src/msw/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/mdi.cpp
   3 // Purpose:     MDI classes for wxMSW
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_MDI && !defined(__WXUNIVERSAL__)
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/setup.h"
  31     #include "wx/frame.h"
  32     #include "wx/menu.h"
  33     #include "wx/app.h"
  34     #include "wx/utils.h"
  35     #include "wx/dialog.h"
  36     #if wxUSE_STATUSBAR
  37         #include "wx/statusbr.h"
  38     #endif
  39     #include "wx/settings.h"
  40     #include "wx/intl.h"
  41     #include "wx/log.h"
  42 #endif
  43
  44 #include "wx/stockitem.h"
  45 #include "wx/mdi.h"
  46 #include "wx/msw/private.h"
  47
  48 #if wxUSE_STATUSBAR && wxUSE_NATIVE_STATUSBAR
  49     #include "wx/msw/statbr95.h"
  50 #endif
  51
  52 #if wxUSE_TOOLBAR
  53     #include "wx/toolbar.h"
  54 #endif // wxUSE_TOOLBAR
  55
  56 #include <string.h>
  57
  58 // ---------------------------------------------------------------------------
  59 // global variables
  60 // ---------------------------------------------------------------------------
  61
  62 extern wxMenu *wxCurrentPopupMenu;
  63
  64 extern const wxChar *wxMDIFrameClassName;   // from app.cpp
  65 extern const wxChar *wxMDIChildFrameClassName;
  66 extern const wxChar *wxMDIChildFrameClassNameNoRedraw;
  67 extern void wxAssociateWinWithHandle(HWND hWnd, wxWindow *win);
  68 extern void wxRemoveHandleAssociation(wxWindow *win);
  69
  70 static HWND invalidHandle = 0;
  71
  72 // ---------------------------------------------------------------------------
  73 // constants
  74 // ---------------------------------------------------------------------------
  75
  76 static const int IDM_WINDOWTILEHOR  = 4001;
  77 static const int IDM_WINDOWCASCADE = 4002;
  78 static const int IDM_WINDOWICONS = 4003;
  79 static const int IDM_WINDOWNEXT = 4004;
  80 static const int IDM_WINDOWTILEVERT = 4005;
  81 static const int IDM_WINDOWPREV = 4006;
  82
  83 // This range gives a maximum of 500 MDI children. Should be enough :-)
  84 static const int wxFIRST_MDI_CHILD = 4100;
  85 static const int wxLAST_MDI_CHILD = 4600;
  86
  87 // ---------------------------------------------------------------------------
  88 // private functions
  89 // ---------------------------------------------------------------------------
  90
  91 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
  92 // of the parent of win (which is supposed to be the MDI client window)
  93 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
  94
  95 // insert the window menu (subMenu) into menu just before "Help" submenu or at
  96 // the very end if not found
  97 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
  98
  99 // Remove the window menu
 100 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu);
 101
 102 // is this an id of an MDI child?
 103 inline bool IsMdiCommandId(int id)
 104 {
 105     return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
 106 }
 107
 108 // unpack the parameters of WM_MDIACTIVATE message
 109 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
 110                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
 111
 112 // return the HMENU of the MDI menu
 113 static inline HMENU GetMDIWindowMenu(wxMDIParentFrame *frame)
 114 {
 115     wxMenu *menu = frame->GetWindowMenu();
 116     return menu ? GetHmenuOf(menu) : 0;
 117 }
 118
 119 // ===========================================================================
 120 // implementation
 121 // ===========================================================================
 122
 123 // ---------------------------------------------------------------------------
 124 // wxWin macros
 125 // ---------------------------------------------------------------------------
 126
 127 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 128 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 129 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 130
 131 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 132     EVT_SIZE(wxMDIParentFrame::OnSize)
 133     EVT_ICONIZE(wxMDIParentFrame::OnIconized)
 134     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 135 END_EVENT_TABLE()
 136
 137 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 138     EVT_IDLE(wxMDIChildFrame::OnIdle)
 139 END_EVENT_TABLE()
 140
 141 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 142     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 143 END_EVENT_TABLE()
 144
 145 // ===========================================================================
 146 // wxMDIParentFrame: the frame which contains the client window which manages
 147 // the children
 148 // ===========================================================================
 149
 150 wxMDIParentFrame::wxMDIParentFrame()
 151 {
 152     m_clientWindow = NULL;
 153     m_currentChild = NULL;
 154     m_windowMenu = (wxMenu*) NULL;
 155     m_parentFrameActive = true;
 156 }
 157
 158 bool wxMDIParentFrame::Create(wxWindow *parent,
 159                               wxWindowID id,
 160                               const wxString& title,
 161                               const wxPoint& pos,
 162                               const wxSize& size,
 163                               long style,
 164                               const wxString& name)
 165 {
 166   m_clientWindow = NULL;
 167   m_currentChild = NULL;
 168
 169   // this style can be used to prevent a window from having the standard MDI
