src/msw/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/mdi.cpp
   3 // Purpose:     MDI classes for wxMSW
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin on 2008-11-04 to use the base classes
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 //              (c) 2008-2009 Vadim Zeitlin
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // ===========================================================================
  14 // declarations
  15 // ===========================================================================
  16
  17 // ---------------------------------------------------------------------------
  18 // headers
  19 // ---------------------------------------------------------------------------
  20
  21 // For compilers that support precompilation, includes "wx.h".
  22 #include "wx/wxprec.h"
  23
  24 #ifdef __BORLANDC__
  25     #pragma hdrstop
  26 #endif
  27
  28 #if wxUSE_MDI && !defined(__WXUNIVERSAL__)
  29
  30 #include "wx/mdi.h"
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/frame.h"
  34     #include "wx/menu.h"
  35     #include "wx/app.h"
  36     #include "wx/utils.h"
  37     #include "wx/dialog.h"
  38     #include "wx/statusbr.h"
  39     #include "wx/settings.h"
  40     #include "wx/intl.h"
  41     #include "wx/log.h"
  42     #include "wx/toolbar.h"
  43 #endif
  44
  45 #include "wx/stockitem.h"
  46 #include "wx/msw/private.h"
  47
  48 #include <string.h>
  49
  50 // ---------------------------------------------------------------------------
  51 // global variables
  52 // ---------------------------------------------------------------------------
  53
  54 extern wxMenu *wxCurrentPopupMenu;
  55
  56 extern void wxRemoveHandleAssociation(wxWindow *win);
  57
  58 namespace
  59 {
  60
  61 // ---------------------------------------------------------------------------
  62 // constants
  63 // ---------------------------------------------------------------------------
  64
  65 // This range gives a maximum of 500 MDI children. Should be enough :-)
  66 const int wxFIRST_MDI_CHILD = 4100;
  67 const int wxLAST_MDI_CHILD = 4600;
  68
  69 // The MDI "Window" menu label
  70 const char *WINDOW_MENU_LABEL = gettext_noop("&Window");
  71
  72 // ---------------------------------------------------------------------------
  73 // private functions
  74 // ---------------------------------------------------------------------------
  75
  76 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
  77 // of the parent of win (which is supposed to be the MDI client window)
  78 void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
  79
  80 // insert the window menu (subMenu) into menu just before "Help" submenu or at
  81 // the very end if not found
  82 void MDIInsertWindowMenu(wxWindow *win, WXHMENU hMenu, HMENU subMenu);
  83
  84 // Remove the window menu
  85 void MDIRemoveWindowMenu(wxWindow *win, WXHMENU hMenu);
  86
  87 // unpack the parameters of WM_MDIACTIVATE message
  88 void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
  89                        WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
  90
  91 // return the HMENU of the MDI menu
  92 //
  93 // this function works correctly even when we don't have a window menu and just
  94 // returns 0 then
  95 inline HMENU GetMDIWindowMenu(wxMDIParentFrame *frame)
  96 {
  97     wxMenu *menu = frame->GetWindowMenu();
  98     return menu ? GetHmenuOf(menu) : 0;
  99 }
 100
 101 } // anonymous namespace
 102
 103 // ===========================================================================
 104 // implementation
 105 // ===========================================================================
 106
 107 // ---------------------------------------------------------------------------
 108 // wxWin macros
 109 // ---------------------------------------------------------------------------
 110
 111 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 112 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 113 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 114
 115 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 116     EVT_SIZE(wxMDIParentFrame::OnSize)
 117     EVT_ICONIZE(wxMDIParentFrame::OnIconized)
 118     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 119
 120 #if wxUSE_MENUS
 121     EVT_MENU_RANGE(wxFIRST_MDI_CHILD, wxLAST_MDI_CHILD,
 122                    wxMDIParentFrame::OnMDIChild)
 123     EVT_MENU_RANGE(wxID_MDI_WINDOW_FIRST, wxID_MDI_WINDOW_LAST,
 124                    wxMDIParentFrame::OnMDICommand)
 125 #endif // wxUSE_MENUS
 126 END_EVENT_TABLE()
 127
 128 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 129     EVT_IDLE(wxMDIChildFrame::OnIdle)
 130 END_EVENT_TABLE()
 131
 132 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 133     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 134 END_EVENT_TABLE()
 135
 136 // ===========================================================================
 137 // wxMDIParentFrame: the frame which contains the client window which manages
 138 // the children
 139 // ===========================================================================
 140
 141 void wxMDIParentFrame::Init()
 142 {
 143 #if wxUSE_MENUS && wxUSE_ACCEL
 144   // the default menu doesn't have any accelerators (even if we have it)
 145   m_accelWindowMenu = NULL;
 146 #endif // wxUSE_MENUS && wxUSE_ACCEL
 147 }
 148
 149 bool wxMDIParentFrame::Create(wxWindow *parent,
 150                               wxWindowID id,
 151                               const wxString& title,
 152                               const wxPoint& pos,
 153                               const wxSize& size,
 154                               long style,
 155                               const wxString& name)
 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       // normal case: we have the window menu, so construct it
 162       m_windowMenu = new wxMenu;
 163
 164       m_windowMenu->Append(wxID_MDI_WINDOW_CASCADE, _("&Cascade"));
 165       m_windowMenu->Append(wxID_MDI_WINDOW_TILE_HORZ, _("Tile &Horizontally"));
 166       m_windowMenu->Append(wxID_MDI_WINDOW_TILE_VERT, _("Tile &Vertically"));
 167       m_windowMenu->AppendSeparator();
 168       m_windowMenu->Append(wxID_MDI_WINDOW_ARRANGE_ICONS, _("&Arrange Icons"));
 169       m_windowMenu->Append(wxID_MDI_WINDOW_NEXT, _("&Next"));
 170       m_windowMenu->Append(wxID_MDI_WINDOW_PREV, _("&Previous"));
 171   }
 172
 173   if (!parent)
 174     wxTopLevelWindows.Append(this);
