
 407 void wxMDIParentFrame::ArrangeIcons()
 408 {
 409     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 410 }
 411
 412 void wxMDIParentFrame::ActivateNext()
 413 {
 414     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 415 }
 416
 417 void wxMDIParentFrame::ActivatePrevious()
 418 {
 419     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 420 }
 421
 422 // ---------------------------------------------------------------------------
 423 // the MDI parent frame window proc
 424 // ---------------------------------------------------------------------------
 425
 426 WXLRESULT wxMDIParentFrame::MSWWindowProc(WXUINT message,
 427                                      WXWPARAM wParam,
 428                                      WXLPARAM lParam)
 429 {
 430     WXLRESULT rc = 0;
 431     bool processed = false;
 432
 433     switch ( message )
 434     {
 435         case WM_ACTIVATE:
 436             {
 437                 WXWORD state, minimized;
 438                 WXHWND hwnd;
 439                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 440
 441                 processed = HandleActivate(state, minimized != 0, hwnd);
 442             }
 443             break;
 444
 445         case WM_COMMAND:
 446             {
 447                 WXWORD id, cmd;
 448                 WXHWND hwnd;
 449                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 450
 451                 (void)HandleCommand(id, cmd, hwnd);
 452
 453                 // even if the frame didn't process it, there is no need to try it
 454                 // once again (i.e. call wxFrame::HandleCommand()) - we just did it,
 455                 // so pretend we processed the message anyhow
 456                 processed = true;
 457             }
 458
 459             // always pass this message DefFrameProc(), otherwise MDI menu
 460             // commands (and sys commands - more surprisingly!) won't work
 461             MSWDefWindowProc(message, wParam, lParam);
 462             break;
 463
 464         case WM_CREATE:
 465             m_clientWindow = OnCreateClient();
 466             // Uses own style for client style
 467             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 468             {
 469                 wxLogMessage(_("Failed to create MDI parent frame."));
 470
 471                 rc = -1;
 472             }
 473
 474             processed = true;
 475             break;
 476
 477         case WM_ERASEBKGND:
 478             processed = true;
 479
 480             // we erase background ourselves
 481             rc = true;
 482             break;
 483
 484         case WM_MENUSELECT:
 485             {
 486                 WXWORD item, flags;
 487                 WXHMENU hmenu;
 488                 UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
 489
 490                 if ( m_parentFrameActive )
 491                 {
 492                     processed = HandleMenuSelect(item, flags, hmenu);
 493                 }
 494                 else if (m_currentChild)
 495                 {
 496                     processed = m_currentChild->
 497                         HandleMenuSelect(item, flags, hmenu);
 498                 }
 499             }
 500             break;
 501
 502         case WM_SIZE:
 503             // though we don't (usually) resize the MDI client to exactly fit the
 504             // client area we need to pass this one to DefFrameProc to allow the children to show
 505             break;
 506     }
 507
 508     if ( !processed )
 509         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 510
 511     return rc;
 512 }
 513
 514 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 515 {
 516     bool processed = false;
 517
 518     if ( wxWindow::HandleActivate(state, minimized, activate) )
 519     {
 520         // already processed
 521         processed = true;
 522     }
 523
 524     // If this window is an MDI parent, we must also send an OnActivate message
 525     // to the current child.
 526     if ( (m_currentChild != NULL) &&
 527          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 528     {
 529         wxActivateEvent event(wxEVT_ACTIVATE, true, m_currentChild->GetId());
 530         event.SetEventObject( m_currentChild );
 531         if ( m_currentChild->GetEventHandler()->ProcessEvent(event) )
 532             processed = true;
 533     }
 534
 535     return processed;
 536 }
 537
 538 bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 539 {
 540     // In case it's e.g. a toolbar.
 541     if ( hwnd )
 542     {
 543         wxWindow *win = wxFindWinFromHandle(hwnd);
 544         if ( win )
 545             return win->MSWCommand(cmd, id);
 546     }
 547
 548     // is it one of standard MDI commands?
