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