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 wxUSE_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 wxUSE_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 wxUSE_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 wxUSE_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 wxUSE_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 /*
 491     if (wxCurrentPopupMenu)
 492     {
 493         wxMenu *popupMenu = wxCurrentPopupMenu;
 494         wxCurrentPopupMenu = NULL;
 495         if (!popupMenu->MSWCommand(cmd, id))
 496             return TRUE;
 497     }
 498 */
 499
 500     switch (id)
 501     {
 502       case IDM_WINDOWCASCADE:
 503         SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDICASCADE, MDITILE_SKIPDISABLED, 0);
 504         return TRUE;
 505       case IDM_WINDOWTILE:
 506         SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDITILE, MDITILE_HORIZONTAL, 0);
 507         return TRUE;
 508       case IDM_WINDOWICONS:
 509         SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDIICONARRANGE, 0, 0);
 510         return TRUE;
 511       case IDM_WINDOWNEXT:
 512         SendMessage((HWND) GetClientWindow()->GetHWND(), WM_MDINEXT, 0, 0);
 513         return TRUE;
 514       default:
 515         break;
 516      }
 517     if (id >= 0xF000)
 518     {
 519 #if WXDEBUG > 1
 520       wxDebugMsg("wxMDIFrame::OnCommand %d: system command: calling default window proc\n", GetHWND());
 521 #endif
 522       return FALSE; // Get WndProc to call default proc
 523     }
 524
 525     if (m_parentFrameActive && (id < wxFIRST_MDI_CHILD || id > wxLAST_MDI_CHILD))
 526     {
 527       ProcessCommand(id);
 528       return TRUE;
 529     }
 530     else if (m_currentChild && (id < wxFIRST_MDI_CHILD || id > wxLAST_MDI_CHILD))
 531     {
 532 #if WXDEBUG > 1
 533       wxDebugMsg("wxMDIFrame::MSWOnCommand %d: calling child OnCommand\n", GetHWND());
 534 #endif
 535       return m_currentChild->MSWOnCommand(id, cmd, control);
 536     }
 537   }
 538   if (id >= wxFIRST_MDI_CHILD && id <= wxLAST_MDI_CHILD)
 539   {
 540     wxNode* node = GetChildren()->First();
 541     while (node)
 542     {
 543         wxWindow* child = (wxWindow*) node->Data();
 544         if (child->GetHWND())
 545         {
 546 #ifdef __WIN32__
 547             long childId = GetWindowLong((HWND) child->GetHWND(), GWL_ID);
 548 #else
 549             long childId = GetWindowWord((HWND) child->GetHWND(), GWW_ID);
 550 #endif
 551             if (childId == id)
 552             {
 553                 ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDIACTIVATE, (WPARAM) (HWND) child->GetHWND(), 0);
 554                 return TRUE;
 555             }
 556         }
 557         node = node->Next();
 558     }
 559 /*
 560     wxWindow* child = FindItem(id);
 561     if (child)
 562     {
 563         ::SendMessage( (HWND) GetClientWindow()->GetHWND(), WM_MDIACTIVATE, (WPARAM) (HWND) child->GetHWND(), 0);
 564         return TRUE;
 565     }
 566 */
 567   }
 568
 569   return FALSE;
 570 }
 571
 572 void wxMDIParentFrame::MSWOnMenuHighlight(WXWORD nItem, WXWORD nFlags, WXHMENU hSysMenu)
 573 {
 574   if (m_parentFrameActive)
 575   {
 576     if (nFlags == 0xFFFF && hSysMenu == (WXHMENU) NULL)
 577     {
 578         wxMenuEvent event(wxEVT_MENU_HIGHLIGHT, -1);
 579         event.SetEventObject( this );
 580         GetEventHandler()->ProcessEvent(event);
 581     }
 582     else if (nFlags != MF_SEPARATOR)
 583     {
 584         wxMenuEvent event(wxEVT_MENU_HIGHLIGHT, nItem);
 585         event.SetEventObject( this );
 586         GetEventHandler()->ProcessEvent(event);
 587     }
 588   }
 589   else if (m_currentChild)
 590   {
 591     m_currentChild->MSWOnMenuHighlight(nItem, nFlags, hSysMenu);
 592   }
 593 }
 594
 595 long wxMDIParentFrame::MSWDefWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 596 {
 597         WXHWND clientWnd;
 598         if ( GetClientWindow() )
 599             clientWnd = GetClientWindow()->GetHWND();