 170   // "Window" menu
 171   if ( style & wxFRAME_NO_WINDOW_MENU )
 172   {
 173       m_windowMenu = (wxMenu *)NULL;
 174   }
 175   else // normal case: we have the window menu, so construct it
 176   {
 177       m_windowMenu = new wxMenu;
 178
 179       m_windowMenu->Append(IDM_WINDOWCASCADE, _("&Cascade"));
 180       m_windowMenu->Append(IDM_WINDOWTILEHOR, _("Tile &Horizontally"));
 181       m_windowMenu->Append(IDM_WINDOWTILEVERT, _("Tile &Vertically"));
 182       m_windowMenu->AppendSeparator();
 183       m_windowMenu->Append(IDM_WINDOWICONS, _("&Arrange Icons"));
 184       m_windowMenu->Append(IDM_WINDOWNEXT, _("&Next"));
 185       m_windowMenu->Append(IDM_WINDOWPREV, _("&Previous"));
 186   }
 187
 188   m_parentFrameActive = true;
 189
 190   if (!parent)
 191     wxTopLevelWindows.Append(this);
 192
 193   SetName(name);
 194   m_windowStyle = style;
 195
 196   if ( parent )
 197       parent->AddChild(this);
 198
 199   if ( id != wxID_ANY )
 200     m_windowId = id;
 201   else
 202     m_windowId = NewControlId();
 203
 204   WXDWORD exflags;
 205   WXDWORD msflags = MSWGetCreateWindowFlags(&exflags);
 206   msflags &= ~WS_VSCROLL;
 207   msflags &= ~WS_HSCROLL;
 208
 209   if ( !wxWindow::MSWCreate(wxMDIFrameClassName,
 210                             title,
 211                             pos, size,
 212                             msflags,
 213                             exflags) )
 214   {
 215       return false;
 216   }
 217
 218   // unlike (almost?) all other windows, frames are created hidden
 219   m_isShown = false;
 220
 221   return true;
 222 }
 223
 224 wxMDIParentFrame::~wxMDIParentFrame()
 225 {
 226     // see comment in ~wxMDIChildFrame
 227 #if wxUSE_TOOLBAR
 228     m_frameToolBar = NULL;
 229 #endif
 230 #if wxUSE_STATUSBAR
 231     m_frameStatusBar = NULL;
 232 #endif // wxUSE_STATUSBAR
 233
 234     DestroyChildren();
 235
 236     if (m_windowMenu)
 237     {
 238         delete m_windowMenu;
 239         m_windowMenu = (wxMenu*) NULL;
 240     }
 241
 242     // the MDI frame menubar is not automatically deleted by Windows unlike for
 243     // the normal frames
 244     if ( m_hMenu )
 245     {
 246         ::DestroyMenu((HMENU)m_hMenu);
 247         m_hMenu = (WXHMENU)NULL;
 248     }
 249
 250     if ( m_clientWindow )
 251     {
 252         if ( m_clientWindow->MSWGetOldWndProc() )
 253             m_clientWindow->UnsubclassWin();
 254
 255         m_clientWindow->SetHWND(0);
 256         delete m_clientWindow;
 257     }
 258 }
 259
 260 #if wxUSE_MENUS_NATIVE
 261
 262 void wxMDIParentFrame::InternalSetMenuBar()
 263 {
 264     m_parentFrameActive = true;
 265
 266     InsertWindowMenu(GetClientWindow(), m_hMenu, GetMDIWindowMenu(this));
 267 }
 268
 269 #endif // wxUSE_MENUS_NATIVE
 270
 271 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 272 {
 273     if (m_windowMenu)
 274     {
 275         if (GetMenuBar())
 276         {
 277             // Remove old window menu
 278             RemoveWindowMenu(GetClientWindow(), m_hMenu);
 279         }
 280
 281         delete m_windowMenu;
 282         m_windowMenu = (wxMenu*) NULL;
 283     }
 284
 285     if (menu)
 286     {
 287         m_windowMenu = menu;
 288         if (GetMenuBar())
 289         {
 290             InsertWindowMenu(GetClientWindow(), m_hMenu,
 291                              GetHmenuOf(m_windowMenu));
 292         }
 293     }
 294 }
 295
 296 void wxMDIParentFrame::DoMenuUpdates(wxMenu* menu)
 297 {
 298     wxMDIChildFrame *child = GetActiveChild();
 299     if ( child )
 300     {
 301         wxEvtHandler* source = child->GetEventHandler();
 302         wxMenuBar* bar = child->GetMenuBar();
 303
 304         if (menu)
 305         {
 306             menu->UpdateUI(source);
 307         }
 308         else
 309         {
 310             if ( bar != NULL )
 311             {
 312                 int nCount = bar->GetMenuCount();
 313                 for (int n = 0; n < nCount; n++)
 314                     bar->GetMenu(n)->UpdateUI(source);
 315             }
 316         }
 317     }
 318     else
 319     {
 320         wxFrameBase::DoMenuUpdates(menu);
 321     }
 322 }
 323
 324 void wxMDIParentFrame::UpdateClientSize()
 325 {
 326     if ( GetClientWindow() )
 327     {
 328         int width, height;
 329         GetClientSize(&width, &height);
 330
 331         GetClientWindow()->SetSize(0, 0, width, height);
 332     }
 333 }
 334
 335 void wxMDIParentFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 336 {
 337     UpdateClientSize();
 338
 339     // do not call event.Skip() here, it somehow messes up MDI client window
 340 }
 341
 342 void wxMDIParentFrame::OnIconized(wxIconizeEvent& event)
 343 {
 344     event.Skip();
 345
 346     if ( !event.Iconized() )
 347     {
 348         UpdateClientSize();
 349     }
 350 }
 351
 352 // Returns the active MDI child window
 353 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 354 {
 355     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 356                                     WM_MDIGETACTIVE, 0, 0L);
 357     if ( hWnd == 0 )
 358         return NULL;
 359     else
 360         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 361 }
 362
 363 // Create the client window class (don't Create the window, just return a new
 364 // class)
 365 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 366 {
 367     return new wxMDIClientWindow;
 368 }
 369
 370 // Responds to colour changes, and passes event on to children.
