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 #include <string.h>
  48
  49 // ---------------------------------------------------------------------------
  50 // global variables
  51 // ---------------------------------------------------------------------------
  52
  53 extern wxMenu *wxCurrentPopupMenu;
  54
  55 extern const wxChar *wxMDIFrameClassName;   // from app.cpp
  56 extern const wxChar *wxMDIChildFrameClassName;
  57 extern const wxChar *wxMDIChildFrameClassNameNoRedraw;
  58 extern void wxRemoveHandleAssociation(wxWindow *win);
  59
  60 // ---------------------------------------------------------------------------
  61 // constants
  62 // ---------------------------------------------------------------------------
  63
  64 static const int IDM_WINDOWTILEHOR  = 4001;
  65 static const int IDM_WINDOWCASCADE = 4002;
  66 static const int IDM_WINDOWICONS = 4003;
  67 static const int IDM_WINDOWNEXT = 4004;
  68 static const int IDM_WINDOWTILEVERT = 4005;
  69 static const int IDM_WINDOWPREV = 4006;
  70
  71 // This range gives a maximum of 500 MDI children. Should be enough :-)
  72 static const int wxFIRST_MDI_CHILD = 4100;
  73 static const int wxLAST_MDI_CHILD = 4600;
  74
  75 // ---------------------------------------------------------------------------
  76 // private functions
  77 // ---------------------------------------------------------------------------
  78
  79 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
  80 // of the parent of win (which is supposed to be the MDI client window)
  81 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
  82
  83 // insert the window menu (subMenu) into menu just before "Help" submenu or at
  84 // the very end if not found
  85 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
  86
  87 // Remove the window menu
  88 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu);
  89
  90 // is this an id of an MDI child?
  91 inline bool IsMdiCommandId(int id)
  92 {
  93     return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
  94 }
  95
  96 // unpack the parameters of WM_MDIACTIVATE message
  97 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
  98                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
  99
 100 // return the HMENU of the MDI menu
 101 static inline HMENU GetMDIWindowMenu(wxMDIParentFrame *frame)
 102 {
 103     wxMenu *menu = frame->GetWindowMenu();
 104     return menu ? GetHmenuOf(menu) : 0;
 105 }
 106
 107 // ===========================================================================
 108 // implementation
 109 // ===========================================================================
 110
 111 // ---------------------------------------------------------------------------
 112 // wxWin macros
 113 // ---------------------------------------------------------------------------
 114
 115 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 116 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 117 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 118
 119 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 120     EVT_SIZE(wxMDIParentFrame::OnSize)
 121     EVT_ICONIZE(wxMDIParentFrame::OnIconized)
 122     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 123 END_EVENT_TABLE()
 124
 125 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 126     EVT_IDLE(wxMDIChildFrame::OnIdle)
 127 END_EVENT_TABLE()
 128
 129 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 130     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 131 END_EVENT_TABLE()
 132
 133 // ===========================================================================
 134 // wxMDIParentFrame: the frame which contains the client window which manages
 135 // the children
 136 // ===========================================================================
 137
 138 wxMDIParentFrame::wxMDIParentFrame()
 139 {
 140     m_clientWindow = NULL;
 141     m_currentChild = NULL;
 142     m_windowMenu = (wxMenu*) NULL;
 143     m_parentFrameActive = true;
 144 }
 145
 146 bool wxMDIParentFrame::Create(wxWindow *parent,
 147                               wxWindowID id,
 148                               const wxString& title,
 149                               const wxPoint& pos,
 150                               const wxSize& size,
 151                               long style,
 152                               const wxString& name)
 153 {
 154   m_clientWindow = NULL;
 155   m_currentChild = NULL;
 156
 157   // this style can be used to prevent a window from having the standard MDI
 158   // "Window" menu
 159   if ( style & wxFRAME_NO_WINDOW_MENU )
 160   {
 161       m_windowMenu = (wxMenu *)NULL;
 162   }
 163   else // normal case: we have the window menu, so construct it
 164   {
 165       m_windowMenu = new wxMenu;
 166
 167       m_windowMenu->Append(IDM_WINDOWCASCADE, _("&Cascade"));
 168       m_windowMenu->Append(IDM_WINDOWTILEHOR, _("Tile &Horizontally"));
 169       m_windowMenu->Append(IDM_WINDOWTILEVERT, _("Tile &Vertically"));
 170       m_windowMenu->AppendSeparator();
 171       m_windowMenu->Append(IDM_WINDOWICONS, _("&Arrange Icons"));
 172       m_windowMenu->Append(IDM_WINDOWNEXT, _("&Next"));
 173       m_windowMenu->Append(IDM_WINDOWPREV, _("&Previous"));
