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 #include "wx/mdi.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/menu.h"
  34     #include "wx/app.h"
  35     #include "wx/utils.h"
  36     #include "wx/dialog.h"
  37     #include "wx/statusbr.h"
  38     #include "wx/settings.h"
  39     #include "wx/intl.h"
  40     #include "wx/log.h"
  41     #include "wx/toolbar.h"
  42 #endif
  43
  44 #include "wx/stockitem.h"
  45 #include "wx/msw/private.h"
  46
  47 #if wxUSE_STATUSBAR && wxUSE_NATIVE_STATUSBAR
  48     #include "wx/msw/statbr95.h"
  49 #endif
  50
  51 #include <string.h>
  52
  53 // ---------------------------------------------------------------------------
  54 // global variables
  55 // ---------------------------------------------------------------------------
  56
  57 extern wxMenu *wxCurrentPopupMenu;
  58
  59 extern const wxChar *wxMDIFrameClassName;   // from app.cpp
  60 extern const wxChar *wxMDIChildFrameClassName;
  61 extern const wxChar *wxMDIChildFrameClassNameNoRedraw;
  62 extern void wxRemoveHandleAssociation(wxWindow *win);
  63
  64 // ---------------------------------------------------------------------------
  65 // constants
  66 // ---------------------------------------------------------------------------
  67
  68 static const int IDM_WINDOWTILEHOR  = 4001;
  69 static const int IDM_WINDOWCASCADE = 4002;
  70 static const int IDM_WINDOWICONS = 4003;
  71 static const int IDM_WINDOWNEXT = 4004;
  72 static const int IDM_WINDOWTILEVERT = 4005;
  73 static const int IDM_WINDOWPREV = 4006;
  74
  75 // This range gives a maximum of 500 MDI children. Should be enough :-)
  76 static const int wxFIRST_MDI_CHILD = 4100;
  77 static const int wxLAST_MDI_CHILD = 4600;
  78
  79 // ---------------------------------------------------------------------------
  80 // private functions
  81 // ---------------------------------------------------------------------------
  82
  83 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
  84 // of the parent of win (which is supposed to be the MDI client window)
  85 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
  86
  87 // insert the window menu (subMenu) into menu just before "Help" submenu or at
  88 // the very end if not found
  89 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
  90
  91 // Remove the window menu
  92 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu);
  93
  94 // is this an id of an MDI child?
  95 inline bool IsMdiCommandId(int id)
  96 {
  97     return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
  98 }
  99
 100 // unpack the parameters of WM_MDIACTIVATE message
 101 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
 102                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
 103
 104 // return the HMENU of the MDI menu
 105 static inline HMENU GetMDIWindowMenu(wxMDIParentFrame *frame)
 106 {
 107     wxMenu *menu = frame->GetWindowMenu();
 108     return menu ? GetHmenuOf(menu) : 0;
 109 }
 110
 111 // ===========================================================================
 112 // implementation
 113 // ===========================================================================
 114
 115 // ---------------------------------------------------------------------------
 116 // wxWin macros
 117 // ---------------------------------------------------------------------------
 118
 119 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 120 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 121 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 122
 123 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 124     EVT_SIZE(wxMDIParentFrame::OnSize)
 125     EVT_ICONIZE(wxMDIParentFrame::OnIconized)
 126     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 127 END_EVENT_TABLE()
 128
 129 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 130     EVT_IDLE(wxMDIChildFrame::OnIdle)
 131 END_EVENT_TABLE()
 132
 133 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 134     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 135 END_EVENT_TABLE()
 136
 137 // ===========================================================================
 138 // wxMDIParentFrame: the frame which contains the client window which manages
 139 // the children
 140 // ===========================================================================
 141
 142 wxMDIParentFrame::wxMDIParentFrame()
 143 {
 144     m_clientWindow = NULL;
 145     m_currentChild = NULL;
 146     m_windowMenu = (wxMenu*) NULL;
 147     m_parentFrameActive = true;
 148 }
 149
 150 bool wxMDIParentFrame::Create(wxWindow *parent,
 151                               wxWindowID id,
 152                               const wxString& title,
 153                               const wxPoint& pos,
 154                               const wxSize& size,
 155                               long style,
 156                               const wxString& name)
 157 {
 158   m_clientWindow = NULL;
 159   m_currentChild = NULL;
 160
 161   // this style can be used to prevent a window from having the standard MDI
 162   // "Window" menu
 163   if ( style & wxFRAME_NO_WINDOW_MENU )
 164   {
 165       m_windowMenu = (wxMenu *)NULL;
 166   }
 167   else // normal case: we have the window menu, so construct it
 168   {
 169       m_windowMenu = new wxMenu;
 170
 171       m_windowMenu->Append(IDM_WINDOWCASCADE, _("&Cascade"));
 172       m_windowMenu->Append(IDM_WINDOWTILEHOR, _("Tile &Horizontally"));