 371 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 372 {
 373     if ( m_clientWindow )
 374     {
 375         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 376         m_clientWindow->Refresh();
 377     }
 378
 379     event.Skip();
 380 }
 381
 382 WXHICON wxMDIParentFrame::GetDefaultIcon() const
 383 {
 384     // we don't have any standard icons (any more)
 385     return (WXHICON)0;
 386 }
 387
 388 // ---------------------------------------------------------------------------
 389 // MDI operations
 390 // ---------------------------------------------------------------------------
 391
 392 void wxMDIParentFrame::Cascade()
 393 {
 394     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 395 }
 396
 397 void wxMDIParentFrame::Tile(wxOrientation orient)
 398 {
 399     wxASSERT_MSG( orient == wxHORIZONTAL || orient == wxVERTICAL,
 400                   _T("invalid orientation value") );
 401
 402     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE,
 403                   orient == wxHORIZONTAL ? MDITILE_HORIZONTAL
 404                                          : MDITILE_VERTICAL, 0);
 405 }
 406
 407 void wxMDIParentFrame::ArrangeIcons()
 408 {
 409     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 410 }
 411
 412 void wxMDIParentFrame::ActivateNext()
 413 {
 414     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 415 }
 416
 417 void wxMDIParentFrame::ActivatePrevious()
 418 {
 419     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 420 }
 421
 422 // ---------------------------------------------------------------------------
 423 // the MDI parent frame window proc
 424 // ---------------------------------------------------------------------------
 425
 426 WXLRESULT wxMDIParentFrame::MSWWindowProc(WXUINT message,
 427                                      WXWPARAM wParam,
 428                                      WXLPARAM lParam)
 429 {
 430     WXLRESULT rc = 0;
 431     bool processed = false;
 432
 433     switch ( message )
 434     {
 435         case WM_ACTIVATE:
 436             {
 437                 WXWORD state, minimized;
 438                 WXHWND hwnd;
 439                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 440
 441                 processed = HandleActivate(state, minimized != 0, hwnd);
 442             }
 443             break;
 444
 445         case WM_COMMAND:
 446             {
 447                 WXWORD id, cmd;
 448                 WXHWND hwnd;
 449                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 450
 451                 (void)HandleCommand(id, cmd, hwnd);
 452
 453                 // even if the frame didn't process it, there is no need to try it
 454                 // once again (i.e. call wxFrame::HandleCommand()) - we just did it,
 455                 // so pretend we processed the message anyhow
 456                 processed = true;
 457             }
 458
 459             // always pass this message DefFrameProc(), otherwise MDI menu
 460             // commands (and sys commands - more surprisingly!) won't work
 461             MSWDefWindowProc(message, wParam, lParam);
 462             break;
 463
 464         case WM_CREATE:
 465             m_clientWindow = OnCreateClient();
 466             // Uses own style for client style
 467             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 468             {
 469                 wxLogMessage(_("Failed to create MDI parent frame."));
 470
 471                 rc = -1;
 472             }
 473
 474             processed = true;
 475             break;
 476
 477         case WM_ERASEBKGND:
 478             processed = true;
 479
 480             // we erase background ourselves
 481             rc = true;
 482             break;
 483
 484         case WM_MENUSELECT:
 485             {
 486                 WXWORD item, flags;
 487                 WXHMENU hmenu;
 488                 UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
 489
 490                 if ( m_parentFrameActive )
 491                 {
 492                     processed = HandleMenuSelect(item, flags, hmenu);
 493                 }
 494                 else if (m_currentChild)
 495                 {
 496                     processed = m_currentChild->
 497                         HandleMenuSelect(item, flags, hmenu);
 498                 }
 499             }
 500             break;
 501
 502         case WM_SIZE:
 503             // though we don't (usually) resize the MDI client to exactly fit the
 504             // client area we need to pass this one to DefFrameProc to allow the children to show
 505             break;
 506     }
 507
 508     if ( !processed )
 509         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 510
 511     return rc;
 512 }
 513
 514 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 515 {
 516     bool processed = false;
 517
 518     if ( wxWindow::HandleActivate(state, minimized, activate) )
 519     {
 520         // already processed
 521         processed = true;
 522     }
 523
 524     // If this window is an MDI parent, we must also send an OnActivate message
 525     // to the current child.
 526     if ( (m_currentChild != NULL) &&
 527          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 528     {
 529         wxActivateEvent event(wxEVT_ACTIVATE, true, m_currentChild->GetId());
 530         event.SetEventObject( m_currentChild );
 531         if ( m_currentChild->GetEventHandler()->ProcessEvent(event) )
 532             processed = true;
 533     }
 534
 535     return processed;
 536 }
 537
 538 bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 539 {
 540     // In case it's e.g. a toolbar.
 541     if ( hwnd )
 542     {
 543         wxWindow *win = wxFindWinFromHandle(hwnd);
 544         if ( win )
 545             return win->MSWCommand(cmd, id);
 546     }
 547
 548     // is it one of standard MDI commands?
