src/msw/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        mdi.cpp
   3 // Purpose:     MDI classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "mdi.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/setup.h"
  25 #include "wx/frame.h"
  26 #include "wx/menu.h"
  27 #include "wx/app.h"
  28 #include "wx/utils.h"
  29 #include "wx/dialog.h"
  30 #include "wx/statusbr.h"
  31 #include "wx/settings.h"
  32 #endif
  33
  34 #include "wx/mdi.h"
  35 #include "wx/msw/private.h"
  36
  37 #if USE_NATIVE_STATUSBAR
  38 #include <wx/msw/statbr95.h>
  39 #endif
  40
  41 #include <string.h>
  42
  43 extern wxList wxModelessWindows;
  44 extern wxMenu *wxCurrentPopupMenu;
  45
  46 #define IDM_WINDOWTILE  4001
  47 #define IDM_WINDOWCASCADE 4002
  48 #define IDM_WINDOWICONS 4003
  49 #define IDM_WINDOWNEXT 4004
  50 // This range gives a maximum of 500
  51 // MDI children. Should be enough :-)
  52 #define wxFIRST_MDI_CHILD 4100
  53 #define wxLAST_MDI_CHILD 4600
  54
  55 // Status border dimensions
  56 #define         wxTHICK_LINE_BORDER 3
  57 #define         wxTHICK_LINE_WIDTH  1
  58
  59 extern char wxMDIFrameClassName[];
  60 extern char wxMDIChildFrameClassName[];
  61 extern wxWindow *wxWndHook;
  62
  63 #if !USE_SHARED_LIBRARY
  64 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
  65 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
  66 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
  67
  68 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
  69   EVT_SIZE(wxMDIParentFrame::OnSize)
  70   EVT_ACTIVATE(wxMDIParentFrame::OnActivate)
  71   EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
  72 END_EVENT_TABLE()
  73
  74 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
  75   EVT_SCROLL(wxMDIClientWindow::OnScroll)
  76 END_EVENT_TABLE()
  77
  78 #endif
  79
  80 wxMDIParentFrame::wxMDIParentFrame(void)
  81 {
  82     m_clientWindow = NULL;
  83     m_currentChild = NULL;
  84     m_windowMenu = 0;
  85     m_parentFrameActive = TRUE;
  86 }
  87
  88 bool wxMDIParentFrame::Create(wxWindow *parent,
  89            wxWindowID id,
  90            const wxString& title,
  91            const wxPoint& pos,
  92            const wxSize& size,
  93            long style,
  94            const wxString& name)
  95 {
  96   m_defaultIcon = (WXHICON) (wxSTD_MDIPARENTFRAME_ICON ? wxSTD_MDIPARENTFRAME_ICON : wxDEFAULT_MDIPARENTFRAME_ICON);
  97
  98   m_clientWindow = NULL;
  99   m_currentChild = NULL;
 100   m_windowMenu = 0;
 101   m_parentFrameActive = TRUE;
 102
 103   if (!parent)
 104     wxTopLevelWindows.Append(this);
 105
 106   SetName(name);
 107   m_windowStyle = style;
 108
 109   if (parent) parent->AddChild(this);
 110
 111   if ( id > -1 )
 112     m_windowId = id;
 113   else
 114     m_windowId = (int)NewControlId();
 115
 116   int x = pos.x;
 117   int y = pos.y;
 118   int width = size.x;
 119   int height = size.y;
 120
 121   m_windowMenu = (WXHMENU) ::LoadMenu(wxGetInstance(), "wxWindowMenu");
 122
 123 #if WXDEBUG > 1
 124   wxDebugMsg("Loaded m_windowMenu %d\n", m_windowMenu);
 125 #endif
 126
 127   DWORD msflags = WS_OVERLAPPED ;
 128   if (style & wxMINIMIZE_BOX)
 129     msflags |= WS_MINIMIZEBOX;
 130   if (style & wxMAXIMIZE_BOX)
 131     msflags |= WS_MAXIMIZEBOX;
 132   if (style & wxTHICK_FRAME)
 133     msflags |= WS_THICKFRAME;
 134   if (style & wxSYSTEM_MENU)
 135     msflags |= WS_SYSMENU;
 136   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 137     msflags |= WS_MINIMIZE;
 138   if (style & wxMAXIMIZE)
 139     msflags |= WS_MAXIMIZE;
 140   if (style & wxCAPTION)
 141     msflags |= WS_CAPTION;
 142
 143   // Adding WS_CLIPCHILDREN causes children not to be properly
 144   // drawn when first displaying them.
 145 //  if (style & wxCLIP_CHILDREN)
 146 //    msflags |= WS_CLIPCHILDREN;
 147
 148   wxWindow::MSWCreate(m_windowId, parent, wxMDIFrameClassName, this, title, x, y, width, height,
 149          msflags);
 150
 151   wxModelessWindows.Append(this);
 152
 153   return TRUE;
 154 }
 155
 156 wxMDIParentFrame::~wxMDIParentFrame(void)
 157 {
 158   DestroyChildren();
 159
 160   DestroyMenu((HMENU) m_windowMenu); // Destroy dummy "Window" menu
 161   m_windowMenu = 0;
 162
 163   if (m_clientWindow->MSWGetOldWndProc())
 164         m_clientWindow->UnsubclassWin();
 165
 166   m_clientWindow->m_hWnd = 0;
 167   delete m_clientWindow;
 168 }
 169
 170 // Get size *available for subwindows* i.e. excluding menu bar.