 600         else
 601                 clientWnd = 0;
 602
 603   return DefFrameProc((HWND) GetHWND(), (HWND) clientWnd, message, wParam, lParam);
 604 }
 605
 606 bool wxMDIParentFrame::MSWProcessMessage(WXMSG* msg)
 607 {
 608   MSG *pMsg = (MSG *)msg;
 609
 610   if ((m_currentChild != (wxWindow *)NULL) && (m_currentChild->GetHWND() != (WXHWND) NULL) && m_currentChild->MSWProcessMessage(msg))
 611      return TRUE;
 612
 613   return FALSE;
 614 }
 615
 616 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 617 {
 618   MSG *pMsg = (MSG *)msg;
 619
 620   if ((m_currentChild != (wxWindow *)NULL) && (m_currentChild->GetHWND() != (WXHWND) NULL) && m_currentChild->MSWTranslateMessage(msg))
 621      return TRUE;
 622
 623   if (m_acceleratorTable.Ok() &&
 624           ::TranslateAccelerator((HWND) GetHWND(), (HACCEL) m_acceleratorTable.GetHACCEL(), pMsg))
 625     return TRUE;
 626
 627   if (pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN)
 628   {
 629     if (::TranslateMDISysAccel((HWND) GetClientWindow()->GetHWND(), pMsg))
 630       return TRUE;
 631   }
 632
 633   return FALSE;
 634 }
 635
 636
 637 bool wxMDIParentFrame::MSWOnEraseBkgnd(WXHDC WXUNUSED(pDC))
 638 {
 639   return TRUE;
 640 }
 641
 642 extern wxWindow *wxWndHook;
 643 extern wxList *wxWinHandleList;
 644
 645 wxMDIChildFrame::wxMDIChildFrame(void)
 646 {
 647 //      m_active = FALSE;
 648 }
 649
 650 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 651            wxWindowID id,
 652            const wxString& title,
 653            const wxPoint& pos,
 654            const wxSize& size,
 655            long style,
 656            const wxString& name)
 657 {
 658   m_defaultIcon = (WXHICON) (wxSTD_MDICHILDFRAME_ICON ? wxSTD_MDICHILDFRAME_ICON : wxDEFAULT_MDICHILDFRAME_ICON);
 659
 660   SetName(name);
 661
 662   if ( id > -1 )
 663     m_windowId = id;
 664   else
 665     m_windowId = (int)NewControlId();
 666
 667   if (parent) parent->AddChild(this);
 668
 669   wxWndHook = this;
 670
 671   int x = pos.x;
 672   int y = pos.y;
 673   int width = size.x;
 674   int height = size.y;
 675
 676   MDICREATESTRUCT mcs;
 677
 678   mcs.szClass = wxMDIChildFrameClassName;
 679   mcs.szTitle = title;
 680   mcs.hOwner = wxGetInstance();
 681   if (x > -1) mcs.x = x;
 682   else mcs.x = CW_USEDEFAULT;
 683
 684   if (y > -1) mcs.y = y;
 685   else mcs.y = CW_USEDEFAULT;
 686
 687   if (width > -1) mcs.cx = width;
 688   else mcs.cx = CW_USEDEFAULT;
 689
 690   if (height > -1) mcs.cy = height;
 691   else mcs.cy = CW_USEDEFAULT;
 692
 693   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN ;
 694   if (style & wxMINIMIZE_BOX)
 695     msflags |= WS_MINIMIZEBOX;
 696   if (style & wxMAXIMIZE_BOX)
 697     msflags |= WS_MAXIMIZEBOX;
 698   if (style & wxTHICK_FRAME)
 699     msflags |= WS_THICKFRAME;
 700   if (style & wxSYSTEM_MENU)
 701     msflags |= WS_SYSMENU;
 702   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 703     msflags |= WS_MINIMIZE;
 704   if (style & wxMAXIMIZE)
 705     msflags |= WS_MAXIMIZE;
 706   if (style & wxCAPTION)
 707     msflags |= WS_CAPTION;
 708
 709   mcs.style = msflags;
 710
 711   mcs.lParam = 0;
 712
 713   DWORD Return = SendMessage((HWND) parent->GetClientWindow()->GetHWND(),
 714                 WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 715
 716   //handle = (HWND)LOWORD(Return);
 717   // Must be the DWORRD for WIN32. And in 16 bits, HIWORD=0 (says Microsoft)
 718   m_hWnd = (WXHWND)Return;
 719
 720   // This gets reassigned so can't be stored
 721 //  m_windowId = GetWindowLong((HWND) m_hWnd, GWL_ID);
 722
 723   wxWndHook = NULL;
 724   wxWinHandleList->Append((long)GetHWND(), this);
 725
 726   SetWindowLong((HWND) GetHWND(), 0, (long)this);
 727
 728   wxModelessWindows.Append(this);
 729   return TRUE;
 730 }
 731
 732 wxMDIChildFrame::~wxMDIChildFrame(void)
 733 {
 734         MSWDestroyWindow();
 735
 736     ResetWindowStyle(NULL);
 737 }
 738
 739 // Set the client size (i.e. leave the calculation of borders etc.