 173       m_windowMenu->Append(IDM_WINDOWTILEVERT, _("Tile &Vertically"));
 174       m_windowMenu->AppendSeparator();
 175       m_windowMenu->Append(IDM_WINDOWICONS, _("&Arrange Icons"));
 176       m_windowMenu->Append(IDM_WINDOWNEXT, _("&Next"));
 177       m_windowMenu->Append(IDM_WINDOWPREV, _("&Previous"));
 178   }
 179
 180   m_parentFrameActive = true;
 181
 182   if (!parent)
 183     wxTopLevelWindows.Append(this);
 184
 185   SetName(name);
 186   m_windowStyle = style;
 187
 188   if ( parent )
 189       parent->AddChild(this);
 190
 191   if ( id != wxID_ANY )
 192     m_windowId = id;
 193   else
 194     m_windowId = NewControlId();
 195
 196   WXDWORD exflags;
 197   WXDWORD msflags = MSWGetCreateWindowFlags(&exflags);
 198   msflags &= ~WS_VSCROLL;
 199   msflags &= ~WS_HSCROLL;
 200
 201   if ( !wxWindow::MSWCreate(wxMDIFrameClassName,
 202                             title.wx_str(),
 203                             pos, size,
 204                             msflags,
 205                             exflags) )
 206   {
 207       return false;
 208   }
 209
 210   SetOwnBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 211
 212   // unlike (almost?) all other windows, frames are created hidden
 213   m_isShown = false;
 214
 215   return true;
 216 }
 217
 218 wxMDIParentFrame::~wxMDIParentFrame()
 219 {
 220     // see comment in ~wxMDIChildFrame
 221 #if wxUSE_TOOLBAR
 222     m_frameToolBar = NULL;
 223 #endif
 224 #if wxUSE_STATUSBAR
 225     m_frameStatusBar = NULL;
 226 #endif // wxUSE_STATUSBAR
 227
 228     DestroyChildren();
 229
 230     if (m_windowMenu)
 231     {
 232         delete m_windowMenu;
 233         m_windowMenu = (wxMenu*) NULL;
 234     }
 235
 236     // the MDI frame menubar is not automatically deleted by Windows unlike for
 237     // the normal frames
 238     if ( m_hMenu )
 239     {
 240         ::DestroyMenu((HMENU)m_hMenu);
 241         m_hMenu = (WXHMENU)NULL;
 242     }
 243
 244     if ( m_clientWindow )
 245     {
 246         if ( m_clientWindow->MSWGetOldWndProc() )
 247             m_clientWindow->UnsubclassWin();
 248
 249         m_clientWindow->SetHWND(0);
 250         delete m_clientWindow;
 251     }
 252 }
 253
 254 #if wxUSE_MENUS_NATIVE
 255
 256 void wxMDIParentFrame::InternalSetMenuBar()
 257 {
 258     m_parentFrameActive = true;
 259
 260     InsertWindowMenu(GetClientWindow(), m_hMenu, GetMDIWindowMenu(this));
 261 }
 262
 263 #endif // wxUSE_MENUS_NATIVE
 264
 265 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 266 {
 267     if (m_windowMenu)
 268     {
 269         if (GetMenuBar())
 270         {
 271             // Remove old window menu
 272             RemoveWindowMenu(GetClientWindow(), m_hMenu);
 273         }
 274
 275         delete m_windowMenu;
 276         m_windowMenu = (wxMenu*) NULL;
 277     }
 278
 279     if (menu)
 280     {
 281         m_windowMenu = menu;
 282         if (GetMenuBar())
 283         {
 284             InsertWindowMenu(GetClientWindow(), m_hMenu,
 285                              GetHmenuOf(m_windowMenu));
 286         }
 287     }
 288 }
 289
 290 void wxMDIParentFrame::DoMenuUpdates(wxMenu* menu)
 291 {
 292     wxMDIChildFrame *child = GetActiveChild();
 293     if ( child )
 294     {
 295         wxEvtHandler* source = child->GetEventHandler();
 296         wxMenuBar* bar = child->GetMenuBar();
 297
 298         if (menu)
 299         {
 300             menu->UpdateUI(source);
 301         }
 302         else
 303         {
 304             if ( bar != NULL )
 305             {
 306                 int nCount = bar->GetMenuCount();
 307                 for (int n = 0; n < nCount; n++)
 308                     bar->GetMenu(n)->UpdateUI(source);
 309             }
 310         }
 311     }
 312     else
 313     {
 314         wxFrameBase::DoMenuUpdates(menu);
 315     }
 316 }
 317
 318 const wxMenuItem *wxMDIParentFrame::FindItemInMenuBar(int menuId) const
 319 {
 320     const wxMenuItem *item = wxFrame::FindItemInMenuBar(menuId);
 321     if ( !item && m_currentChild )
 322     {
 323         item = m_currentChild->FindItemInMenuBar(menuId);
 324     }
 325
 326     return item;
 327 }
 328
 329 void wxMDIParentFrame::UpdateClientSize()
 330 {
 331     if ( GetClientWindow() )
 332     {
 333         int width, height;
 334         GetClientSize(&width, &height);
 335
 336         GetClientWindow()->SetSize(0, 0, width, height);
 337     }
 338 }
 339
 340 void wxMDIParentFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 341 {
 342     UpdateClientSize();
 343
 344     // do not call event.Skip() here, it somehow messes up MDI client window
 345 }
 346
 347 void wxMDIParentFrame::OnIconized(wxIconizeEvent& event)
 348 {
 349     event.Skip();
 350
 351     if ( !event.Iconized() )
 352     {
 353         UpdateClientSize();
 354     }
 355 }
 356
 357 // Returns the active MDI child window
 358 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 359 {
 360     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 361                                     WM_MDIGETACTIVE, 0, 0L);
 362     if ( hWnd == 0 )
 363         return NULL;
 364     else
 365         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 366 }
 367
 368 // Create the client window class (don't Create the window, just return a new
 369 // class)
 370 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 371 {
 372     return new wxMDIClientWindow;
 373 }
 374
 375 // Responds to colour changes, and passes event on to children.