 171 void wxMDIParentFrame::GetClientSize(int *x, int *y) const
 172 {
 173   RECT rect;
 174   GetClientRect((HWND) GetHWND(), &rect);
 175
 176   int cwidth = rect.right;
 177   int cheight = rect.bottom;
 178
 179   if ( GetStatusBar() )
 180   {
 181         int sw, sh;
 182         GetStatusBar()->GetSize(&sw, &sh);
 183         cheight -= sh;
 184   }
 185
 186   wxPoint pt(GetClientAreaOrigin());
 187   cheight -= pt.y;
 188   cwidth -= pt.x;
 189
 190   *x = cwidth;
 191   *y = cheight;
 192 }
 193
 194 void wxMDIParentFrame::SetMenuBar(wxMenuBar *menu_bar)
 195 {
 196   if (!menu_bar)
 197   {
 198     m_frameMenuBar = NULL;
 199     return;
 200   }
 201
 202   if (menu_bar->m_menuBarFrame)
 203          return;
 204
 205   int i;
 206   HMENU menu = CreateMenu();
 207
 208   for (i = 0; i < menu_bar->m_menuCount; i ++)
 209   {
 210     HMENU popup = (HMENU)menu_bar->m_menus[i]->m_hMenu;
 211     //
 212     // After looking Bounds Checker result, it seems that all
 213     // menus must be individually destroyed. So, don't reset m_hMenu,
 214     // to  allow ~wxMenu to do the job.
 215     //
 216     menu_bar->m_menus[i]->m_savehMenu = (WXHMENU) popup;
 217     // Uncommenting for the moment... JACS
 218     menu_bar->m_menus[i]->m_hMenu = (WXHMENU) NULL;
 219     AppendMenu(menu, MF_POPUP | MF_STRING, (UINT)popup, menu_bar->m_titles[i]);
 220   }
 221
 222   menu_bar->m_hMenu = (WXHMENU)menu;
 223   if (m_frameMenuBar)
 224     delete m_frameMenuBar;
 225
 226   this->m_hMenu = (WXHMENU) menu;
 227
 228   // MDI parent-specific code follows
 229
 230   HMENU subMenu = GetSubMenu((HMENU) m_windowMenu, 0);
 231
 232   // Try to insert Window menu in front of Help, otherwise append it.
 233   int N = GetMenuItemCount(menu);
 234   bool success = FALSE;
 235   for (i = 0; i < N; i++)
 236   {
 237         char buf[100];
 238         int chars = GetMenuString(menu, i, buf, 100, MF_BYPOSITION);
 239         if ((chars > 0) && (strcmp(buf, "&Help") == 0 ||
 240                             strcmp(buf, "Help") == 0))
 241         {
 242            success = TRUE;
 243            InsertMenu(menu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
 244                       (UINT)subMenu, "&Window");
 245            break;
 246         }
 247   }
 248   if (!success)
 249     AppendMenu(menu, MF_POPUP,
 250                          (UINT)subMenu,
 251                          "&Window");
 252   m_parentFrameActive = TRUE;
 253 #ifdef __WIN32__
 254   SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDISETMENU,
 255                 (WPARAM)menu,
 256                   (LPARAM)subMenu);
 257 #else
 258   SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
 259               MAKELPARAM(menu, subMenu));
 260 #endif
 261   DrawMenuBar((HWND) GetHWND());
 262
 263   m_frameMenuBar = menu_bar;
 264   menu_bar->m_menuBarFrame = this;
 265 }
 266
 267 void wxMDIParentFrame::OnSize(wxSizeEvent& event)
 268 {
 269 #if USE_CONSTRAINTS
 270     if (GetAutoLayout())
 271       Layout();
 272 #endif
 273     int x = 0;
 274     int y = 0;
 275     int width, height;
 276     GetClientSize(&width, &height);
 277
 278     if ( GetClientWindow() )
 279         GetClientWindow()->SetSize(x, y, width, height);
 280
 281 /* Already done in MSWOnSize
 282   // forward WM_SIZE to status bar control
 283 #if USE_NATIVE_STATUSBAR
 284   if (m_frameStatusBar && m_frameStatusBar->IsKindOf(CLASSINFO(wxStatusBar95)))
 285     ((wxStatusBar95 *)m_frameStatusBar)->OnSize(event);
 286 #endif
 287 */
 288
 289 }
 290
 291 void wxMDIParentFrame::OnActivate(wxActivateEvent& event)
 292 {
 293         // Do nothing
 294 }
 295
 296 #if WXWIN_COMPATIBILITY
 297 /*
 298 void wxMDIParentFrame::OldOnSize(int x, int y)
 299 {
 300 #if WXWIN_COMPATIBILITY == 1
 301   wxSizeEvent event(wxSize(x, y), m_windowId);
 302   event.SetEventObject( this );
 303   GetEventHandler()->ProcessEvent(event);
 304 #else
 305
 306 #if USE_CONSTRAINTS
 307   if (GetAutoLayout())
 308     Layout();
 309 #endif
 310   int x = 0;
 311   int y = 0;
 312   int width, height;
 313   GetClientSize(&width, &height);
 314   if ( GetToolBar() )
 315   {
 316       int wt, ht;
 317       GetToolBar()->GetSize(&wt, &ht);
 318       height -= ht;
 319       y += ht;
 320   }
 321
 322   if ( GetClientWindow() )
 323       GetClientWindow()->SetSize(x, y, width, height);
 324
 325 #endif
 326 }
 327
 328 // Default activation behaviour - nothing.