 549     WXWPARAM wParam = 0;
 550     WXLPARAM lParam = 0;
 551     int msg;
 552     switch ( id )
 553     {
 554         case IDM_WINDOWCASCADE:
 555             msg = WM_MDICASCADE;
 556             wParam = MDITILE_SKIPDISABLED;
 557             break;
 558
 559         case IDM_WINDOWTILEHOR:
 560             wParam |= MDITILE_HORIZONTAL;
 561             // fall through
 562
 563         case IDM_WINDOWTILEVERT:
 564             if ( !wParam )
 565                 wParam = MDITILE_VERTICAL;
 566             msg = WM_MDITILE;
 567             wParam |= MDITILE_SKIPDISABLED;
 568             break;
 569
 570         case IDM_WINDOWICONS:
 571             msg = WM_MDIICONARRANGE;
 572             break;
 573
 574         case IDM_WINDOWNEXT:
 575             msg = WM_MDINEXT;
 576             lParam = 0;         // next child
 577             break;
 578
 579         case IDM_WINDOWPREV:
 580             msg = WM_MDINEXT;
 581             lParam = 1;         // previous child
 582             break;
 583
 584         default:
 585             msg = 0;
 586     }
 587
 588     if ( msg )
 589     {
 590         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, lParam);
 591
 592         return true;
 593     }
 594
 595     // FIXME VZ: what does this test do??
 596     if (id >= 0xF000)
 597     {
 598         return false; // Get WndProc to call default proc
 599     }
 600
 601     if ( IsMdiCommandId(id) )
 602     {
 603         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 604         while ( node )
 605         {
 606             wxWindow *child = node->GetData();
 607             if ( child->GetHWND() )
 608             {
 609                 long childId = wxGetWindowId(child->GetHWND());
 610                 if (childId == (long)id)
 611                 {
 612                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 613                                    WM_MDIACTIVATE,
 614                                    (WPARAM)child->GetHWND(), 0);
 615                     return true;
 616                 }
 617             }
 618             node = node->GetNext();
 619         }
 620     }
 621     else if ( m_parentFrameActive )
 622     {
 623         return ProcessCommand(id);
 624     }
 625     else if ( m_currentChild )
 626     {
 627         return m_currentChild->HandleCommand(id, cmd, hwnd);
 628     }
 629     else
 630     {
 631         // this shouldn't happen because it means that our messages are being
 632         // lost (they're not sent to the parent frame nor to the children)
 633         wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
 634     }
 635
 636     return false;
 637 }
 638
 639 WXLRESULT wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 640                                         WXWPARAM wParam,
 641                                         WXLPARAM lParam)
 642 {
 643     WXHWND clientWnd;
 644     if ( GetClientWindow() )
 645         clientWnd = GetClientWindow()->GetHWND();
 646     else
 647         clientWnd = 0;
 648
 649     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 650 }
 651
 652 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 653 {
 654     MSG *pMsg = (MSG *)msg;
 655
 656     // first let the current child get it
 657     if ( m_currentChild && m_currentChild->GetHWND() &&
 658          m_currentChild->MSWTranslateMessage(msg) )
 659     {
 660         return true;
 661     }
 662
 663     // then try out accel table (will also check the menu accels)
 664     if ( wxFrame::MSWTranslateMessage(msg) )
 665     {
 666         return true;
 667     }
 668
 669     // finally, check for MDI specific built in accel keys
 670     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 671     {
 672         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 673             return true;
 674     }
 675
 676     return false;
 677 }
 678
 679 // ===========================================================================
 680 // wxMDIChildFrame
 681 // ===========================================================================
 682
 683 void wxMDIChildFrame::Init()
 684 {
 685     m_needsResize = true;
 686     m_needsInitialShow = true;
 687 }
 688
 689 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 690                              wxWindowID id,
 691                              const wxString& title,
 692                              const wxPoint& pos,
 693                              const wxSize& size,
 694                              long style,
 695                              const wxString& name)
 696 {
 697   SetName(name);
 698
 699   if ( id != wxID_ANY )
 700     m_windowId = id;
 701   else
 702     m_windowId = (int)NewControlId();
 703
 704   if ( parent )
 705   {
 706       parent->AddChild(this);
 707   }
 708
 709   int x = pos.x;
 710   int y = pos.y;
 711   int width = size.x;
 712   int height = size.y;
 713
 714   MDICREATESTRUCT mcs;
 715
 716   mcs.szClass = style & wxFULL_REPAINT_ON_RESIZE
 717                     ? wxMDIChildFrameClassName
 718                     : wxMDIChildFrameClassNameNoRedraw;
 719   mcs.szTitle = title;
 720   mcs.hOwner = wxGetInstance();
 721   if (x != wxDefaultCoord)
 722       mcs.x = x;
 723   else
 724       mcs.x = CW_USEDEFAULT;
 725
 726   if (y != wxDefaultCoord)
 727       mcs.y = y;
 728   else
 729       mcs.y = CW_USEDEFAULT;
 730
 731   if (width != wxDefaultCoord)
 732       mcs.cx = width;
 733   else
 734       mcs.cx = CW_USEDEFAULT;
 735
 736   if (height != wxDefaultCoord)
 737       mcs.cy = height;
 738   else
 739       mcs.cy = CW_USEDEFAULT;
 740
 741   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
 742   if (style & wxMINIMIZE_BOX)
 743     msflags |= WS_MINIMIZEBOX;
 744   if (style & wxMAXIMIZE_BOX)
 745     msflags |= WS_MAXIMIZEBOX;
 746   if (style & wxTHICK_FRAME)
 747     msflags |= WS_THICKFRAME;
 748   if (style & wxSYSTEM_MENU)
 749     msflags |= WS_SYSMENU;
 750   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 751     msflags |= WS_MINIMIZE;
 752   if (style & wxMAXIMIZE)
 753     msflags |= WS_MAXIMIZE;
 754   if (style & wxCAPTION)
 755     msflags |= WS_CAPTION;
 756
 757   mcs.style = msflags;
 758
 759   mcs.lParam = 0;
 760
 761   wxWindowCreationHook hook(this);
 762
 763   m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 764                                  WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 765
 766   wxAssociateWinWithHandle((HWND) GetHWND(), this);
 767
 768   return true;
 769 }
 770
 771 wxMDIChildFrame::~wxMDIChildFrame()
 772 {
 773     // will be destroyed by DestroyChildren() but reset them before calling it
 774     // to avoid using dangling pointers if a callback comes in the meanwhile
 775 #if wxUSE_TOOLBAR
 776     m_frameToolBar = NULL;
 777 #endif
 778 #if wxUSE_STATUSBAR
 779     m_frameStatusBar = NULL;
 780 #endif // wxUSE_STATUSBAR
 781
 782     DestroyChildren();
 783
 784     RemoveWindowMenu(NULL, m_hMenu);
 785
 786     MSWDestroyWindow();
 787 }
 788
 789 bool wxMDIChildFrame::Show(bool show)
 790 {
 791     m_needsInitialShow = false;
 792
 793     if (!wxFrame::Show(show))
 794         return false;
 795
 796     // KH: Without this call, new MDI children do not become active.