 549     WXWPARAM wParam = 0;
 550     WXLPARAM lParam = 0;
 551     int msg;
 552     switch ( id )
 553     {
 554         case IDM_WINDOWCASCADE:
 555             msg = WM_MDICASCADE;
 556             wParam = MDITILE_SKIPDISABLED;
 557             break;
 558
 559         case IDM_WINDOWTILEHOR:
 560             wParam |= MDITILE_HORIZONTAL;
 561             // fall through
 562
 563         case IDM_WINDOWTILEVERT:
 564             if ( !wParam )
 565                 wParam = MDITILE_VERTICAL;
 566             msg = WM_MDITILE;
 567             wParam |= MDITILE_SKIPDISABLED;
 568             break;
 569
 570         case IDM_WINDOWICONS:
 571             msg = WM_MDIICONARRANGE;
 572             break;
 573
 574         case IDM_WINDOWNEXT:
 575             msg = WM_MDINEXT;
 576             lParam = 0;         // next child
 577             break;
 578
 579         case IDM_WINDOWPREV:
 580             msg = WM_MDINEXT;
 581             lParam = 1;         // previous child
 582             break;
 583
 584         default:
 585             msg = 0;
 586     }
 587
 588     if ( msg )
 589     {
 590         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, lParam);
 591
 592         return true;
 593     }
 594
 595     // FIXME VZ: what does this test do??
 596     if (id >= 0xF000)
 597     {
 598         return false; // Get WndProc to call default proc
 599     }
 600
 601     if ( IsMdiCommandId(id) )
 602     {
 603         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 604         while ( node )
 605         {
 606             wxWindow *child = node->GetData();
 607             if ( child->GetHWND() )
 608             {
 609                 long childId = wxGetWindowId(child->GetHWND());
 610                 if (childId == (long)id)
 611                 {
 612                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 613                                    WM_MDIACTIVATE,
 614                                    (WPARAM)child->GetHWND(), 0);
 615                     return true;
 616                 }
 617             }
 618             node = node->GetNext();
 619         }
 620     }
 621     else if ( m_parentFrameActive )
 622     {
 623         return ProcessCommand(id);
 624     }
 625     else if ( m_currentChild )
 626     {
 627         return m_currentChild->HandleCommand(id, cmd, hwnd);
 628     }
 629     else
 630     {
 631         // this shouldn't happen because it means that our messages are being
 632         // lost (they're not sent to the parent frame nor to the children)
 633         wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
 634     }
 635
 636     return false;
 637 }
 638
 639 WXLRESULT wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 640                                         WXWPARAM wParam,
 641                                         WXLPARAM lParam)
 642 {
 643     WXHWND clientWnd;
 644     if ( GetClientWindow() )
 645         clientWnd = GetClientWindow()->GetHWND();
 646     else
 647         clientWnd = 0;
 648
 649     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 650 }
 651
 652 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 653 {
 654     MSG *pMsg = (MSG *)msg;
 655
 656     // first let the current child get it
 657     if ( m_currentChild && m_currentChild->GetHWND() &&
 658          m_currentChild->MSWTranslateMessage(msg) )
 659     {
 660         return true;
 661     }
 662
 663     // then try out accel table (will also check the menu accels)
 664     if ( wxFrame::MSWTranslateMessage(msg) )
 665     {
 666         return true;
 667     }
 668
