src/msw/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/mdi.cpp
   3 // Purpose:     MDI classes for wxMSW
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_MDI && !defined(__WXUNIVERSAL__)
  28
  29 #include "wx/mdi.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/menu.h"
  34     #include "wx/app.h"
  35     #include "wx/utils.h"
  36     #include "wx/dialog.h"
  37     #include "wx/statusbr.h"
  38     #include "wx/settings.h"
  39     #include "wx/intl.h"
  40     #include "wx/log.h"
  41     #include "wx/toolbar.h"
  42 #endif
  43
  44 #include "wx/stockitem.h"
  45 #include "wx/msw/private.h"
  46
  47 #include <string.h>
  48
  49 // ---------------------------------------------------------------------------
  50 // global variables
  51 // ---------------------------------------------------------------------------
  52
  53 extern wxMenu *wxCurrentPopupMenu;
  54
  55 extern const wxChar *wxMDIFrameClassName;   // from app.cpp
  56 extern const wxChar *wxMDIChildFrameClassName;
  57 extern const wxChar *wxMDIChildFrameClassNameNoRedraw;
  58 extern void wxRemoveHandleAssociation(wxWindow *win);
  59
  60 // ---------------------------------------------------------------------------
  61 // constants
  62 // ---------------------------------------------------------------------------
  63
  64 static const int IDM_WINDOWTILEHOR  = 4001;
  65 static const int IDM_WINDOWCASCADE = 4002;
  66 static const int IDM_WINDOWICONS = 4003;
  67 static const int IDM_WINDOWNEXT = 4004;
  68 static const int IDM_WINDOWTILEVERT = 4005;
  69 static const int IDM_WINDOWPREV = 4006;
  70
  71 // This range gives a maximum of 500 MDI children. Should be enough :-)
  72 static const int wxFIRST_MDI_CHILD = 4100;
  73 static const int wxLAST_MDI_CHILD = 4600;
  74
  75 // ---------------------------------------------------------------------------
  76 // private functions
  77 // ---------------------------------------------------------------------------
  78
  79 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
  80 // of the parent of win (which is supposed to be the MDI client window)
  81 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
  82
  83 // insert the window menu (subMenu) into menu just before "Help" submenu or at
  84 // the very end if not found
  85 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
  86
  87 // Remove the window menu
  88 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu);
  89
  90 // is this an id of an MDI child?
  91 inline bool IsMdiCommandId(int id)
  92 {
  93     return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
  94 }
  95
  96 // unpack the parameters of WM_MDIACTIVATE message
  97 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
  98                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
  99
 100 // return the HMENU of the MDI menu
 101 static inline HMENU GetMDIWindowMenu(wxMDIParentFrame *frame)
 102 {
 103     wxMenu *menu = frame->GetWindowMenu();
 104     return menu ? GetHmenuOf(menu) : 0;
 105 }
 106
 107 // ===========================================================================
 108 // implementation
 109 // ===========================================================================
 110
 111 // ---------------------------------------------------------------------------
 112 // wxWin macros
 113 // ---------------------------------------------------------------------------
 114
 115 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 116 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 117 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 118
 119 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 120     EVT_SIZE(wxMDIParentFrame::OnSize)
 121     EVT_ICONIZE(wxMDIParentFrame::OnIconized)
 122     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 123 END_EVENT_TABLE()
 124
 125 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 126     EVT_IDLE(wxMDIChildFrame::OnIdle)
 127 END_EVENT_TABLE()
 128
 129 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 130     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 131 END_EVENT_TABLE()
 132
 133 // ===========================================================================
 134 // wxMDIParentFrame: the frame which contains the client window which manages
 135 // the children
 136 // ===========================================================================
 137
 138 wxMDIParentFrame::wxMDIParentFrame()
 139 {
 140     m_clientWindow = NULL;
 141     m_currentChild = NULL;
 142     m_windowMenu = (wxMenu*) NULL;
 143     m_parentFrameActive = true;
 144 }
 145
 146 bool wxMDIParentFrame::Create(wxWindow *parent,
 147                               wxWindowID id,
 148                               const wxString& title,
 149                               const wxPoint& pos,
 150                               const wxSize& size,
 151                               long style,
 152                               const wxString& name)
 153 {
 154   m_clientWindow = NULL;
 155   m_currentChild = NULL;
 156
 157   // this style can be used to prevent a window from having the standard MDI
 158   // "Window" menu
 159   if ( style & wxFRAME_NO_WINDOW_MENU )
 160   {
 161       m_windowMenu = (wxMenu *)NULL;
 162   }
 163   else // normal case: we have the window menu, so construct it
 164   {
 165       m_windowMenu = new wxMenu;
 166
 167       m_windowMenu->Append(IDM_WINDOWCASCADE, _("&Cascade"));
 168       m_windowMenu->Append(IDM_WINDOWTILEHOR, _("Tile &Horizontally"));
