src/msw/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/mdi.cpp
   3 // Purpose:     MDI classes for wxMSW
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "mdi.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/setup.h"
  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     #if wxUSE_STATUSBAR
  39         #include "wx/statusbr.h"
  40     #endif
  41     #include "wx/settings.h"
  42     #include "wx/intl.h"
  43     #include "wx/log.h"
  44 #endif
  45
  46 #include "wx/mdi.h"
  47 #include "wx/msw/private.h"
  48
  49 #if wxUSE_STATUSBAR && wxUSE_NATIVE_STATUSBAR
  50     #include "wx/msw/statbr95.h"
  51 #endif
  52
  53 #if wxUSE_TOOLBAR
  54     #include "wx/toolbar.h"
  55 #endif // wxUSE_TOOLBAR
  56
  57 #include <string.h>
  58
  59 // ---------------------------------------------------------------------------
  60 // global variables
  61 // ---------------------------------------------------------------------------
  62
  63 extern wxWindowList wxModelessWindows;      // from dialog.cpp
  64 extern wxMenu *wxCurrentPopupMenu;
  65
  66 extern const wxChar *wxMDIFrameClassName;   // from app.cpp
  67 extern const wxChar *wxMDIChildFrameClassName;
  68 extern const wxChar *wxMDIChildFrameClassNameNoRedraw;
  69
  70 extern wxWindow *wxWndHook;                 // from window.cpp
  71
  72 extern void wxAssociateWinWithHandle(HWND hWnd, wxWindow *win);
  73 extern void wxRemoveHandleAssociation(wxWindow *win);
  74
  75 static HWND invalidHandle = 0;
  76
  77 // ---------------------------------------------------------------------------
  78 // constants
  79 // ---------------------------------------------------------------------------
  80
  81 static const int IDM_WINDOWTILE  = 4001;
  82 static const int IDM_WINDOWTILEHOR  = 4001;
  83 static const int IDM_WINDOWCASCADE = 4002;
  84 static const int IDM_WINDOWICONS = 4003;
  85 static const int IDM_WINDOWNEXT = 4004;
  86 static const int IDM_WINDOWTILEVERT = 4005;
  87
  88 // This range gives a maximum of 500 MDI children. Should be enough :-)
  89 static const int wxFIRST_MDI_CHILD = 4100;
  90 static const int wxLAST_MDI_CHILD = 4600;
  91
  92 // Status border dimensions
  93 static const int wxTHICK_LINE_BORDER = 3;
  94 static const int wxTHICK_LINE_WIDTH  = 1;
  95
  96 // ---------------------------------------------------------------------------
  97 // private functions
  98 // ---------------------------------------------------------------------------
  99
 100 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
 101 // of the parent of win (which is supposed to be the MDI client window)
 102 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
 103
 104 // insert the window menu (subMenu) into menu just before "Help" submenu or at
 105 // the very end if not found
 106 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
 107
 108 // Remove the window menu
 109 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu);
 110
 111 // is this an id of an MDI child?