 329 // Default activation behaviour - override dedault wxFrame behaviour
 330 void wxMDIParentFrame::OldOnActivate(bool flag)
 331 {
 332 #if WXWIN_COMPATIBILITY == 1
 333   wxActivateEvent event(wxEVT_ACTIVATE, flag, m_windowId);
 334   event.SetEventObject( this );
 335   GetEventHandler()->ProcessEvent(event);
 336 #else
 337 #endif
 338 }
 339 */
 340
 341 #endif
 342
 343 // Returns the active MDI child window
 344 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild(void) const
 345 {
 346 //  HWND hWnd = (HWND)LOWORD(SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDIGETACTIVE, 0, 0L));
 347   HWND hWnd = (HWND)SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDIGETACTIVE, 0, 0L);
 348   if (hWnd == 0)
 349     return NULL;
 350   else
 351     return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 352 }
 353
 354 // Create the client window class (don't Create the window,
 355 // just return a new class)
 356 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient(void)
 357 {
 358         return new wxMDIClientWindow ;
 359 }
 360
 361 // Responds to colour changes, and passes event on to children.
 362 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 363 {
 364     if ( m_clientWindow )
 365     {
 366         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
 367         m_clientWindow->Refresh();
 368     }
 369 /*
 370     if ( m_frameToolBar )
 371     {
 372         wxSysColourChangedEvent event2;
 373         event2.eventObject = m_frameToolBar;
 374         m_frameToolBar->GetEventHandler()->ProcessEvent(event2);
 375     }
 376 */
 377
 378     // Propagate the event to the non-top-level children
 379     wxFrame::OnSysColourChanged(event);
 380 }
 381
 382 // MDI operations
 383 void wxMDIParentFrame::Cascade(void)
 384 {
 385     ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDICASCADE, 0, 0);
 386 }
 387
 388 void wxMDIParentFrame::Tile(void)
 389 {
 390     ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDITILE, MDITILE_HORIZONTAL, 0);
 391 }
 392
 393 void wxMDIParentFrame::ArrangeIcons(void)
 394 {
 395     ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDIICONARRANGE, 0, 0);
 396 }
 397
 398 void wxMDIParentFrame::ActivateNext(void)
 399 {
 400     ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDINEXT, 0, 0);
 401 }
 402
 403 void wxMDIParentFrame::ActivatePrevious(void)
 404 {
 405     ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDINEXT, 0, 1);
 406 }
 407
 408
 409 /*
 410 // Returns a style for the client window - usually 0
 411 // or, for example, wxHSCROLL | wxVSCROLL
 412 long wxMDIParentFrame::GetClientStyle(void) const
 413 {
 414         return wxHSCROLL | wxVSCROLL ;
 415 }
 416 */
 417
 418 bool wxMDIParentFrame::MSWOnDestroy(void)
 419 {
 420   return FALSE;
 421 }
 422
 423 void wxMDIParentFrame::MSWOnCreate(WXLPCREATESTRUCT WXUNUSED(cs))
 424 {
 425         m_clientWindow = OnCreateClient();
 426         // Uses own style for client style
 427         m_clientWindow->CreateClient(this, GetWindowStyleFlag());
 428 }
 429
 430 void wxMDIParentFrame::MSWOnSize(int x, int y, WXUINT id)
 431 {
 432   switch (id)
 433   {
 434     case SIZEFULLSCREEN:
 435     case SIZENORMAL:
 436       m_iconized = FALSE;
 437     break;
 438     case SIZEICONIC:
 439       m_iconized = TRUE;
 440     break;
 441   }
 442
 443  if (!m_iconized)
 444  {
 445   // forward WM_SIZE to status bar control
 446 #if USE_NATIVE_STATUSBAR
 447   if (m_frameStatusBar && m_frameStatusBar->IsKindOf(CLASSINFO(wxStatusBar95)))
 448   {
 449     wxSizeEvent event(wxSize(x, y), m_frameStatusBar->GetId());
 450     event.SetEventObject( m_frameStatusBar );
 451
 452     ((wxStatusBar95 *)m_frameStatusBar)->OnSize(event);
 453   }
 454 #endif
 455
 456         PositionStatusBar();
 457     PositionToolBar();
 458
 459     wxSizeEvent event(wxSize(x, y), m_windowId);
 460     event.SetEventObject( this );
 461     if (!GetEventHandler()->ProcessEvent(event))
 462         Default();
 463   }
 464 }
 465
 466 bool wxMDIParentFrame::MSWOnActivate(int state, bool minimized, WXHWND activate)
 467 {
 468         wxWindow::MSWOnActivate(state, minimized, activate);
 469
 470     // If this window is an MDI parent, we must also send an OnActivate message
 471     // to the current child.
 472     if ((m_currentChild != NULL) && ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)))
 473         {
 474         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_currentChild->GetId());
 475         event.SetEventObject( m_currentChild );
 476         m_currentChild->GetEventHandler()->ProcessEvent(event);
 477     }
 478     return 0;
 479 }
 480
 481 bool wxMDIParentFrame::MSWOnCommand(WXWORD id, WXWORD cmd, WXHWND control)
 482 {
 483 //  if (cmd == 0) // Why did I do this test?
 484   {
 485     // In case it's e.g. a toolbar.