 669     // finally, check for MDI specific built in accel keys
 670     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 671     {
 672         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 673             return true;
 674     }
 675
 676     return false;
 677 }
 678
 679 // ===========================================================================
 680 // wxMDIChildFrame
 681 // ===========================================================================
 682
 683 void wxMDIChildFrame::Init()
 684 {
 685     m_needsResize = true;
 686     m_needsInitialShow = true;
 687 }
 688
 689 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 690                              wxWindowID id,
 691                              const wxString& title,
 692                              const wxPoint& pos,
 693                              const wxSize& size,
 694                              long style,
 695                              const wxString& name)
 696 {
 697   SetName(name);
 698
 699   if ( id != wxID_ANY )
 700     m_windowId = id;
 701   else
 702     m_windowId = (int)NewControlId();
 703
 704   if ( parent )
 705   {
 706       parent->AddChild(this);
 707   }
 708
 709   int x = pos.x;
 710   int y = pos.y;
 711   int width = size.x;
 712   int height = size.y;
 713
 714   MDICREATESTRUCT mcs;
 715
 716   mcs.szClass = style & wxFULL_REPAINT_ON_RESIZE
 717                     ? wxMDIChildFrameClassName
 718                     : wxMDIChildFrameClassNameNoRedraw;
 719   mcs.szTitle = title;
 720   mcs.hOwner = wxGetInstance();
 721   if (x != wxDefaultCoord)
 722       mcs.x = x;
 723   else
 724       mcs.x = CW_USEDEFAULT;
 725
 726   if (y != wxDefaultCoord)
 727       mcs.y = y;
 728   else
 729       mcs.y = CW_USEDEFAULT;
 730
 731   if (width != wxDefaultCoord)
 732       mcs.cx = width;
 733   else
 734       mcs.cx = CW_USEDEFAULT;
 735
 736   if (height != wxDefaultCoord)
 737       mcs.cy = height;
 738   else
 739       mcs.cy = CW_USEDEFAULT;
 740
 741   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
 742   if (style & wxMINIMIZE_BOX)
 743     msflags |= WS_MINIMIZEBOX;
 744   if (style & wxMAXIMIZE_BOX)
 745     msflags |= WS_MAXIMIZEBOX;
 746   if (style & wxTHICK_FRAME)
 747     msflags |= WS_THICKFRAME;
 748   if (style & wxSYSTEM_MENU)
 749     msflags |= WS_SYSMENU;
 750   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 751     msflags |= WS_MINIMIZE;
 752   if (style & wxMAXIMIZE)
 753     msflags |= WS_MAXIMIZE;
 754   if (style & wxCAPTION)
 755     msflags |= WS_CAPTION;
 756
 757   mcs.style = msflags;
 758
 759   mcs.lParam = 0;
 760
 761   wxWindowCreationHook hook(this);
 762
 763   m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 764                                  WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 765
 766   wxAssociateWinWithHandle((HWND) GetHWND(), this);
 767
 768   return true;
 769 }
 770
 771 wxMDIChildFrame::~wxMDIChildFrame()
 772 {
 773     // will be destroyed by DestroyChildren() but reset them before calling it
 774     // to avoid using dangling pointers if a callback comes in the meanwhile
 775 #if wxUSE_TOOLBAR
 776     m_frameToolBar = NULL;
 777 #endif
 778 #if wxUSE_STATUSBAR
 779     m_frameStatusBar = NULL;
 780 #endif // wxUSE_STATUSBAR
 781
 782     DestroyChildren();
 783
 784     RemoveWindowMenu(NULL, m_hMenu);
 785
 786     MSWDestroyWindow();
 787 }
 788
 789 bool wxMDIChildFrame::Show(bool show)
 790 {
 791     m_needsInitialShow = false;
 792     return wxFrame::Show(show);
 793 }
 794
 795 // Set the client size (i.e. leave the calculation of borders etc.