 797     // This was added here after the same BringWindowToTop call was
 798     // removed from wxTopLevelWindow::Show (November 2005)
 799     if ( show )
 800         ::BringWindowToTop(GetHwnd());
 801
 802     return true;
 803 }
 804
 805 // Set the client size (i.e. leave the calculation of borders etc.
 806 // to wxWidgets)
 807 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 808 {
 809   HWND hWnd = GetHwnd();
 810
 811   RECT rect;
 812   ::GetClientRect(hWnd, &rect);
 813
 814   RECT rect2;
 815   GetWindowRect(hWnd, &rect2);
 816
 817   // Find the difference between the entire window (title bar and all)
 818   // and the client area; add this to the new client size to move the
 819   // window
 820   int actual_width = rect2.right - rect2.left - rect.right + width;
 821   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 822
 823 #if wxUSE_STATUSBAR
 824   if (GetStatusBar() && GetStatusBar()->IsShown())
 825   {
 826     int sx, sy;
 827     GetStatusBar()->GetSize(&sx, &sy);
 828     actual_height += sy;
 829   }
 830 #endif // wxUSE_STATUSBAR
 831
 832   POINT point;
 833   point.x = rect2.left;
 834   point.y = rect2.top;
 835
 836   // If there's an MDI parent, must subtract the parent's top left corner
 837   // since MoveWindow moves relative to the parent
 838   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 839   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 840
 841   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)true);
 842
 843   wxSize size(width, height);
 844   wxSizeEvent event(size, m_windowId);
 845   event.SetEventObject( this );
 846   GetEventHandler()->ProcessEvent(event);
 847 }
 848
 849 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 850 {
 851   RECT rect;
 852   GetWindowRect(GetHwnd(), &rect);
 853   POINT point;
 854   point.x = rect.left;
 855   point.y = rect.top;
 856
 857   // Since we now have the absolute screen coords,
 858   // if there's a parent we must subtract its top left corner
 859   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 860   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 861
 862   if (x)
 863       *x = point.x;
 864   if (y)
 865       *y = point.y;
 866 }
 867
 868 void wxMDIChildFrame::InternalSetMenuBar()
 869 {
 870     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 871
 872     InsertWindowMenu(parent->GetClientWindow(),
 873                      m_hMenu, GetMDIWindowMenu(parent));
 874
 875     parent->m_parentFrameActive = false;
 876 }
 877
 878 void wxMDIChildFrame::DetachMenuBar()
 879 {
 880     RemoveWindowMenu(NULL, m_hMenu);
 881     wxFrame::DetachMenuBar();
 882 }
 883
 884 WXHICON wxMDIChildFrame::GetDefaultIcon() const
 885 {
 886     // we don't have any standard icons (any more)
 887     return (WXHICON)0;
 888 }
 889
 890 // ---------------------------------------------------------------------------
 891 // MDI operations
 892 // ---------------------------------------------------------------------------
 893
 894 void wxMDIChildFrame::Maximize(bool maximize)
 895 {
 896     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 897     if ( parent && parent->GetClientWindow() )
 898     {
 899         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 900                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
 901                       (WPARAM)GetHwnd(), 0);
 902     }
 903 }
 904
 905 void wxMDIChildFrame::Restore()
 906 {
 907     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 908     if ( parent && parent->GetClientWindow() )
 909     {
 910         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
 911                       (WPARAM) GetHwnd(), 0);
 912     }
 913 }
 914
 915 void wxMDIChildFrame::Activate()
 916 {
 917     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 918     if ( parent && parent->GetClientWindow() )
 919     {
 920         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
 921                       (WPARAM) GetHwnd(), 0);
 922     }
 923 }
 924
 925 // ---------------------------------------------------------------------------
 926 // MDI window proc and message handlers
 927 // ---------------------------------------------------------------------------
 928
 929 WXLRESULT wxMDIChildFrame::MSWWindowProc(WXUINT message,
 930                                     WXWPARAM wParam,
 931                                     WXLPARAM lParam)
 932 {
 933     WXLRESULT rc = 0;
 934     bool processed = false;
 935
 936     switch ( message )
 937     {
 938         case WM_COMMAND:
 939             {
 940                 WORD id, cmd;
 941                 WXHWND hwnd;
 942                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 943                               &id, &hwnd, &cmd);
 944
 945                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 946             }
 947             break;
 948
 949         case WM_GETMINMAXINFO:
 950             processed = HandleGetMinMaxInfo((MINMAXINFO *)lParam);
 951             break;
 952
 953         case WM_MDIACTIVATE:
 954             {
 955                 WXWORD act;
 956                 WXHWND hwndAct, hwndDeact;
 957                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
 958
 959                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
 960             }
 961             // fall through
 962
 963         case WM_MOVE:
 964             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
 965             // scrollbars if necessary
 966
 967             // fall through
 968
 969         case WM_SIZE:
 970             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
 971             // things happen
 972             MSWDefWindowProc(message, wParam, lParam);
 973             break;
 974
 975         case WM_SYSCOMMAND:
 976             // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
 977             // the message (the base class version does not)
 978             return MSWDefWindowProc(message, wParam, lParam);
 979
 980         case WM_WINDOWPOSCHANGING:
 981             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
 982             break;
 983     }
 984
 985     if ( !processed )
 986         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 987
 988     return rc;
 989 }
 990
 991 bool wxMDIChildFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 992 {
 993     // In case it's e.g. a toolbar.