 486     wxWindow *win = wxFindWinFromHandle(control);
 487     if (win)
 488       return win->MSWCommand(cmd, id);
 489
 490     if (wxCurrentPopupMenu)
 491     {
 492         wxMenu *popupMenu = wxCurrentPopupMenu;
 493         wxCurrentPopupMenu = NULL;
 494         if (!popupMenu->MSWCommand(cmd, id))
 495             return TRUE;
 496     }
 497
 498     switch (id)
 499     {
 500       case IDM_WINDOWCASCADE:
 501         SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDICASCADE, MDITILE_SKIPDISABLED, 0);
 502         return TRUE;
 503       case IDM_WINDOWTILE:
 504         SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDITILE, MDITILE_HORIZONTAL, 0);
 505         return TRUE;
 506       case IDM_WINDOWICONS:
 507         SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDIICONARRANGE, 0, 0);
 508         return TRUE;
 509       case IDM_WINDOWNEXT:
 510         SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDINEXT, 0, 0);
 511         return TRUE;
 512       default:
 513         break;
 514      }
 515     if (id >= 0xF000)
 516     {
 517 #if WXDEBUG > 1
 518       wxDebugMsg("wxMDIFrame::OnCommand %d: system command: calling default window proc\n", GetHWND());
 519 #endif
 520       return FALSE; // Get WndProc to call default proc
 521     }
 522
 523     if (m_parentFrameActive && (id < wxFIRST_MDI_CHILD || id > wxLAST_MDI_CHILD))
 524     {
 525       ProcessCommand(id);
 526       return TRUE;
 527     }
 528     else if (m_currentChild && (id < wxFIRST_MDI_CHILD || id > wxLAST_MDI_CHILD))
 529     {
 530 #if WXDEBUG > 1
 531       wxDebugMsg("wxMDIFrame::MSWOnCommand %d: calling child OnCommand\n", GetHWND());
 532 #endif
 533       return m_currentChild->MSWOnCommand(id, cmd, control);
 534     }
 535   }
 536   if (id >= wxFIRST_MDI_CHILD && id <= wxLAST_MDI_CHILD)
 537   {
 538     wxNode* node = GetChildren()->First();
 539     while (node)
 540     {
 541         wxWindow* child = (wxWindow*) node->Data();
 542         if (child->GetHWND())
 543         {
 544 #ifdef __WIN32__
 545             long childId = GetWindowLong((HWND) child->GetHWND(), GWL_ID);
 546 #else
 547             long childId = GetWindowWord((HWND) child->GetHWND(), GWW_ID);
 548 #endif
 549             if (childId == id)
 550             {
 551                 ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDIACTIVATE, (WPARAM) (HWND) child->GetHWND(), 0);
 552                 return TRUE;
 553             }
 554         }
 555         node = node->Next();
 556     }
 557 /*
 558     wxWindow* child = FindItem(id);
 559     if (child)
 560     {
 561         ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDIACTIVATE, (WPARAM) (HWND) child->GetHWND(), 0);
 562         return TRUE;
 563     }
 564 */
 565   }
 566
 567   return FALSE;
 568 }
 569
 570 void wxMDIParentFrame::MSWOnMenuHighlight(WXWORD nItem, WXWORD nFlags, WXHMENU hSysMenu)
 571 {
 572   if (m_parentFrameActive)
 573   {
 574     if (nFlags == 0xFFFF && hSysMenu == (WXHMENU) NULL)
 575     {
 576         wxMenuEvent event(wxEVT_MENU_HIGHLIGHT, -1);
 577         event.SetEventObject( this );
 578         GetEventHandler()->ProcessEvent(event);
 579     }
 580     else if (nFlags != MF_SEPARATOR)
 581     {
 582         wxMenuEvent event(wxEVT_MENU_HIGHLIGHT, nItem);
 583         event.SetEventObject( this );
 584         GetEventHandler()->ProcessEvent(event);
 585     }
 586   }
 587   else if (m_currentChild)
 588   {
 589     m_currentChild->MSWOnMenuHighlight(nItem, nFlags, hSysMenu);
 590   }
 591 }
 592
 593 long wxMDIParentFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 594 {
 595         WXHWND clientWnd;
 596         if ( GetClientWindow() )
 597             clientWnd = GetClientWindow()->GetHWND();
 598         else
 599                 clientWnd = 0;
 600
 601   return DefFrameProc((HWND) GetHWND(), (HWND) clientWnd, message, wParam, lParam);
 602 }
 603
 604 bool wxMDIParentFrame::MSWProcessMessage(WXMSG* msg)
 605 {
 606   MSG *pMsg = (MSG *)msg;
 607
 608   if ((m_currentChild != (wxWindow *)NULL) && (m_currentChild->GetHWND() != (WXHWND) NULL) && m_currentChild->MSWProcessMessage(msg))
 609      return TRUE;
 610
 611   return FALSE;
 612 }
 613
 614 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 615 {
 616   MSG *pMsg = (MSG *)msg;
 617
 618   if ((m_currentChild != (wxWindow *)NULL) && (m_currentChild->GetHWND() != (WXHWND) NULL) && m_currentChild->MSWTranslateMessage(msg))
 619      return TRUE;
 620
 621   if (m_acceleratorTable.Ok() &&
 622           ::TranslateAccelerator((HWND) GetHWND(), (HACCEL) m_acceleratorTable.GetHACCEL(), pMsg))
 623     return TRUE;
 624
 625   if (pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN)
 626   {
 627     if (::TranslateMDISysAccel((HWND) GetClientWindow()->GetHWND(), pMsg))
 628       return TRUE;
 629   }
 630
 631   return FALSE;
 632 }
 633
 634
 635 bool wxMDIParentFrame::MSWOnEraseBkgnd(WXHDC WXUNUSED(pDC))
 636 {
 637   return TRUE;
 638 }
 639
 640 extern wxWindow *wxWndHook;
 641 extern wxList *wxWinHandleList;
 642