 174   }
 175
 176   m_parentFrameActive = true;
 177
 178   if (!parent)
 179     wxTopLevelWindows.Append(this);
 180
 181   SetName(name);
 182   m_windowStyle = style;
 183
 184   if ( parent )
 185       parent->AddChild(this);
 186
 187   if ( id != wxID_ANY )
 188     m_windowId = id;
 189   else
 190     m_windowId = NewControlId();
 191
 192   WXDWORD exflags;
 193   WXDWORD msflags = MSWGetCreateWindowFlags(&exflags);
 194   msflags &= ~WS_VSCROLL;
 195   msflags &= ~WS_HSCROLL;
 196
 197   if ( !wxWindow::MSWCreate(wxMDIFrameClassName,
 198                             title.wx_str(),
 199                             pos, size,
 200                             msflags,
 201                             exflags) )
 202   {
 203       return false;
 204   }
 205
 206   SetOwnBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 207
 208   // unlike (almost?) all other windows, frames are created hidden
 209   m_isShown = false;
 210
 211   return true;
 212 }
 213
 214 wxMDIParentFrame::~wxMDIParentFrame()
 215 {
 216     // see comment in ~wxMDIChildFrame
 217 #if wxUSE_TOOLBAR
 218     m_frameToolBar = NULL;
 219 #endif
 220 #if wxUSE_STATUSBAR
 221     m_frameStatusBar = NULL;
 222 #endif // wxUSE_STATUSBAR
 223
 224     DestroyChildren();
 225
 226     if (m_windowMenu)
 227     {
 228         delete m_windowMenu;
 229         m_windowMenu = (wxMenu*) NULL;
 230     }
 231
 232     // the MDI frame menubar is not automatically deleted by Windows unlike for
 233     // the normal frames
 234     if ( m_hMenu )
 235     {
 236         ::DestroyMenu((HMENU)m_hMenu);
 237         m_hMenu = (WXHMENU)NULL;
 238     }
 239
 240     if ( m_clientWindow )
 241     {
 242         if ( m_clientWindow->MSWGetOldWndProc() )
 243             m_clientWindow->UnsubclassWin();
 244
 245         m_clientWindow->SetHWND(0);
 246         delete m_clientWindow;
 247     }
 248 }
 249
 250 #if wxUSE_MENUS_NATIVE
 251
 252 void wxMDIParentFrame::InternalSetMenuBar()
 253 {
 254     m_parentFrameActive = true;
 255
 256     InsertWindowMenu(GetClientWindow(), m_hMenu, GetMDIWindowMenu(this));
 257 }
 258
 259 #endif // wxUSE_MENUS_NATIVE
 260
 261 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 262 {
 263     if (m_windowMenu)
 264     {
 265         if (GetMenuBar())
 266         {
 267             // Remove old window menu
 268             RemoveWindowMenu(GetClientWindow(), m_hMenu);
 269         }
 270
 271         delete m_windowMenu;
 272         m_windowMenu = (wxMenu*) NULL;
 273     }
 274
 275     if (menu)
 276     {
 277         m_windowMenu = menu;
 278         if (GetMenuBar())
 279         {
 280             InsertWindowMenu(GetClientWindow(), m_hMenu,
 281                              GetHmenuOf(m_windowMenu));
 282         }
 283     }
 284 }
 285
 286 void wxMDIParentFrame::DoMenuUpdates(wxMenu* menu)
 287 {
 288     wxMDIChildFrame *child = GetActiveChild();
 289     if ( child )
 290     {
 291         wxEvtHandler* source = child->GetEventHandler();
 292         wxMenuBar* bar = child->GetMenuBar();
 293
 294         if (menu)
 295         {
 296             menu->UpdateUI(source);
 297         }
 298         else
 299         {
 300             if ( bar != NULL )
 301             {
 302                 int nCount = bar->GetMenuCount();
 303                 for (int n = 0; n < nCount; n++)
 304                     bar->GetMenu(n)->UpdateUI(source);
 305             }
 306         }
 307     }
 308     else
 309     {
 310         wxFrameBase::DoMenuUpdates(menu);
 311     }
 312 }
 313
 314 const wxMenuItem *wxMDIParentFrame::FindItemInMenuBar(int menuId) const
 315 {
 316     const wxMenuItem *item = wxFrame::FindItemInMenuBar(menuId);
 317     if ( !item && m_currentChild )
 318     {
 319         item = m_currentChild->FindItemInMenuBar(menuId);
 320     }
 321
 322     return item;
 323 }
 324
 325 void wxMDIParentFrame::UpdateClientSize()
 326 {
 327     if ( GetClientWindow() )
 328     {
 329         int width, height;
 330         GetClientSize(&width, &height);
 331
 332         GetClientWindow()->SetSize(0, 0, width, height);
 333     }
 334 }
 335
 336 void wxMDIParentFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 337 {
 338     UpdateClientSize();
 339
 340     // do not call event.Skip() here, it somehow messes up MDI client window
 341 }
 342
 343 void wxMDIParentFrame::OnIconized(wxIconizeEvent& event)
 344 {
 345     event.Skip();
 346
 347     if ( !event.Iconized() )
 348     {
 349         UpdateClientSize();
 350     }
 351 }
 352
 353 // Returns the active MDI child window
 354 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 355 {
 356     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 357                                     WM_MDIGETACTIVE, 0, 0L);
 358     if ( hWnd == 0 )
 359         return NULL;
 360     else
 361         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 362 }
 363
 364 // Create the client window class (don't Create the window, just return a new
 365 // class)
 366 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 367 {
 368     return new wxMDIClientWindow;
 369 }
 370
 371 // Responds to colour changes, and passes event on to children.