 796 // to wxWidgets)
 797 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 798 {
 799   HWND hWnd = GetHwnd();
 800
 801   RECT rect;
 802   ::GetClientRect(hWnd, &rect);
 803
 804   RECT rect2;
 805   GetWindowRect(hWnd, &rect2);
 806
 807   // Find the difference between the entire window (title bar and all)
 808   // and the client area; add this to the new client size to move the
 809   // window
 810   int actual_width = rect2.right - rect2.left - rect.right + width;
 811   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 812
 813 #if wxUSE_STATUSBAR
 814   if (GetStatusBar() && GetStatusBar()->IsShown())
 815   {
 816     int sx, sy;
 817     GetStatusBar()->GetSize(&sx, &sy);
 818     actual_height += sy;
 819   }
 820 #endif // wxUSE_STATUSBAR
 821
 822   POINT point;
 823   point.x = rect2.left;
 824   point.y = rect2.top;
 825
 826   // If there's an MDI parent, must subtract the parent's top left corner
 827   // since MoveWindow moves relative to the parent
 828   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 829   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 830
 831   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)true);
 832
 833   wxSize size(width, height);
 834   wxSizeEvent event(size, m_windowId);
 835   event.SetEventObject( this );
 836   GetEventHandler()->ProcessEvent(event);
 837 }
 838
 839 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 840 {
 841   RECT rect;
 842   GetWindowRect(GetHwnd(), &rect);
 843   POINT point;
 844   point.x = rect.left;
 845   point.y = rect.top;
 846
 847   // Since we now have the absolute screen coords,
 848   // if there's a parent we must subtract its top left corner
 849   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 850   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 851
 852   if (x)
 853       *x = point.x;
 854   if (y)
 855       *y = point.y;
 856 }
 857
 858 void wxMDIChildFrame::InternalSetMenuBar()
 859 {
 860     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 861
 862     InsertWindowMenu(parent->GetClientWindow(),
 863                      m_hMenu, GetMDIWindowMenu(parent));
 864
 865     parent->m_parentFrameActive = false;
 866 }
 867
 868 void wxMDIChildFrame::DetachMenuBar()
 869 {
 870     RemoveWindowMenu(NULL, m_hMenu);
 871     wxFrame::DetachMenuBar();
 872 }
 873
 874 WXHICON wxMDIChildFrame::GetDefaultIcon() const
 875 {
 876     // we don't have any standard icons (any more)
 877     return (WXHICON)0;
 878 }
 879
 880 // ---------------------------------------------------------------------------
 881 // MDI operations
 882 // ---------------------------------------------------------------------------
 883
 884 void wxMDIChildFrame::Maximize(bool maximize)
 885 {
 886     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 887     if ( parent && parent->GetClientWindow() )
 888     {
 889         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 890                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
 891                       (WPARAM)GetHwnd(), 0);
 892     }
 893 }
 894
 895 void wxMDIChildFrame::Restore()
 896 {
 897     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 898     if ( parent && parent->GetClientWindow() )
 899     {
 900         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
 901                       (WPARAM) GetHwnd(), 0);
 902     }
 903 }
 904
 905 void wxMDIChildFrame::Activate()
 906 {
 907     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 908     if ( parent && parent->GetClientWindow() )
 909     {
 910         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
 911                       (WPARAM) GetHwnd(), 0);
 912     }
 913 }
 914
 915 // ---------------------------------------------------------------------------
 916 // MDI window proc and message handlers
 917 // ---------------------------------------------------------------------------
 918
 919 WXLRESULT wxMDIChildFrame::MSWWindowProc(WXUINT message,
 920                                     WXWPARAM wParam,
 921                                     WXLPARAM lParam)
 922 {
 923     WXLRESULT rc = 0;
 924     bool processed = false;
 925
 926     switch ( message )
 927     {
 928         case WM_COMMAND:
 929             {
 930                 WORD id, cmd;
 931                 WXHWND hwnd;
 932                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 933                               &id, &hwnd, &cmd);
 934
 935                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 936             }
 937             break;
 938
 939         case WM_GETMINMAXINFO:
 940             processed = HandleGetMinMaxInfo((MINMAXINFO *)lParam);
 941             break;
 942
 943         case WM_MDIACTIVATE:
 944             {
 945                 WXWORD act;
 946                 WXHWND hwndAct, hwndDeact;
 947                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
 948
 949                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
 950             }
 951             // fall through
 952
 953         case WM_MOVE:
 954             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
 955             // scrollbars if necessary
 956
 957             // fall through
 958
 959         case WM_SIZE:
 960             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
 961             // things happen
 962             MSWDefWindowProc(message, wParam, lParam);
 963             break;
 964
 965         case WM_SYSCOMMAND:
 966             // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
 967             // the message (the base class version does not)
 968             return MSWDefWindowProc(message, wParam, lParam);
 969
 970         case WM_WINDOWPOSCHANGING:
 971             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
 972             break;
 973     }
 974
 975     if ( !processed )
 976         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 977
 978     return rc;
 979 }
 980
 981 bool wxMDIChildFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 982 {
 983     // In case it's e.g. a toolbar.