 643 wxMDIChildFrame::wxMDIChildFrame(void)
 644 {
 645 //      m_active = FALSE;
 646 }
 647
 648 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 649            wxWindowID id,
 650            const wxString& title,
 651            const wxPoint& pos,
 652            const wxSize& size,
 653            long style,
 654            const wxString& name)
 655 {
 656   m_defaultIcon = (WXHICON) (wxSTD_MDICHILDFRAME_ICON ? wxSTD_MDICHILDFRAME_ICON : wxDEFAULT_MDICHILDFRAME_ICON);
 657
 658   SetName(name);
 659
 660   if ( id > -1 )
 661     m_windowId = id;
 662   else
 663     m_windowId = (int)NewControlId();
 664
 665   if (parent) parent->AddChild(this);
 666
 667   wxWndHook = this;
 668
 669   int x = pos.x;
 670   int y = pos.y;
 671   int width = size.x;
 672   int height = size.y;
 673
 674   MDICREATESTRUCT mcs;
 675
 676   mcs.szClass = wxMDIChildFrameClassName;
 677   mcs.szTitle = title;
 678   mcs.hOwner = wxGetInstance();
 679   if (x > -1) mcs.x = x;
 680   else mcs.x = CW_USEDEFAULT;
 681
 682   if (y > -1) mcs.y = y;
 683   else mcs.y = CW_USEDEFAULT;
 684
 685   if (width > -1) mcs.cx = width;
 686   else mcs.cx = CW_USEDEFAULT;
 687
 688   if (height > -1) mcs.cy = height;
 689   else mcs.cy = CW_USEDEFAULT;
 690
 691   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN ;
 692   if (style & wxMINIMIZE_BOX)
 693     msflags |= WS_MINIMIZEBOX;
 694   if (style & wxMAXIMIZE_BOX)
 695     msflags |= WS_MAXIMIZEBOX;
 696   if (style & wxTHICK_FRAME)
 697     msflags |= WS_THICKFRAME;
 698   if (style & wxSYSTEM_MENU)
 699     msflags |= WS_SYSMENU;
 700   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 701     msflags |= WS_MINIMIZE;
 702   if (style & wxMAXIMIZE)
 703     msflags |= WS_MAXIMIZE;
 704   if (style & wxCAPTION)
 705     msflags |= WS_CAPTION;
 706
 707   mcs.style = msflags;
 708
 709   mcs.lParam = 0;
 710
 711   DWORD Return = SendMessage((HWND) parent->GetClientWindow()->GetHWND(),
 712                 WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 713
 714   //handle = (HWND)LOWORD(Return);
 715   // Must be the DWORRD for WIN32. And in 16 bits, HIWORD=0 (says Microsoft)
 716   m_hWnd = (WXHWND)Return;
 717
 718   // This gets reassigned so can't be stored
 719 //  m_windowId = GetWindowLong((HWND) m_hWnd, GWL_ID);
 720
 721   wxWndHook = NULL;
 722   wxWinHandleList->Append((long)GetHWND(), this);
 723
 724   SetWindowLong((HWND) GetHWND(), 0, (long)this);
 725
 726   wxModelessWindows.Append(this);
 727   return TRUE;
 728 }
 729
 730 wxMDIChildFrame::~wxMDIChildFrame(void)
 731 {
 732         MSWDestroyWindow();
 733
 734     ResetWindowStyle(NULL);
 735 }
 736
 737 // Set the client size (i.e. leave the calculation of borders etc.
 738 // to wxWindows)
 739 void wxMDIChildFrame::SetClientSize(int width, int height)
 740 {
 741   HWND hWnd = (HWND) GetHWND();
 742
 743   RECT rect;
 744   GetClientRect(hWnd, &rect);
 745
 746   RECT rect2;
 747   GetWindowRect(hWnd, &rect2);
 748
 749   // Find the difference between the entire window (title bar and all)
 750   // and the client area; add this to the new client size to move the
 751   // window
 752   int actual_width = rect2.right - rect2.left - rect.right + width;
 753   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 754
 755   if (GetStatusBar())
 756   {
 757         int sx, sy;
 758         GetStatusBar()->GetSize(&sx, &sy);
 759     actual_height += sy;
 760   }
 761
 762   POINT point;
 763   point.x = rect2.left;
 764   point.y = rect2.top;
 765
 766   // If there's an MDI parent, must subtract the parent's top left corner
 767   // since MoveWindow moves relative to the parent
 768   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 769   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 770
 771   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
 772
 773   wxSizeEvent event(wxSize(width, height), m_windowId);
 774   event.SetEventObject( this );
 775   GetEventHandler()->ProcessEvent(event);
 776 }
 777
 778 void wxMDIChildFrame::GetPosition(int *x, int *y) const
 779 {
 780   RECT rect;
 781   GetWindowRect((HWND) GetHWND(), &rect);
 782   POINT point;
 783   point.x = rect.left;
 784   point.y = rect.top;
 785
 786   // Since we now have the absolute screen coords,
 787   // if there's a parent we must subtract its top left corner
 788   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 789   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 790
 791   *x = point.x;
 792   *y = point.y;
 793 }
 794
 795 void wxMDIChildFrame::SetMenuBar(wxMenuBar *menu_bar)
 796 {
 797   if (!menu_bar)
 798   {
 799     m_frameMenuBar = NULL;
 800     return;
 801   }
 802
 803   if (menu_bar->m_menuBarFrame)
 804          return;
 805
 806   int i;
 807   HMENU menu = CreateMenu();
 808
 809   for (i = 0; i < menu_bar->m_menuCount; i ++)
 810   {
 811     HMENU popup = (HMENU)menu_bar->m_menus[i]->m_hMenu;
 812     //
 813     // After looking Bounds Checker result, it seems that all
 814     // menus must be individually destroyed. So, don't reset m_hMenu,
 815     // to  allow ~wxMenu to do the job.