 169       m_windowMenu->Append(IDM_WINDOWTILEVERT, _("Tile &Vertically"));
 170       m_windowMenu->AppendSeparator();
 171       m_windowMenu->Append(IDM_WINDOWICONS, _("&Arrange Icons"));
 172       m_windowMenu->Append(IDM_WINDOWNEXT, _("&Next"));
 173       m_windowMenu->Append(IDM_WINDOWPREV, _("&Previous"));
 174   }
 175
 176   m_parentFrameActive = true;
 177
 178   if (!parent)
 179     wxTopLevelWindows.Append(this);
 180
 181   SetName(name);
 182   m_windowStyle = style;
 183
 184   if ( parent )
 185       parent->AddChild(this);
 186
 187   if ( id != wxID_ANY )
 188     m_windowId = id;
 189   else
 190     m_windowId = NewControlId();
 191
 192   WXDWORD exflags;
 193   WXDWORD msflags = MSWGetCreateWindowFlags(&exflags);
 194   msflags &= ~WS_VSCROLL;
 195   msflags &= ~WS_HSCROLL;
 196
 197   if ( !wxWindow::MSWCreate(wxMDIFrameClassName,
 198                             title.wx_str(),
 199                             pos, size,
 200                             msflags,
 201                             exflags) )
 202   {
 203       return false;
 204   }
 205
 206   SetOwnBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 207
 208   // unlike (almost?) all other windows, frames are created hidden
 209   m_isShown = false;
 210
 211   return true;
 212 }
 213
 214 wxMDIParentFrame::~wxMDIParentFrame()
 215 {
 216     // see comment in ~wxMDIChildFrame
 217 #if wxUSE_TOOLBAR
 218     m_frameToolBar = NULL;
 219 #endif
 220 #if wxUSE_STATUSBAR
 221     m_frameStatusBar = NULL;
 222 #endif // wxUSE_STATUSBAR
 223
 224     DestroyChildren();
 225
 226     if (m_windowMenu)
 227     {
 228         delete m_windowMenu;
 229         m_windowMenu = (wxMenu*) NULL;
 230     }
 231
 232     // the MDI frame menubar is not automatically deleted by Windows unlike for
 233     // the normal frames
 234     if ( m_hMenu )
 235     {
 236         ::DestroyMenu((HMENU)m_hMenu);
 237         m_hMenu = (WXHMENU)NULL;
 238     }
 239
 240     if ( m_clientWindow )
 241     {
 242         if ( m_clientWindow->MSWGetOldWndProc() )
 243             m_clientWindow->UnsubclassWin();
 244
 245         m_clientWindow->SetHWND(0);
 246         delete m_clientWindow;
 247     }
 248 }
 249
 250 #if wxUSE_MENUS_NATIVE
 251
 252 void wxMDIParentFrame::InternalSetMenuBar()
 253 {
 254     m_parentFrameActive = true;
 255
 256     InsertWindowMenu(GetClientWindow(), m_hMenu, GetMDIWindowMenu(this));
 257 }
 258
 259 #endif // wxUSE_MENUS_NATIVE
 260
 261 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 262 {
 263     if (m_windowMenu)
 264     {
 265         if (GetMenuBar())
 266         {
 267             // Remove old window menu
 268             RemoveWindowMenu(GetClientWindow(), m_hMenu);
 269         }
 270
 271         delete m_windowMenu;
 272         m_windowMenu = (wxMenu*) NULL;
 273     }
 274
 275     if (menu)
 276     {
 277         m_windowMenu = menu;
 278         if (GetMenuBar())
 279         {
 280             InsertWindowMenu(GetClientWindow(), m_hMenu,
 281                              GetHmenuOf(m_windowMenu));
 282         }
 283     }
 284 }
 285
 286 void wxMDIParentFrame::DoMenuUpdates(wxMenu* menu)
 287 {
 288     wxMDIChildFrame *child = GetActiveChild();
 289     if ( child )
 290     {
 291         wxEvtHandler* source = child->GetEventHandler();
 292         wxMenuBar* bar = child->GetMenuBar();
 293
 294         if (menu)
 295         {
 296             menu->UpdateUI(source);
 297         }
 298         else
 299         {
 300             if ( bar != NULL )
 301             {
 302                 int nCount = bar->GetMenuCount();
 303                 for (int n = 0; n < nCount; n++)
 304                     bar->GetMenu(n)->UpdateUI(source);
 305             }
 306         }
 307     }
 308     else
 309     {
 310         wxFrameBase::DoMenuUpdates(menu);
 311     }
 312 }
 313
 314 const wxMenuItem *wxMDIParentFrame::FindItemInMenuBar(int menuId) const
 315 {
 316     const wxMenuItem *item = wxFrame::FindItemInMenuBar(menuId);
 317     if ( !item && m_currentChild )
 318     {
 319         item = m_currentChild->FindItemInMenuBar(menuId);
 320     }
 321
 322     return item;
 323 }
 324
 325 void wxMDIParentFrame::UpdateClientSize()
 326 {
 327     if ( GetClientWindow() )
 328     {
 329         int width, height;
 330         GetClientSize(&width, &height);
 331
 332         GetClientWindow()->SetSize(0, 0, width, height);
 333     }
 334 }
 335
 336 void wxMDIParentFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 337 {
 338     UpdateClientSize();
 339
 340     // do not call event.Skip() here, it somehow messes up MDI client window
 341 }
 342
 343 void wxMDIParentFrame::OnIconized(wxIconizeEvent& event)
 344 {
 345     event.Skip();
 346
 347     if ( !event.IsIconized() )
 348         UpdateClientSize();
 349 }
 350
 351 // Returns the active MDI child window
 352 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 353 {
 354     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 355                                     WM_MDIGETACTIVE, 0, 0L);
 356     if ( hWnd == 0 )
 357         return NULL;
 358     else
 359         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 360 }
 361
 362 // Create the client window class (don't Create the window, just return a new
 363 // class)
 364 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 365 {
 366     return new wxMDIClientWindow;
 367 }
 368
 369 // Responds to colour changes, and passes event on to children.