 175
 176   SetName(name);
 177   m_windowStyle = style;
 178
 179   if ( parent )
 180       parent->AddChild(this);
 181
 182   if ( id != wxID_ANY )
 183     m_windowId = id;
 184   else
 185     m_windowId = NewControlId();
 186
 187   WXDWORD exflags;
 188   WXDWORD msflags = MSWGetCreateWindowFlags(&exflags);
 189   msflags &= ~WS_VSCROLL;
 190   msflags &= ~WS_HSCROLL;
 191
 192   if ( !wxWindow::MSWCreate(wxApp::GetRegisteredClassName(wxT("wxMDIFrame")),
 193                             title.wx_str(),
 194                             pos, size,
 195                             msflags,
 196                             exflags) )
 197   {
 198       return false;
 199   }
 200
 201   SetOwnBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 202
 203   // unlike (almost?) all other windows, frames are created hidden
 204   m_isShown = false;
 205
 206   return true;
 207 }
 208
 209 wxMDIParentFrame::~wxMDIParentFrame()
 210 {
 211     // see comment in ~wxMDIChildFrame
 212 #if wxUSE_TOOLBAR
 213     m_frameToolBar = NULL;
 214 #endif
 215 #if wxUSE_STATUSBAR
 216     m_frameStatusBar = NULL;
 217 #endif // wxUSE_STATUSBAR
 218
 219 #if wxUSE_MENUS && wxUSE_ACCEL
 220     delete m_accelWindowMenu;
 221 #endif // wxUSE_MENUS && wxUSE_ACCEL
 222
 223     DestroyChildren();
 224
 225     // the MDI frame menubar is not automatically deleted by Windows unlike for
 226     // the normal frames
 227     if ( m_hMenu )
 228         ::DestroyMenu((HMENU)m_hMenu);
 229
 230     if ( m_clientWindow )
 231     {
 232         if ( m_clientWindow->MSWGetOldWndProc() )
 233             m_clientWindow->UnsubclassWin();
 234
 235         m_clientWindow->SetHWND(0);
 236         delete m_clientWindow;
 237     }
 238 }
 239
 240 // ----------------------------------------------------------------------------
 241 // wxMDIParentFrame child management
 242 // ----------------------------------------------------------------------------
 243
 244 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 245 {
 246     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 247                                     WM_MDIGETACTIVE, 0, 0L);
 248     if ( !hWnd )
 249         return NULL;
 250
 251     return static_cast<wxMDIChildFrame *>(wxFindWinFromHandle(hWnd));
 252 }
 253
 254 int wxMDIParentFrame::GetChildFramesCount() const
 255 {
 256     int count = 0;
 257     for ( wxWindowList::const_iterator i = GetChildren().begin();
 258           i != GetChildren().end();
 259           ++i )
 260     {
 261         if ( wxDynamicCast(*i, wxMDIChildFrame) )
 262             count++;
 263     }
 264
 265     return count;
 266 }
 267
 268 #if wxUSE_MENUS
 269
 270 void wxMDIParentFrame::AddMDIChild(wxMDIChildFrame * WXUNUSED(child))
 271 {
 272     switch ( GetChildFramesCount() )
 273     {
 274         case 1:
 275             // first MDI child was just added, we need to insert the window
 276             // menu now if we have it
 277             AddWindowMenu();
 278
 279             // and disable the items which can't be used until we have more
 280             // than one child
 281             UpdateWindowMenu(false);
 282             break;
 283
 284         case 2:
 285             // second MDI child was added, enable the menu items which were
 286             // disabled because they didn't make sense for a single window
 287             UpdateWindowMenu(true);
 288             break;
 289     }
 290 }
 291
 292 void wxMDIParentFrame::RemoveMDIChild(wxMDIChildFrame * WXUNUSED(child))
 293 {
 294     switch ( GetChildFramesCount() )
 295     {
 296         case 1:
 297             // last MDI child is being removed, remove the now unnecessary
 298             // window menu too
 299             RemoveWindowMenu();
 300
 301             // there is no need to call UpdateWindowMenu(true) here so this is
 302             // not quite symmetric to AddMDIChild() above
 303             break;
 304
 305         case 2:
 306             // only one MDI child is going to remain, disable the menu commands
 307             // which don't make sense for a single child window
 308             UpdateWindowMenu(false);
 309             break;
 310     }
 311 }
 312
 313 // ----------------------------------------------------------------------------
 314 // wxMDIParentFrame window menu handling
 315 // ----------------------------------------------------------------------------
 316
 317 void wxMDIParentFrame::AddWindowMenu()
 318 {
 319     if ( m_windowMenu )
 320         MDIInsertWindowMenu(GetClientWindow(), m_hMenu, GetMDIWindowMenu(this));
 321 }
 322
 323 void wxMDIParentFrame::RemoveWindowMenu()
 324 {
 325     if ( m_windowMenu )
 326         MDIRemoveWindowMenu(GetClientWindow(), m_hMenu);
 327 }
 328
 329 void wxMDIParentFrame::UpdateWindowMenu(bool enable)
 330 {
 331     if ( m_windowMenu )
 332     {
 333         m_windowMenu->Enable(wxID_MDI_WINDOW_NEXT, enable);
 334         m_windowMenu->Enable(wxID_MDI_WINDOW_PREV, enable);
 335     }
 336 }
 337
 338 #if wxUSE_MENUS_NATIVE
 339
 340 void wxMDIParentFrame::InternalSetMenuBar()
 341 {
 342     if ( GetActiveChild() )
 343     {
 344         AddWindowMenu();
 345     }
 346     else // we don't have any MDI children yet
 347     {
 348         // wait until we do to add the window menu but do set the main menu for
 349         // now (this is done by AddWindowMenu() as a side effect)
 350         MDISetMenu(GetClientWindow(), (HMENU)m_hMenu, NULL);
 351     }
 352 }
 353
 354 #endif // wxUSE_MENUS_NATIVE
 355
 356 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 357 {
 358     if ( menu != m_windowMenu )
 359     {
 360         // notice that Remove/AddWindowMenu() are safe to call even when
 361         // m_windowMenu is NULL
 362         RemoveWindowMenu();
 363
 364         delete m_windowMenu;
 365
 366         m_windowMenu = menu;
 367
 368         AddWindowMenu();
 369     }
 370
 371 #if wxUSE_ACCEL
 372     delete m_accelWindowMenu;
 373     m_accelWindowMenu = NULL;
 374
 375     if ( menu && menu->HasAccels() )
 376         m_accelWindowMenu = menu->CreateAccelTable();
 377 #endif // wxUSE_ACCEL
 378 }
 379
 380 // ----------------------------------------------------------------------------
 381 // wxMDIParentFrame other menu-related stuff
 382 // ----------------------------------------------------------------------------
 383
 384 void wxMDIParentFrame::DoMenuUpdates(wxMenu* menu)
 385 {
 386     wxMDIChildFrame *child = GetActiveChild();