 816     //
 817     menu_bar->m_menus[i]->m_savehMenu = (WXHMENU) popup;
 818     // Uncommenting for the moment... JACS
 819     menu_bar->m_menus[i]->m_hMenu = 0;
 820     ::AppendMenu((HMENU) menu, MF_POPUP | MF_STRING, (UINT)popup, menu_bar->m_titles[i]);
 821   }
 822
 823   menu_bar->m_hMenu = (WXHMENU)menu;
 824   if (m_frameMenuBar)
 825     delete m_frameMenuBar;
 826
 827   this->m_hMenu = (WXHMENU) menu;
 828
 829    wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 830
 831    parent->m_parentFrameActive = FALSE;
 832    HMENU subMenu = GetSubMenu((HMENU) parent->GetWindowMenu(), 0);
 833
 834    // Try to insert Window menu in front of Help, otherwise append it.
 835    int N = GetMenuItemCount(menu);
 836    bool success = FALSE;
 837    for (i = 0; i < N; i++)
 838    {
 839         char buf[100];
 840         int chars = GetMenuString(menu, i, buf, 100, MF_BYPOSITION);
 841         if ((chars > 0) && (strcmp(buf, "&Help") == 0 ||
 842                             strcmp(buf, "Help") == 0))
 843         {
 844            success = TRUE;
 845            InsertMenu(menu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
 846                       (UINT)subMenu, "&Window");
 847            break;
 848         }
 849       }
 850   if (!success)
 851     AppendMenu(menu, MF_POPUP,
 852                          (UINT)subMenu,
 853                          "&Window");
 854 #ifdef __WIN32__
 855   SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU,
 856                   (WPARAM)menu,
 857                   (LPARAM)subMenu);
 858 #else
 859   SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
 860                   MAKELPARAM(menu, subMenu));
 861 #endif
 862
 863   DrawMenuBar((HWND) parent->GetHWND());
 864   m_frameMenuBar = menu_bar;
 865   menu_bar->m_menuBarFrame = this;
 866 }
 867
 868 // MDI operations
 869 void wxMDIChildFrame::Maximize(void)
 870 {
 871     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 872     if ( parent && parent->GetClientWindow() )
 873         ::SendMessage( (HWND) parent->GetClientWindow()->GetHWND(), WM_MDIMAXIMIZE, (WPARAM) (HWND) GetHWND(), 0);
 874 }
 875
 876 void wxMDIChildFrame::Restore(void)
 877 {
 878     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 879     if ( parent && parent->GetClientWindow() )
 880         ::SendMessage( (HWND) parent->GetClientWindow()->GetHWND(), WM_MDIRESTORE, (WPARAM) (HWND) GetHWND(), 0);
 881 }
 882
 883 void wxMDIChildFrame::Activate(void)
 884 {
 885     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 886     if ( parent && parent->GetClientWindow() )
 887         ::SendMessage( (HWND) parent->GetClientWindow()->GetHWND(), WM_MDIACTIVATE, (WPARAM) (HWND) GetHWND(), 0);
 888 }
 889
 890 static HWND invalidHandle = 0;
 891 void wxMDIChildFrame::MSWOnSize(int x, int y, WXUINT id)
 892 {
 893   if (!GetHWND()) return;
 894
 895   if (invalidHandle == (HWND) GetHWND())
 896   {
 897 #if WXDEBUG > 1
 898   wxDebugMsg("wxMDIChildFrame::OnSize %d: invalid, so returning.\n", GetHWND());
 899 #endif
 900     return;
 901   }
 902
 903   (void)MSWDefWindowProc(m_lastMsg, m_lastWParam, m_lastLParam);
 904
 905   switch (id)
 906   {
 907     case SIZEFULLSCREEN:
 908     case SIZENORMAL:
 909       m_iconized = FALSE;
 910     break;
 911     case SIZEICONIC:
 912       m_iconized = TRUE;
 913     break;
 914   }
 915
 916   if (!m_iconized)
 917   {
 918     // forward WM_SIZE to status bar control
 919 #if USE_NATIVE_STATUSBAR
 920     if (m_frameStatusBar && m_frameStatusBar->IsKindOf(CLASSINFO(wxStatusBar95)))
 921     {
 922       wxSizeEvent event(wxSize(x, y), m_frameStatusBar->GetId());
 923       event.SetEventObject( m_frameStatusBar );
 924
 925       ((wxStatusBar95 *)m_frameStatusBar)->OnSize(event);
 926     }
 927 #endif
 928
 929     PositionStatusBar();
 930     PositionToolBar();
 931
 932     wxWindow::MSWOnSize(x, y, id);
 933   }
 934 }
 935
 936 bool wxMDIChildFrame::MSWOnCommand(WXWORD id, WXWORD cmd, WXHWND control)
 937 {
 938 #if WXDEBUG > 1
 939   wxDebugMsg("wxMDIChildFrame::MSWOnCommand %d\n", GetHWND());
 940 #endif
 941 //  if ((cmd == 0) && GetHWND())
 942   if (GetHWND())
 943   {
 944     // In case it's e.g. a toolbar.