 376 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 377 {
 378     if ( m_clientWindow )
 379     {
 380         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 381         m_clientWindow->Refresh();
 382     }
 383
 384     event.Skip();
 385 }
 386
 387 WXHICON wxMDIParentFrame::GetDefaultIcon() const
 388 {
 389     // we don't have any standard icons (any more)
 390     return (WXHICON)0;
 391 }
 392
 393 // ---------------------------------------------------------------------------
 394 // MDI operations
 395 // ---------------------------------------------------------------------------
 396
 397 void wxMDIParentFrame::Cascade()
 398 {
 399     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 400 }
 401
 402 void wxMDIParentFrame::Tile(wxOrientation orient)
 403 {
 404     wxASSERT_MSG( orient == wxHORIZONTAL || orient == wxVERTICAL,
 405                   _T("invalid orientation value") );
 406
 407     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE,
 408                   orient == wxHORIZONTAL ? MDITILE_HORIZONTAL
 409                                          : MDITILE_VERTICAL, 0);
 410 }
 411
 412 void wxMDIParentFrame::ArrangeIcons()
 413 {
 414     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 415 }
 416
 417 void wxMDIParentFrame::ActivateNext()
 418 {
 419     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 420 }
 421
 422 void wxMDIParentFrame::ActivatePrevious()
 423 {
 424     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 425 }
 426
 427 // ---------------------------------------------------------------------------
 428 // the MDI parent frame window proc
 429 // ---------------------------------------------------------------------------
 430
 431 WXLRESULT wxMDIParentFrame::MSWWindowProc(WXUINT message,
 432                                      WXWPARAM wParam,
 433                                      WXLPARAM lParam)
 434 {
 435     WXLRESULT rc = 0;
 436     bool processed = false;
 437
 438     switch ( message )
 439     {
 440         case WM_ACTIVATE:
 441             {
 442                 WXWORD state, minimized;
 443                 WXHWND hwnd;
 444                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 445
 446                 processed = HandleActivate(state, minimized != 0, hwnd);
 447             }
 448             break;
 449
 450         case WM_COMMAND:
 451             {
 452                 WXWORD id, cmd;
 453                 WXHWND hwnd;
 454                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 455
 456                 (void)HandleCommand(id, cmd, hwnd);
 457
 458                 // even if the frame didn't process it, there is no need to try it
 459                 // once again (i.e. call wxFrame::HandleCommand()) - we just did it,
 460                 // so pretend we processed the message anyhow
 461                 processed = true;
 462             }
 463
 464             // always pass this message DefFrameProc(), otherwise MDI menu
 465             // commands (and sys commands - more surprisingly!) won't work
 466             MSWDefWindowProc(message, wParam, lParam);
 467             break;
 468
 469         case WM_CREATE:
 470             m_clientWindow = OnCreateClient();
 471             // Uses own style for client style
 472             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 473             {
 474                 wxLogMessage(_("Failed to create MDI parent frame."));
 475
 476                 rc = -1;
 477             }
 478
 479             processed = true;
 480             break;
 481
 482         case WM_ERASEBKGND:
 483             processed = true;
 484
 485             // we erase background ourselves
 486             rc = true;
 487             break;
 488
 489         case WM_SIZE:
 490             // though we don't (usually) resize the MDI client to exactly fit the
 491             // client area we need to pass this one to DefFrameProc to allow the children to show
 492             break;
 493     }
 494
 495     if ( !processed )
 496         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 497
 498     return rc;
 499 }
 500
 501 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 502 {
 503     bool processed = false;
 504
 505     if ( wxWindow::HandleActivate(state, minimized, activate) )
 506     {
 507         // already processed
 508         processed = true;
 509     }
 510
 511     // If this window is an MDI parent, we must also send an OnActivate message
 512     // to the current child.
 513     if ( (m_currentChild != NULL) &&
 514          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 515     {
 516         wxActivateEvent event(wxEVT_ACTIVATE, true, m_currentChild->GetId());
 517         event.SetEventObject( m_currentChild );
 518         if ( m_currentChild->HandleWindowEvent(event) )
 519             processed = true;
 520     }
 521
 522     return processed;
 523 }
 524
 525 bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 526 {
 527     // In case it's e.g. a toolbar.
 528     if ( hwnd )
 529     {
 530         wxWindow *win = wxFindWinFromHandle(hwnd);
 531         if ( win )
 532             return win->MSWCommand(cmd, id);
 533     }
 534
 535     if (wxCurrentPopupMenu)
 536     {
 537         wxMenu *popupMenu = wxCurrentPopupMenu;
 538         wxCurrentPopupMenu = NULL;
 539         if (popupMenu->MSWCommand(cmd, id))
 540             return true;
 541     }
 542
 543     // is it one of standard MDI commands?
 544     WXWPARAM wParam = 0;
 545     WXLPARAM lParam = 0;
 546     int msg;
 547     switch ( id )
 548     {
 549         case IDM_WINDOWCASCADE:
 550             msg = WM_MDICASCADE;
 551             wParam = MDITILE_SKIPDISABLED;
 552             break;
 553
 554         case IDM_WINDOWTILEHOR:
 555             wParam |= MDITILE_HORIZONTAL;
 556             // fall through
 557
 558         case IDM_WINDOWTILEVERT:
 559             if ( !wParam )
 560                 wParam = MDITILE_VERTICAL;
 561             msg = WM_MDITILE;
 562             wParam |= MDITILE_SKIPDISABLED;
 563             break;
 564
 565         case IDM_WINDOWICONS:
 566             msg = WM_MDIICONARRANGE;
 567             break;
 568
 569         case IDM_WINDOWNEXT:
 570             msg = WM_MDINEXT;
 571             lParam = 0;         // next child
 572             break;
 573
 574         case IDM_WINDOWPREV:
 575             msg = WM_MDINEXT;
 576             lParam = 1;         // previous child
 577             break;
 578
 579         default:
 580             msg = 0;
 581     }
 582
 583     if ( msg )
 584     {
 585         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, lParam);
 586
 587         return true;
 588     }
 589
 590     // FIXME VZ: what does this test do??