 112 inline bool IsMdiCommandId(int id)
 113 {
 114     return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
 115 }
 116
 117 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
 118                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
 119
 120 // ===========================================================================
 121 // implementation
 122 // ===========================================================================
 123
 124 // ---------------------------------------------------------------------------
 125 // wxWin macros
 126 // ---------------------------------------------------------------------------
 127
 128 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 129 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 130 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 131
 132 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 133     EVT_SIZE(wxMDIParentFrame::OnSize)
 134     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 135 END_EVENT_TABLE()
 136
 137 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 138     EVT_IDLE(wxMDIChildFrame::OnIdle)
 139 END_EVENT_TABLE()
 140
 141 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 142     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 143 END_EVENT_TABLE()
 144
 145 // ===========================================================================
 146 // wxMDIParentFrame: the frame which contains the client window which manages
 147 // the children
 148 // ===========================================================================
 149
 150 wxMDIParentFrame::wxMDIParentFrame()
 151 {
 152     m_clientWindow = NULL;
 153     m_currentChild = NULL;
 154     m_windowMenu = (wxMenu*) NULL;
 155     m_parentFrameActive = TRUE;
 156 }
 157
 158 bool wxMDIParentFrame::Create(wxWindow *parent,
 159                               wxWindowID id,
 160                               const wxString& title,
 161                               const wxPoint& pos,
 162                               const wxSize& size,
 163                               long style,
 164                               const wxString& name)
 165 {
 166   m_defaultIcon = (WXHICON) (wxSTD_MDIPARENTFRAME_ICON
 167                                 ? wxSTD_MDIPARENTFRAME_ICON
 168                                 : wxDEFAULT_MDIPARENTFRAME_ICON);
 169
 170   m_clientWindow = NULL;
 171   m_currentChild = NULL;
 172
 173   // this style can be used to prevent a window from having the standard MDI
 174   // "Window" menu
 175   if ( style & wxFRAME_NO_WINDOW_MENU )
 176   {
 177       m_windowMenu = (wxMenu *)NULL;
 178   }
 179   else // normal case: we have the window menu, so construct it
 180   {
 181       m_windowMenu = new wxMenu;
 182
 183       m_windowMenu->Append(IDM_WINDOWCASCADE, _("&Cascade"));
 184       m_windowMenu->Append(IDM_WINDOWTILEHOR, _("Tile &Horizontally"));
 185       m_windowMenu->Append(IDM_WINDOWTILEVERT, _("Tile &Vertically"));
 186       m_windowMenu->AppendSeparator();
 187       m_windowMenu->Append(IDM_WINDOWICONS, _("&Arrange Icons"));
 188       m_windowMenu->Append(IDM_WINDOWNEXT, _("&Next"));
 189   }
 190
 191   m_parentFrameActive = TRUE;
 192
 193   if (!parent)
 194     wxTopLevelWindows.Append(this);
 195
 196   SetName(name);
 197   m_windowStyle = style;
 198
 199   if (parent) parent->AddChild(this);
 200
 201   if ( id > -1 )
 202     m_windowId = id;
 203   else
 204     m_windowId = (int)NewControlId();
 205
 206   int x = pos.x;
 207   int y = pos.y;
 208   int width = size.x;
 209   int height = size.y;
 210
 211   DWORD msflags = WS_OVERLAPPED;
 212   if (style & wxMINIMIZE_BOX)
 213     msflags |= WS_MINIMIZEBOX;
 214   if (style & wxMAXIMIZE_BOX)
 215     msflags |= WS_MAXIMIZEBOX;
 216   if (style & wxTHICK_FRAME)
 217     msflags |= WS_THICKFRAME;
 218   if (style & wxSYSTEM_MENU)
 219     msflags |= WS_SYSMENU;
 220   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 221     msflags |= WS_MINIMIZE;
 222   if (style & wxMAXIMIZE)
 223     msflags |= WS_MAXIMIZE;
 224   if (style & wxCAPTION)
 225     msflags |= WS_CAPTION;
 226
 227   if (style & wxCLIP_CHILDREN)
 228     msflags |= WS_CLIPCHILDREN;
 229
 230   if ( !wxWindow::MSWCreate(m_windowId,
 231                             parent,
 232                             wxMDIFrameClassName,
 233                             this,
 234                             title,
 235                             x, y, width, height,
 236                             msflags) )
 237   {
 238       return FALSE;
 239   }
 240
 241   wxModelessWindows.Append(this);
 242