 372 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 373 {
 374     if ( m_clientWindow )
 375     {
 376         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 377         m_clientWindow->Refresh();
 378     }
 379
 380     event.Skip();
 381 }
 382
 383 WXHICON wxMDIParentFrame::GetDefaultIcon() const
 384 {
 385     // we don't have any standard icons (any more)
 386     return (WXHICON)0;
 387 }
 388
 389 // ---------------------------------------------------------------------------
 390 // MDI operations
 391 // ---------------------------------------------------------------------------
 392
 393 void wxMDIParentFrame::Cascade()
 394 {
 395     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 396 }
 397
 398 void wxMDIParentFrame::Tile(wxOrientation orient)
 399 {
 400     wxASSERT_MSG( orient == wxHORIZONTAL || orient == wxVERTICAL,
 401                   _T("invalid orientation value") );
 402
 403     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE,
 404                   orient == wxHORIZONTAL ? MDITILE_HORIZONTAL
 405                                          : MDITILE_VERTICAL, 0);
 406 }
 407
 408 void wxMDIParentFrame::ArrangeIcons()
 409 {
 410     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 411 }
 412
 413 void wxMDIParentFrame::ActivateNext()
 414 {
 415     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 416 }
 417
 418 void wxMDIParentFrame::ActivatePrevious()
 419 {
 420     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 421 }
 422
 423 // ---------------------------------------------------------------------------
 424 // the MDI parent frame window proc
 425 // ---------------------------------------------------------------------------
 426
 427 WXLRESULT wxMDIParentFrame::MSWWindowProc(WXUINT message,
 428                                      WXWPARAM wParam,
 429                                      WXLPARAM lParam)
 430 {
 431     WXLRESULT rc = 0;
 432     bool processed = false;
 433
 434     switch ( message )
 435     {
 436         case WM_ACTIVATE:
 437             {
 438                 WXWORD state, minimized;
 439                 WXHWND hwnd;
 440                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 441
 442                 processed = HandleActivate(state, minimized != 0, hwnd);
 443             }
 444             break;
 445
 446         case WM_COMMAND:
 447             {
 448                 WXWORD id, cmd;
 449                 WXHWND hwnd;
 450                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 451
 452                 (void)HandleCommand(id, cmd, hwnd);
 453
 454                 // even if the frame didn't process it, there is no need to try it
 455                 // once again (i.e. call wxFrame::HandleCommand()) - we just did it,
 456                 // so pretend we processed the message anyhow
 457                 processed = true;
 458             }
 459
 460             // always pass this message DefFrameProc(), otherwise MDI menu
 461             // commands (and sys commands - more surprisingly!) won't work
 462             MSWDefWindowProc(message, wParam, lParam);
 463             break;
 464
 465         case WM_CREATE:
 466             m_clientWindow = OnCreateClient();
 467             // Uses own style for client style
 468             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 469             {
 470                 wxLogMessage(_("Failed to create MDI parent frame."));
 471
 472                 rc = -1;
 473             }
 474
 475             processed = true;
 476             break;
 477
 478         case WM_ERASEBKGND:
 479             processed = true;
 480
 481             // we erase background ourselves
 482             rc = true;
 483             break;
 484
 485         case WM_SIZE:
 486             // though we don't (usually) resize the MDI client to exactly fit the
 487             // client area we need to pass this one to DefFrameProc to allow the children to show
 488             break;
 489     }
 490
 491     if ( !processed )
 492         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 493
 494     return rc;
 495 }
 496
 497 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 498 {
 499     bool processed = false;
 500
 501     if ( wxWindow::HandleActivate(state, minimized, activate) )
 502     {
 503         // already processed
 504         processed = true;
 505     }
 506
 507     // If this window is an MDI parent, we must also send an OnActivate message
 508     // to the current child.
 509     if ( (m_currentChild != NULL) &&
 510          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 511     {
 512         wxActivateEvent event(wxEVT_ACTIVATE, true, m_currentChild->GetId());
 513         event.SetEventObject( m_currentChild );
 514         if ( m_currentChild->HandleWindowEvent(event) )
 515             processed = true;
 516     }
 517
 518     return processed;
 519 }
 520
 521 bool wxMDIParentFrame::HandleCommand(WXWORD id_, WXWORD cmd, WXHWND hwnd)
 522 {
 523     // sign extend to int from short before comparing with the other int ids
 524     int id = (signed short)id_;
 525
 526     // In case it's e.g. a toolbar.
 527     if ( hwnd )
 528     {
 529         wxWindow *win = wxFindWinFromHandle(hwnd);
 530         if ( win )
 531             return win->MSWCommand(cmd, id);
 532     }
 533
 534     if (wxCurrentPopupMenu)
 535     {
 536         wxMenu *popupMenu = wxCurrentPopupMenu;
 537         wxCurrentPopupMenu = NULL;
 538         if (popupMenu->MSWCommand(cmd, id))
 539             return true;
 540     }
 541
 542     // is it one of standard MDI commands?
 543     WXWPARAM wParam = 0;
 544     WXLPARAM lParam = 0;
 545     int msg;
 546     switch ( id )
 547     {
 548         case IDM_WINDOWCASCADE:
 549             msg = WM_MDICASCADE;
 550             wParam = MDITILE_SKIPDISABLED;
 551             break;
 552
 553         case IDM_WINDOWTILEHOR:
 554             wParam |= MDITILE_HORIZONTAL;
 555             // fall through
 556
 557         case IDM_WINDOWTILEVERT:
 558             if ( !wParam )
 559                 wParam = MDITILE_VERTICAL;
 560             msg = WM_MDITILE;
 561             wParam |= MDITILE_SKIPDISABLED;
 562             break;
 563
 564         case IDM_WINDOWICONS:
 565             msg = WM_MDIICONARRANGE;
 566             break;
 567
 568         case IDM_WINDOWNEXT:
 569             msg = WM_MDINEXT;
 570             lParam = 0;         // next child
 571             break;
 572
 573         case IDM_WINDOWPREV:
 574             msg = WM_MDINEXT;
 575             lParam = 1;         // previous child
 576             break;
 577
 578         default:
 579             msg = 0;
 580     }
 581
 582     if ( msg )
 583     {
 584         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, lParam);
 585
 586         return true;
 587     }
 588
 589     // FIXME VZ: what does this test do??