 740 // to wxWindows)
 741 void wxMDIChildFrame::SetClientSize(int width, int height)
 742 {
 743   HWND hWnd = (HWND) GetHWND();
 744
 745   RECT rect;
 746   GetClientRect(hWnd, &rect);
 747
 748   RECT rect2;
 749   GetWindowRect(hWnd, &rect2);
 750
 751   // Find the difference between the entire window (title bar and all)
 752   // and the client area; add this to the new client size to move the
 753   // window
 754   int actual_width = rect2.right - rect2.left - rect.right + width;
 755   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 756
 757   if (GetStatusBar())
 758   {
 759         int sx, sy;
 760         GetStatusBar()->GetSize(&sx, &sy);
 761     actual_height += sy;
 762   }
 763
 764   POINT point;
 765   point.x = rect2.left;
 766   point.y = rect2.top;
 767
 768   // If there's an MDI parent, must subtract the parent's top left corner
 769   // since MoveWindow moves relative to the parent
 770   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 771   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 772
 773   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
 774
 775   wxSizeEvent event(wxSize(width, height), m_windowId);
 776   event.SetEventObject( this );
 777   GetEventHandler()->ProcessEvent(event);
 778 }
 779
 780 void wxMDIChildFrame::GetPosition(int *x, int *y) const
 781 {
 782   RECT rect;
 783   GetWindowRect((HWND) GetHWND(), &rect);
 784   POINT point;
 785   point.x = rect.left;
 786   point.y = rect.top;
 787
 788   // Since we now have the absolute screen coords,
 789   // if there's a parent we must subtract its top left corner
 790   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 791   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 792
 793   *x = point.x;
 794   *y = point.y;
 795 }
 796
 797 void wxMDIChildFrame::SetMenuBar(wxMenuBar *menu_bar)
 798 {
 799   if (!menu_bar)
 800   {
 801     m_frameMenuBar = NULL;
 802     return;
 803   }
 804
 805   if (menu_bar->m_menuBarFrame)
 806          return;
 807
 808   int i;
 809   HMENU menu = CreateMenu();
 810
 811   for (i = 0; i < menu_bar->m_menuCount; i ++)
 812   {
 813     HMENU popup = (HMENU)menu_bar->m_menus[i]->m_hMenu;
 814     //
 815     // After looking Bounds Checker result, it seems that all
 816     // menus must be individually destroyed. So, don't reset m_hMenu,
 817     // to  allow ~wxMenu to do the job.
 818     //
 819     menu_bar->m_menus[i]->m_savehMenu = (WXHMENU) popup;
 820     // Uncommenting for the moment... JACS
 821     menu_bar->m_menus[i]->m_hMenu = 0;
 822     ::AppendMenu((HMENU) menu, MF_POPUP | MF_STRING, (UINT)popup, menu_bar->m_titles[i]);
 823   }
 824
 825   menu_bar->m_hMenu = (WXHMENU)menu;
 826   if (m_frameMenuBar)
 827     delete m_frameMenuBar;
 828
 829   this->m_hMenu = (WXHMENU) menu;
 830
 831    wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 832
 833    parent->m_parentFrameActive = FALSE;
 834    HMENU subMenu = GetSubMenu((HMENU) parent->GetWindowMenu(), 0);
 835
 836    // Try to insert Window menu in front of Help, otherwise append it.