 984     if ( hwnd )
 985     {
 986         wxWindow *win = wxFindWinFromHandle(hwnd);
 987         if (win)
 988             return win->MSWCommand(cmd, id);
 989     }
 990
 991     if (wxCurrentPopupMenu)
 992     {
 993         wxMenu *popupMenu = wxCurrentPopupMenu;
 994         wxCurrentPopupMenu = NULL;
 995         if (popupMenu->MSWCommand(cmd, id))
 996             return true;
 997     }
 998
 999     bool processed;
1000     if (GetMenuBar() && GetMenuBar()->FindItem(id))
1001     {
1002         processed = ProcessCommand(id);
1003     }
1004     else
1005     {
1006         processed = false;
1007     }
1008
1009     return processed;
1010 }
1011
1012 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
1013                                         WXHWND hwndAct,
1014                                         WXHWND hwndDeact)
1015 {
1016     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1017
1018     HMENU menuToSet = 0;
1019
1020     bool activated;
1021
1022     if ( m_hWnd == hwndAct )
1023     {
1024         activated = true;
1025         parent->m_currentChild = this;
1026
1027         HMENU child_menu = (HMENU)GetWinMenu();
1028         if ( child_menu )
1029         {
1030             parent->m_parentFrameActive = false;
1031
1032             menuToSet = child_menu;
1033         }
1034     }
1035     else if ( m_hWnd == hwndDeact )
1036     {
1037         wxASSERT_MSG( parent->m_currentChild == this,
1038                       wxT("can't deactivate MDI child which wasn't active!") );
1039
1040         activated = false;
1041         parent->m_currentChild = NULL;
1042
1043         HMENU parent_menu = (HMENU)parent->GetWinMenu();
1044
1045         // activate the the parent menu only when there is no other child
1046         // that has been activated
1047         if ( parent_menu && !hwndAct )
1048         {
1049             parent->m_parentFrameActive = true;
1050
1051             menuToSet = parent_menu;
1052         }
1053     }
1054     else
1055     {
1056         // we have nothing to do with it
1057         return false;
1058     }
1059
1060     if ( menuToSet )
1061     {
1062         MDISetMenu(parent->GetClientWindow(),
1063                    menuToSet, GetMDIWindowMenu(parent));
1064     }
1065
1066     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
1067     event.SetEventObject( this );
1068
1069     ResetWindowStyle((void *)NULL);
1070
1071     return GetEventHandler()->ProcessEvent(event);
1072 }
1073
1074 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
1075 {
1076     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1077 #if defined(__WIN95__)
1078     if (!(lpPos->flags & SWP_NOSIZE))
1079     {
1080         RECT rectClient;
1081         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1082         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1083         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1084         {
1085             ::AdjustWindowRectEx(&rectClient, dwStyle, false, dwExStyle);
1086             lpPos->x = rectClient.left;
1087             lpPos->y = rectClient.top;
1088             lpPos->cx = rectClient.right - rectClient.left;
1089             lpPos->cy = rectClient.bottom - rectClient.top;
1090         }
1091 #if wxUSE_TOOLBAR
1092         wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1093         if (pFrameWnd && pFrameWnd->GetToolBar() && pFrameWnd->GetToolBar()->IsShown())
1094         {
1095             pFrameWnd->GetToolBar()->Refresh();
1096         }
1097 #endif
1098     }
1099 #endif // Win95
1100
1101     return false;
1102 }
1103
1104 bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo)
1105 {
1106     MINMAXINFO *info = (MINMAXINFO *)mmInfo;
1107
1108     // let the default window proc calculate the size of MDI children
1109     // frames because it is based on the size of the MDI client window,
1110     // not on the values specified in wxWindow m_max variables
1111     bool processed = MSWDefWindowProc(WM_GETMINMAXINFO, 0, (LPARAM)mmInfo) != 0;
1112
1113     int minWidth = GetMinWidth(),