 591     if (id >= 0xF000)
 592     {
 593         return false; // Get WndProc to call default proc
 594     }
 595
 596     if ( IsMdiCommandId(id) )
 597     {
 598         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 599         while ( node )
 600         {
 601             wxWindow *child = node->GetData();
 602             if ( child->GetHWND() )
 603             {
 604                 int childId = wxGetWindowId(child->GetHWND());
 605                 if ( childId == (signed short)id )
 606                 {
 607                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 608                                    WM_MDIACTIVATE,
 609                                    (WPARAM)child->GetHWND(), 0);
 610                     return true;
 611                 }
 612             }
 613             node = node->GetNext();
 614         }
 615     }
 616     else if ( m_parentFrameActive )
 617     {
 618         return ProcessCommand(id);
 619     }
 620     else if ( m_currentChild )
 621     {
 622         return m_currentChild->HandleCommand(id, cmd, hwnd);
 623     }
 624     else
 625     {
 626         // this shouldn't happen because it means that our messages are being
 627         // lost (they're not sent to the parent frame nor to the children)
 628         wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
 629     }
 630
 631     return false;
 632 }
 633
 634 WXLRESULT wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 635                                         WXWPARAM wParam,
 636                                         WXLPARAM lParam)
 637 {
 638     WXHWND clientWnd;
 639     if ( GetClientWindow() )
 640         clientWnd = GetClientWindow()->GetHWND();
 641     else
 642         clientWnd = 0;
 643
 644     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 645 }
 646
 647 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 648 {
 649     MSG *pMsg = (MSG *)msg;
 650
 651     // first let the current child get it
 652     if ( m_currentChild && m_currentChild->GetHWND() &&
 653          m_currentChild->MSWTranslateMessage(msg) )
 654     {
 655         return true;
 656     }
 657
 658     // then try out accel table (will also check the menu accels)
 659     if ( wxFrame::MSWTranslateMessage(msg) )
 660     {
 661         return true;
 662     }
 663
 664     // finally, check for MDI specific built in accel keys
 665     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 666     {
 667         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 668             return true;
 669     }
 670
 671     return false;
 672 }
 673
 674 // ===========================================================================
 675 // wxMDIChildFrame
 676 // ===========================================================================
 677
 678 void wxMDIChildFrame::Init()
 679 {
 680     m_needsResize = true;
 681     m_needsInitialShow = true;
 682 }
 683
 684 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 685                              wxWindowID id,
 686                              const wxString& title,
 687                              const wxPoint& pos,
 688                              const wxSize& size,
 689                              long style,
 690                              const wxString& name)
 691 {
 692   SetName(name);
 693
 694   if ( id != wxID_ANY )
 695     m_windowId = id;
 696   else
 697     m_windowId = NewControlId();
 698
 699   if ( parent )
 700   {
 701       parent->AddChild(this);
 702   }
 703
 704   int x = pos.x;
 705   int y = pos.y;
 706   int width = size.x;
 707   int height = size.y;
 708
 709   MDICREATESTRUCT mcs;
 710
 711   mcs.szClass = style & wxFULL_REPAINT_ON_RESIZE
 712                     ? wxMDIChildFrameClassName
 713                     : wxMDIChildFrameClassNameNoRedraw;
 714   mcs.szTitle = title.wx_str();
 715   mcs.hOwner = wxGetInstance();
 716   if (x != wxDefaultCoord)
 717       mcs.x = x;
 718   else
 719       mcs.x = CW_USEDEFAULT;
 720
 721   if (y != wxDefaultCoord)
 722       mcs.y = y;
 723   else
 724       mcs.y = CW_USEDEFAULT;
 725
 726   if (width != wxDefaultCoord)
 727       mcs.cx = width;
 728   else
 729       mcs.cx = CW_USEDEFAULT;
 730
 731   if (height != wxDefaultCoord)
 732       mcs.cy = height;
 733   else
 734       mcs.cy = CW_USEDEFAULT;
 735
 736   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
 737   if (style & wxMINIMIZE_BOX)
 738     msflags |= WS_MINIMIZEBOX;
 739   if (style & wxMAXIMIZE_BOX)
 740     msflags |= WS_MAXIMIZEBOX;
 741   if (style & wxRESIZE_BORDER)
 742     msflags |= WS_THICKFRAME;
 743   if (style & wxSYSTEM_MENU)
 744     msflags |= WS_SYSMENU;
 745   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 746     msflags |= WS_MINIMIZE;
 747   if (style & wxMAXIMIZE)
 748     msflags |= WS_MAXIMIZE;
 749   if (style & wxCAPTION)
 750     msflags |= WS_CAPTION;
 751
 752   mcs.style = msflags;
 753
 754   mcs.lParam = 0;
 755
 756   wxWindowCreationHook hook(this);
 757
 758   m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 759                                  WM_MDICREATE, 0, (LPARAM)&mcs);
 760
 761   if ( !m_hWnd )
 762   {
 763       wxLogLastError(_T("WM_MDICREATE"));
 764       return false;
 765   }
 766
 767   SubclassWin(m_hWnd);
 768
 769   return true;
 770 }
 771
 772 wxMDIChildFrame::~wxMDIChildFrame()
 773 {
 774     // if we hadn't been created, there is nothing to destroy
 775     if ( !m_hWnd )
 776         return;
 777
 778     // will be destroyed by DestroyChildren() but reset them before calling it
 779     // to avoid using dangling pointers if a callback comes in the meanwhile
 780 #if wxUSE_TOOLBAR
 781     m_frameToolBar = NULL;
 782 #endif
 783 #if wxUSE_STATUSBAR
 784     m_frameStatusBar = NULL;
 785 #endif // wxUSE_STATUSBAR
 786
 787     DestroyChildren();
 788
 789     RemoveWindowMenu(NULL, m_hMenu);
 790
 791     MSWDestroyWindow();
 792 }
 793
 794 bool wxMDIChildFrame::Show(bool show)
 795 {
 796     m_needsInitialShow = false;
 797
 798     if (!wxFrame::Show(show))
 799         return false;
 800
 801     // KH: Without this call, new MDI children do not become active.