 243   // unlike (almost?) all other windows, frames are created hidden
 244   m_isShown = FALSE;
 245
 246   return TRUE;
 247 }
 248
 249 wxMDIParentFrame::~wxMDIParentFrame()
 250 {
 251     DestroyChildren();
 252     // already delete by DestroyChildren()
 253     m_frameToolBar = NULL;
 254     m_frameStatusBar = NULL;
 255
 256     // ::DestroyMenu((HMENU)m_windowMenu);
 257     if (m_windowMenu)
 258     {
 259         delete m_windowMenu;
 260         m_windowMenu = (wxMenu*) NULL;
 261     }
 262
 263     if ( m_clientWindow )
 264     {
 265         if ( m_clientWindow->MSWGetOldWndProc() )
 266             m_clientWindow->UnsubclassWin();
 267
 268         m_clientWindow->SetHWND(0);
 269         delete m_clientWindow;
 270     }
 271 }
 272
 273 #if wxUSE_MENUS_NATIVE
 274
 275 void wxMDIParentFrame::InternalSetMenuBar()
 276 {
 277     m_parentFrameActive = TRUE;
 278
 279     wxMenu *menu = GetWindowMenu();
 280     HMENU subMenu = menu ? GetHmenuOf(menu) : 0;
 281
 282     InsertWindowMenu(GetClientWindow(), m_hMenu, subMenu);
 283 }
 284
 285 #endif // wxUSE_MENUS_NATIVE
 286
 287 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 288 {
 289     if (m_windowMenu)
 290     {
 291         if (GetMenuBar())
 292         {
 293             // Remove old window menu
 294             RemoveWindowMenu(GetClientWindow(), m_hMenu);
 295         }
 296
 297         delete m_windowMenu;
 298         m_windowMenu = (wxMenu*) NULL;
 299     }
 300     if (menu)
 301     {
 302         m_windowMenu = menu;
 303         if (GetMenuBar())
 304         {
 305             InsertWindowMenu(GetClientWindow(), m_hMenu,
 306                              GetHmenuOf(m_windowMenu));
 307         }
 308     }
 309 }
 310
 311 void wxMDIParentFrame::OnSize(wxSizeEvent&)
 312 {
 313     if ( GetClientWindow() )
 314     {
 315         int width, height;
 316         GetClientSize(&width, &height);
 317
 318         GetClientWindow()->SetSize(0, 0, width, height);
 319     }
 320 }
 321
 322 // Returns the active MDI child window
 323 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 324 {
 325     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 326                                     WM_MDIGETACTIVE, 0, 0L);
 327     if ( hWnd == 0 )
 328         return NULL;
 329     else
 330         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 331 }
 332
 333 // Create the client window class (don't Create the window, just return a new
 334 // class)
 335 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 336 {
 337     return new wxMDIClientWindow;
 338 }
 339
 340 // Responds to colour changes, and passes event on to children.
 341 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 342 {
 343     if ( m_clientWindow )
 344     {
 345         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
 346         m_clientWindow->Refresh();
 347     }
 348
 349     event.Skip();
 350 }
 351
 352 // ---------------------------------------------------------------------------
 353 // MDI operations
 354 // ---------------------------------------------------------------------------
 355
 356 void wxMDIParentFrame::Cascade()
 357 {
 358     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 359 }
 360
 361 // TODO: add a direction argument (hor/vert)
 362 void wxMDIParentFrame::Tile()
 363 {
 364     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE, MDITILE_HORIZONTAL, 0);
 365 }
 366
 367 void wxMDIParentFrame::ArrangeIcons()
 368 {
 369     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 370 }
 371
 372 void wxMDIParentFrame::ActivateNext()
 373 {
 374     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 375 }
 376
 377 void wxMDIParentFrame::ActivatePrevious()
 378 {
 379     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 380 }
 381
 382 // ---------------------------------------------------------------------------
 383 // the MDI parent frame window proc
 384 // ---------------------------------------------------------------------------
 385
 386 long wxMDIParentFrame::MSWWindowProc(WXUINT message,
 387                                      WXWPARAM wParam,
 388                                      WXLPARAM lParam)
 389 {
 390     long rc = 0;
 391     bool processed = FALSE;
 392
 393     switch ( message )
 394     {
 395         case WM_ACTIVATE:
 396             {
 397                 WXWORD state, minimized;
 398                 WXHWND hwnd;
 399                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 400
 401                 processed = HandleActivate(state, minimized != 0, hwnd);
 402             }
 403             break;
 404
 405         case WM_COMMAND:
 406             {
 407                 WXWORD id, cmd;
 408                 WXHWND hwnd;
 409                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 410
 411                 (void)HandleCommand(id, cmd, hwnd);
 412
 413                 // even if the frame didn't process it, there is no need to try it
 414                 // once again (i.e. call wxFrame::HandleCommand()) - we just dud it,
 415                 // so pretend we processed the message anyhow
 416                 processed = TRUE;
 417             }
 418
 419             // always pass this message DefFrameProc(), otherwise MDI menu
 420             // commands (and sys commands - more surprizingly!) won't work
 421             MSWDefWindowProc(message, wParam, lParam);
 422             break;
 423
 424         case WM_CREATE:
 425             m_clientWindow = OnCreateClient();
 426             // Uses own style for client style
 427             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 428             {
 429                 wxLogMessage(_("Failed to create MDI parent frame."));
 430
 431                 rc = -1;
 432             }
 433
 434             processed = TRUE;
 435             break;
 436
 437         case WM_ERASEBKGND:
 438             processed = TRUE;
 439
 440             // we erase background ourselves
 441             rc = TRUE;
 442             break;
 443
 444         case WM_MENUSELECT:
 445             {
 446                 WXWORD item, flags;
 447                 WXHMENU hmenu;
 448                 UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
 449
 450                 if ( m_parentFrameActive )
 451                 {
 452                     processed = HandleMenuSelect(item, flags, hmenu);
 453                 }
 454                 else if (m_currentChild)
 455                 {
 456                     processed = m_currentChild->
 457                         HandleMenuSelect(item, flags, hmenu);
 458                 }
 459             }
 460             break;
 461
 462         case WM_SIZE:
 463             // as we don't (usually) resize the MDI client to exactly fit the
 464             // client area (we put it below the toolbar, above statusbar &c),
 465             // we should not pass this one to DefFrameProc
 466             break;
 467     }
 468
 469     if ( !processed )
 470         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 471
 472     return rc;
 473 }
 474
 475 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 476 {
 477     bool processed = FALSE;
 478
 479     if ( wxWindow::HandleActivate(state, minimized, activate) )
 480     {
 481         // already processed
 482         processed = TRUE;
 483     }
 484
 485     // If this window is an MDI parent, we must also send an OnActivate message
 486     // to the current child.
 487     if ( (m_currentChild != NULL) &&
 488          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 489     {
 490         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_currentChild->GetId());
 491         event.SetEventObject( m_currentChild );
 492         if ( m_currentChild->GetEventHandler()->ProcessEvent(event) )
 493             processed = TRUE;
 494     }
 495
 496     return processed;
 497 }
 498
 499 bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 500 {
 501     // In case it's e.g. a toolbar.
 502     if ( hwnd )
 503     {
 504         wxWindow *win = wxFindWinFromHandle(hwnd);
 505         if ( win )
 506             return win->MSWCommand(cmd, id);
 507     }
 508
 509     // is it one of standard MDI commands?
 510     WXWPARAM wParam = 0;
 511     int msg;
 512     switch ( id )
 513     {
 514         case IDM_WINDOWCASCADE:
 515             msg = WM_MDICASCADE;
 516             wParam = MDITILE_SKIPDISABLED;
 517             break;
 518
 519         case IDM_WINDOWTILEHOR:
 520             wParam |= MDITILE_HORIZONTAL;
 521             // fall through
 522
 523         case IDM_WINDOWTILEVERT:
 524             if ( !wParam )
 525                 wParam = MDITILE_VERTICAL;
 526             msg = WM_MDITILE;
 527             wParam |= MDITILE_SKIPDISABLED;
 528             break;
 529
 530         case IDM_WINDOWICONS:
 531             msg = WM_MDIICONARRANGE;
 532             break;
 533
 534         case IDM_WINDOWNEXT:
 535             msg = WM_MDINEXT;
 536             break;
 537
 538         default:
 539             msg = 0;
 540     }
 541
 542     if ( msg )
 543     {
 544         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, 0);
 545
 546         return TRUE;
 547     }
 548
 549     // FIXME VZ: what does this test do??
