src/msw/mdi.cpp

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