 590     if (id >= 0xF000)
 591     {
 592         return false; // Get WndProc to call default proc
 593     }
 594
 595     if ( IsMdiCommandId(id) )
 596     {
 597         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 598         while ( node )
 599         {
 600             wxWindow *child = node->GetData();
 601             if ( child->GetHWND() )
 602             {
 603                 int childId = wxGetWindowId(child->GetHWND());
 604                 if ( childId == (signed short)id )
 605                 {
 606                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 607                                    WM_MDIACTIVATE,
 608                                    (WPARAM)child->GetHWND(), 0);
 609                     return true;
 610                 }
 611             }
 612             node = node->GetNext();
 613         }
 614     }
 615     else if ( m_parentFrameActive )
 616     {
 617         return ProcessCommand(id);
 618     }
 619     else if ( m_currentChild )
 620     {
 621         return m_currentChild->HandleCommand(id, cmd, hwnd);
 622     }
 623     else
 624     {
 625         // this shouldn't happen because it means that our messages are being
 626         // lost (they're not sent to the parent frame nor to the children)
 627         wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
 628     }
 629
 630     return false;
 631 }
 632
 633 WXLRESULT wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 634                                         WXWPARAM wParam,
 635                                         WXLPARAM lParam)
 636 {
 637     WXHWND clientWnd;
 638     if ( GetClientWindow() )
 639         clientWnd = GetClientWindow()->GetHWND();
 640     else
 641         clientWnd = 0;
 642
 643     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 644 }
 645
 646 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 647 {
 648     MSG *pMsg = (MSG *)msg;
 649
 650     // first let the current child get it
 651     if ( m_currentChild && m_currentChild->GetHWND() &&
 652          m_currentChild->MSWTranslateMessage(msg) )
 653     {
 654         return true;
 655     }
 656
 657     // then try out accel table (will also check the menu accels)
 658     if ( wxFrame::MSWTranslateMessage(msg) )
 659     {
 660         return true;
 661     }
 662
 663     // finally, check for MDI specific built in accel keys
 664     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 665     {
 666         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 667             return true;
 668     }
 669
 670     return false;
 671 }
 672
 673 // ===========================================================================
 674 // wxMDIChildFrame
 675 // ===========================================================================
 676
 677 void wxMDIChildFrame::Init()
 678 {
 679     m_needsResize = true;
 680     m_needsInitialShow = true;
 681 }
 682
 683 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 684                              wxWindowID id,
 685                              const wxString& title,
 686                              const wxPoint& pos,
 687                              const wxSize& size,
 688                              long style,
 689                              const wxString& name)
 690 {
 691   SetName(name);
 692
 693   if ( id != wxID_ANY )
 694     m_windowId = id;
 695   else
 696     m_windowId = NewControlId();
 697
 698   if ( parent )
 699   {
 700       parent->AddChild(this);
 701   }
 702
 703   int x = pos.x;
 704   int y = pos.y;
 705   int width = size.x;
 706   int height = size.y;
 707
 708   MDICREATESTRUCT mcs;
 709
 710   mcs.szClass = style & wxFULL_REPAINT_ON_RESIZE
 711                     ? wxMDIChildFrameClassName
 712                     : wxMDIChildFrameClassNameNoRedraw;
 713   mcs.szTitle = title.wx_str();
 714   mcs.hOwner = wxGetInstance();
 715   if (x != wxDefaultCoord)
 716       mcs.x = x;
 717   else
 718       mcs.x = CW_USEDEFAULT;
 719
 720   if (y != wxDefaultCoord)
 721       mcs.y = y;
 722   else
 723       mcs.y = CW_USEDEFAULT;
 724
 725   if (width != wxDefaultCoord)
 726       mcs.cx = width;
 727   else
 728       mcs.cx = CW_USEDEFAULT;
 729
 730   if (height != wxDefaultCoord)
 731       mcs.cy = height;
 732   else
 733       mcs.cy = CW_USEDEFAULT;
 734
 735   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
 736   if (style & wxMINIMIZE_BOX)
 737     msflags |= WS_MINIMIZEBOX;
 738   if (style & wxMAXIMIZE_BOX)
 739     msflags |= WS_MAXIMIZEBOX;
 740   if (style & wxRESIZE_BORDER)
 741     msflags |= WS_THICKFRAME;
 742   if (style & wxSYSTEM_MENU)
 743     msflags |= WS_SYSMENU;
 744   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 745     msflags |= WS_MINIMIZE;
 746   if (style & wxMAXIMIZE)
 747     msflags |= WS_MAXIMIZE;
 748   if (style & wxCAPTION)
 749     msflags |= WS_CAPTION;
 750
 751   mcs.style = msflags;
 752
 753   mcs.lParam = 0;
 754
 755   wxWindowCreationHook hook(this);
 756
 757   m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 758                                  WM_MDICREATE, 0, (LPARAM)&mcs);
 759
 760   if ( !m_hWnd )
 761   {
 762       wxLogLastError(_T("WM_MDICREATE"));
 763       return false;
 764   }
 765
 766   SubclassWin(m_hWnd);
 767
 768   return true;
 769 }
 770
 771 wxMDIChildFrame::~wxMDIChildFrame()
 772 {
 773     // if we hadn't been created, there is nothing to destroy
 774     if ( !m_hWnd )
 775         return;
 776
 777     // will be destroyed by DestroyChildren() but reset them before calling it
 778     // to avoid using dangling pointers if a callback comes in the meanwhile
 779 #if wxUSE_TOOLBAR
 780     m_frameToolBar = NULL;
 781 #endif
 782 #if wxUSE_STATUSBAR
 783     m_frameStatusBar = NULL;
 784 #endif // wxUSE_STATUSBAR
 785
 786     DestroyChildren();
 787
 788     RemoveWindowMenu(NULL, m_hMenu);
 789
 790     MSWDestroyWindow();
 791 }
 792
 793 bool wxMDIChildFrame::Show(bool show)
 794 {
 795     m_needsInitialShow = false;
 796
 797     if (!wxFrame::Show(show))
 798         return false;
 799
 800     // KH: Without this call, new MDI children do not become active.