 994     if ( hwnd )
 995     {
 996         wxWindow *win = wxFindWinFromHandle(hwnd);
 997         if (win)
 998             return win->MSWCommand(cmd, id);
 999     }
1000
1001     if (wxCurrentPopupMenu)
1002     {
1003         wxMenu *popupMenu = wxCurrentPopupMenu;
1004         wxCurrentPopupMenu = NULL;
1005         if (popupMenu->MSWCommand(cmd, id))
1006             return true;
1007     }
1008
1009     bool processed;
1010     if (GetMenuBar() && GetMenuBar()->FindItem(id))
1011     {
1012         processed = ProcessCommand(id);
1013     }
1014     else
1015     {
1016         processed = false;
1017     }
1018
1019     return processed;
1020 }
1021
1022 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
1023                                         WXHWND hwndAct,
1024                                         WXHWND hwndDeact)
1025 {
1026     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1027
1028     HMENU menuToSet = 0;
1029
1030     bool activated;
1031
1032     if ( m_hWnd == hwndAct )
1033     {
1034         activated = true;
1035         parent->m_currentChild = this;
1036
1037         HMENU child_menu = (HMENU)GetWinMenu();
1038         if ( child_menu )
1039         {
1040             parent->m_parentFrameActive = false;
1041
1042             menuToSet = child_menu;
1043         }
1044     }
1045     else if ( m_hWnd == hwndDeact )
1046     {
1047         wxASSERT_MSG( parent->m_currentChild == this,
1048                       wxT("can't deactivate MDI child which wasn't active!") );
1049
1050         activated = false;
1051         parent->m_currentChild = NULL;
1052
1053         HMENU parent_menu = (HMENU)parent->GetWinMenu();
1054
1055         // activate the the parent menu only when there is no other child
1056         // that has been activated
1057         if ( parent_menu && !hwndAct )
1058         {
1059             parent->m_parentFrameActive = true;
1060
1061             menuToSet = parent_menu;
1062         }
1063     }
1064     else
1065     {
1066         // we have nothing to do with it
1067         return false;
1068     }
1069
1070     if ( menuToSet )
1071     {
1072         MDISetMenu(parent->GetClientWindow(),
1073                    menuToSet, GetMDIWindowMenu(parent));
1074     }
1075
1076     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
1077     event.SetEventObject( this );
1078
1079     ResetWindowStyle((void *)NULL);
1080
1081     return GetEventHandler()->ProcessEvent(event);
1082 }
1083
1084 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
1085 {
1086     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1087 #if defined(__WIN95__)
1088     if (!(lpPos->flags & SWP_NOSIZE))
1089     {
1090         RECT rectClient;
1091         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1092         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1093         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1094         {
1095             ::AdjustWindowRectEx(&rectClient, dwStyle, false, dwExStyle);
1096             lpPos->x = rectClient.left;
1097             lpPos->y = rectClient.top;
1098             lpPos->cx = rectClient.right - rectClient.left;
1099             lpPos->cy = rectClient.bottom - rectClient.top;
1100         }
1101 #if wxUSE_TOOLBAR
1102         wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1103         if (pFrameWnd && pFrameWnd->GetToolBar() && pFrameWnd->GetToolBar()->IsShown())
1104         {
1105             pFrameWnd->GetToolBar()->Refresh();
1106         }
1107 #endif
1108     }
1109 #endif // Win95
1110
1111     return false;
1112 }
1113
1114 bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo)
1115 {
1116     MINMAXINFO *info = (MINMAXINFO *)mmInfo;
1117
1118     // let the default window proc calculate the size of MDI children
1119     // frames because it is based on the size of the MDI client window,
1120     // not on the values specified in wxWindow m_max variables
1121     bool processed = MSWDefWindowProc(WM_GETMINMAXINFO, 0, (LPARAM)mmInfo) != 0;
1122
1123     int minWidth = GetMinWidth(),
1124         minHeight = GetMinHeight();
1125
1126     // but allow GetSizeHints() to set the min size
1127     if ( minWidth != -1 )
1128     {
1129         info->ptMinTrackSize.x = minWidth;
1130
1131         processed = true;
1132     }
1133
1134     if ( minHeight != -1 )
1135     {
1136         info->ptMinTrackSize.y = minHeight;
1137
1138         processed = true;
1139     }
1140
1141     return processed;
1142 }
1143
1144 // ---------------------------------------------------------------------------
1145 // MDI specific message translation/preprocessing
1146 // ---------------------------------------------------------------------------
1147
1148 WXLRESULT wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
1149 {
1150     return DefMDIChildProc(GetHwnd(),
1151                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1152 }
1153
1154 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1155 {
1156     return wxFrame::MSWTranslateMessage(msg);
1157 }
1158
1159 // ---------------------------------------------------------------------------
1160 // misc
1161 // ---------------------------------------------------------------------------
1162
1163 void wxMDIChildFrame::MSWDestroyWindow()
1164 {
1165     invalidHandle = GetHwnd();
1166
1167     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1168
1169     // Must make sure this handle is invalidated (set to NULL) since all sorts
1170     // of things could happen after the child client is destroyed, but before
1171     // the wxFrame is destroyed.