 550     if (id >= 0xF000)
 551     {
 552         return FALSE; // Get WndProc to call default proc
 553     }
 554
 555     if ( IsMdiCommandId(id) )
 556     {
 557         wxWindowList::Node* node = GetChildren().GetFirst();
 558         while ( node )
 559         {
 560             wxWindow* child = node->GetData();
 561             if ( child->GetHWND() )
 562             {
 563                 long childId = wxGetWindowId(child->GetHWND());
 564                 if (childId == (long)id)
 565                 {
 566                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 567                                    WM_MDIACTIVATE,
 568                                    (WPARAM)child->GetHWND(), 0);
 569                     return TRUE;
 570                 }
 571             }
 572             node = node->GetNext();
 573         }
 574     }
 575     else if ( m_parentFrameActive )
 576     {
 577         return ProcessCommand(id);
 578     }
 579     else if ( m_currentChild )
 580     {
 581         return m_currentChild->HandleCommand(id, cmd, hwnd);
 582     }
 583     else
 584     {
 585         // this shouldn't happen because it means that our messages are being
 586         // lost (they're not sent to the parent frame nor to the children)
 587         wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
 588     }
 589
 590     return FALSE;
 591 }
 592
 593 long wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 594                                         WXWPARAM wParam,
 595                                         WXLPARAM lParam)
 596 {
 597     WXHWND clientWnd;
 598     if ( GetClientWindow() )
 599         clientWnd = GetClientWindow()->GetHWND();
 600     else
 601         clientWnd = 0;
 602
 603     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 604 }
 605
 606 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 607 {
 608     MSG *pMsg = (MSG *)msg;
 609
 610     // first let the current child get it
 611     if ( m_currentChild && m_currentChild->GetHWND() &&
 612          m_currentChild->MSWTranslateMessage(msg) )
 613     {
 614         return TRUE;
 615     }
 616
 617     // then try out accel table (will also check the menu accels)
 618     if ( wxFrame::MSWTranslateMessage(msg) )
 619     {
 620         return TRUE;
 621     }
 622
 623     // finally, check for MDI specific built in accel keys
 624     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 625     {
 626         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 627             return TRUE;
 628     }
 629
 630     return FALSE;
 631 }
 632
 633 // ===========================================================================
 634 // wxMDIChildFrame
 635 // ===========================================================================
 636
 637 void wxMDIChildFrame::Init()
 638 {
 639     m_needsResize = TRUE;
 640 }
 641
 642 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 643                              wxWindowID id,
 644                              const wxString& title,
 645                              const wxPoint& pos,
 646                              const wxSize& size,
 647                              long style,
 648                              const wxString& name)
 649 {
 650   m_defaultIcon = (WXHICON)(wxSTD_MDICHILDFRAME_ICON ? wxSTD_MDICHILDFRAME_ICON
 651                                                      : wxDEFAULT_MDICHILDFRAME_ICON);
 652
 653   SetName(name);
 654   wxWindowBase::Show(TRUE); // MDI child frame starts off shown
 655
 656   if ( id > -1 )
 657     m_windowId = id;
 658   else
 659     m_windowId = (int)NewControlId();
 660
 661   if ( parent )
 662   {
 663       parent->AddChild(this);
 664   }
 665
 666   wxWndHook = this;
 667
 668   int x = pos.x;
 669   int y = pos.y;
 670   int width = size.x;
 671   int height = size.y;
 672
 673   MDICREATESTRUCT mcs;
 674
 675   mcs.szClass = style & wxNO_FULL_REPAINT_ON_RESIZE
 676                     ? wxMDIChildFrameClassNameNoRedraw
 677                     : wxMDIChildFrameClassName;
 678   mcs.szTitle = title;
 679   mcs.hOwner = wxGetInstance();
 680   if (x > -1)
 681       mcs.x = x;
 682   else
 683       mcs.x = CW_USEDEFAULT;
 684
 685   if (y > -1)
 686       mcs.y = y;
 687   else
 688       mcs.y = CW_USEDEFAULT;
 689
 690   if (width > -1)
 691       mcs.cx = width;
 692   else
 693       mcs.cx = CW_USEDEFAULT;
 694
 695   if (height > -1)
 696       mcs.cy = height;
 697   else
 698       mcs.cy = CW_USEDEFAULT;
 699
 700   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN | WS_THICKFRAME | WS_VISIBLE ;
 701   if (style & wxMINIMIZE_BOX)
 702     msflags |= WS_MINIMIZEBOX;
 703   if (style & wxMAXIMIZE_BOX)
 704     msflags |= WS_MAXIMIZEBOX;
 705   if (style & wxTHICK_FRAME)
 706     msflags |= WS_THICKFRAME;
 707   if (style & wxSYSTEM_MENU)
 708     msflags |= WS_SYSMENU;
 709   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 710     msflags |= WS_MINIMIZE;
 711   if (style & wxMAXIMIZE)
 712     msflags |= WS_MAXIMIZE;
 713   if (style & wxCAPTION)
 714     msflags |= WS_CAPTION;
 715
 716   mcs.style = msflags;
 717
 718   mcs.lParam = 0;
 719
 720   m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 721                                  WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 722
 723   wxWndHook = NULL;
 724   wxAssociateWinWithHandle((HWND) GetHWND(), this);
 725
 726   // VZ: what's this? an act of piracy?