 370 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 371 {
 372     if ( m_clientWindow )
 373     {
 374         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 375         m_clientWindow->Refresh();
 376     }
 377
 378     event.Skip();
 379 }
 380
 381 WXHICON wxMDIParentFrame::GetDefaultIcon() const
 382 {
 383     // we don't have any standard icons (any more)
 384     return (WXHICON)0;
 385 }
 386
 387 // ---------------------------------------------------------------------------
 388 // MDI operations
 389 // ---------------------------------------------------------------------------
 390
 391 void wxMDIParentFrame::Cascade()
 392 {
 393     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 394 }
 395
 396 void wxMDIParentFrame::Tile(wxOrientation orient)
 397 {
 398     wxASSERT_MSG( orient == wxHORIZONTAL || orient == wxVERTICAL,
 399                   _T("invalid orientation value") );
 400
 401     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE,
 402                   orient == wxHORIZONTAL ? MDITILE_HORIZONTAL
 403                                          : MDITILE_VERTICAL, 0);
 404 }
 405
 406 void wxMDIParentFrame::ArrangeIcons()
 407 {
 408     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 409 }
 410
 411 void wxMDIParentFrame::ActivateNext()
 412 {
 413     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 414 }
 415
 416 void wxMDIParentFrame::ActivatePrevious()
 417 {
 418     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 419 }
 420
 421 // ---------------------------------------------------------------------------
 422 // the MDI parent frame window proc
 423 // ---------------------------------------------------------------------------
 424
 425 WXLRESULT wxMDIParentFrame::MSWWindowProc(WXUINT message,
 426                                      WXWPARAM wParam,
 427                                      WXLPARAM lParam)
 428 {
 429     WXLRESULT rc = 0;
 430     bool processed = false;
 431
 432     switch ( message )
 433     {
 434         case WM_ACTIVATE:
 435             {
 436                 WXWORD state, minimized;
 437                 WXHWND hwnd;
 438                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 439
 440                 processed = HandleActivate(state, minimized != 0, hwnd);
 441             }
 442             break;
 443
 444         case WM_COMMAND:
 445             {
 446                 WXWORD id, cmd;
 447                 WXHWND hwnd;
 448                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 449
 450                 (void)HandleCommand(id, cmd, hwnd);
 451
 452                 // even if the frame didn't process it, there is no need to try it
 453                 // once again (i.e. call wxFrame::HandleCommand()) - we just did it,
 454                 // so pretend we processed the message anyhow
 455                 processed = true;
 456             }
 457
 458             // always pass this message DefFrameProc(), otherwise MDI menu
 459             // commands (and sys commands - more surprisingly!) won't work
 460             MSWDefWindowProc(message, wParam, lParam);
 461             break;
 462
 463         case WM_CREATE:
 464             m_clientWindow = OnCreateClient();
 465             // Uses own style for client style
 466             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 467             {
 468                 wxLogMessage(_("Failed to create MDI parent frame."));
 469
 470                 rc = -1;
 471             }
 472
 473             processed = true;
 474             break;
 475
 476         case WM_ERASEBKGND:
 477             processed = true;
 478
 479             // we erase background ourselves
 480             rc = true;
 481             break;
 482
 483         case WM_SIZE:
 484             // though we don't (usually) resize the MDI client to exactly fit the
 485             // client area we need to pass this one to DefFrameProc to allow the children to show
 486             break;
 487     }
 488
 489     if ( !processed )
 490         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 491
 492     return rc;
 493 }
 494
 495 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 496 {
 497     bool processed = false;
 498
 499     if ( wxWindow::HandleActivate(state, minimized, activate) )
 500     {
 501         // already processed
 502         processed = true;
 503     }
 504
 505     // If this window is an MDI parent, we must also send an OnActivate message
 506     // to the current child.
 507     if ( (m_currentChild != NULL) &&
 508          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 509     {
 510         wxActivateEvent event(wxEVT_ACTIVATE, true, m_currentChild->GetId());
 511         event.SetEventObject( m_currentChild );
 512         if ( m_currentChild->HandleWindowEvent(event) )
 513             processed = true;
 514     }
 515
 516     return processed;
 517 }
 518
 519 bool wxMDIParentFrame::HandleCommand(WXWORD id_, WXWORD cmd, WXHWND hwnd)
 520 {
 521     // sign extend to int from short before comparing with the other int ids
 522     int id = (signed short)id_;
 523
 524     // In case it's e.g. a toolbar.
 525     if ( hwnd )
 526     {
 527         wxWindow *win = wxFindWinFromHandle(hwnd);
 528         if ( win )
 529             return win->MSWCommand(cmd, id);
 530     }
 531
 532     if (wxCurrentPopupMenu)
 533     {
 534         wxMenu *popupMenu = wxCurrentPopupMenu;
 535         wxCurrentPopupMenu = NULL;
 536         if (popupMenu->MSWCommand(cmd, id))
 537             return true;
 538     }
 539
 540     // is it one of standard MDI commands?
 541     WXWPARAM wParam = 0;
 542     WXLPARAM lParam = 0;
 543     int msg;
 544     switch ( id )
 545     {
 546         case IDM_WINDOWCASCADE:
 547             msg = WM_MDICASCADE;
 548             wParam = MDITILE_SKIPDISABLED;
 549             break;
 550
 551         case IDM_WINDOWTILEHOR:
 552             wParam |= MDITILE_HORIZONTAL;
 553             // fall through
 554
 555         case IDM_WINDOWTILEVERT:
 556             if ( !wParam )
 557                 wParam = MDITILE_VERTICAL;
 558             msg = WM_MDITILE;
 559             wParam |= MDITILE_SKIPDISABLED;
 560             break;
 561
 562         case IDM_WINDOWICONS:
 563             msg = WM_MDIICONARRANGE;
 564             break;
 565
 566         case IDM_WINDOWNEXT:
 567             msg = WM_MDINEXT;
 568             lParam = 0;         // next child
 569             break;
 570
 571         case IDM_WINDOWPREV:
 572             msg = WM_MDINEXT;
 573             lParam = 1;         // previous child
 574             break;
 575
 576         default:
 577             msg = 0;
 578     }
 579
 580     if ( msg )
 581     {
 582         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, lParam);
 583
 584         return true;
 585     }
 586
 587     // FIXME VZ: what does this test do??