 801     // This was added here after the same BringWindowToTop call was
 802     // removed from wxTopLevelWindow::Show (November 2005)
 803     if ( show )
 804         ::BringWindowToTop(GetHwnd());
 805
 806     // we need to refresh the MDI frame window menu to include (or exclude if
 807     // we've been hidden) this frame
 808     wxMDIParentFrame *parent = GetMDIParent();
 809     MDISetMenu(parent->GetClientWindow(), NULL, NULL);
 810
 811     return true;
 812 }
 813
 814 // Set the client size (i.e. leave the calculation of borders etc.
 815 // to wxWidgets)
 816 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 817 {
 818   HWND hWnd = GetHwnd();
 819
 820   RECT rect;
 821   ::GetClientRect(hWnd, &rect);
 822
 823   RECT rect2;
 824   GetWindowRect(hWnd, &rect2);
 825
 826   // Find the difference between the entire window (title bar and all)
 827   // and the client area; add this to the new client size to move the
 828   // window
 829   int actual_width = rect2.right - rect2.left - rect.right + width;
 830   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 831
 832 #if wxUSE_STATUSBAR
 833   if (GetStatusBar() && GetStatusBar()->IsShown())
 834   {
 835     int sx, sy;
 836     GetStatusBar()->GetSize(&sx, &sy);
 837     actual_height += sy;
 838   }
 839 #endif // wxUSE_STATUSBAR
 840
 841   POINT point;
 842   point.x = rect2.left;
 843   point.y = rect2.top;
 844
 845   // If there's an MDI parent, must subtract the parent's top left corner
 846   // since MoveWindow moves relative to the parent
 847   wxMDIParentFrame *mdiParent = GetMDIParent();
 848   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 849
 850   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)true);
 851
 852   wxSize size(width, height);
 853   wxSizeEvent event(size, m_windowId);
 854   event.SetEventObject( this );
 855   HandleWindowEvent(event);
 856 }
 857
 858 // Unlike other wxTopLevelWindowBase, the mdi child's "GetPosition" is not the
 859 //  same as its GetScreenPosition
 860 void wxMDIChildFrame::DoGetScreenPosition(int *x, int *y) const
 861 {
 862   HWND hWnd = GetHwnd();
 863
 864   RECT rect;
 865   ::GetWindowRect(hWnd, &rect);
 866   if (x)
 867      *x = rect.left;
 868   if (y)
 869      *y = rect.top;
 870 }
 871
 872
 873 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 874 {
 875   RECT rect;
 876   GetWindowRect(GetHwnd(), &rect);
 877   POINT point;
 878   point.x = rect.left;
 879   point.y = rect.top;
 880
 881   // Since we now have the absolute screen coords,
 882   // if there's a parent we must subtract its top left corner
 883   wxMDIParentFrame *mdiParent = GetMDIParent();
 884   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 885
 886   if (x)
 887       *x = point.x;
 888   if (y)
 889       *y = point.y;
 890 }
 891
 892 void wxMDIChildFrame::InternalSetMenuBar()
 893 {
 894     wxMDIParentFrame *parent = GetMDIParent();
 895
 896     InsertWindowMenu(parent->GetClientWindow(),
 897                      m_hMenu, GetMDIWindowMenu(parent));
 898
 899     parent->m_parentFrameActive = false;
 900 }
 901
 902 void wxMDIChildFrame::DetachMenuBar()
 903 {
 904     RemoveWindowMenu(NULL, m_hMenu);
 905     wxFrame::DetachMenuBar();
 906 }
 907
 908 WXHICON wxMDIChildFrame::GetDefaultIcon() const
 909 {
 910     // we don't have any standard icons (any more)
 911     return (WXHICON)0;
 912 }
 913
 914 // ---------------------------------------------------------------------------
 915 // MDI operations
 916 // ---------------------------------------------------------------------------
 917
 918 void wxMDIChildFrame::Maximize(bool maximize)
 919 {
 920     wxMDIParentFrame *parent = GetMDIParent();
 921     if ( parent && parent->GetClientWindow() )
 922     {
 923         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 924                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
 925                       (WPARAM)GetHwnd(), 0);
 926     }
 927 }
 928
 929 void wxMDIChildFrame::Restore()
 930 {
 931     wxMDIParentFrame *parent = GetMDIParent();
 932     if ( parent && parent->GetClientWindow() )
 933     {
 934         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
 935                       (WPARAM) GetHwnd(), 0);
 936     }
 937 }
 938
 939 void wxMDIChildFrame::Activate()
 940 {
 941     wxMDIParentFrame *parent = GetMDIParent();
 942     if ( parent && parent->GetClientWindow() )
 943     {
 944         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
 945                       (WPARAM) GetHwnd(), 0);
 946     }
 947 }
 948
 949 // ---------------------------------------------------------------------------
 950 // MDI window proc and message handlers
 951 // ---------------------------------------------------------------------------
 952
 953 WXLRESULT wxMDIChildFrame::MSWWindowProc(WXUINT message,
 954                                     WXWPARAM wParam,
 955                                     WXLPARAM lParam)
 956 {
 957     WXLRESULT rc = 0;
 958     bool processed = false;
 959
 960     switch ( message )
 961     {
 962         case WM_COMMAND:
 963             {
 964                 WORD id, cmd;
 965                 WXHWND hwnd;
 966                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 967                               &id, &hwnd, &cmd);
 968
 969                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 970             }
 971             break;
 972
 973         case WM_GETMINMAXINFO:
 974             processed = HandleGetMinMaxInfo((MINMAXINFO *)lParam);
 975             break;
 976
 977         case WM_MDIACTIVATE:
 978             {
 979                 WXWORD act;
 980                 WXHWND hwndAct, hwndDeact;
 981                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
 982
 983                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
 984             }
 985             // fall through
 986
 987         case WM_MOVE:
 988             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
 989             // scrollbars if necessary
 990
 991             // fall through
 992
 993         case WM_SIZE:
 994             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
 995             // things happen