1114         minHeight = GetMinHeight();
1115
1116     // but allow GetSizeHints() to set the min size
1117     if ( minWidth != -1 )
1118     {
1119         info->ptMinTrackSize.x = minWidth;
1120
1121         processed = true;
1122     }
1123
1124     if ( minHeight != -1 )
1125     {
1126         info->ptMinTrackSize.y = minHeight;
1127
1128         processed = true;
1129     }
1130
1131     return processed;
1132 }
1133
1134 // ---------------------------------------------------------------------------
1135 // MDI specific message translation/preprocessing
1136 // ---------------------------------------------------------------------------
1137
1138 WXLRESULT wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
1139 {
1140     return DefMDIChildProc(GetHwnd(),
1141                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1142 }
1143
1144 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1145 {
1146     return wxFrame::MSWTranslateMessage(msg);
1147 }
1148
1149 // ---------------------------------------------------------------------------
1150 // misc
1151 // ---------------------------------------------------------------------------
1152
1153 void wxMDIChildFrame::MSWDestroyWindow()
1154 {
1155     invalidHandle = GetHwnd();
1156
1157     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1158
1159     // Must make sure this handle is invalidated (set to NULL) since all sorts
1160     // of things could happen after the child client is destroyed, but before
1161     // the wxFrame is destroyed.
1162
1163     HWND oldHandle = (HWND)GetHWND();
1164     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1165                 (WPARAM)oldHandle, 0);
1166
1167     if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
1168         ResetWindowStyle((void*) NULL);
1169
1170     invalidHandle = 0;
1171
1172     if (m_hMenu)
1173     {
1174         ::DestroyMenu((HMENU) m_hMenu);
1175         m_hMenu = 0;
1176     }
1177     wxRemoveHandleAssociation(this);
1178     m_hWnd = 0;
1179 }
1180
1181 // Change the client window's extended style so we don't get a client edge
1182 // style when a child is maximised (a double border looks silly.)
1183 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1184 {
1185 #if defined(__WIN95__)
1186     RECT *rect = (RECT *)vrect;
1187     wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1188     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1189     if (!pChild || (pChild == this))
1190     {
1191         HWND hwndClient = GetWinHwnd(pFrameWnd->GetClientWindow());
1192         DWORD dwStyle = ::GetWindowLong(hwndClient, GWL_EXSTYLE);
1193
1194         // we want to test whether there is a maximized child, so just set
1195         // dwThisStyle to 0 if there is no child at all
1196         DWORD dwThisStyle = pChild
1197             ? ::GetWindowLong(GetWinHwnd(pChild), GWL_STYLE) : 0;
1198         DWORD dwNewStyle = dwStyle;
1199         if ( dwThisStyle & WS_MAXIMIZE )
1200             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1201         else
1202             dwNewStyle |= WS_EX_CLIENTEDGE;
1203
1204         if (dwStyle != dwNewStyle)
1205         {
1206             // force update of everything
1207             ::RedrawWindow(hwndClient, NULL, NULL,
1208                            RDW_INVALIDATE | RDW_ALLCHILDREN);
1209             ::SetWindowLong(hwndClient, GWL_EXSTYLE, dwNewStyle);
1210             ::SetWindowPos(hwndClient, NULL, 0, 0, 0, 0,
1211                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1212                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1213                            SWP_NOCOPYBITS);
1214             if (rect)
1215                 ::GetClientRect(hwndClient, rect);
1216
1217             return true;
1218         }
1219     }
1220 #endif // Win95
1221
1222     return false;
1223 }
1224
1225 // ===========================================================================
1226 // wxMDIClientWindow: the window of predefined (by Windows) class which
1227 // contains the child frames