 387     if ( child )
 388     {
 389         wxEvtHandler* source = child->GetEventHandler();
 390         wxMenuBar* bar = child->GetMenuBar();
 391
 392         if (menu)
 393         {
 394             menu->UpdateUI(source);
 395         }
 396         else
 397         {
 398             if ( bar != NULL )
 399             {
 400                 int nCount = bar->GetMenuCount();
 401                 for (int n = 0; n < nCount; n++)
 402                     bar->GetMenu(n)->UpdateUI(source);
 403             }
 404         }
 405     }
 406     else
 407     {
 408         wxFrameBase::DoMenuUpdates(menu);
 409     }
 410 }
 411
 412 wxMenuItem *wxMDIParentFrame::FindItemInMenuBar(int menuId) const
 413 {
 414     wxMenuItem *item = wxFrame::FindItemInMenuBar(menuId);
 415     if ( !item && GetActiveChild() )
 416     {
 417         item = GetActiveChild()->FindItemInMenuBar(menuId);
 418     }
 419
 420     if ( !item && m_windowMenu )
 421         item = m_windowMenu->FindItem(menuId);
 422
 423     return item;
 424 }
 425
 426 WXHMENU wxMDIParentFrame::MSWGetActiveMenu() const
 427 {
 428     wxMDIChildFrame * const child  = GetActiveChild();
 429     if ( child )
 430     {
 431         const WXHMENU hmenu = child->MSWGetActiveMenu();
 432         if ( hmenu )
 433             return hmenu;
 434     }
 435
 436     return wxFrame::MSWGetActiveMenu();
 437 }
 438
 439 #endif // wxUSE_MENUS
 440
 441 // ----------------------------------------------------------------------------
 442 // wxMDIParentFrame event handling
 443 // ----------------------------------------------------------------------------
 444
 445 void wxMDIParentFrame::UpdateClientSize()
 446 {
 447     if ( GetClientWindow() )
 448     {
 449         int width, height;
 450         GetClientSize(&width, &height);
 451
 452         GetClientWindow()->SetSize(0, 0, width, height);
 453     }
 454 }
 455
 456 void wxMDIParentFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 457 {
 458     UpdateClientSize();
 459
 460     // do not call event.Skip() here, it somehow messes up MDI client window
 461 }
 462
 463 void wxMDIParentFrame::OnIconized(wxIconizeEvent& event)
 464 {
 465     event.Skip();
 466
 467     if ( !event.IsIconized() )
 468         UpdateClientSize();
 469 }
 470
 471 // Responds to colour changes, and passes event on to children.
 472 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 473 {
 474     if ( m_clientWindow )
 475     {
 476         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 477         m_clientWindow->Refresh();
 478     }
 479
 480     event.Skip();
 481 }
 482
 483 WXHICON wxMDIParentFrame::GetDefaultIcon() const
 484 {
 485     // we don't have any standard icons (any more)
 486     return (WXHICON)0;
 487 }
 488
 489 // ---------------------------------------------------------------------------
 490 // MDI operations
 491 // ---------------------------------------------------------------------------
 492
 493 void wxMDIParentFrame::Cascade()
 494 {
 495     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 496 }
 497
 498 void wxMDIParentFrame::Tile(wxOrientation orient)
 499 {
 500     wxASSERT_MSG( orient == wxHORIZONTAL || orient == wxVERTICAL,
 501                   wxT("invalid orientation value") );
 502
 503     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE,
 504                   orient == wxHORIZONTAL ? MDITILE_HORIZONTAL
 505                                          : MDITILE_VERTICAL, 0);
 506 }
 507
 508 void wxMDIParentFrame::ArrangeIcons()
 509 {
 510     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 511 }
 512
 513 void wxMDIParentFrame::ActivateNext()
 514 {
 515     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 516 }
 517
 518 void wxMDIParentFrame::ActivatePrevious()
 519 {
 520     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 521 }
 522
 523 // ---------------------------------------------------------------------------
 524 // the MDI parent frame window proc
 525 // ---------------------------------------------------------------------------
 526
 527 WXLRESULT wxMDIParentFrame::MSWWindowProc(WXUINT message,
 528                                           WXWPARAM wParam,
 529                                           WXLPARAM lParam)
 530 {
 531     WXLRESULT rc = 0;
 532     bool processed = false;
 533
 534     switch ( message )
 535     {
 536         case WM_ACTIVATE:
 537             {
 538                 WXWORD state, minimized;
 539                 WXHWND hwnd;
 540                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 541
 542                 processed = HandleActivate(state, minimized != 0, hwnd);
 543             }
 544             break;
 545
 546         case WM_COMMAND:
 547             // system messages such as SC_CLOSE are sent as WM_COMMANDs to the
 548             // parent MDI frame and we must let the DefFrameProc() have them
 549             // for these commands to work (without it, closing the maximized
 550             // MDI children doesn't work, for example)
 551             {
 552                 WXWORD id, cmd;
 553                 WXHWND hwnd;
 554                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 555
 556                 if ( cmd == 0 /* menu */ &&
 557                         id >= SC_SIZE /* first system menu command */ )
 558                 {
 559                     MSWDefWindowProc(message, wParam, lParam);
 560                     processed = true;
 561                 }
 562             }
 563             break;
 564
 565         case WM_CREATE:
 566             m_clientWindow = OnCreateClient();
 567             // Uses own style for client style
 568             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 569             {
 570                 wxLogMessage(_("Failed to create MDI parent frame."));
 571
 572                 rc = -1;
 573             }
 574
 575             processed = true;
 576             break;
 577     }
 578
 579     if ( !processed )
 580         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 581
 582     return rc;
 583 }
 584
 585 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 586 {
 587     bool processed = false;
 588
 589     if ( wxWindow::HandleActivate(state, minimized, activate) )
 590     {
 591         // already processed
 592         processed = true;
 593     }
 594
 595     // If this window is an MDI parent, we must also send an OnActivate message
 596     // to the current child.