 996             MSWDefWindowProc(message, wParam, lParam);
 997             break;
 998
 999         case WM_SYSCOMMAND:
1000             // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
1001             // the message (the base class version does not)
1002             return MSWDefWindowProc(message, wParam, lParam);
1003
1004         case WM_WINDOWPOSCHANGING:
1005             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
1006             break;
1007     }
1008
1009     if ( !processed )
1010         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
1011
1012     return rc;
1013 }
1014
1015 bool wxMDIChildFrame::HandleCommand(WXWORD id_, WXWORD cmd, WXHWND hwnd)
1016 {
1017     // sign extend to int from short before comparing with the other int ids
1018     int id = (signed short)id_;
1019
1020     // In case it's e.g. a toolbar.
1021     if ( hwnd )
1022     {
1023         wxWindow *win = wxFindWinFromHandle(hwnd);
1024         if (win)
1025             return win->MSWCommand(cmd, id);
1026     }
1027
1028     if (wxCurrentPopupMenu)
1029     {
1030         wxMenu *popupMenu = wxCurrentPopupMenu;
1031         wxCurrentPopupMenu = NULL;
1032         if (popupMenu->MSWCommand(cmd, id))
1033             return true;
1034     }
1035
1036     bool processed;
1037     if (GetMenuBar() && GetMenuBar()->FindItem(id))
1038     {
1039         processed = ProcessCommand(id);
1040     }
1041     else
1042     {
1043         processed = false;
1044     }
1045
1046     return processed;
1047 }
1048
1049 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
1050                                         WXHWND hwndAct,
1051                                         WXHWND hwndDeact)
1052 {
1053     wxMDIParentFrame *parent = GetMDIParent();
1054
1055     HMENU menuToSet = 0;
1056
1057     bool activated;
1058
1059     if ( m_hWnd == hwndAct )
1060     {
1061         activated = true;
1062         parent->m_currentChild = this;
1063
1064         HMENU child_menu = (HMENU)GetWinMenu();
1065         if ( child_menu )
1066         {
1067             parent->m_parentFrameActive = false;
1068
1069             menuToSet = child_menu;
1070         }
1071     }
1072     else if ( m_hWnd == hwndDeact )
1073     {
1074         wxASSERT_MSG( parent->m_currentChild == this,
1075                       wxT("can't deactivate MDI child which wasn't active!") );
1076
1077         activated = false;
1078         parent->m_currentChild = NULL;
1079
1080         HMENU parent_menu = (HMENU)parent->GetWinMenu();
1081
1082         // activate the the parent menu only when there is no other child
1083         // that has been activated
1084         if ( parent_menu && !hwndAct )
1085         {
1086             parent->m_parentFrameActive = true;
1087
1088             menuToSet = parent_menu;
1089         }
1090     }
1091     else
1092     {
1093         // we have nothing to do with it
1094         return false;
1095     }
1096
1097     if ( menuToSet )
1098     {
1099         MDISetMenu(parent->GetClientWindow(),
1100                    menuToSet, GetMDIWindowMenu(parent));
1101     }
1102
1103     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
1104     event.SetEventObject( this );
1105
1106     ResetWindowStyle((void *)NULL);
1107
1108     return HandleWindowEvent(event);
1109 }
1110
1111 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
1112 {
1113     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1114
1115     if (!(lpPos->flags & SWP_NOSIZE))
1116     {
1117         RECT rectClient;
1118         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1119         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1120         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1121         {
1122             ::AdjustWindowRectEx(&rectClient, dwStyle, false, dwExStyle);
1123             lpPos->x = rectClient.left;
1124             lpPos->y = rectClient.top;
1125             lpPos->cx = rectClient.right - rectClient.left;
1126             lpPos->cy = rectClient.bottom - rectClient.top;
1127         }
1128     }
1129
1130     return false;
1131 }
1132
1133 bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo)
1134 {
1135     MINMAXINFO *info = (MINMAXINFO *)mmInfo;
1136
1137     // let the default window proc calculate the size of MDI children
1138     // frames because it is based on the size of the MDI client window,
1139     // not on the values specified in wxWindow m_max variables
1140     bool processed = MSWDefWindowProc(WM_GETMINMAXINFO, 0, (LPARAM)mmInfo) != 0;
1141
1142     int minWidth = GetMinWidth(),
1143         minHeight = GetMinHeight();
1144
1145     // but allow GetSizeHints() to set the min size
1146     if ( minWidth != wxDefaultCoord )
1147     {
1148         info->ptMinTrackSize.x = minWidth;
1149
1150         processed = true;
1151     }
1152
1153     if ( minHeight != wxDefaultCoord )
1154     {
1155         info->ptMinTrackSize.y = minHeight;
1156
1157         processed = true;
1158     }
1159
1160     return processed;
1161 }
1162
1163 // ---------------------------------------------------------------------------
1164 // MDI specific message translation/preprocessing
1165 // ---------------------------------------------------------------------------
1166
1167 WXLRESULT wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
1168 {
1169     return DefMDIChildProc(GetHwnd(),
1170                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1171 }
1172
1173 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1174 {
1175     // we must pass the parent frame to ::TranslateAccelerator(), otherwise it
1176     // doesn't do its job correctly for MDI child menus
1177     return MSWDoTranslateMessage(GetMDIParent(), msg);
1178 }
1179
1180 // ---------------------------------------------------------------------------
1181 // misc
1182 // ---------------------------------------------------------------------------
1183
1184 void wxMDIChildFrame::MSWDestroyWindow()
1185 {
1186     wxMDIParentFrame *parent = GetMDIParent();
1187
1188     // Must make sure this handle is invalidated (set to NULL) since all sorts
1189     // of things could happen after the child client is destroyed, but before
1190     // the wxFrame is destroyed.