1228 // ===========================================================================
1229
1230 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1231 {
1232     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
1233
1234     CLIENTCREATESTRUCT ccs;
1235     m_windowStyle = style;
1236     m_parent = parent;
1237
1238     ccs.hWindowMenu = GetMDIWindowMenu(parent);
1239     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1240
1241     DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD |
1242                     WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
1243
1244     if ( style & wxHSCROLL )
1245         msStyle |= WS_HSCROLL;
1246     if ( style & wxVSCROLL )
1247         msStyle |= WS_VSCROLL;
1248
1249 #if defined(__WIN95__)
1250     DWORD exStyle = WS_EX_CLIENTEDGE;
1251 #else
1252     DWORD exStyle = 0;
1253 #endif
1254
1255     wxWindowCreationHook hook(this);
1256     m_hWnd = (WXHWND)::CreateWindowEx
1257                        (
1258                         exStyle,
1259                         wxT("MDICLIENT"),
1260                         NULL,
1261                         msStyle,
1262                         0, 0, 0, 0,
1263                         GetWinHwnd(parent),
1264                         NULL,
1265                         wxGetInstance(),
1266                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1267     if ( !m_hWnd )
1268     {
1269         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1270
1271         return false;
1272     }
1273
1274     SubclassWin(m_hWnd);
1275
1276     return true;
1277 }
1278
1279 // Explicitly call default scroll behaviour
1280 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1281 {
1282     // Note: for client windows, the scroll position is not set in
1283     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1284     // scroll position we're at.
1285     // This makes it hard to paint patterns or bitmaps in the background,
1286     // and have the client area scrollable as well.
1287
1288     if ( event.GetOrientation() == wxHORIZONTAL )
1289         m_scrollX = event.GetPosition(); // Always returns zero!
1290     else
1291         m_scrollY = event.GetPosition(); // Always returns zero!
1292
1293     event.Skip();
1294 }
1295
1296 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1297 {
1298     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1299     // client area, you can end up with a non-refreshed portion in the client window
1300     // (see OGL studio sample). So check if the position is changed and if so,
1301     // redraw the MDI child frames.
1302
1303     const wxPoint oldPos = GetPosition();
1304
1305     wxWindow::DoSetSize(x, y, width, height, sizeFlags | wxSIZE_FORCE);
1306
1307     const wxPoint newPos = GetPosition();
1308
1309     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1310     {
1311         if (GetParent())
1312         {
1313             wxWindowList::compatibility_iterator node = GetParent()->GetChildren().GetFirst();
1314             while (node)
1315             {
1316                 wxWindow *child = node->GetData();
1317                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1318                 {
1319                    ::RedrawWindow(GetHwndOf(child),
1320                                   NULL,
1321                                   NULL,
1322                                   RDW_FRAME |
1323                                   RDW_ALLCHILDREN |
1324                                   RDW_INVALIDATE);
1325                 }
1326                 node = node->GetNext();
1327             }
1328         }
1329     }
1330 }
1331
1332 void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
1333 {
1334     // wxMSW prior to 2.5.3 created MDI child frames as visible, which resulted
1335     // in flicker e.g. when the frame contained controls with non-trivial
1336     // layout. Since 2.5.3, the frame is created hidden as all other top level
1337     // windows. In order to maintain backward compatibility, the frame is shown
1338     // in OnIdle, unless Show(false) was called by the programmer before.