1172
1173     HWND oldHandle = (HWND)GetHWND();
1174     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1175                 (WPARAM)oldHandle, 0);
1176
1177     if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
1178         ResetWindowStyle((void*) NULL);
1179
1180     invalidHandle = 0;
1181
1182     if (m_hMenu)
1183     {
1184         ::DestroyMenu((HMENU) m_hMenu);
1185         m_hMenu = 0;
1186     }
1187     wxRemoveHandleAssociation(this);
1188     m_hWnd = 0;
1189 }
1190
1191 // Change the client window's extended style so we don't get a client edge
1192 // style when a child is maximised (a double border looks silly.)
1193 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1194 {
1195 #if defined(__WIN95__)
1196     RECT *rect = (RECT *)vrect;
1197     wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1198     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1199     if (!pChild || (pChild == this))
1200     {
1201         HWND hwndClient = GetWinHwnd(pFrameWnd->GetClientWindow());
1202         DWORD dwStyle = ::GetWindowLong(hwndClient, GWL_EXSTYLE);
1203
1204         // we want to test whether there is a maximized child, so just set
1205         // dwThisStyle to 0 if there is no child at all
1206         DWORD dwThisStyle = pChild
1207             ? ::GetWindowLong(GetWinHwnd(pChild), GWL_STYLE) : 0;
1208         DWORD dwNewStyle = dwStyle;
1209         if ( dwThisStyle & WS_MAXIMIZE )
1210             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1211         else
1212             dwNewStyle |= WS_EX_CLIENTEDGE;
1213
1214         if (dwStyle != dwNewStyle)
1215         {
1216             // force update of everything
1217             ::RedrawWindow(hwndClient, NULL, NULL,
1218                            RDW_INVALIDATE | RDW_ALLCHILDREN);
1219             ::SetWindowLong(hwndClient, GWL_EXSTYLE, dwNewStyle);
1220             ::SetWindowPos(hwndClient, NULL, 0, 0, 0, 0,
1221                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1222                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1223                            SWP_NOCOPYBITS);
1224             if (rect)
1225                 ::GetClientRect(hwndClient, rect);
1226
1227             return true;
1228         }
1229     }
1230 #endif // Win95
1231
1232     return false;
1233 }
1234
1235 // ===========================================================================
1236 // wxMDIClientWindow: the window of predefined (by Windows) class which
1237 // contains the child frames
1238 // ===========================================================================
1239
1240 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1241 {
1242     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
1243
1244     CLIENTCREATESTRUCT ccs;
1245     m_windowStyle = style;
1246     m_parent = parent;
1247
1248     ccs.hWindowMenu = GetMDIWindowMenu(parent);
1249     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1250
1251     DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD |
1252                     WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
1253
1254     if ( style & wxHSCROLL )
1255         msStyle |= WS_HSCROLL;
1256     if ( style & wxVSCROLL )
1257         msStyle |= WS_VSCROLL;
1258
1259 #if defined(__WIN95__)
1260     DWORD exStyle = WS_EX_CLIENTEDGE;
1261 #else
1262     DWORD exStyle = 0;
1263 #endif
1264
1265     wxWindowCreationHook hook(this);
1266     m_hWnd = (WXHWND)::CreateWindowEx
1267                        (
1268                         exStyle,
1269                         wxT("MDICLIENT"),
1270                         NULL,
1271                         msStyle,
1272                         0, 0, 0, 0,
1273                         GetWinHwnd(parent),
1274                         NULL,
1275                         wxGetInstance(),
1276                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1277     if ( !m_hWnd )
1278     {
1279         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1280
1281         return false;
1282     }
1283
1284     SubclassWin(m_hWnd);
1285
1286     return true;
1287 }
1288
1289 // Explicitly call default scroll behaviour
1290 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1291 {
1292     // Note: for client windows, the scroll position is not set in
1293     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1294     // scroll position we're at.
1295     // This makes it hard to paint patterns or bitmaps in the background,
1296     // and have the client area scrollable as well.
1297
1298     if ( event.GetOrientation() == wxHORIZONTAL )
1299         m_scrollX = event.GetPosition(); // Always returns zero!
1300     else
1301         m_scrollY = event.GetPosition(); // Always returns zero!
