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