 837    int N = GetMenuItemCount(menu);
 838    bool success = FALSE;
 839    for (i = 0; i < N; i++)
 840    {
 841         char buf[100];
 842         int chars = GetMenuString(menu, i, buf, 100, MF_BYPOSITION);
 843         if ((chars > 0) && (strcmp(buf, "&Help") == 0 ||
 844                             strcmp(buf, "Help") == 0))
 845         {
 846            success = TRUE;
 847            InsertMenu(menu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
 848                       (UINT)subMenu, "&Window");
 849            break;
 850         }
 851       }
 852   if (!success)
 853     AppendMenu(menu, MF_POPUP,
 854                          (UINT)subMenu,
 855                          "&Window");
 856 #ifdef __WIN32__
 857   SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU,
 858                   (WPARAM)menu,
 859                   (LPARAM)subMenu);
 860 #else
 861   SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
 862                   MAKELPARAM(menu, subMenu));
 863 #endif
 864
 865   DrawMenuBar((HWND) parent->GetHWND());
 866   m_frameMenuBar = menu_bar;
 867   menu_bar->m_menuBarFrame = this;
 868 }
 869
 870 // MDI operations
 871 void wxMDIChildFrame::Maximize(void)
 872 {
 873     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 874     if ( parent && parent->GetClientWindow() )
 875         ::SendMessage( (HWND) parent->GetClientWindow()->GetHWND(), WM_MDIMAXIMIZE, (WPARAM) (HWND) GetHWND(), 0);
 876 }
 877
 878 void wxMDIChildFrame::Restore(void)
 879 {
 880     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 881     if ( parent && parent->GetClientWindow() )
 882         ::SendMessage( (HWND) parent->GetClientWindow()->GetHWND(), WM_MDIRESTORE, (WPARAM) (HWND) GetHWND(), 0);
 883 }
 884
 885 void wxMDIChildFrame::Activate(void)
 886 {
 887     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 888     if ( parent && parent->GetClientWindow() )
 889         ::SendMessage( (HWND) parent->GetClientWindow()->GetHWND(), WM_MDIACTIVATE, (WPARAM) (HWND) GetHWND(), 0);
 890 }
 891
 892 static HWND invalidHandle = 0;
 893 void wxMDIChildFrame::MSWOnSize(int x, int y, WXUINT id)
 894 {
 895   if (!GetHWND()) return;
 896
 897   if (invalidHandle == (HWND) GetHWND())
 898   {
 899 #if WXDEBUG > 1
 900   wxDebugMsg("wxMDIChildFrame::OnSize %d: invalid, so returning.\n", GetHWND());
 901 #endif
 902     return;
 903   }
 904
 905   (void)MSWDefWindowProc(m_lastMsg, m_lastWParam, m_lastLParam);
 906
 907   switch (id)
 908   {
 909     case SIZEFULLSCREEN:
 910     case SIZENORMAL:
 911       m_iconized = FALSE;
 912     break;
 913     case SIZEICONIC:
 914       m_iconized = TRUE;
 915     break;
 916   }
 917
 918   if (!m_iconized)
 919   {
 920     // forward WM_SIZE to status bar control
 921 #if wxUSE_NATIVE_STATUSBAR
 922     if (m_frameStatusBar && m_frameStatusBar->IsKindOf(CLASSINFO(wxStatusBar95)))
 923     {
 924       wxSizeEvent event(wxSize(x, y), m_frameStatusBar->GetId());
 925       event.SetEventObject( m_frameStatusBar );
 926
 927       ((wxStatusBar95 *)m_frameStatusBar)->OnSize(event);
 928     }
 929 #endif
 930
 931     PositionStatusBar();
 932     PositionToolBar();
 933
 934     wxWindow::MSWOnSize(x, y, id);
 935   }
 936 }
 937
 938 bool wxMDIChildFrame::MSWOnCommand(WXWORD id, WXWORD cmd, WXHWND control)
 939 {
 940 #if WXDEBUG > 1
 941   wxDebugMsg("wxMDIChildFrame::MSWOnCommand %d\n", GetHWND());
 942 #endif
 943 //  if ((cmd == 0) && GetHWND())
 944   if (GetHWND())
 945   {
 946     // In case it's e.g. a toolbar.