 802     // This was added here after the same BringWindowToTop call was
 803     // removed from wxTopLevelWindow::Show (November 2005)
 804     if ( show )
 805         ::BringWindowToTop(GetHwnd());
 806
 807     // we need to refresh the MDI frame window menu to include (or exclude if
 808     // we've been hidden) this frame
 809     wxMDIParentFrame *parent = GetMDIParent();
 810     MDISetMenu(parent->GetClientWindow(), NULL, NULL);
 811
 812     return true;
 813 }
 814
 815 // Set the client size (i.e. leave the calculation of borders etc.
 816 // to wxWidgets)
 817 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 818 {
 819   HWND hWnd = GetHwnd();
 820
 821   RECT rect;
 822   ::GetClientRect(hWnd, &rect);
 823
 824   RECT rect2;
 825   GetWindowRect(hWnd, &rect2);
 826
 827   // Find the difference between the entire window (title bar and all)
 828   // and the client area; add this to the new client size to move the
 829   // window
 830   int actual_width = rect2.right - rect2.left - rect.right + width;
 831   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 832
 833 #if wxUSE_STATUSBAR
 834   if (GetStatusBar() && GetStatusBar()->IsShown())
 835   {
 836     int sx, sy;
 837     GetStatusBar()->GetSize(&sx, &sy);
 838     actual_height += sy;
 839   }
 840 #endif // wxUSE_STATUSBAR
 841
 842   POINT point;
 843   point.x = rect2.left;
 844   point.y = rect2.top;
 845
 846   // If there's an MDI parent, must subtract the parent's top left corner
 847   // since MoveWindow moves relative to the parent
 848   wxMDIParentFrame *mdiParent = GetMDIParent();
 849   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 850
 851   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)true);
 852
 853   wxSize size(width, height);
 854   wxSizeEvent event(size, m_windowId);
 855   event.SetEventObject( this );
 856   HandleWindowEvent(event);
 857 }
 858
 859 // Unlike other wxTopLevelWindowBase, the mdi child's "GetPosition" is not the
 860 //  same as its GetScreenPosition
 861 void wxMDIChildFrame::DoGetScreenPosition(int *x, int *y) const
 862 {
 863   HWND hWnd = GetHwnd();
 864
 865   RECT rect;
 866   ::GetWindowRect(hWnd, &rect);
 867   if (x)
 868      *x = rect.left;
 869   if (y)
 870      *y = rect.top;
 871 }
 872
 873
 874 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 875 {
 876   RECT rect;
 877   GetWindowRect(GetHwnd(), &rect);
 878   POINT point;
 879   point.x = rect.left;
 880   point.y = rect.top;
 881
 882   // Since we now have the absolute screen coords,
 883   // if there's a parent we must subtract its top left corner
 884   wxMDIParentFrame *mdiParent = GetMDIParent();
 885   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 886
 887   if (x)
 888       *x = point.x;
 889   if (y)
 890       *y = point.y;
 891 }
 892
 893 void wxMDIChildFrame::InternalSetMenuBar()
 894 {
 895     wxMDIParentFrame *parent = GetMDIParent();
 896
 897     InsertWindowMenu(parent->GetClientWindow(),
 898                      m_hMenu, GetMDIWindowMenu(parent));
 899
 900     parent->m_parentFrameActive = false;
 901 }
 902
 903 void wxMDIChildFrame::DetachMenuBar()
 904 {
 905     RemoveWindowMenu(NULL, m_hMenu);
 906     wxFrame::DetachMenuBar();
 907 }
 908
 909 WXHICON wxMDIChildFrame::GetDefaultIcon() const
 910 {
 911     // we don't have any standard icons (any more)
 912     return (WXHICON)0;
 913 }
 914
 915 // ---------------------------------------------------------------------------
 916 // MDI operations
 917 // ---------------------------------------------------------------------------
 918
 919 void wxMDIChildFrame::Maximize(bool maximize)
 920 {
 921     wxMDIParentFrame *parent = GetMDIParent();
 922     if ( parent && parent->GetClientWindow() )
 923     {
 924         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 925                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
 926                       (WPARAM)GetHwnd(), 0);
 927     }
 928 }
 929
 930 void wxMDIChildFrame::Restore()
 931 {
 932     wxMDIParentFrame *parent = GetMDIParent();
 933     if ( parent && parent->GetClientWindow() )
 934     {
 935         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
 936                       (WPARAM) GetHwnd(), 0);
 937     }
 938 }
 939
 940 void wxMDIChildFrame::Activate()
 941 {
 942     wxMDIParentFrame *parent = GetMDIParent();
 943     if ( parent && parent->GetClientWindow() )
 944     {
 945         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
 946                       (WPARAM) GetHwnd(), 0);
 947     }
 948 }
 949
 950 // ---------------------------------------------------------------------------
 951 // MDI window proc and message handlers
 952 // ---------------------------------------------------------------------------
 953
 954 WXLRESULT wxMDIChildFrame::MSWWindowProc(WXUINT message,
 955                                     WXWPARAM wParam,
 956                                     WXLPARAM lParam)
 957 {
 958     WXLRESULT rc = 0;
 959     bool processed = false;
 960
 961     switch ( message )
 962     {
 963         case WM_COMMAND:
 964             {
 965                 WORD id, cmd;
 966                 WXHWND hwnd;
 967                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 968                               &id, &hwnd, &cmd);
 969
 970                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 971             }
 972             break;
 973
 974         case WM_GETMINMAXINFO:
 975             processed = HandleGetMinMaxInfo((MINMAXINFO *)lParam);
 976             break;
 977
 978         case WM_MDIACTIVATE:
 979             {
 980                 WXWORD act;
 981                 WXHWND hwndAct, hwndDeact;
 982                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
 983
 984                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
 985             }
 986             // fall through
 987
 988         case WM_MOVE:
 989             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
 990             // scrollbars if necessary
 991
 992             // fall through
 993
 994         case WM_SIZE:
 995             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