1302
1303     event.Skip();
1304 }
1305
1306 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1307 {
1308     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1309     // client area, you can end up with a non-refreshed portion in the client window
1310     // (see OGL studio sample). So check if the position is changed and if so,
1311     // redraw the MDI child frames.
1312
1313     const wxPoint oldPos = GetPosition();
1314
1315     wxWindow::DoSetSize(x, y, width, height, sizeFlags | wxSIZE_FORCE);
1316
1317     const wxPoint newPos = GetPosition();
1318
1319     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1320     {
1321         if (GetParent())
1322         {
1323             wxWindowList::compatibility_iterator node = GetParent()->GetChildren().GetFirst();
1324             while (node)
1325             {
1326                 wxWindow *child = node->GetData();
1327                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1328                 {
1329                    ::RedrawWindow(GetHwndOf(child),
1330                                   NULL,
1331                                   NULL,
1332                                   RDW_FRAME |
1333                                   RDW_ALLCHILDREN |
1334                                   RDW_INVALIDATE);
1335                 }
1336                 node = node->GetNext();
1337             }
1338         }
1339     }
1340 }
1341
1342 void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
1343 {
1344     // wxMSW prior to 2.5.3 created MDI child frames as visible, which resulted
1345     // in flicker e.g. when the frame contained controls with non-trivial
1346     // layout. Since 2.5.3, the frame is created hidden as all other top level
1347     // windows. In order to maintain backward compatibility, the frame is shown
1348     // in OnIdle, unless Show(false) was called by the programmer before.
1349     if ( m_needsInitialShow )
1350     {
1351         Show(true);
1352     }
1353
1354     // MDI child frames get their WM_SIZE when they're constructed but at this
1355     // moment they don't have any children yet so all child windows will be
1356     // positioned incorrectly when they are added later - to fix this, we
1357     // generate an artificial size event here
1358     if ( m_needsResize )
1359     {
1360         m_needsResize = false; // avoid any possibility of recursion
1361
1362         SendSizeEvent();
1363     }
1364
1365     event.Skip();
1366 }
1367
1368 // ---------------------------------------------------------------------------
1369 // non member functions
1370 // ---------------------------------------------------------------------------
1371
1372 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1373 {
1374     ::SendMessage(GetWinHwnd(win), WM_MDISETMENU,
1375 #ifdef __WIN32__
1376                   (WPARAM)hmenuFrame, (LPARAM)hmenuWindow
1377 #else
1378                   0, MAKELPARAM(hmenuFrame, hmenuWindow)
1379 #endif
1380                  );
1381
1382     // update menu bar of the parent window
1383     wxWindow *parent = win->GetParent();
1384     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1385
1386     ::SendMessage(GetWinHwnd(win), WM_MDIREFRESHMENU, 0, 0L);
1387
1388     ::DrawMenuBar(GetWinHwnd(parent));
1389 }
1390
1391 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
1392 {
1393     // Try to insert Window menu in front of Help, otherwise append it.
1394     HMENU hmenu = (HMENU)menu;
1395
1396     if (subMenu)
1397     {
1398         int N = GetMenuItemCount(hmenu);
1399         bool success = false;
1400         for ( int i = 0; i < N; i++ )
1401         {
1402             wxChar buf[256];
1403             int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1404             if ( chars == 0 )
1405             {
1406                 wxLogLastError(wxT("GetMenuString"));
1407
1408                 continue;
1409             }
1410
1411             wxString strBuf(buf);
1412             if ( wxStripMenuCodes(strBuf) == wxGetStockLabel(wxID_HELP,false) )
1413             {
1414                 success = true;
1415                 ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1416                              (UINT)subMenu, _("&Window"));
1417                 break;
1418             }
1419         }
1420
1421         if ( !success )
1422         {
1423             ::AppendMenu(hmenu, MF_POPUP, (UINT)subMenu, _("&Window"));
1424         }
1425     }
1426
1427     MDISetMenu(win, hmenu, subMenu);
1428 }
1429
1430 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu)
1431 {
1432     HMENU hMenu = (HMENU)menu;
1433
1434     if ( hMenu )
1435     {
1436         wxChar buf[1024];
1437
1438         int N = ::GetMenuItemCount(hMenu);
1439         for ( int i = 0; i < N; i++ )
1440         {
1441             if ( !::GetMenuString(hMenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) )
1442             {
1443                 // Ignore successful read of menu string with length 0 which
1444                 // occurs, for example, for a maximized MDI childs system menu
1445                 if ( ::GetLastError() != 0 )
1446                 {
1447                     wxLogLastError(wxT("GetMenuString"));
1448                 }
1449
1450                 continue;
1451             }
1452
1453             if ( wxStrcmp(buf, _("&Window")) == 0 )
1454             {
1455                 if ( !::RemoveMenu(hMenu, i, MF_BYPOSITION) )
1456                 {
1457                     wxLogLastError(wxT("RemoveMenu"));
1458                 }
1459
1460                 break;
1461             }
1462         }
1463     }
1464
1465     if ( win )
1466     {
1467         // we don't change the windows menu, but we update the main one
1468         MDISetMenu(win, hMenu, NULL);
1469     }
1470 }
1471
1472 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1473                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1474 {
1475     *activate = true;
1476     *hwndAct = (WXHWND)lParam;
1477     *hwndDeact = (WXHWND)wParam;
1478 }
1479
1480 #endif // wxUSE_MDI && !defined(__WXUNIVERSAL__)
1481