 947     wxWindow *win = wxFindWinFromHandle(control);
 948     if (win)
 949       return win->MSWCommand(cmd, id);
 950
 951     if (wxCurrentPopupMenu)
 952     {
 953         wxMenu *popupMenu = wxCurrentPopupMenu;
 954         wxCurrentPopupMenu = NULL;
 955         if (popupMenu->MSWCommand(cmd, id))
 956             return TRUE;
 957     }
 958
 959     if (GetMenuBar() && GetMenuBar()->FindItemForId(id))
 960     {
 961       ProcessCommand(id);
 962       return TRUE;
 963     }
 964     else
 965       return FALSE;
 966     return TRUE;
 967   }
 968   else
 969     return FALSE;
 970 }
 971
 972 long wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXUINT wParam, WXLPARAM lParam)
 973 {
 974   if (GetHWND())
 975     return DefMDIChildProc((HWND) GetHWND(), (UINT) message, (WPARAM) wParam, (LPARAM) lParam);
 976   else return 0;
 977 }
 978
 979 bool wxMDIChildFrame::MSWProcessMessage(WXMSG *msg)
 980 {
 981   return FALSE;
 982 }
 983
 984 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
 985 {
 986   MSG *pMsg = (MSG *)msg;
 987   if (m_acceleratorTable.Ok())
 988   {
 989     wxFrame *parent = (wxFrame *)GetParent();
 990     HWND parent_hwnd = (HWND) parent->GetHWND();
 991     return (::TranslateAccelerator(parent_hwnd, (HACCEL) m_acceleratorTable.GetHACCEL(), pMsg) != 0);
 992   }
 993
 994   return FALSE;
 995 }
 996
 997 long wxMDIChildFrame::MSWOnMDIActivate(long activate, WXHWND WXUNUSED(one), WXHWND WXUNUSED(two))
 998 {
 999   wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1000   HMENU parent_menu = (HMENU) parent->GetWinMenu();
1001 #if WXDEBUG > 1
1002   wxDebugMsg("Parent menu is %d\n", parent_menu);
1003 #endif
1004   HMENU child_menu = (HMENU) GetWinMenu();
1005 #if WXDEBUG > 1
1006   wxDebugMsg("Child menu is %d\n", child_menu);
1007 #endif
1008
1009   if (activate)
1010   {
1011 //    m_active = TRUE;
1012     parent->m_currentChild = this;
1013     if (child_menu)
1014     {
1015       parent->m_parentFrameActive = FALSE;
1016       HMENU subMenu = GetSubMenu((HMENU) parent->GetWindowMenu(), 0);
1017 #if WXDEBUG > 1
1018       wxDebugMsg("Window submenu is %d\n", subMenu);
1019 #endif
1020 //      HMENU subMenu = 0;
1021 #ifdef __WIN32__
1022       ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU,
1023                     (WPARAM)child_menu,
1024                     (LPARAM)subMenu);
1025 #else
1026       ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
1027                   MAKELONG(child_menu, subMenu));
1028 #endif
1029
1030       ::DrawMenuBar((HWND) parent->GetHWND());
1031     }
1032     wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_windowId);
1033     event.SetEventObject( this );
1034     GetEventHandler()->ProcessEvent(event);
1035   }
1036   else
1037   {
1038     if (parent->m_currentChild == this)
1039       parent->m_currentChild = NULL;
1040
1041     wxActivateEvent event(wxEVT_ACTIVATE, FALSE, m_windowId);
1042     event.SetEventObject( this );
1043     GetEventHandler()->ProcessEvent(event);
1044
1045 //    m_active = FALSE;
1046     if (parent_menu)
1047     {
1048       parent->m_parentFrameActive = TRUE;
1049       HMENU subMenu = GetSubMenu((HMENU) parent->GetWindowMenu(), 0);
1050 #if WXDEBUG > 1
1051       wxDebugMsg("Window submenu is %d\n", subMenu);
1052 #endif
1053 //      HMENU subMenu = 0;
1054 #ifdef __WIN32__
1055       ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU,
1056                     (WPARAM)parent_menu,
1057                     (LPARAM)subMenu);
1058 #else
1059       ::SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDISETMENU, 0,
1060                   MAKELONG(parent_menu, subMenu));