1191
1192     HWND oldHandle = (HWND)GetHWND();
1193     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1194                 (WPARAM)oldHandle, 0);
1195
1196     if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
1197         ResetWindowStyle((void*) NULL);
1198
1199     if (m_hMenu)
1200     {
1201         ::DestroyMenu((HMENU) m_hMenu);
1202         m_hMenu = 0;
1203     }
1204     wxRemoveHandleAssociation(this);
1205     m_hWnd = 0;
1206 }
1207
1208 // Change the client window's extended style so we don't get a client edge
1209 // style when a child is maximised (a double border looks silly.)
1210 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1211 {
1212     RECT *rect = (RECT *)vrect;
1213     wxMDIParentFrame* pFrameWnd = GetMDIParent();
1214     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1215
1216     if (!pChild || (pChild == this))
1217     {
1218         HWND hwndClient = GetWinHwnd(pFrameWnd->GetClientWindow());
1219         DWORD dwStyle = ::GetWindowLong(hwndClient, GWL_EXSTYLE);
1220
1221         // we want to test whether there is a maximized child, so just set
1222         // dwThisStyle to 0 if there is no child at all
1223         DWORD dwThisStyle = pChild
1224             ? ::GetWindowLong(GetWinHwnd(pChild), GWL_STYLE) : 0;
1225         DWORD dwNewStyle = dwStyle;
1226         if ( dwThisStyle & WS_MAXIMIZE )
1227             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1228         else
1229             dwNewStyle |= WS_EX_CLIENTEDGE;
1230
1231         if (dwStyle != dwNewStyle)
1232         {
1233             // force update of everything
1234             ::RedrawWindow(hwndClient, NULL, NULL,
1235                            RDW_INVALIDATE | RDW_ALLCHILDREN);
1236             ::SetWindowLong(hwndClient, GWL_EXSTYLE, dwNewStyle);
1237             ::SetWindowPos(hwndClient, NULL, 0, 0, 0, 0,
1238                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1239                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1240                            SWP_NOCOPYBITS);
1241             if (rect)
1242                 ::GetClientRect(hwndClient, rect);
1243
1244             return true;
1245         }
1246     }
1247
1248     return false;
1249 }
1250
1251 // ===========================================================================
1252 // wxMDIClientWindow: the window of predefined (by Windows) class which
1253 // contains the child frames
1254 // ===========================================================================
1255
1256 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1257 {
1258     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
1259
1260     CLIENTCREATESTRUCT ccs;
1261     m_windowStyle = style;
1262     m_parent = parent;
1263
1264     ccs.hWindowMenu = GetMDIWindowMenu(parent);
1265     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1266
1267     DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD |
1268                     WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
1269
1270     if ( style & wxHSCROLL )
1271         msStyle |= WS_HSCROLL;
1272     if ( style & wxVSCROLL )
1273         msStyle |= WS_VSCROLL;
1274
1275     DWORD exStyle = WS_EX_CLIENTEDGE;
1276
1277     wxWindowCreationHook hook(this);
1278     m_hWnd = (WXHWND)::CreateWindowEx
1279                        (
1280                         exStyle,
1281                         wxT("MDICLIENT"),
1282                         NULL,
1283                         msStyle,
1284                         0, 0, 0, 0,
1285                         GetWinHwnd(parent),
1286                         NULL,
1287                         wxGetInstance(),
1288                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1289     if ( !m_hWnd )
1290     {
1291         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1292
1293         return false;
1294     }
1295
1296     SubclassWin(m_hWnd);
1297
1298     return true;
1299 }
1300
1301 // Explicitly call default scroll behaviour
1302 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1303 {
1304     // Note: for client windows, the scroll position is not set in
1305     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1306     // scroll position we're at.
1307     // This makes it hard to paint patterns or bitmaps in the background,
1308     // and have the client area scrollable as well.
1309
1310     if ( event.GetOrientation() == wxHORIZONTAL )
1311         m_scrollX = event.GetPosition(); // Always returns zero!
1312     else
1313         m_scrollY = event.GetPosition(); // Always returns zero!
1314
1315     event.Skip();
1316 }
1317
1318 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1319 {
1320     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1321     // client area, you can end up with a non-refreshed portion in the client window
1322     // (see OGL studio sample). So check if the position is changed and if so,
1323     // redraw the MDI child frames.