 597     if ( GetActiveChild() &&
 598          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 599     {
 600         wxActivateEvent event(wxEVT_ACTIVATE, true, GetActiveChild()->GetId());
 601         event.SetEventObject( GetActiveChild() );
 602         if ( GetActiveChild()->HandleWindowEvent(event) )
 603             processed = true;
 604     }
 605
 606     return processed;
 607 }
 608
 609 #if wxUSE_MENUS
 610
 611 void wxMDIParentFrame::OnMDIChild(wxCommandEvent& event)
 612 {
 613     wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
 614     while ( node )
 615     {
 616         wxWindow *child = node->GetData();
 617         if ( child->GetHWND() )
 618         {
 619             int childId = wxGetWindowId(child->GetHWND());
 620             if ( childId == event.GetId() )
 621             {
 622                 ::SendMessage( GetWinHwnd(GetClientWindow()),
 623                         WM_MDIACTIVATE,
 624                         (WPARAM)child->GetHWND(), 0);
 625                 return;
 626             }
 627         }
 628
 629         node = node->GetNext();
 630     }
 631
 632     wxFAIL_MSG( "unknown MDI child selected?" );
 633 }
 634
 635 void wxMDIParentFrame::OnMDICommand(wxCommandEvent& event)
 636 {
 637     WXWPARAM wParam = 0;
 638     WXLPARAM lParam = 0;
 639     int msg;
 640     switch ( event.GetId() )
 641     {
 642         case wxID_MDI_WINDOW_CASCADE:
 643             msg = WM_MDICASCADE;
 644             wParam = MDITILE_SKIPDISABLED;
 645             break;
 646
 647         case wxID_MDI_WINDOW_TILE_HORZ:
 648             wParam |= MDITILE_HORIZONTAL;
 649             // fall through
 650
 651         case wxID_MDI_WINDOW_TILE_VERT:
 652             if ( !wParam )
 653                 wParam = MDITILE_VERTICAL;
 654             msg = WM_MDITILE;
 655             wParam |= MDITILE_SKIPDISABLED;
 656             break;
 657
 658         case wxID_MDI_WINDOW_ARRANGE_ICONS:
 659             msg = WM_MDIICONARRANGE;
 660             break;
 661
 662         case wxID_MDI_WINDOW_NEXT:
 663             msg = WM_MDINEXT;
 664             lParam = 0;         // next child
 665             break;
 666
 667         case wxID_MDI_WINDOW_PREV:
 668             msg = WM_MDINEXT;
 669             lParam = 1;         // previous child
 670             break;
 671
 672         default:
 673             wxFAIL_MSG( "unknown MDI command" );
 674             return;
 675     }
 676
 677     ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, lParam);
 678 }
 679
 680 #endif // wxUSE_MENUS
 681
 682 bool wxMDIParentFrame::TryBefore(wxEvent& event)
 683 {
 684     // menu (and toolbar) events should be sent to the active child frame
 685     // first, if any
 686     if ( event.GetEventType() == wxEVT_COMMAND_MENU_SELECTED )
 687     {
 688         wxMDIChildFrame * const child = GetActiveChild();
 689         if ( child && child->ProcessWindowEventLocally(event) )
 690             return true;
 691     }
 692
 693     return wxMDIParentFrameBase::TryBefore(event);
 694 }
 695
 696 WXLRESULT wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 697                                         WXWPARAM wParam,
 698                                         WXLPARAM lParam)
 699 {
 700     WXHWND clientWnd;
 701     if ( GetClientWindow() )
 702         clientWnd = GetClientWindow()->GetHWND();
 703     else
 704         clientWnd = 0;
 705
 706     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 707 }
 708
 709 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 710 {
 711     MSG *pMsg = (MSG *)msg;
 712
 713     // first let the current child get it
 714     wxMDIChildFrame * const child = GetActiveChild();
 715     if ( child && child->MSWTranslateMessage(msg) )
 716     {
 717         return true;
 718     }
 719
 720     // then try out accelerator table (will also check the accelerators for the
 721     // normal menu items)
 722     if ( wxFrame::MSWTranslateMessage(msg) )
 723     {
 724         return true;
 725     }
 726
 727 #if wxUSE_MENUS && wxUSE_ACCEL
 728     // but it doesn't check for the (custom) accelerators of the window menu
 729     // items as it's not part of the menu bar as it's handled by Windows itself
 730     // so we need to do this explicitly
 731     if ( m_accelWindowMenu && m_accelWindowMenu->Translate(this, msg) )
 732         return true;
 733 #endif // wxUSE_MENUS && wxUSE_ACCEL
 734
 735     // finally, check for MDI specific built-in accelerators
 736     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 737     {
 738         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 739             return true;
 740     }
 741