1061 #endif
1062
1063       ::DrawMenuBar((HWND) parent->GetHWND());
1064     }
1065   }
1066   bool flag = (activate != 0);
1067   wxActivateEvent event(wxEVT_ACTIVATE, flag, m_windowId);
1068   event.SetEventObject( this );
1069   GetEventHandler()->ProcessEvent(event);
1070
1071 #if WXDEBUG > 1
1072   wxDebugMsg("Finished (de)activating\n");
1073 #endif
1074   return 0;
1075 }
1076
1077 void wxMDIChildFrame::MSWDestroyWindow(void)
1078 {
1079   MSWDetachWindowMenu();
1080   invalidHandle = (HWND) GetHWND();
1081
1082   wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1083
1084   // Must make sure this handle is invalidated (set to NULL)
1085   // since all sorts of things could happen after the
1086   // child client is destroyed, but before the wxFrame is
1087   // destroyed.
1088
1089   HWND oldHandle = (HWND)GetHWND();
1090 #if WXDEBUG > 1
1091   wxDebugMsg("*** About to DestroyWindow MDI child %d\n", oldHandle);
1092 #endif
1093 #ifdef __WIN32__
1094   SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDIDESTROY, (WPARAM)oldHandle, (LPARAM)0);
1095 #else
1096   SendMessage((HWND) parent->GetClientWindow()->GetHWND(), WM_MDIDESTROY, (HWND)oldHandle, 0);
1097 #endif
1098 #if WXDEBUG > 1
1099   wxDebugMsg("*** Finished DestroyWindow MDI child %d\n", oldHandle);
1100 #endif
1101   invalidHandle = 0;
1102
1103   if (m_hMenu)
1104   {
1105     ::DestroyMenu((HMENU) m_hMenu);
1106     m_hMenu = 0;
1107   }
1108   m_hWnd = 0;
1109 }
1110
1111 // Change the client window's extended style so we don't
1112 // get a client edge style when a child is maximised (a double
1113 // border looks silly.)
1114 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1115 {
1116 #if defined(__WIN95__)
1117     RECT *rect = (RECT *)vrect;
1118         wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1119         wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1120         if (!pChild || (pChild == this))
1121         {
1122                 DWORD dwStyle = ::GetWindowLong((HWND) pFrameWnd->GetClientWindow()->GetHWND(), GWL_EXSTYLE);
1123         DWORD dwThisStyle = ::GetWindowLong((HWND) GetHWND(), GWL_STYLE);
1124                 DWORD dwNewStyle = dwStyle;
1125                 if (pChild != NULL && (dwThisStyle & WS_MAXIMIZE))
1126                         dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1127                 else
1128                         dwNewStyle |= WS_EX_CLIENTEDGE;
1129
1130                 if (dwStyle != dwNewStyle)
1131                 {
1132                         ::RedrawWindow((HWND) pFrameWnd->GetClientWindow()->GetHWND(), NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN);
1133                         ::SetWindowLong((HWND) pFrameWnd->GetClientWindow()->GetHWND(), GWL_EXSTYLE, dwNewStyle);
1134                         ::SetWindowPos((HWND) pFrameWnd->GetClientWindow()->GetHWND(), NULL, 0, 0, 0, 0,
1135                                 SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOCOPYBITS);
1136                         if (rect)
1137                                 ::GetClientRect((HWND) pFrameWnd->GetClientWindow()->GetHWND(), rect);
1138                         return TRUE;
1139                 }
1140         }
1141         return FALSE;
1142 #else
1143     return FALSE;
1144 #endif
1145 }
1146
1147 void wxMDIChildFrame::MSWOnWindowPosChanging(void *pos)
1148 {
1149     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1150 #if defined(__WIN95__)
1151     if (!(lpPos->flags & SWP_NOSIZE))
1152         {
1153                 RECT rectClient;
1154                 DWORD dwExStyle = ::GetWindowLong((HWND) GetHWND(), GWL_EXSTYLE);