 996             // things happen
 997             MSWDefWindowProc(message, wParam, lParam);
 998             break;
 999
1000         case WM_SYSCOMMAND:
1001             // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
1002             // the message (the base class version does not)
1003             return MSWDefWindowProc(message, wParam, lParam);
1004
1005         case WM_WINDOWPOSCHANGING:
1006             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
1007             break;
1008     }
1009
1010     if ( !processed )
1011         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
1012
1013     return rc;
1014 }
1015
1016 bool wxMDIChildFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
1017 {
1018     // In case it's e.g. a toolbar.
1019     if ( hwnd )
1020     {
1021         wxWindow *win = wxFindWinFromHandle(hwnd);
1022         if (win)
1023             return win->MSWCommand(cmd, id);
1024     }
1025
1026     if (wxCurrentPopupMenu)
1027     {
1028         wxMenu *popupMenu = wxCurrentPopupMenu;
1029         wxCurrentPopupMenu = NULL;
1030         if (popupMenu->MSWCommand(cmd, id))
1031             return true;
1032     }
1033
1034     bool processed;
1035     if (GetMenuBar() && GetMenuBar()->FindItem(id))
1036     {
1037         processed = ProcessCommand(id);
1038     }
1039     else
1040     {
1041         processed = false;
1042     }
1043
1044     return processed;
1045 }
1046
1047 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
1048                                         WXHWND hwndAct,
1049                                         WXHWND hwndDeact)
1050 {
1051     wxMDIParentFrame *parent = GetMDIParent();
1052
1053     HMENU menuToSet = 0;
1054
1055     bool activated;
1056
1057     if ( m_hWnd == hwndAct )
1058     {
1059         activated = true;
1060         parent->m_currentChild = this;
1061
1062         HMENU child_menu = (HMENU)GetWinMenu();
1063         if ( child_menu )
1064         {
1065             parent->m_parentFrameActive = false;
1066
1067             menuToSet = child_menu;
1068         }
1069     }
1070     else if ( m_hWnd == hwndDeact )
1071     {
1072         wxASSERT_MSG( parent->m_currentChild == this,
1073                       wxT("can't deactivate MDI child which wasn't active!") );
1074
1075         activated = false;
1076         parent->m_currentChild = NULL;
1077
1078         HMENU parent_menu = (HMENU)parent->GetWinMenu();
1079
1080         // activate the the parent menu only when there is no other child
1081         // that has been activated
1082         if ( parent_menu && !hwndAct )
1083         {
1084             parent->m_parentFrameActive = true;
1085
1086             menuToSet = parent_menu;
1087         }
1088     }
1089     else
1090     {
1091         // we have nothing to do with it
1092         return false;
1093     }
1094
1095     if ( menuToSet )
1096     {
1097         MDISetMenu(parent->GetClientWindow(),
1098                    menuToSet, GetMDIWindowMenu(parent));
1099     }
1100
1101     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
1102     event.SetEventObject( this );
1103
1104     ResetWindowStyle((void *)NULL);
1105
1106     return HandleWindowEvent(event);
1107 }
1108
1109 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
1110 {
1111     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1112
1113     if (!(lpPos->flags & SWP_NOSIZE))
1114     {
1115         RECT rectClient;
1116         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1117         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1118         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1119         {
1120             ::AdjustWindowRectEx(&rectClient, dwStyle, false, dwExStyle);
1121             lpPos->x = rectClient.left;
1122             lpPos->y = rectClient.top;
1123             lpPos->cx = rectClient.right - rectClient.left;
1124             lpPos->cy = rectClient.bottom - rectClient.top;
1125         }
1126     }
1127
1128     return false;
1129 }
1130
1131 bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo)
1132 {
1133     MINMAXINFO *info = (MINMAXINFO *)mmInfo;
1134
1135     // let the default window proc calculate the size of MDI children
1136     // frames because it is based on the size of the MDI client window,
1137     // not on the values specified in wxWindow m_max variables
1138     bool processed = MSWDefWindowProc(WM_GETMINMAXINFO, 0, (LPARAM)mmInfo) != 0;
1139
1140     int minWidth = GetMinWidth(),
1141         minHeight = GetMinHeight();
1142
1143     // but allow GetSizeHints() to set the min size
1144     if ( minWidth != wxDefaultCoord )
1145     {
1146         info->ptMinTrackSize.x = minWidth;
1147
1148         processed = true;
1149     }
1150
1151     if ( minHeight != wxDefaultCoord )
1152     {
1153         info->ptMinTrackSize.y = minHeight;
1154
1155         processed = true;
1156     }
1157
1158     return processed;
1159 }
1160
1161 // ---------------------------------------------------------------------------
1162 // MDI specific message translation/preprocessing
1163 // ---------------------------------------------------------------------------
1164
1165 WXLRESULT wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
1166 {
1167     return DefMDIChildProc(GetHwnd(),
1168                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1169 }
1170
1171 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1172 {
1173     // we must pass the parent frame to ::TranslateAccelerator(), otherwise it
1174     // doesn't do its job correctly for MDI child menus
1175     return MSWDoTranslateMessage(GetMDIParent(), msg);
1176 }
1177
1178 // ---------------------------------------------------------------------------
1179 // misc
1180 // ---------------------------------------------------------------------------
1181
1182 void wxMDIChildFrame::MSWDestroyWindow()
1183 {
1184     wxMDIParentFrame *parent = GetMDIParent();
1185
1186     // Must make sure this handle is invalidated (set to NULL) since all sorts
1187     // of things could happen after the child client is destroyed, but before
1188     // the wxFrame is destroyed.