 742     return false;
 743 }
 744
 745 // ===========================================================================
 746 // wxMDIChildFrame
 747 // ===========================================================================
 748
 749 void wxMDIChildFrame::Init()
 750 {
 751     m_needsResize = true;
 752     m_needsInitialShow = true;
 753 }
 754
 755 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 756                              wxWindowID id,
 757                              const wxString& title,
 758                              const wxPoint& pos,
 759                              const wxSize& size,
 760                              long style,
 761                              const wxString& name)
 762 {
 763     m_mdiParent = parent;
 764
 765   SetName(name);
 766
 767   if ( id != wxID_ANY )
 768     m_windowId = id;
 769   else
 770     m_windowId = NewControlId();
 771
 772   if ( parent )
 773   {
 774       parent->AddChild(this);
 775   }
 776
 777   int x = pos.x;
 778   int y = pos.y;
 779   int width = size.x;
 780   int height = size.y;
 781
 782   MDICREATESTRUCT mcs;
 783
 784   wxString className =
 785       wxApp::GetRegisteredClassName(wxT("wxMDIChildFrame"), COLOR_WINDOW);
 786   if ( !(style & wxFULL_REPAINT_ON_RESIZE) )
 787       className += wxApp::GetNoRedrawClassSuffix();
 788
 789   mcs.szClass = className.wx_str();
 790   mcs.szTitle = title.wx_str();
 791   mcs.hOwner = wxGetInstance();
 792   if (x != wxDefaultCoord)
 793       mcs.x = x;
 794   else
 795       mcs.x = CW_USEDEFAULT;
 796
 797   if (y != wxDefaultCoord)
 798       mcs.y = y;
 799   else
 800       mcs.y = CW_USEDEFAULT;
 801
 802   if (width != wxDefaultCoord)
 803       mcs.cx = width;
 804   else
 805       mcs.cx = CW_USEDEFAULT;
 806
 807   if (height != wxDefaultCoord)
 808       mcs.cy = height;
 809   else
 810       mcs.cy = CW_USEDEFAULT;
 811
 812   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
 813   if (style & wxMINIMIZE_BOX)
 814     msflags |= WS_MINIMIZEBOX;
 815   if (style & wxMAXIMIZE_BOX)
 816     msflags |= WS_MAXIMIZEBOX;
 817   if (style & wxRESIZE_BORDER)
 818     msflags |= WS_THICKFRAME;
 819   if (style & wxSYSTEM_MENU)
 820     msflags |= WS_SYSMENU;
 821   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 822     msflags |= WS_MINIMIZE;
 823   if (style & wxMAXIMIZE)
 824     msflags |= WS_MAXIMIZE;
 825   if (style & wxCAPTION)
 826     msflags |= WS_CAPTION;
 827
 828   mcs.style = msflags;
 829
 830   mcs.lParam = 0;
 831
 832   wxWindowCreationHook hook(this);
 833
 834   m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 835                                  WM_MDICREATE, 0, (LPARAM)&mcs);
 836
 837   if ( !m_hWnd )
 838   {
 839       wxLogLastError(wxT("WM_MDICREATE"));
 840       return false;
 841   }
 842
 843   SubclassWin(m_hWnd);
 844
 845   parent->AddMDIChild(this);
 846
 847   return true;
 848 }
 849
 850 wxMDIChildFrame::~wxMDIChildFrame()
 851 {
 852     // if we hadn't been created, there is nothing to destroy
 853     if ( !m_hWnd )
 854         return;
 855
 856     GetMDIParent()->RemoveMDIChild(this);
 857
 858     // will be destroyed by DestroyChildren() but reset them before calling it
 859     // to avoid using dangling pointers if a callback comes in the meanwhile
 860 #if wxUSE_TOOLBAR
 861     m_frameToolBar = NULL;
 862 #endif
 863 #if wxUSE_STATUSBAR
 864     m_frameStatusBar = NULL;
 865 #endif // wxUSE_STATUSBAR
 866
 867     DestroyChildren();
 868
 869     MDIRemoveWindowMenu(NULL, m_hMenu);
 870
 871     MSWDestroyWindow();
 872 }
 873
 874 bool wxMDIChildFrame::Show(bool show)
 875 {
 876     m_needsInitialShow = false;
 877
 878     if (!wxFrame::Show(show))
 879         return false;
 880
 881     // KH: Without this call, new MDI children do not become active.
 882     // This was added here after the same BringWindowToTop call was
 883     // removed from wxTopLevelWindow::Show (November 2005)
 884     if ( show )
 885         ::BringWindowToTop(GetHwnd());
 886
 887     // we need to refresh the MDI frame window menu to include (or exclude if
 888     // we've been hidden) this frame
 889     wxMDIParentFrame * const parent = GetMDIParent();
 890     MDISetMenu(parent->GetClientWindow(), NULL, NULL);
 891
 892     return true;
 893 }
 894
 895 void
 896 wxMDIChildFrame::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 897 {
 898     // we need to disable client area origin adjustments used for the child
 899     // windows for the frame itself
 900     wxMDIChildFrameBase::DoSetSize(x, y, width, height, sizeFlags);
 901 }
 902
 903 // Set the client size (i.e. leave the calculation of borders etc.