 945     wxWindow *win = wxFindWinFromHandle(control);
 946     if (win)
 947       return win->MSWCommand(cmd, id);
 948
 949     if (wxCurrentPopupMenu)
 950     {
 951         wxMenu *popupMenu = wxCurrentPopupMenu;
 952         wxCurrentPopupMenu = NULL;
 953         if (popupMenu->MSWCommand(cmd, id))
 954             return TRUE;
 955     }
 956
 957     if (GetMenuBar() && GetMenuBar()->FindItemForId(id))
 958     {
 959       ProcessCommand(id);
 960       return TRUE;
 961     }
 962     else
 963       return FALSE;
 964     return TRUE;
 965   }
 966   else
 967     return FALSE;
 968 }
 969
 970 long wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXUINT wParam, WXLPARAM lParam)
 971 {
 972   if (GetHWND())
 973     return DefMDIChildProc((HWND) GetHWND(), (UINT) message, (WPARAM) wParam, (LPARAM) lParam);
 974   else return 0;
 975 }
 976
 977 bool wxMDIChildFrame::MSWProcessMessage(WXMSG *msg)
 978 {
 979   return FALSE;
 980 }
 981
 982 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
 983 {
 984   MSG *pMsg = (MSG *)msg;
 985   if (m_acceleratorTable.Ok())
 986   {
 987     wxFrame *parent = (wxFrame *)GetParent();
 988     HWND parent_hwnd = (HWND) parent->GetHWND();
 989     return (::TranslateAccelerator(parent_hwnd, (HACCEL) m_acceleratorTable.GetHACCEL(), pMsg) != 0);
 990   }
 991
 992   return FALSE;
 993 }
 994
 995 long wxMDIChildFrame::MSWOnMDIActivate(long activate, WXHWND WXUNUSED(one), WXHWND WXUNUSED(two))
 996 {
 997   wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 998   HMENU parent_menu = (HMENU) parent->GetWinMenu();
 999 #if WXDEBUG > 1
1000   wxDebugMsg("Parent menu is %d\n", parent_menu);
1001 #endif
1002   HMENU child_menu = (HMENU) GetWinMenu();
1003 #if WXDEBUG > 1
1004   wxDebugMsg("Child menu is %d\n", child_menu);
1005 #endif
1006
1007   if (activate)
1008   {
1009 //    m_active = TRUE;
1010     parent->m_currentChild = this;
1011     if (child_menu)
1012     {
1013       parent->m_parentFrameActive = FALSE;
1014       HMENU subMenu = GetSubMenu((HMENU) parent->GetWindowMenu(), 0);
1015 #if WXDEBUG > 1
1016       wxDebugMsg("Window submenu is %d\n", subMenu);
1017 #endif
1018 //      HMENU subMenu = 0;
1019 #ifdef __WIN32__
1020       ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU,
1021                     (WPARAM)child_menu,
1022                     (LPARAM)subMenu);
1023 #else
1024       ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
1025                   MAKELONG(child_menu, subMenu));
1026 #endif
1027
1028       ::DrawMenuBar((HWND) parent->GetHWND());
1029     }
1030     wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId);
1031     event.SetEventObject( this );
1032     GetEventHandler()->ProcessEvent(event);
1033   }
1034   else
1035   {
1036     if (parent->m_currentChild == this)
1037       parent->m_currentChild = NULL;
1038
1039     wxActivateEvent event(wxEVT_ACTIVATE, FALSE, m_windowId);
1040     event.SetEventObject( this );
1041     GetEventHandler()->ProcessEvent(event);
1042
1043 //    m_active = FALSE;
1044     if (parent_menu)
1045     {
1046       parent->m_parentFrameActive = TRUE;
1047       HMENU subMenu = GetSubMenu((HMENU) parent->GetWindowMenu(), 0);
1048 #if WXDEBUG > 1
1049       wxDebugMsg("Window submenu is %d\n", subMenu);
1050 #endif
1051 //      HMENU subMenu = 0;
1052 #ifdef __WIN32__
1053       ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU,
1054                     (WPARAM)parent_menu,
1055                     (LPARAM)subMenu);
1056 #else
1057       ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
1058                   MAKELONG(parent_menu, subMenu));
1059 #endif
1060
1061       ::DrawMenuBar((HWND) parent->GetHWND());
1062     }
1063   }
1064   bool flag = (activate != 0);
1065   wxActivateEvent event(wxEVT_ACTIVATE, flag, m_windowId);
1066   event.SetEventObject( this );
1067   GetEventHandler()->ProcessEvent(event);
1068
1069 #if WXDEBUG > 1
1070   wxDebugMsg("Finished (de)activating\n");
1071 #endif
1072   return 0;
1073 }
1074
1075 void wxMDIChildFrame::MSWDestroyWindow(void)
1076 {
1077   MSWDetachWindowMenu();
1078   invalidHandle = (HWND) GetHWND();
1079
1080   wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1081
1082   // Must make sure this handle is invalidated (set to NULL)
1083   // since all sorts of things could happen after the
1084   // child client is destroyed, but before the wxFrame is
1085   // destroyed.
1086
1087   HWND oldHandle = (HWND)GetHWND();
1088 #if WXDEBUG > 1
1089   wxDebugMsg("*** About to DestroyWindow MDI child %d\n", oldHandle);
1090 #endif
1091 #ifdef __WIN32__
1092   SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDIDESTROY, (WPARAM)oldHandle, (LPARAM)0);
1093 #else
1094   SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDIDESTROY, (HWND)oldHandle, 0);
1095 #endif
1096 #if WXDEBUG > 1
1097   wxDebugMsg("*** Finished DestroyWindow MDI child %d\n", oldHandle);
1098 #endif
1099   invalidHandle = 0;
1100
1101   if (m_hMenu)
1102   {
1103     ::DestroyMenu((HMENU) m_hMenu);
1104     m_hMenu = 0;
1105   }
1106   m_hWnd = 0;
1107 }
1108
1109 // Change the client window's extended style so we don't
1110 // get a client edge style when a child is maximised (a double
1111 // border looks silly.)