1189
1190     HWND oldHandle = (HWND)GetHWND();
1191     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1192                 (WPARAM)oldHandle, 0);
1193
1194     if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
1195         ResetWindowStyle((void*) NULL);
1196
1197     if (m_hMenu)
1198     {
1199         ::DestroyMenu((HMENU) m_hMenu);
1200         m_hMenu = 0;
1201     }
1202     wxRemoveHandleAssociation(this);
1203     m_hWnd = 0;
1204 }
1205
1206 // Change the client window's extended style so we don't get a client edge
1207 // style when a child is maximised (a double border looks silly.)
1208 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1209 {
1210     RECT *rect = (RECT *)vrect;
1211     wxMDIParentFrame* pFrameWnd = GetMDIParent();
1212     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1213
1214     if (!pChild || (pChild == this))
1215     {
1216         HWND hwndClient = GetWinHwnd(pFrameWnd->GetClientWindow());
1217         DWORD dwStyle = ::GetWindowLong(hwndClient, GWL_EXSTYLE);
1218
1219         // we want to test whether there is a maximized child, so just set
1220         // dwThisStyle to 0 if there is no child at all
1221         DWORD dwThisStyle = pChild
1222             ? ::GetWindowLong(GetWinHwnd(pChild), GWL_STYLE) : 0;
1223         DWORD dwNewStyle = dwStyle;
1224         if ( dwThisStyle & WS_MAXIMIZE )
1225             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1226         else
1227             dwNewStyle |= WS_EX_CLIENTEDGE;
1228
1229         if (dwStyle != dwNewStyle)
1230         {
1231             // force update of everything
1232             ::RedrawWindow(hwndClient, NULL, NULL,
1233                            RDW_INVALIDATE | RDW_ALLCHILDREN);
1234             ::SetWindowLong(hwndClient, GWL_EXSTYLE, dwNewStyle);
1235             ::SetWindowPos(hwndClient, NULL, 0, 0, 0, 0,
1236                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1237                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1238                            SWP_NOCOPYBITS);
1239             if (rect)
1240                 ::GetClientRect(hwndClient, rect);
1241
1242             return true;
1243         }
1244     }
1245
1246     return false;
1247 }
1248
1249 // ===========================================================================
1250 // wxMDIClientWindow: the window of predefined (by Windows) class which
1251 // contains the child frames
1252 // ===========================================================================
1253
1254 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1255 {
1256     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
1257
1258     CLIENTCREATESTRUCT ccs;
1259     m_windowStyle = style;
1260     m_parent = parent;
1261
1262     ccs.hWindowMenu = GetMDIWindowMenu(parent);
1263     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1264
1265     DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD |
1266                     WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
1267
1268     if ( style & wxHSCROLL )
1269         msStyle |= WS_HSCROLL;
1270     if ( style & wxVSCROLL )
1271         msStyle |= WS_VSCROLL;
1272
1273     DWORD exStyle = WS_EX_CLIENTEDGE;
1274
1275     wxWindowCreationHook hook(this);
1276     m_hWnd = (WXHWND)::CreateWindowEx
1277                        (
1278                         exStyle,
1279                         wxT("MDICLIENT"),
1280                         NULL,
1281                         msStyle,
1282                         0, 0, 0, 0,
1283                         GetWinHwnd(parent),
1284                         NULL,
1285                         wxGetInstance(),
1286                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1287     if ( !m_hWnd )
1288     {
1289         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1290
1291         return false;
1292     }
1293
1294     SubclassWin(m_hWnd);
1295
1296     return true;
1297 }
1298
1299 // Explicitly call default scroll behaviour
1300 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1301 {
1302     // Note: for client windows, the scroll position is not set in
1303     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1304     // scroll position we're at.
1305     // This makes it hard to paint patterns or bitmaps in the background,
1306     // and have the client area scrollable as well.
1307
1308     if ( event.GetOrientation() == wxHORIZONTAL )
1309         m_scrollX = event.GetPosition(); // Always returns zero!
1310     else
1311         m_scrollY = event.GetPosition(); // Always returns zero!
1312
1313     event.Skip();
1314 }
1315
1316 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1317 {
1318     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1319     // client area, you can end up with a non-refreshed portion in the client window
1320     // (see OGL studio sample). So check if the position is changed and if so,
1321     // redraw the MDI child frames.