 588     if (id >= 0xF000)
 589     {
 590         return false; // Get WndProc to call default proc
 591     }
 592
 593     if ( IsMdiCommandId(id) )
 594     {
 595         wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 596         while ( node )
 597         {
 598             wxWindow *child = node->GetData();
 599             if ( child->GetHWND() )
 600             {
 601                 int childId = wxGetWindowId(child->GetHWND());
 602                 if ( childId == (signed short)id )
 603                 {
 604                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 605                                    WM_MDIACTIVATE,
 606                                    (WPARAM)child->GetHWND(), 0);
 607                     return true;
 608                 }
 609             }
 610             node = node->GetNext();
 611         }
 612     }
 613     else if ( m_parentFrameActive )
 614     {
 615         return ProcessCommand(id);
 616     }
 617     else if ( m_currentChild )
 618     {
 619         return m_currentChild->HandleCommand(id, cmd, hwnd);
 620     }
 621     else
 622     {
 623         // this shouldn't happen because it means that our messages are being
 624         // lost (they're not sent to the parent frame nor to the children)
 625         wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
 626     }
 627
 628     return false;
 629 }
 630
 631 WXLRESULT wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 632                                         WXWPARAM wParam,
 633                                         WXLPARAM lParam)
 634 {
 635     WXHWND clientWnd;
 636     if ( GetClientWindow() )
 637         clientWnd = GetClientWindow()->GetHWND();
 638     else
 639         clientWnd = 0;
 640
 641     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 642 }
 643
 644 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 645 {
 646     MSG *pMsg = (MSG *)msg;
 647
 648     // first let the current child get it
 649     if ( m_currentChild && m_currentChild->GetHWND() &&
 650          m_currentChild->MSWTranslateMessage(msg) )
 651     {
 652         return true;
 653     }
 654
 655     // then try out accel table (will also check the menu accels)
 656     if ( wxFrame::MSWTranslateMessage(msg) )
 657     {
 658         return true;
 659     }
 660
 661     // finally, check for MDI specific built in accel keys
 662     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 663     {
 664         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 665             return true;
 666     }
 667
 668     return false;
 669 }
 670
 671 // ===========================================================================
 672 // wxMDIChildFrame
 673 // ===========================================================================
 674
 675 void wxMDIChildFrame::Init()
 676 {
 677     m_needsResize = true;
 678     m_needsInitialShow = true;
 679 }
 680
 681 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 682                              wxWindowID id,
 683                              const wxString& title,
 684                              const wxPoint& pos,
 685                              const wxSize& size,
 686                              long style,
 687                              const wxString& name)
 688 {
 689   SetName(name);
 690
 691   if ( id != wxID_ANY )
 692     m_windowId = id;
 693   else
 694     m_windowId = NewControlId();
 695
 696   if ( parent )
 697   {
 698       parent->AddChild(this);
 699   }
 700
 701   int x = pos.x;
 702   int y = pos.y;
 703   int width = size.x;
 704   int height = size.y;
 705
 706   MDICREATESTRUCT mcs;
 707
 708   mcs.szClass = style & wxFULL_REPAINT_ON_RESIZE
 709                     ? wxMDIChildFrameClassName
 710                     : wxMDIChildFrameClassNameNoRedraw;
 711   mcs.szTitle = title.wx_str();
 712   mcs.hOwner = wxGetInstance();
 713   if (x != wxDefaultCoord)
 714       mcs.x = x;
 715   else
 716       mcs.x = CW_USEDEFAULT;
 717
 718   if (y != wxDefaultCoord)
 719       mcs.y = y;
 720   else
 721       mcs.y = CW_USEDEFAULT;
 722
 723   if (width != wxDefaultCoord)
 724       mcs.cx = width;
 725   else
 726       mcs.cx = CW_USEDEFAULT;
 727
 728   if (height != wxDefaultCoord)
 729       mcs.cy = height;
 730   else
 731       mcs.cy = CW_USEDEFAULT;
 732
 733   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
 734   if (style & wxMINIMIZE_BOX)
 735     msflags |= WS_MINIMIZEBOX;
 736   if (style & wxMAXIMIZE_BOX)
 737     msflags |= WS_MAXIMIZEBOX;
 738   if (style & wxRESIZE_BORDER)
 739     msflags |= WS_THICKFRAME;
 740   if (style & wxSYSTEM_MENU)
 741     msflags |= WS_SYSMENU;
 742   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 743     msflags |= WS_MINIMIZE;
 744   if (style & wxMAXIMIZE)
 745     msflags |= WS_MAXIMIZE;
 746   if (style & wxCAPTION)
 747     msflags |= WS_CAPTION;
 748
 749   mcs.style = msflags;
 750
 751   mcs.lParam = 0;
 752
 753   wxWindowCreationHook hook(this);
 754
 755   m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 756                                  WM_MDICREATE, 0, (LPARAM)&mcs);
 757
 758   if ( !m_hWnd )
 759   {
 760       wxLogLastError(_T("WM_MDICREATE"));
 761       return false;
 762   }
 763
 764   SubclassWin(m_hWnd);
 765
 766   return true;
 767 }
 768
 769 wxMDIChildFrame::~wxMDIChildFrame()
 770 {
 771     // if we hadn't been created, there is nothing to destroy
 772     if ( !m_hWnd )
 773         return;
 774
 775     // will be destroyed by DestroyChildren() but reset them before calling it
 776     // to avoid using dangling pointers if a callback comes in the meanwhile
 777 #if wxUSE_TOOLBAR
 778     m_frameToolBar = NULL;
 779 #endif
 780 #if wxUSE_STATUSBAR
 781     m_frameStatusBar = NULL;
 782 #endif // wxUSE_STATUSBAR
 783
 784     DestroyChildren();
 785
 786     RemoveWindowMenu(NULL, m_hMenu);
 787
 788     MSWDestroyWindow();
 789 }
 790
 791 bool wxMDIChildFrame::Show(bool show)
 792 {
 793     m_needsInitialShow = false;
 794
 795     if (!wxFrame::Show(show))
 796         return false;
 797
 798     // KH: Without this call, new MDI children do not become active.