1339     if ( m_needsInitialShow )
1340     {
1341         Show(true);
1342     }
1343
1344     // MDI child frames get their WM_SIZE when they're constructed but at this
1345     // moment they don't have any children yet so all child windows will be
1346     // positioned incorrectly when they are added later - to fix this, we
1347     // generate an artificial size event here
1348     if ( m_needsResize )
1349     {
1350         m_needsResize = false; // avoid any possibility of recursion
1351
1352         SendSizeEvent();
1353     }
1354
1355     event.Skip();
1356 }
1357
1358 // ---------------------------------------------------------------------------
1359 // non member functions
1360 // ---------------------------------------------------------------------------
1361
1362 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1363 {
1364     ::SendMessage(GetWinHwnd(win), WM_MDISETMENU,
1365 #ifdef __WIN32__
1366                   (WPARAM)hmenuFrame, (LPARAM)hmenuWindow
1367 #else
1368                   0, MAKELPARAM(hmenuFrame, hmenuWindow)
1369 #endif
1370                  );
1371
1372     // update menu bar of the parent window
1373     wxWindow *parent = win->GetParent();
1374     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1375
1376     ::SendMessage(GetWinHwnd(win), WM_MDIREFRESHMENU, 0, 0L);
1377
1378     ::DrawMenuBar(GetWinHwnd(parent));
1379 }
1380
1381 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
1382 {
1383     // Try to insert Window menu in front of Help, otherwise append it.
1384     HMENU hmenu = (HMENU)menu;
1385
1386     if (subMenu)
1387     {
1388         int N = GetMenuItemCount(hmenu);
1389         bool success = false;
1390         for ( int i = 0; i < N; i++ )
1391         {
1392             wxChar buf[256];
1393             int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1394             if ( chars == 0 )
1395             {
1396                 wxLogLastError(wxT("GetMenuString"));
1397
1398                 continue;
1399             }
1400
1401             wxString strBuf(buf);
1402             if ( wxStripMenuCodes(strBuf) == wxGetStockLabel(wxID_HELP,false) )
1403             {
1404                 success = true;
1405                 ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1406                              (UINT)subMenu, _("&Window"));
1407                 break;
1408             }
1409         }
1410
1411         if ( !success )
1412         {
1413             ::AppendMenu(hmenu, MF_POPUP, (UINT)subMenu, _("&Window"));
1414         }
1415     }
1416
1417     MDISetMenu(win, hmenu, subMenu);
1418 }
1419
1420 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu)
1421 {
1422     HMENU hMenu = (HMENU)menu;
1423
1424     if ( hMenu )
1425     {
1426         wxChar buf[1024];
1427
1428         int N = ::GetMenuItemCount(hMenu);
1429         for ( int i = 0; i < N; i++ )
1430         {
1431             if ( !::GetMenuString(hMenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) )
1432             {
1433                 // Ignore successful read of menu string with length 0 which
1434                 // occurs, for example, for a maximized MDI childs system menu
1435                 if ( ::GetLastError() != 0 )
1436                 {
1437                     wxLogLastError(wxT("GetMenuString"));
1438                 }
1439
1440                 continue;
1441             }
1442
1443             if ( wxStrcmp(buf, _("&Window")) == 0 )
1444             {
1445                 if ( !::RemoveMenu(hMenu, i, MF_BYPOSITION) )
1446                 {
1447                     wxLogLastError(wxT("RemoveMenu"));
1448                 }
1449
1450                 break;
1451             }
1452         }
1453     }
1454
1455     if ( win )
1456     {
1457         // we don't change the windows menu, but we update the main one
1458         MDISetMenu(win, hMenu, NULL);
1459     }
1460 }
1461
1462 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1463                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1464 {
1465     *activate = true;
1466     *hwndAct = (WXHWND)lParam;
1467     *hwndDeact = (WXHWND)wParam;
1468 }
1469
1470 #endif // wxUSE_MDI && !defined(__WXUNIVERSAL__)
1471