1155         DWORD dwStyle = ::GetWindowLong((HWND) GetHWND(), GWL_STYLE);
1156                 if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1157                 {
1158                         ::AdjustWindowRectEx(&rectClient, dwStyle, FALSE, dwExStyle);
1159                         lpPos->x = rectClient.left;
1160             lpPos->y = rectClient.top;
1161                         lpPos->cx = rectClient.right - rectClient.left;
1162             lpPos->cy = rectClient.bottom - rectClient.top;
1163                 }
1164             wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1165         if (pFrameWnd && pFrameWnd->GetToolBar())
1166         {
1167             pFrameWnd->GetToolBar()->Refresh();
1168         }
1169         }
1170 #endif
1171     Default();
1172 }
1173
1174 // Client window
1175 wxMDIClientWindow::wxMDIClientWindow(void)
1176 {
1177     m_scrollX = 0;
1178     m_scrollY = 0;
1179 }
1180
1181 wxMDIClientWindow::~wxMDIClientWindow(void)
1182 {
1183 }
1184
1185 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1186 {
1187   m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE);
1188
1189   CLIENTCREATESTRUCT ccs;
1190   m_windowStyle = style;
1191   m_windowParent = parent;
1192
1193   ccs.hWindowMenu = (HMENU) parent->GetWindowMenu();
1194   ccs.idFirstChild = wxFIRST_MDI_CHILD;
1195
1196   DWORD msStyle = WS_VISIBLE | WS_CHILD | WS_CLIPCHILDREN ;
1197   if ( parent->GetWindowStyleFlag() & wxHSCROLL )
1198         msStyle |= WS_HSCROLL;
1199   if ( parent->GetWindowStyleFlag() & wxVSCROLL )
1200         msStyle |= WS_VSCROLL ;
1201
1202 #if defined(__WIN95__)
1203   DWORD exStyle = WS_EX_CLIENTEDGE;
1204 #else
1205   DWORD exStyle = 0;
1206 #endif
1207
1208   wxWndHook = this;
1209   m_hWnd = (WXHWND) ::CreateWindowEx(exStyle, "mdiclient", NULL,
1210                 msStyle, 0, 0, 0, 0, (HWND) parent->GetHWND(), NULL,
1211                 wxGetInstance(), (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1212   SubclassWin(m_hWnd);
1213   wxWndHook = NULL;
1214
1215   return (m_hWnd != 0) ;
1216 }
1217
1218 // Window procedure: here for debugging purposes
1219 long wxMDIClientWindow::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1220 {
1221     return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
1222 //    return MSWDefWindowProc(nMsg, wParam, lParam);
1223 }
1224
1225 long wxMDIClientWindow::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1226 {
1227         if ( MSWGetOldWndProc() != 0)
1228                 return ::CallWindowProc(CASTWNDPROC MSWGetOldWndProc(), (HWND) GetHWND(), (UINT) nMsg, (WPARAM) wParam, (LPARAM) lParam);
1229         else
1230                 return ::DefWindowProc((HWND) m_hWnd, (UINT) nMsg, (WPARAM) wParam, (LPARAM) lParam);
1231 }
1232
1233 // Explicitly call default scroll behaviour
1234 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1235 {
1236     // Note: for client windows, the scroll position is not set in
1237     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1238     // scroll position we're at.
1239     // This makes it hard to paint patterns or bitmaps in the background,
1240     // and have the client area scrollable as well.
1241
1242     if ( event.GetOrientation() == wxHORIZONTAL )
1243         m_scrollX = event.GetPosition(); // Always returns zero!
1244     else
1245         m_scrollY = event.GetPosition(); // Always returns zero!
1246
1247         Default();
1248 }
1249
1250 // Should hand the message to the default proc
1251 long wxMDIClientWindow::MSWOnMDIActivate(long bActivate, WXHWND, WXHWND)
1252 {
1253     return Default();
1254 }
1255