 799     // This was added here after the same BringWindowToTop call was
 800     // removed from wxTopLevelWindow::Show (November 2005)
 801     if ( show )
 802         ::BringWindowToTop(GetHwnd());
 803
 804     // we need to refresh the MDI frame window menu to include (or exclude if
 805     // we've been hidden) this frame
 806     wxMDIParentFrame *parent = GetMDIParent();
 807     MDISetMenu(parent->GetClientWindow(), NULL, NULL);
 808
 809     return true;
 810 }
 811
 812 // Set the client size (i.e. leave the calculation of borders etc.
 813 // to wxWidgets)
 814 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 815 {
 816   HWND hWnd = GetHwnd();
 817
 818   RECT rect;
 819   ::GetClientRect(hWnd, &rect);
 820
 821   RECT rect2;
 822   GetWindowRect(hWnd, &rect2);
 823
 824   // Find the difference between the entire window (title bar and all)
 825   // and the client area; add this to the new client size to move the
 826   // window
 827   int actual_width = rect2.right - rect2.left - rect.right + width;
 828   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 829
 830 #if wxUSE_STATUSBAR
 831   if (GetStatusBar() && GetStatusBar()->IsShown())
 832   {
 833     int sx, sy;
 834     GetStatusBar()->GetSize(&sx, &sy);
 835     actual_height += sy;
 836   }
 837 #endif // wxUSE_STATUSBAR
 838
 839   POINT point;
 840   point.x = rect2.left;
 841   point.y = rect2.top;
 842
 843   // If there's an MDI parent, must subtract the parent's top left corner
 844   // since MoveWindow moves relative to the parent
 845   wxMDIParentFrame *mdiParent = GetMDIParent();
 846   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 847
 848   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)true);
 849
 850   wxSize size(width, height);
 851   wxSizeEvent event(size, m_windowId);
 852   event.SetEventObject( this );
 853   HandleWindowEvent(event);
 854 }
 855
 856 // Unlike other wxTopLevelWindowBase, the mdi child's "GetPosition" is not the
 857 //  same as its GetScreenPosition
 858 void wxMDIChildFrame::DoGetScreenPosition(int *x, int *y) const
 859 {
 860   HWND hWnd = GetHwnd();
 861
 862   RECT rect;
 863   ::GetWindowRect(hWnd, &rect);
 864   if (x)
 865      *x = rect.left;
 866   if (y)
 867      *y = rect.top;
 868 }
 869
 870
 871 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 872 {
 873   RECT rect;
 874   GetWindowRect(GetHwnd(), &rect);
 875   POINT point;
 876   point.x = rect.left;
 877   point.y = rect.top;
 878
 879   // Since we now have the absolute screen coords,
 880   // if there's a parent we must subtract its top left corner
 881   wxMDIParentFrame *mdiParent = GetMDIParent();
 882   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 883
 884   if (x)
 885       *x = point.x;
 886   if (y)
 887       *y = point.y;
 888 }
 889
 890 void wxMDIChildFrame::InternalSetMenuBar()
 891 {
 892     wxMDIParentFrame *parent = GetMDIParent();
 893
 894     InsertWindowMenu(parent->GetClientWindow(),
 895                      m_hMenu, GetMDIWindowMenu(parent));
 896
 897     parent->m_parentFrameActive = false;
 898 }
 899
 900 void wxMDIChildFrame::DetachMenuBar()
 901 {
 902     RemoveWindowMenu(NULL, m_hMenu);
 903     wxFrame::DetachMenuBar();
 904 }
 905
 906 WXHICON wxMDIChildFrame::GetDefaultIcon() const
 907 {
 908     // we don't have any standard icons (any more)
 909     return (WXHICON)0;
 910 }
 911
 912 // ---------------------------------------------------------------------------
 913 // MDI operations
 914 // ---------------------------------------------------------------------------
 915
 916 void wxMDIChildFrame::Maximize(bool maximize)
 917 {
 918     wxMDIParentFrame *parent = GetMDIParent();
 919     if ( parent && parent->GetClientWindow() )
 920     {
 921         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 922                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
 923                       (WPARAM)GetHwnd(), 0);
 924     }
 925 }
 926
 927 void wxMDIChildFrame::Restore()
 928 {
 929     wxMDIParentFrame *parent = GetMDIParent();
 930     if ( parent && parent->GetClientWindow() )
 931     {
 932         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
 933                       (WPARAM) GetHwnd(), 0);
 934     }
 935 }
 936
 937 void wxMDIChildFrame::Activate()
 938 {
 939     wxMDIParentFrame *parent = GetMDIParent();
 940     if ( parent && parent->GetClientWindow() )
 941     {
 942         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
 943                       (WPARAM) GetHwnd(), 0);
 944     }
 945 }
 946
 947 // ---------------------------------------------------------------------------
 948 // MDI window proc and message handlers
 949 // ---------------------------------------------------------------------------
 950
 951 WXLRESULT wxMDIChildFrame::MSWWindowProc(WXUINT message,
 952                                     WXWPARAM wParam,
 953                                     WXLPARAM lParam)
 954 {
 955     WXLRESULT rc = 0;
 956     bool processed = false;
 957
 958     switch ( message )
 959     {
 960         case WM_COMMAND:
 961             {
 962                 WORD id, cmd;
 963                 WXHWND hwnd;
 964                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 965                               &id, &hwnd, &cmd);
 966
 967                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 968             }
 969             break;
 970
 971         case WM_GETMINMAXINFO:
 972             processed = HandleGetMinMaxInfo((MINMAXINFO *)lParam);
 973             break;
 974
 975         case WM_MDIACTIVATE:
 976             {
 977                 WXWORD act;
 978                 WXHWND hwndAct, hwndDeact;
 979                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
 980
 981                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
 982             }
 983             // fall through
 984
 985         case WM_MOVE:
 986             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
 987             // scrollbars if necessary
 988
 989             // fall through
 990
 991         case WM_SIZE:
 992             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
 993             // things happen