 727   //SetWindowLong(GetHwnd(), 0, (long)this);
 728
 729   wxModelessWindows.Append(this);
 730
 731   return TRUE;
 732 }
 733
 734 wxMDIChildFrame::~wxMDIChildFrame()
 735 {
 736     DestroyChildren();
 737
 738     // already delete by DestroyChildren()
 739     m_frameToolBar = NULL;
 740     m_frameStatusBar = NULL;
 741
 742     MSWDestroyWindow();
 743 }
 744
 745 // Set the client size (i.e. leave the calculation of borders etc.
 746 // to wxWindows)
 747 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 748 {
 749   HWND hWnd = GetHwnd();
 750
 751   RECT rect;
 752   ::GetClientRect(hWnd, &rect);
 753
 754   RECT rect2;
 755   GetWindowRect(hWnd, &rect2);
 756
 757   // Find the difference between the entire window (title bar and all)
 758   // and the client area; add this to the new client size to move the
 759   // window
 760   int actual_width = rect2.right - rect2.left - rect.right + width;
 761   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 762
 763   if (GetStatusBar() && GetStatusBar()->IsShown())
 764   {
 765     int sx, sy;
 766     GetStatusBar()->GetSize(&sx, &sy);
 767     actual_height += sy;
 768   }
 769
 770   POINT point;
 771   point.x = rect2.left;
 772   point.y = rect2.top;
 773
 774   // If there's an MDI parent, must subtract the parent's top left corner
 775   // since MoveWindow moves relative to the parent
 776   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 777   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 778
 779   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
 780
 781   wxSizeEvent event(wxSize(width, height), m_windowId);
 782   event.SetEventObject( this );
 783   GetEventHandler()->ProcessEvent(event);
 784 }
 785
 786 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 787 {
 788   RECT rect;
 789   GetWindowRect(GetHwnd(), &rect);
 790   POINT point;
 791   point.x = rect.left;
 792   point.y = rect.top;
 793
 794   // Since we now have the absolute screen coords,
 795   // if there's a parent we must subtract its top left corner
 796   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 797   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 798
 799   *x = point.x;
 800   *y = point.y;
 801 }
 802
 803 void wxMDIChildFrame::InternalSetMenuBar()
 804 {
 805     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 806
 807     // HMENU subMenu = GetSubMenu((HMENU)parent->GetWindowMenu(), 0);
 808     HMENU subMenu = (HMENU) 0;
 809     if (parent->GetWindowMenu())
 810         subMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
 811
 812     InsertWindowMenu(parent->GetClientWindow(), m_hMenu, subMenu);
 813
 814     parent->m_parentFrameActive = FALSE;
 815 }
 816
 817 // ---------------------------------------------------------------------------
 818 // MDI operations
 819 // ---------------------------------------------------------------------------
 820
 821 void wxMDIChildFrame::Maximize(bool maximize)
 822 {
 823     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 824     if ( parent && parent->GetClientWindow() )
 825     {
 826         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 827                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
 828                       (WPARAM)GetHwnd(), 0);
 829     }
 830 }
 831
 832 void wxMDIChildFrame::Restore()
 833 {
 834     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 835     if ( parent && parent->GetClientWindow() )
 836     {
 837         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
 838                       (WPARAM) GetHwnd(), 0);
 839     }
 840 }
 841
 842 void wxMDIChildFrame::Activate()
 843 {
 844     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 845     if ( parent && parent->GetClientWindow() )
 846     {
 847         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
 848                       (WPARAM) GetHwnd(), 0);
 849     }
 850 }
 851
 852 // ---------------------------------------------------------------------------
 853 // MDI window proc and message handlers
 854 // ---------------------------------------------------------------------------
 855
 856 long wxMDIChildFrame::MSWWindowProc(WXUINT message,
 857                                     WXWPARAM wParam,
 858                                     WXLPARAM lParam)
 859 {
 860     long rc = 0;
 861     bool processed = FALSE;
 862
 863     switch ( message )
 864     {
 865         case WM_COMMAND:
 866             {
 867                 WORD id, cmd;
 868                 WXHWND hwnd;