1324
1325     const wxPoint oldPos = GetPosition();
1326
1327     wxWindow::DoSetSize(x, y, width, height, sizeFlags | wxSIZE_FORCE);
1328
1329     const wxPoint newPos = GetPosition();
1330
1331     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1332     {
1333         if (GetParent())
1334         {
1335             wxWindowList::compatibility_iterator node = GetParent()->GetChildren().GetFirst();
1336             while (node)
1337             {
1338                 wxWindow *child = node->GetData();
1339                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1340                 {
1341                    ::RedrawWindow(GetHwndOf(child),
1342                                   NULL,
1343                                   NULL,
1344                                   RDW_FRAME |
1345                                   RDW_ALLCHILDREN |
1346                                   RDW_INVALIDATE);
1347                 }
1348                 node = node->GetNext();
1349             }
1350         }
1351     }
1352 }
1353
1354 void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
1355 {
1356     // wxMSW prior to 2.5.3 created MDI child frames as visible, which resulted
1357     // in flicker e.g. when the frame contained controls with non-trivial
1358     // layout. Since 2.5.3, the frame is created hidden as all other top level
1359     // windows. In order to maintain backward compatibility, the frame is shown
1360     // in OnIdle, unless Show(false) was called by the programmer before.
1361     if ( m_needsInitialShow )
1362     {
1363         Show(true);
1364     }
1365
1366     // MDI child frames get their WM_SIZE when they're constructed but at this
1367     // moment they don't have any children yet so all child windows will be
1368     // positioned incorrectly when they are added later - to fix this, we
1369     // generate an artificial size event here
1370     if ( m_needsResize )
1371     {
1372         m_needsResize = false; // avoid any possibility of recursion
1373
1374         SendSizeEvent();
1375     }
1376
1377     event.Skip();
1378 }
1379
1380 // ---------------------------------------------------------------------------
1381 // non member functions
1382 // ---------------------------------------------------------------------------
1383
1384 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1385 {
1386     if ( hmenuFrame || hmenuWindow )
1387     {
1388         if ( !::SendMessage(GetWinHwnd(win),
1389                             WM_MDISETMENU,
1390                             (WPARAM)hmenuFrame,
1391                             (LPARAM)hmenuWindow) )
1392         {
1393 #ifdef __WXDEBUG__
1394             DWORD err = ::GetLastError();
1395             if ( err )
1396                 wxLogApiError(_T("SendMessage(WM_MDISETMENU)"), err);
1397 #endif // __WXDEBUG__
1398         }
1399     }
1400
1401     // update menu bar of the parent window
1402     wxWindow *parent = win->GetParent();
1403     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1404
1405     ::SendMessage(GetWinHwnd(win), WM_MDIREFRESHMENU, 0, 0L);
1406
1407     ::DrawMenuBar(GetWinHwnd(parent));
1408 }
1409
1410 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
1411 {
1412     // Try to insert Window menu in front of Help, otherwise append it.
1413     HMENU hmenu = (HMENU)menu;
1414
1415     if (subMenu)
1416     {
1417         int N = GetMenuItemCount(hmenu);
1418         bool success = false;
1419         for ( int i = 0; i < N; i++ )
1420         {
1421             wxChar buf[256];
1422             int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1423             if ( chars == 0 )
1424             {
1425                 wxLogLastError(wxT("GetMenuString"));
1426
1427                 continue;
1428             }
1429
1430             wxString strBuf(buf);
1431             if ( wxStripMenuCodes(strBuf) == wxGetStockLabel(wxID_HELP,false) )
1432             {
1433                 success = true;
1434                 ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1435                              (UINT_PTR)subMenu, _("&Window").wx_str());
1436                 break;
1437             }
1438         }
1439
1440         if ( !success )
1441         {
1442             ::AppendMenu(hmenu, MF_POPUP,
1443                          (UINT_PTR)subMenu, _("&Window").wx_str());
1444         }
1445     }
1446
1447     MDISetMenu(win, hmenu, subMenu);
1448 }
1449
1450 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu)
1451 {
1452     HMENU hMenu = (HMENU)menu;
1453
1454     if ( hMenu )
1455     {
1456         wxChar buf[1024];
1457
1458         int N = ::GetMenuItemCount(hMenu);
1459         for ( int i = 0; i < N; i++ )
1460         {
1461             if ( !::GetMenuString(hMenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) )
1462             {
1463                 // Ignore successful read of menu string with length 0 which
1464                 // occurs, for example, for a maximized MDI childs system menu
1465                 if ( ::GetLastError() != 0 )
1466                 {
1467                     wxLogLastError(wxT("GetMenuString"));
1468                 }
1469
1470                 continue;
1471             }
1472
1473             if ( wxStrcmp(buf, _("&Window")) == 0 )
1474             {
1475                 if ( !::RemoveMenu(hMenu, i, MF_BYPOSITION) )
1476                 {
1477                     wxLogLastError(wxT("RemoveMenu"));
1478                 }
1479
1480                 break;
1481             }
1482         }
1483     }
1484
1485     if ( win )
1486     {
1487         // we don't change the windows menu, but we update the main one
1488         MDISetMenu(win, hMenu, NULL);
1489     }
1490 }
1491
1492 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1493                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1494 {
1495     *activate = true;
1496     *hwndAct = (WXHWND)lParam;
1497     *hwndDeact = (WXHWND)wParam;
1498 }
1499
1500 #endif // wxUSE_MDI && !defined(__WXUNIVERSAL__)