 994             MSWDefWindowProc(message, wParam, lParam);
 995             break;
 996
 997         case WM_SYSCOMMAND:
 998             // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
 999             // the message (the base class version does not)
1000             return MSWDefWindowProc(message, wParam, lParam);
1001
1002         case WM_WINDOWPOSCHANGING:
1003             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
1004             break;
1005     }
1006
1007     if ( !processed )
1008         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
1009
1010     return rc;
1011 }
1012
1013 bool wxMDIChildFrame::HandleCommand(WXWORD id_, WXWORD cmd, WXHWND hwnd)
1014 {
1015     // sign extend to int from short before comparing with the other int ids
1016     int id = (signed short)id_;
1017
1018     // In case it's e.g. a toolbar.
1019     if ( hwnd )
1020     {
1021         wxWindow *win = wxFindWinFromHandle(hwnd);
1022         if (win)
1023             return win->MSWCommand(cmd, id);
1024     }
1025
1026     if (wxCurrentPopupMenu)
1027     {
1028         wxMenu *popupMenu = wxCurrentPopupMenu;
1029         wxCurrentPopupMenu = NULL;
1030         if (popupMenu->MSWCommand(cmd, id))
1031             return true;
1032     }
1033
1034     bool processed;
1035     if (GetMenuBar() && GetMenuBar()->FindItem(id))
1036     {
1037         processed = ProcessCommand(id);
1038     }
1039     else
1040     {
1041         processed = false;
1042     }
1043
1044     return processed;
1045 }
1046
1047 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
1048                                         WXHWND hwndAct,
1049                                         WXHWND hwndDeact)
1050 {
1051     wxMDIParentFrame *parent = GetMDIParent();
1052
1053     HMENU menuToSet = 0;
1054
1055     bool activated;
1056
1057     if ( m_hWnd == hwndAct )
1058     {
1059         activated = true;
1060         parent->m_currentChild = this;
1061
1062         HMENU child_menu = (HMENU)GetWinMenu();
1063         if ( child_menu )
1064         {
1065             parent->m_parentFrameActive = false;
1066
1067             menuToSet = child_menu;
1068         }
1069     }
1070     else if ( m_hWnd == hwndDeact )
1071     {
1072         wxASSERT_MSG( parent->m_currentChild == this,
1073                       wxT("can't deactivate MDI child which wasn't active!") );
1074
1075         activated = false;
1076         parent->m_currentChild = NULL;
1077
1078         HMENU parent_menu = (HMENU)parent->GetWinMenu();
1079
1080         // activate the the parent menu only when there is no other child
1081         // that has been activated
1082         if ( parent_menu && !hwndAct )
1083         {
1084             parent->m_parentFrameActive = true;
1085
1086             menuToSet = parent_menu;
1087         }
1088     }
1089     else
1090     {
1091         // we have nothing to do with it
1092         return false;
1093     }
1094
1095     if ( menuToSet )
1096     {
1097         MDISetMenu(parent->GetClientWindow(),
1098                    menuToSet, GetMDIWindowMenu(parent));
1099     }
1100
1101     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
1102     event.SetEventObject( this );
1103
1104     ResetWindowStyle((void *)NULL);
1105
1106     return HandleWindowEvent(event);
1107 }
1108
1109 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
1110 {
1111     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1112
1113     if (!(lpPos->flags & SWP_NOSIZE))
1114     {
1115         RECT rectClient;
1116         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1117         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1118         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1119         {
1120             ::AdjustWindowRectEx(&rectClient, dwStyle, false, dwExStyle);
1121             lpPos->x = rectClient.left;
1122             lpPos->y = rectClient.top;
1123             lpPos->cx = rectClient.right - rectClient.left;
1124             lpPos->cy = rectClient.bottom - rectClient.top;
1125         }
1126     }
1127
1128     return false;
1129 }
1130
1131 bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo)
1132 {
1133     MINMAXINFO *info = (MINMAXINFO *)mmInfo;
1134
1135     // let the default window proc calculate the size of MDI children
1136     // frames because it is based on the size of the MDI client window,
1137     // not on the values specified in wxWindow m_max variables
1138     bool processed = MSWDefWindowProc(WM_GETMINMAXINFO, 0, (LPARAM)mmInfo) != 0;
1139
1140     int minWidth = GetMinWidth(),
1141         minHeight = GetMinHeight();
1142
1143     // but allow GetSizeHints() to set the min size
1144     if ( minWidth != wxDefaultCoord )
1145     {
1146         info->ptMinTrackSize.x = minWidth;
1147
1148         processed = true;
1149     }
1150
1151     if ( minHeight != wxDefaultCoord )
1152     {
1153         info->ptMinTrackSize.y = minHeight;
1154
1155         processed = true;
1156     }
1157
1158     return processed;
1159 }
1160
1161 // ---------------------------------------------------------------------------
1162 // MDI specific message translation/preprocessing
1163 // ---------------------------------------------------------------------------
1164
1165 WXLRESULT wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
1166 {
1167     return DefMDIChildProc(GetHwnd(),
1168                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1169 }
1170
1171 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1172 {
1173     // we must pass the parent frame to ::TranslateAccelerator(), otherwise it
1174     // doesn't do its job correctly for MDI child menus
1175     return MSWDoTranslateMessage(GetMDIParent(), msg);
1176 }
1177
1178 // ---------------------------------------------------------------------------
1179 // misc
1180 // ---------------------------------------------------------------------------
1181
1182 void wxMDIChildFrame::MSWDestroyWindow()
1183 {
1184     wxMDIParentFrame *parent = GetMDIParent();
1185
1186     // Must make sure this handle is invalidated (set to NULL) since all sorts
1187     // of things could happen after the child client is destroyed, but before
1188     // the wxFrame is destroyed.