1322
1323     const wxPoint oldPos = GetPosition();
1324
1325     wxWindow::DoSetSize(x, y, width, height, sizeFlags | wxSIZE_FORCE);
1326
1327     const wxPoint newPos = GetPosition();
1328
1329     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1330     {
1331         if (GetParent())
1332         {
1333             wxWindowList::compatibility_iterator node = GetParent()->GetChildren().GetFirst();
1334             while (node)
1335             {
1336                 wxWindow *child = node->GetData();
1337                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1338                 {
1339                    ::RedrawWindow(GetHwndOf(child),
1340                                   NULL,
1341                                   NULL,
1342                                   RDW_FRAME |
1343                                   RDW_ALLCHILDREN |
1344                                   RDW_INVALIDATE);
1345                 }
1346                 node = node->GetNext();
1347             }
1348         }
1349     }
1350 }
1351
1352 void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
1353 {
1354     // wxMSW prior to 2.5.3 created MDI child frames as visible, which resulted
1355     // in flicker e.g. when the frame contained controls with non-trivial
1356     // layout. Since 2.5.3, the frame is created hidden as all other top level
1357     // windows. In order to maintain backward compatibility, the frame is shown
1358     // in OnIdle, unless Show(false) was called by the programmer before.
1359     if ( m_needsInitialShow )
1360     {
1361         Show(true);
1362     }
1363
1364     // MDI child frames get their WM_SIZE when they're constructed but at this
1365     // moment they don't have any children yet so all child windows will be
1366     // positioned incorrectly when they are added later - to fix this, we
1367     // generate an artificial size event here
1368     if ( m_needsResize )
1369     {
1370         m_needsResize = false; // avoid any possibility of recursion
1371
1372         SendSizeEvent();
1373     }
1374
1375     event.Skip();
1376 }
1377
1378 // ---------------------------------------------------------------------------
1379 // non member functions
1380 // ---------------------------------------------------------------------------
1381
1382 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1383 {
1384     if ( hmenuFrame || hmenuWindow )
1385     {
1386         if ( !::SendMessage(GetWinHwnd(win),
1387                             WM_MDISETMENU,
1388                             (WPARAM)hmenuFrame,
1389                             (LPARAM)hmenuWindow) )
1390         {
1391 #ifdef __WXDEBUG__
1392             DWORD err = ::GetLastError();
1393             if ( err )
1394                 wxLogApiError(_T("SendMessage(WM_MDISETMENU)"), err);
1395 #endif // __WXDEBUG__
1396         }
1397     }
1398
1399     // update menu bar of the parent window
1400     wxWindow *parent = win->GetParent();
1401     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1402
1403     ::SendMessage(GetWinHwnd(win), WM_MDIREFRESHMENU, 0, 0L);
1404
1405     ::DrawMenuBar(GetWinHwnd(parent));
1406 }
1407
1408 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
1409 {
1410     // Try to insert Window menu in front of Help, otherwise append it.
1411     HMENU hmenu = (HMENU)menu;
1412
1413     if (subMenu)
1414     {
1415         int N = GetMenuItemCount(hmenu);
1416         bool success = false;
1417         for ( int i = 0; i < N; i++ )
1418         {
1419             wxChar buf[256];
1420             int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1421             if ( chars == 0 )
1422             {
1423                 wxLogLastError(wxT("GetMenuString"));
1424
1425                 continue;
1426             }
1427
1428             wxString strBuf(buf);
1429             if ( wxStripMenuCodes(strBuf) == wxGetStockLabel(wxID_HELP,false) )
1430             {
1431                 success = true;
1432                 ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1433                              (UINT_PTR)subMenu, _("&Window").wx_str());
1434                 break;
1435             }
1436         }
1437
1438         if ( !success )
1439         {
1440             ::AppendMenu(hmenu, MF_POPUP,
1441                          (UINT_PTR)subMenu, _("&Window").wx_str());
1442         }
1443     }
1444
1445     MDISetMenu(win, hmenu, subMenu);
1446 }
1447
1448 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu)
1449 {
1450     HMENU hMenu = (HMENU)menu;
1451
1452     if ( hMenu )
1453     {
1454         wxChar buf[1024];
1455
1456         int N = ::GetMenuItemCount(hMenu);
1457         for ( int i = 0; i < N; i++ )
1458         {
1459             if ( !::GetMenuString(hMenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) )
1460             {
1461                 // Ignore successful read of menu string with length 0 which
1462                 // occurs, for example, for a maximized MDI childs system menu
1463                 if ( ::GetLastError() != 0 )
1464                 {
1465                     wxLogLastError(wxT("GetMenuString"));
1466                 }
1467
1468                 continue;
1469             }
1470
1471             if ( wxStrcmp(buf, _("&Window")) == 0 )
1472             {
1473                 if ( !::RemoveMenu(hMenu, i, MF_BYPOSITION) )
1474                 {
1475                     wxLogLastError(wxT("RemoveMenu"));
1476                 }
1477
1478                 break;
1479             }
1480         }
1481     }
1482
1483     if ( win )
1484     {
1485         // we don't change the windows menu, but we update the main one
1486         MDISetMenu(win, hMenu, NULL);
1487     }
1488 }
1489
1490 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1491                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1492 {
1493     *activate = true;
1494     *hwndAct = (WXHWND)lParam;
1495     *hwndDeact = (WXHWND)wParam;
1496 }
1497
1498 #endif // wxUSE_MDI && !defined(__WXUNIVERSAL__)