 904 // to wxWidgets)
 905 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 906 {
 907   HWND hWnd = GetHwnd();
 908
 909   RECT rect;
 910   ::GetClientRect(hWnd, &rect);
 911
 912   RECT rect2;
 913   GetWindowRect(hWnd, &rect2);
 914
 915   // Find the difference between the entire window (title bar and all)
 916   // and the client area; add this to the new client size to move the
 917   // window
 918   int actual_width = rect2.right - rect2.left - rect.right + width;
 919   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 920
 921 #if wxUSE_STATUSBAR
 922   if (GetStatusBar() && GetStatusBar()->IsShown())
 923   {
 924     int sx, sy;
 925     GetStatusBar()->GetSize(&sx, &sy);
 926     actual_height += sy;
 927   }
 928 #endif // wxUSE_STATUSBAR
 929
 930   POINT point;
 931   point.x = rect2.left;
 932   point.y = rect2.top;
 933
 934   // If there's an MDI parent, must subtract the parent's top left corner
 935   // since MoveWindow moves relative to the parent
 936   wxMDIParentFrame * const mdiParent = GetMDIParent();
 937   ::ScreenToClient(GetHwndOf(mdiParent->GetClientWindow()), &point);
 938
 939   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)true);
 940
 941   wxSize size(width, height);
 942   wxSizeEvent event(size, m_windowId);
 943   event.SetEventObject( this );
 944   HandleWindowEvent(event);
 945 }
 946
 947 // Unlike other wxTopLevelWindowBase, the mdi child's "GetPosition" is not the
 948 //  same as its GetScreenPosition
 949 void wxMDIChildFrame::DoGetScreenPosition(int *x, int *y) const
 950 {
 951   HWND hWnd = GetHwnd();
 952
 953   RECT rect;
 954   ::GetWindowRect(hWnd, &rect);
 955   if (x)
 956      *x = rect.left;
 957   if (y)
 958      *y = rect.top;
 959 }
 960
 961
 962 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 963 {
 964   RECT rect;
 965   GetWindowRect(GetHwnd(), &rect);
 966   POINT point;
 967   point.x = rect.left;
 968   point.y = rect.top;
 969
 970   // Since we now have the absolute screen coords,
 971   // if there's a parent we must subtract its top left corner
 972   wxMDIParentFrame * const mdiParent = GetMDIParent();
 973   ::ScreenToClient(GetHwndOf(mdiParent->GetClientWindow()), &point);
 974
 975   if (x)
 976       *x = point.x;
 977   if (y)
 978       *y = point.y;
 979 }
 980
 981 void wxMDIChildFrame::InternalSetMenuBar()
 982 {
 983     wxMDIParentFrame * const parent = GetMDIParent();
 984
 985     MDIInsertWindowMenu(parent->GetClientWindow(),
 986                      m_hMenu, GetMDIWindowMenu(parent));
 987 }
 988
 989 void wxMDIChildFrame::DetachMenuBar()
 990 {
 991     MDIRemoveWindowMenu(NULL, m_hMenu);
 992     wxFrame::DetachMenuBar();
 993 }
 994
 995 WXHICON wxMDIChildFrame::GetDefaultIcon() const
 996 {
 997     // we don't have any standard icons (any more)
 998     return (WXHICON)0;
 999 }
1000
1001 // ---------------------------------------------------------------------------
1002 // MDI operations
1003 // ---------------------------------------------------------------------------
1004
1005 void wxMDIChildFrame::Maximize(bool maximize)
1006 {
1007     wxMDIParentFrame * const parent = GetMDIParent();
1008     if ( parent && parent->GetClientWindow() )
1009     {
1010         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
1011                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
1012                       (WPARAM)GetHwnd(), 0);
1013     }
1014 }
1015
1016 void wxMDIChildFrame::Restore()
1017 {
1018     wxMDIParentFrame * const parent = GetMDIParent();
1019     if ( parent && parent->GetClientWindow() )
1020     {
1021         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
1022                       (WPARAM) GetHwnd(), 0);
1023     }
1024 }
1025
1026 void wxMDIChildFrame::Activate()
1027 {
1028     wxMDIParentFrame * const parent = GetMDIParent();
1029     if ( parent && parent->GetClientWindow() )
1030     {
1031         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
1032                       (WPARAM) GetHwnd(), 0);
1033     }
1034 }
1035
1036 // ---------------------------------------------------------------------------
1037 // MDI window proc and message handlers
1038 // ---------------------------------------------------------------------------
1039
1040 WXLRESULT wxMDIChildFrame::MSWWindowProc(WXUINT message,
1041                                          WXWPARAM wParam,
1042                                          WXLPARAM lParam)
1043 {
1044     WXLRESULT rc = 0;
1045     bool processed = false;
1046
1047     switch ( message )
1048     {
1049         case WM_GETMINMAXINFO:
1050             processed = HandleGetMinMaxInfo((MINMAXINFO *)lParam);
1051             break;
1052
1053         case WM_MDIACTIVATE:
1054             {
1055                 WXWORD act;
1056                 WXHWND hwndAct, hwndDeact;
1057                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
1058
1059                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
1060             }
1061             // fall through
1062
1063         case WM_MOVE:
1064             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
1065             // scrollbars if necessary
1066
1067             // fall through
1068
1069         case WM_SIZE:
1070             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
1071             // things happen
1072             MSWDefWindowProc(message, wParam, lParam);
1073             break;
1074
1075         case WM_WINDOWPOSCHANGING:
1076             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
1077             break;
1078     }
1079
1080     if ( !processed )
1081         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
1082
1083     return rc;
1084 }
1085
1086 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
1087                                         WXHWND hwndAct,
1088                                         WXHWND hwndDeact)
1089 {
1090     wxMDIParentFrame * const parent = GetMDIParent();
1091
1092     WXHMENU hMenuToSet = 0;
1093
1094     bool activated;
1095
1096     if ( m_hWnd == hwndAct )
1097     {
1098         activated = true;
1099         parent->SetActiveChild(this);
1100
1101         WXHMENU hMenuChild = m_hMenu;
1102         if ( hMenuChild )
1103             hMenuToSet = hMenuChild;
1104     }
1105     else if ( m_hWnd == hwndDeact )
1106     {
1107         wxASSERT_MSG( parent->GetActiveChild() == this,
1108                       wxT("can't deactivate MDI child which wasn't active!") );
1109
1110         activated = false;
1111         parent->SetActiveChild(NULL);
1112
1113         WXHMENU hMenuParent = parent->m_hMenu;
1114
1115         // activate the the parent menu only when there is no other child
1116         // that has been activated
1117         if ( hMenuParent && !hwndAct )
1118             hMenuToSet = hMenuParent;
1119     }
1120     else
1121     {
1122         // we have nothing to do with it
1123         return false;
1124     }
1125
1126     if ( hMenuToSet )
1127     {
1128         MDISetMenu(parent->GetClientWindow(),
1129                    (HMENU)hMenuToSet, GetMDIWindowMenu(parent));
1130     }
1131
1132     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
1133     event.SetEventObject( this );
1134
1135     ResetWindowStyle(NULL);
1136
1137     return HandleWindowEvent(event);
1138 }
1139
1140 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
1141 {