1189
1190     HWND oldHandle = (HWND)GetHWND();
1191     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1192                 (WPARAM)oldHandle, 0);
1193
1194     if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
1195         ResetWindowStyle((void*) NULL);
1196
1197     if (m_hMenu)
1198     {
1199         ::DestroyMenu((HMENU) m_hMenu);
1200         m_hMenu = 0;
1201     }
1202     wxRemoveHandleAssociation(this);
1203     m_hWnd = 0;
1204 }
1205
1206 // Change the client window's extended style so we don't get a client edge
1207 // style when a child is maximised (a double border looks silly.)
1208 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1209 {
1210     RECT *rect = (RECT *)vrect;
1211     wxMDIParentFrame* pFrameWnd = GetMDIParent();
1212     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1213
1214     if (!pChild || (pChild == this))
1215     {
1216         HWND hwndClient = GetWinHwnd(pFrameWnd->GetClientWindow());
1217         DWORD dwStyle = ::GetWindowLong(hwndClient, GWL_EXSTYLE);
1218
1219         // we want to test whether there is a maximized child, so just set
1220         // dwThisStyle to 0 if there is no child at all
1221         DWORD dwThisStyle = pChild
1222             ? ::GetWindowLong(GetWinHwnd(pChild), GWL_STYLE) : 0;
1223         DWORD dwNewStyle = dwStyle;
1224         if ( dwThisStyle & WS_MAXIMIZE )
1225             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1226         else
1227             dwNewStyle |= WS_EX_CLIENTEDGE;
1228
1229         if (dwStyle != dwNewStyle)
1230         {
1231             // force update of everything
1232             ::RedrawWindow(hwndClient, NULL, NULL,
1233                            RDW_INVALIDATE | RDW_ALLCHILDREN);
1234             ::SetWindowLong(hwndClient, GWL_EXSTYLE, dwNewStyle);
1235             ::SetWindowPos(hwndClient, NULL, 0, 0, 0, 0,
1236                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1237                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1238                            SWP_NOCOPYBITS);
1239             if (rect)
1240                 ::GetClientRect(hwndClient, rect);
1241
1242             return true;
1243         }
1244     }
1245
1246     return false;
1247 }
1248
1249 // ===========================================================================
1250 // wxMDIClientWindow: the window of predefined (by Windows) class which
1251 // contains the child frames
1252 // ===========================================================================
1253
1254 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1255 {
1256     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
1257
1258     CLIENTCREATESTRUCT ccs;
1259     m_windowStyle = style;
1260     m_parent = parent;
1261
1262     ccs.hWindowMenu = GetMDIWindowMenu(parent);
1263     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1264
1265     DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD |
1266                     WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
1267
1268     if ( style & wxHSCROLL )
1269         msStyle |= WS_HSCROLL;
1270     if ( style & wxVSCROLL )
1271         msStyle |= WS_VSCROLL;
1272
1273     DWORD exStyle = WS_EX_CLIENTEDGE;
1274
1275     wxWindowCreationHook hook(this);
1276     m_hWnd = (WXHWND)::CreateWindowEx
1277                        (
1278                         exStyle,
1279                         wxT("MDICLIENT"),
1280                         NULL,
1281                         msStyle,
1282                         0, 0, 0, 0,
1283                         GetWinHwnd(parent),
1284                         NULL,
1285                         wxGetInstance(),
1286                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1287     if ( !m_hWnd )
1288     {
1289         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1290
1291         return false;
1292     }
1293
1294     SubclassWin(m_hWnd);
1295
1296     return true;
1297 }
1298
1299 // Explicitly call default scroll behaviour
1300 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1301 {
1302     // Note: for client windows, the scroll position is not set in
1303     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1304     // scroll position we're at.
1305     // This makes it hard to paint patterns or bitmaps in the background,
1306     // and have the client area scrollable as well.
1307
1308     if ( event.GetOrientation() == wxHORIZONTAL )
1309         m_scrollX = event.GetPosition(); // Always returns zero!
1310     else
1311         m_scrollY = event.GetPosition(); // Always returns zero!