 869                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 870                               &id, &hwnd, &cmd);
 871
 872                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 873             }
 874             break;
 875
 876         case WM_GETMINMAXINFO:
 877             processed = HandleGetMinMaxInfo((MINMAXINFO *)lParam);
 878             break;
 879
 880         case WM_MDIACTIVATE:
 881             {
 882                 WXWORD act;
 883                 WXHWND hwndAct, hwndDeact;
 884                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
 885
 886                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
 887             }
 888             // fall through
 889
 890         case WM_MOVE:
 891             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
 892             // scrollbars if necessary
 893
 894             // fall through
 895
 896         case WM_SIZE:
 897             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
 898             // things happen
 899             MSWDefWindowProc(message, wParam, lParam);
 900             break;
 901
 902         case WM_SYSCOMMAND:
 903             // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
 904             // the message (the base class version does not)
 905             return MSWDefWindowProc(message, wParam, lParam);
 906
 907         case WM_WINDOWPOSCHANGING:
 908             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
 909             break;
 910     }
 911
 912     if ( !processed )
 913         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 914
 915     return rc;
 916 }
 917
 918 bool wxMDIChildFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 919 {
 920     // In case it's e.g. a toolbar.
 921     if ( hwnd )
 922     {
 923         wxWindow *win = wxFindWinFromHandle(hwnd);
 924         if (win)
 925             return win->MSWCommand(cmd, id);
 926     }
 927
 928     if (wxCurrentPopupMenu)
 929     {
 930         wxMenu *popupMenu = wxCurrentPopupMenu;
 931         wxCurrentPopupMenu = NULL;
 932         if (popupMenu->MSWCommand(cmd, id))
 933             return TRUE;
 934     }
 935
 936     bool processed;
 937     if (GetMenuBar() && GetMenuBar()->FindItem(id))
 938     {
 939         processed = ProcessCommand(id);
 940     }
 941     else
 942     {
 943         processed = FALSE;
 944     }
 945
 946     return processed;
 947 }
 948
 949 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
 950                                         WXHWND hwndAct,
 951                                         WXHWND hwndDeact)
 952 {
 953     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 954
 955     HMENU menuToSet = 0;
 956
 957     bool activated;
 958
 959     if ( m_hWnd == hwndAct )
 960     {
 961         activated = TRUE;
 962         parent->m_currentChild = this;
 963
 964         HMENU child_menu = (HMENU)GetWinMenu();
 965         if ( child_menu )
 966         {
 967             parent->m_parentFrameActive = FALSE;
 968
 969             menuToSet = child_menu;
 970         }
 971     }
 972     else if ( m_hWnd == hwndDeact )
 973     {
 974         wxASSERT_MSG( parent->m_currentChild == this,
 975                       wxT("can't deactivate MDI child which wasn't active!") );
 976
 977         activated = FALSE;
 978         parent->m_currentChild = NULL;
 979
 980         HMENU parent_menu = (HMENU)parent->GetWinMenu();
 981
 982         // activate the the parent menu only when there is no other child
 983         // that has been activated
 984         if ( parent_menu && !hwndAct )
 985         {
 986             parent->m_parentFrameActive = TRUE;
 987
 988             menuToSet = parent_menu;
 989         }
 990     }
 991     else
 992     {
 993         // we have nothing to do with it
 994         return FALSE;
 995     }
 996
 997     if ( menuToSet )
 998     {
 999         HMENU subMenu = (HMENU) 0;
1000         if (parent->GetWindowMenu())
1001             subMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
1002
1003         MDISetMenu(parent->GetClientWindow(), menuToSet, subMenu);
1004     }
1005
1006     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
1007     event.SetEventObject( this );
1008
1009     ResetWindowStyle((void *)NULL);
1010
1011     return GetEventHandler()->ProcessEvent(event);
1012 }
1013
1014 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
1015 {
1016     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1017 #if defined(__WIN95__)
1018     if (!(lpPos->flags & SWP_NOSIZE))
1019     {