1142     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1143
1144     if (!(lpPos->flags & SWP_NOSIZE))
1145     {
1146         RECT rectClient;
1147         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1148         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1149         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1150         {
1151             ::AdjustWindowRectEx(&rectClient, dwStyle, false, dwExStyle);
1152             lpPos->x = rectClient.left;
1153             lpPos->y = rectClient.top;
1154             lpPos->cx = rectClient.right - rectClient.left;
1155             lpPos->cy = rectClient.bottom - rectClient.top;
1156         }
1157     }
1158
1159     return false;
1160 }
1161
1162 bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo)
1163 {
1164     MINMAXINFO *info = (MINMAXINFO *)mmInfo;
1165
1166     // let the default window proc calculate the size of MDI children
1167     // frames because it is based on the size of the MDI client window,
1168     // not on the values specified in wxWindow m_max variables
1169     bool processed = MSWDefWindowProc(WM_GETMINMAXINFO, 0, (LPARAM)mmInfo) != 0;
1170
1171     int minWidth = GetMinWidth(),
1172         minHeight = GetMinHeight();
1173
1174     // but allow GetSizeHints() to set the min size
1175     if ( minWidth != wxDefaultCoord )
1176     {
1177         info->ptMinTrackSize.x = minWidth;
1178
1179         processed = true;
1180     }
1181
1182     if ( minHeight != wxDefaultCoord )
1183     {
1184         info->ptMinTrackSize.y = minHeight;
1185
1186         processed = true;
1187     }
1188
1189     return processed;
1190 }
1191
1192 // ---------------------------------------------------------------------------
1193 // MDI specific message translation/preprocessing
1194 // ---------------------------------------------------------------------------
1195
1196 WXLRESULT wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
1197 {
1198     return DefMDIChildProc(GetHwnd(),
1199                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1200 }
1201
1202 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1203 {
1204     // we must pass the parent frame to ::TranslateAccelerator(), otherwise it
1205     // doesn't do its job correctly for MDI child menus
1206     return MSWDoTranslateMessage(GetMDIParent(), msg);
1207 }
1208
1209 // ---------------------------------------------------------------------------
1210 // misc
1211 // ---------------------------------------------------------------------------
1212
1213 void wxMDIChildFrame::MSWDestroyWindow()
1214 {
1215     wxMDIParentFrame * const parent = GetMDIParent();
1216
1217     // Must make sure this handle is invalidated (set to NULL) since all sorts
1218     // of things could happen after the child client is destroyed, but before
1219     // the wxFrame is destroyed.
1220
1221     HWND oldHandle = (HWND)GetHWND();
1222     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1223                 (WPARAM)oldHandle, 0);
1224
1225     if (parent->GetActiveChild() == NULL)
1226         ResetWindowStyle(NULL);
1227
1228     if (m_hMenu)
1229     {
1230         ::DestroyMenu((HMENU) m_hMenu);
1231         m_hMenu = 0;
1232     }
1233     wxRemoveHandleAssociation(this);
1234     m_hWnd = 0;
1235 }
1236
1237 // Change the client window's extended style so we don't get a client edge
1238 // style when a child is maximised (a double border looks silly.)
1239 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1240 {
1241     RECT *rect = (RECT *)vrect;
1242     wxMDIParentFrame * const pFrameWnd = GetMDIParent();
1243     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1244
1245     if (!pChild || (pChild == this))
1246     {
1247         HWND hwndClient = GetWinHwnd(pFrameWnd->GetClientWindow());
1248         DWORD dwStyle = ::GetWindowLong(hwndClient, GWL_EXSTYLE);
1249
1250         // we want to test whether there is a maximized child, so just set
1251         // dwThisStyle to 0 if there is no child at all
1252         DWORD dwThisStyle = pChild
1253             ? ::GetWindowLong(GetWinHwnd(pChild), GWL_STYLE) : 0;
1254         DWORD dwNewStyle = dwStyle;
1255         if ( dwThisStyle & WS_MAXIMIZE )
1256             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1257         else
1258             dwNewStyle |= WS_EX_CLIENTEDGE;
1259
1260         if (dwStyle != dwNewStyle)
1261         {
1262             // force update of everything
1263             ::RedrawWindow(hwndClient, NULL, NULL,
1264                            RDW_INVALIDATE | RDW_ALLCHILDREN);
1265             ::SetWindowLong(hwndClient, GWL_EXSTYLE, dwNewStyle);
1266             ::SetWindowPos(hwndClient, NULL, 0, 0, 0, 0,
1267                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1268                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1269                            SWP_NOCOPYBITS);
1270             if (rect)
1271                 ::GetClientRect(hwndClient, rect);
1272
1273             return true;
1274         }
1275     }
1276
1277     return false;
1278 }
1279
1280 // ===========================================================================
1281 // wxMDIClientWindow: the window of predefined (by Windows) class which
1282 // contains the child frames
1283 // ===========================================================================
1284
1285 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1286 {
1287     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
1288
1289     CLIENTCREATESTRUCT ccs;
1290     m_windowStyle = style;
1291     m_parent = parent;
1292
1293     ccs.hWindowMenu = GetMDIWindowMenu(parent);
1294     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1295
1296     DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD |
1297                     WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
1298
1299     if ( style & wxHSCROLL )
1300         msStyle |= WS_HSCROLL;
1301     if ( style & wxVSCROLL )
1302         msStyle |= WS_VSCROLL;
1303
1304     DWORD exStyle = WS_EX_CLIENTEDGE;
1305
1306     wxWindowCreationHook hook(this);
1307     m_hWnd = (WXHWND)::CreateWindowEx
1308                        (
1309                         exStyle,
1310                         wxT("MDICLIENT"),
1311                         NULL,
1312                         msStyle,
1313                         0, 0, 0, 0,
1314                         GetWinHwnd(parent),
1315                         NULL,
1316                         wxGetInstance(),
1317                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1318     if ( !m_hWnd )
1319     {
1320         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1321
1322         return false;
1323     }
1324
1325     SubclassWin(m_hWnd);
1326
1327     return true;
1328 }
1329
1330 // Explicitly call default scroll behaviour
1331 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1332 {
1333     // Note: for client windows, the scroll position is not set in
1334     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1335     // scroll position we're at.
1336     // This makes it hard to paint patterns or bitmaps in the background,
1337     // and have the client area scrollable as well.
1338
1339     if ( event.GetOrientation() == wxHORIZONTAL )
1340         m_scrollX = event.GetPosition(); // Always returns zero!
1341     else
1342         m_scrollY = event.GetPosition(); // Always returns zero!