1312
1313     event.Skip();
1314 }
1315
1316 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1317 {
1318     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1319     // client area, you can end up with a non-refreshed portion in the client window
1320     // (see OGL studio sample). So check if the position is changed and if so,
1321     // redraw the MDI child frames.
1322
1323     const wxPoint oldPos = GetPosition();
1324
1325     wxWindow::DoSetSize(x, y, width, height, sizeFlags | wxSIZE_FORCE);
1326
1327     const wxPoint newPos = GetPosition();
1328
1329     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1330     {
1331         if (GetParent())
1332         {
1333             wxWindowList::compatibility_iterator node = GetParent()->GetChildren().GetFirst();
1334             while (node)
1335             {
1336                 wxWindow *child = node->GetData();
1337                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1338                 {
1339                    ::RedrawWindow(GetHwndOf(child),
1340                                   NULL,
1341                                   NULL,
1342                                   RDW_FRAME |
1343                                   RDW_ALLCHILDREN |
1344                                   RDW_INVALIDATE);
1345                 }
1346                 node = node->GetNext();
1347             }
1348         }
1349     }
1350 }
1351
1352 void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
1353 {
1354     // wxMSW prior to 2.5.3 created MDI child frames as visible, which resulted
1355     // in flicker e.g. when the frame contained controls with non-trivial
1356     // layout. Since 2.5.3, the frame is created hidden as all other top level
1357     // windows. In order to maintain backward compatibility, the frame is shown
1358     // in OnIdle, unless Show(false) was called by the programmer before.
1359     if ( m_needsInitialShow )
1360     {
1361         Show(true);
1362     }
1363
1364     // MDI child frames get their WM_SIZE when they're constructed but at this
1365     // moment they don't have any children yet so all child windows will be
1366     // positioned incorrectly when they are added later - to fix this, we
1367     // generate an artificial size event here
1368     if ( m_needsResize )
1369     {
1370         m_needsResize = false; // avoid any possibility of recursion
1371
1372         SendSizeEvent();
1373     }
1374
1375     event.Skip();
1376 }
1377
1378 // ---------------------------------------------------------------------------
1379 // non member functions
1380 // ---------------------------------------------------------------------------
1381
1382 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1383 {
1384     if ( hmenuFrame || hmenuWindow )
1385     {
1386         if ( !::SendMessage(GetWinHwnd(win),
1387                             WM_MDISETMENU,
1388                             (WPARAM)hmenuFrame,
1389                             (LPARAM)hmenuWindow) )
1390         {
1391 #ifdef __WXDEBUG__
1392             DWORD err = ::GetLastError();
1393             if ( err )
1394                 wxLogApiError(_T("SendMessage(WM_MDISETMENU)"), err);
1395 #endif // __WXDEBUG__
1396         }
1397     }
1398
1399     // update menu bar of the parent window
1400     wxWindow *parent = win->GetParent();
1401     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1402
1403     ::SendMessage(GetWinHwnd(win), WM_MDIREFRESHMENU, 0, 0L);
1404
1405     ::DrawMenuBar(GetWinHwnd(parent));
1406 }
1407
1408 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
1409 {
1410     // Try to insert Window menu in front of Help, otherwise append it.
1411     HMENU hmenu = (HMENU)menu;
1412
1413     if (subMenu)
1414     {
1415         int N = GetMenuItemCount(hmenu);
1416         bool success = false;
1417         for ( int i = 0; i < N; i++ )
1418         {
1419             wxChar buf[256];
1420             int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1421             if ( chars == 0 )
1422             {
1423                 wxLogLastError(wxT("GetMenuString"));
1424
1425                 continue;
1426             }
1427
1428             wxString strBuf(buf);
1429             if ( wxStripMenuCodes(strBuf) == wxGetStockLabel(wxID_HELP,false) )
1430             {
1431                 success = true;
1432                 ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1433                              (UINT_PTR)subMenu, _("&Window").wx_str());
1434                 break;
1435             }
1436         }
1437
1438         if ( !success )
1439         {
1440             ::AppendMenu(hmenu, MF_POPUP,
1441                          (UINT_PTR)subMenu, _("&Window").wx_str());
1442         }
1443     }
1444
1445     MDISetMenu(win, hmenu, subMenu);
1446 }
1447
1448 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu)
1449 {
1450     HMENU hMenu = (HMENU)menu;
1451
1452     if ( hMenu )
1453     {
1454         wxChar buf[1024];
1455
1456         int N = ::GetMenuItemCount(hMenu);
1457         for ( int i = 0; i < N; i++ )
1458         {
1459             if ( !::GetMenuString(hMenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) )
1460             {
1461                 // Ignore successful read of menu string with length 0 which
1462                 // occurs, for example, for a maximized MDI childs system menu
1463                 if ( ::GetLastError() != 0 )
1464                 {
1465                     wxLogLastError(wxT("GetMenuString"));
1466                 }
1467
1468                 continue;
1469             }
1470
1471             if ( wxStrcmp(buf, _("&Window")) == 0 )
1472             {
1473                 if ( !::RemoveMenu(hMenu, i, MF_BYPOSITION) )
1474                 {
1475                     wxLogLastError(wxT("RemoveMenu"));
1476                 }
1477
1478                 break;
1479             }
1480         }
1481     }
1482
1483     if ( win )
1484     {
1485         // we don't change the windows menu, but we update the main one
1486         MDISetMenu(win, hMenu, NULL);
1487     }
1488 }
1489
1490 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1491                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1492 {
1493     *activate = true;
1494     *hwndAct = (WXHWND)lParam;
1495     *hwndDeact = (WXHWND)wParam;
1496 }
1497
1498 #endif // wxUSE_MDI && !defined(__WXUNIVERSAL__)