1112 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1113 {
1114 #if defined(__WIN95__)
1115     RECT *rect = (RECT *)vrect;
1116         wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1117         wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1118         if (!pChild || (pChild == this))
1119         {
1120                 DWORD dwStyle = ::GetWindowLong((HWND) pFrameWnd->GetClientWindow()->GetHWND(), GWL_EXSTYLE);
1121         DWORD dwThisStyle = ::GetWindowLong((HWND) GetHWND(), GWL_STYLE);
1122                 DWORD dwNewStyle = dwStyle;
1123                 if (pChild != NULL && (dwThisStyle & WS_MAXIMIZE))
1124                         dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1125                 else
1126                         dwNewStyle |= WS_EX_CLIENTEDGE;
1127
1128                 if (dwStyle != dwNewStyle)
1129                 {
1130                         ::RedrawWindow((HWND) pFrameWnd->GetClientWindow()->GetHWND(), NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN);
1131                         ::SetWindowLong((HWND) pFrameWnd->GetClientWindow()->GetHWND(), GWL_EXSTYLE, dwNewStyle);
1132                         ::SetWindowPos((HWND) pFrameWnd->GetClientWindow()->GetHWND(), NULL, 0, 0, 0, 0,
1133                                 SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOCOPYBITS);
1134                         if (rect)
1135                                 ::GetClientRect((HWND) pFrameWnd->GetClientWindow()->GetHWND(), rect);
1136                         return TRUE;
1137                 }
1138         }
1139         return FALSE;
1140 #else
1141     return FALSE;
1142 #endif
1143 }
1144
1145 void wxMDIChildFrame::MSWOnWindowPosChanging(void *pos)
1146 {
1147     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1148 #if defined(__WIN95__)
1149     if (!(lpPos->flags & SWP_NOSIZE))
1150         {
1151                 RECT rectClient;
1152                 DWORD dwExStyle = ::GetWindowLong((HWND) GetHWND(), GWL_EXSTYLE);
1153         DWORD dwStyle = ::GetWindowLong((HWND) GetHWND(), GWL_STYLE);
1154                 if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1155                 {
1156                         ::AdjustWindowRectEx(&rectClient, dwStyle, FALSE, dwExStyle);
1157                         lpPos->x = rectClient.left;
1158             lpPos->y = rectClient.top;
1159                         lpPos->cx = rectClient.right - rectClient.left;
1160             lpPos->cy = rectClient.bottom - rectClient.top;
1161                 }
1162             wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1163         if (pFrameWnd && pFrameWnd->GetToolBar())
1164         {
1165             pFrameWnd->GetToolBar()->Refresh();
1166         }
1167         }
1168 #endif
1169     Default();
1170 }
1171
1172 // Client window
1173 wxMDIClientWindow::wxMDIClientWindow(void)
1174 {
1175     m_scrollX = 0;
1176     m_scrollY = 0;
1177 }
1178
1179 wxMDIClientWindow::~wxMDIClientWindow(void)
1180 {
1181 }
1182
1183 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1184 {
1185   m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE);
1186
1187   CLIENTCREATESTRUCT ccs;
1188   m_windowStyle = style;
1189   m_windowParent = parent;
1190
1191   ccs.hWindowMenu = (HMENU) parent->GetWindowMenu();
1192   ccs.idFirstChild = wxFIRST_MDI_CHILD;
1193
1194   DWORD msStyle = WS_VISIBLE | WS_CHILD | WS_CLIPCHILDREN ;
1195   if ( parent->GetWindowStyleFlag() & wxHSCROLL )
1196         msStyle |= WS_HSCROLL;
1197   if ( parent->GetWindowStyleFlag() & wxVSCROLL )
1198         msStyle |= WS_VSCROLL ;
1199
1200 #if defined(__WIN95__)
1201   DWORD exStyle = WS_EX_CLIENTEDGE;
1202 #else
1203   DWORD exStyle = 0;
1204 #endif
1205
1206   wxWndHook = this;
1207   m_hWnd = (WXHWND) ::CreateWindowEx(exStyle, "mdiclient", NULL,
1208                 msStyle, 0, 0, 0, 0, (HWND) parent->GetHWND(), NULL,
1209                 wxGetInstance(), (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1210   SubclassWin(m_hWnd);
1211   wxWndHook = NULL;
1212
1213   return (m_hWnd != 0) ;
1214 }
1215
1216 // Window procedure: here for debugging purposes
1217 long wxMDIClientWindow::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1218 {
1219     return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
1220 //    return MSWDefWindowProc(nMsg, wParam, lParam);
1221 }
1222
1223 long wxMDIClientWindow::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1224 {
1225         if ( MSWGetOldWndProc() != 0)
1226                 return ::CallWindowProc((FARPROC)MSWGetOldWndProc(), (HWND) GetHWND(), (UINT) nMsg, (WPARAM) wParam, (LPARAM) lParam);
1227         else
1228                 return ::DefWindowProc((HWND) m_hWnd, (UINT) nMsg, (WPARAM) wParam, (LPARAM) lParam);
1229 }
1230
1231 // Explicitly call default scroll behaviour
1232 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1233 {
1234     // Note: for client windows, the scroll position is not set in
1235     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1236     // scroll position we're at.
1237     // This makes it hard to paint patterns or bitmaps in the background,
1238     // and have the client area scrollable as well.
1239
1240     if ( event.GetOrientation() == wxHORIZONTAL )
1241         m_scrollX = event.GetPosition(); // Always returns zero!
1242     else
1243         m_scrollY = event.GetPosition(); // Always returns zero!
1244
1245         Default();
1246 }
1247
1248 // Should hand the message to the default proc
1249 long wxMDIClientWindow::MSWOnMDIActivate(long bActivate, WXHWND, WXHWND)
1250 {
1251     return Default();
1252 }
1253