1343
1344     event.Skip();
1345 }
1346
1347 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1348 {
1349     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1350     // client area, you can end up with a non-refreshed portion in the client window
1351     // (see OGL studio sample). So check if the position is changed and if so,
1352     // redraw the MDI child frames.
1353
1354     const wxPoint oldPos = GetPosition();
1355
1356     wxWindow::DoSetSize(x, y, width, height, sizeFlags | wxSIZE_FORCE);
1357
1358     const wxPoint newPos = GetPosition();
1359
1360     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1361     {
1362         if (GetParent())
1363         {
1364             wxWindowList::compatibility_iterator node = GetParent()->GetChildren().GetFirst();
1365             while (node)
1366             {
1367                 wxWindow *child = node->GetData();
1368                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1369                 {
1370                    ::RedrawWindow(GetHwndOf(child),
1371                                   NULL,
1372                                   NULL,
1373                                   RDW_FRAME |
1374                                   RDW_ALLCHILDREN |
1375                                   RDW_INVALIDATE);
1376                 }
1377                 node = node->GetNext();
1378             }
1379         }
1380     }
1381 }
1382
1383 void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
1384 {
1385     // wxMSW prior to 2.5.3 created MDI child frames as visible, which resulted
1386     // in flicker e.g. when the frame contained controls with non-trivial
1387     // layout. Since 2.5.3, the frame is created hidden as all other top level
1388     // windows. In order to maintain backward compatibility, the frame is shown
1389     // in OnIdle, unless Show(false) was called by the programmer before.
1390     if ( m_needsInitialShow )
1391     {
1392         Show(true);
1393     }
1394
1395     // MDI child frames get their WM_SIZE when they're constructed but at this
1396     // moment they don't have any children yet so all child windows will be
1397     // positioned incorrectly when they are added later - to fix this, we
1398     // generate an artificial size event here
1399     if ( m_needsResize )
1400     {
1401         m_needsResize = false; // avoid any possibility of recursion
1402
1403         SendSizeEvent();
1404     }
1405
1406     event.Skip();
1407 }
1408
1409 // ---------------------------------------------------------------------------
1410 // private helper functions
1411 // ---------------------------------------------------------------------------
1412
1413 namespace
1414 {
1415
1416 void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1417 {
1418     if ( hmenuFrame || hmenuWindow )
1419     {
1420         if ( !::SendMessage(GetWinHwnd(win),
1421                             WM_MDISETMENU,
1422                             (WPARAM)hmenuFrame,
1423                             (LPARAM)hmenuWindow) )
1424         {
1425             DWORD err = ::GetLastError();
1426             if ( err )
1427             {
1428                 wxLogApiError(wxT("SendMessage(WM_MDISETMENU)"), err);
1429             }
1430         }
1431     }
1432
1433     // update menu bar of the parent window
1434     wxWindow *parent = win->GetParent();
1435     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1436
1437     ::SendMessage(GetWinHwnd(win), WM_MDIREFRESHMENU, 0, 0L);
1438
1439     ::DrawMenuBar(GetWinHwnd(parent));
1440 }
1441
1442 void MDIInsertWindowMenu(wxWindow *win, WXHMENU hMenu, HMENU menuWin)
1443 {
1444     HMENU hmenu = (HMENU)hMenu;
1445
1446     if ( menuWin )
1447     {
1448         // Try to insert Window menu in front of Help, otherwise append it.
1449         int N = GetMenuItemCount(hmenu);
1450         bool inserted = false;
1451         for ( int i = 0; i < N; i++ )
1452         {
1453             wxChar buf[256];
1454             if ( !::GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) )
1455             {
1456                 wxLogLastError(wxT("GetMenuString"));
1457
1458                 continue;
1459             }
1460
1461             const wxString label = wxStripMenuCodes(buf);
1462             if ( label == wxGetStockLabel(wxID_HELP, wxSTOCK_NOFLAGS) )
1463             {
1464                 inserted = true;
1465                 ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1466                              (UINT_PTR)menuWin,
1467                              wxString(wxGetTranslation(WINDOW_MENU_LABEL)).wx_str());
1468                 break;
1469             }
1470         }
1471
1472         if ( !inserted )
1473         {
1474             ::AppendMenu(hmenu, MF_POPUP,
1475                          (UINT_PTR)menuWin,
1476                          wxString(wxGetTranslation(WINDOW_MENU_LABEL)).wx_str());
1477         }
1478     }
1479
1480     MDISetMenu(win, hmenu, menuWin);
1481 }
1482
1483 void MDIRemoveWindowMenu(wxWindow *win, WXHMENU hMenu)
1484 {
1485     HMENU hmenu = (HMENU)hMenu;
1486
1487     if ( hmenu )
1488     {
1489         wxChar buf[1024];
1490
1491         int N = ::GetMenuItemCount(hmenu);
1492         for ( int i = 0; i < N; i++ )
1493         {
1494             if ( !::GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) )
1495             {
1496                 // Ignore successful read of menu string with length 0 which
1497                 // occurs, for example, for a maximized MDI child system menu
1498                 if ( ::GetLastError() != 0 )
1499                 {
1500                     wxLogLastError(wxT("GetMenuString"));
1501                 }
1502
1503                 continue;
1504             }
1505
1506             if ( wxStrcmp(buf, wxGetTranslation(WINDOW_MENU_LABEL)) == 0 )
1507             {
1508                 if ( !::RemoveMenu(hmenu, i, MF_BYPOSITION) )
1509                 {
1510                     wxLogLastError(wxT("RemoveMenu"));
1511                 }
1512
1513                 break;
1514             }
1515         }
1516     }
1517
1518     if ( win )
1519     {
1520         // we don't change the windows menu, but we update the main one
1521         MDISetMenu(win, hmenu, NULL);
1522     }
1523 }
1524
1525 void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1526                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1527 {
1528     *activate = true;
1529     *hwndAct = (WXHWND)lParam;
1530     *hwndDeact = (WXHWND)wParam;
1531 }
1532
1533 } // anonymous namespace
1534
1535 #endif // wxUSE_MDI && !defined(__WXUNIVERSAL__)