1020         RECT rectClient;
1021         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1022         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1023         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1024         {
1025             ::AdjustWindowRectEx(&rectClient, dwStyle, FALSE, dwExStyle);
1026             lpPos->x = rectClient.left;
1027             lpPos->y = rectClient.top;
1028             lpPos->cx = rectClient.right - rectClient.left;
1029             lpPos->cy = rectClient.bottom - rectClient.top;
1030         }
1031         wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1032         if (pFrameWnd && pFrameWnd->GetToolBar() && pFrameWnd->GetToolBar()->IsShown())
1033         {
1034             pFrameWnd->GetToolBar()->Refresh();
1035         }
1036     }
1037 #endif // Win95
1038
1039     return FALSE;
1040 }
1041
1042 bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo)
1043 {
1044     MINMAXINFO *info = (MINMAXINFO *)mmInfo;
1045
1046     // let the default window proc calculate the size of MDI children
1047     // frames because it is based on the size of the MDI client window,
1048     // not on the values specified in wxWindow m_max variables
1049     bool processed = MSWDefWindowProc(WM_GETMINMAXINFO, 0, (LPARAM)mmInfo) != 0;
1050
1051     // but allow GetSizeHints() to set the min size
1052     if ( m_minWidth != -1 )
1053     {
1054         info->ptMinTrackSize.x = m_minWidth;
1055
1056         processed = TRUE;
1057     }
1058
1059     if ( m_minHeight != -1 )
1060     {
1061         info->ptMinTrackSize.y = m_minHeight;
1062
1063         processed = TRUE;
1064     }
1065
1066     return TRUE;
1067 }
1068
1069 // ---------------------------------------------------------------------------
1070 // MDI specific message translation/preprocessing
1071 // ---------------------------------------------------------------------------
1072
1073 long wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXUINT wParam, WXLPARAM lParam)
1074 {
1075     return DefMDIChildProc(GetHwnd(),
1076                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1077 }
1078
1079 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1080 {
1081     return wxFrame::MSWTranslateMessage(msg);
1082 }
1083
1084 // ---------------------------------------------------------------------------
1085 // misc
1086 // ---------------------------------------------------------------------------
1087
1088 void wxMDIChildFrame::MSWDestroyWindow()
1089 {
1090     MSWDetachWindowMenu();
1091     invalidHandle = GetHwnd();
1092
1093     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1094
1095     // Must make sure this handle is invalidated (set to NULL) since all sorts
1096     // of things could happen after the child client is destroyed, but before
1097     // the wxFrame is destroyed.
1098
1099     HWND oldHandle = (HWND)GetHWND();
1100     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1101                 (WPARAM)oldHandle, 0);
1102
1103     if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
1104         ResetWindowStyle((void*) NULL);
1105
1106     invalidHandle = 0;
1107
1108     if (m_hMenu)
1109     {
1110         ::DestroyMenu((HMENU) m_hMenu);
1111         m_hMenu = 0;
1112     }
1113     wxRemoveHandleAssociation(this);
1114     m_hWnd = 0;
1115 }
1116
1117 // Change the client window's extended style so we don't get a client edge
1118 // style when a child is maximised (a double border looks silly.)
1119 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1120 {
1121 #if defined(__WIN95__)
1122     RECT *rect = (RECT *)vrect;
1123     wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1124     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1125     if (!pChild || (pChild == this))
1126     {
1127         HWND hwndClient = GetWinHwnd(pFrameWnd->GetClientWindow());
1128         DWORD dwStyle = ::GetWindowLong(hwndClient, GWL_EXSTYLE);
1129
1130         // we want to test whether there is a maximized child, so just set
1131         // dwThisStyle to 0 if there is no child at all
1132         DWORD dwThisStyle = pChild
1133             ? ::GetWindowLong(GetWinHwnd(pChild), GWL_STYLE) : 0;
1134         DWORD dwNewStyle = dwStyle;
1135         if ( dwThisStyle & WS_MAXIMIZE )
1136             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1137         else
1138             dwNewStyle |= WS_EX_CLIENTEDGE;
1139
1140         if (dwStyle != dwNewStyle)
1141         {
1142             // force update of everything
1143             ::RedrawWindow(hwndClient, NULL, NULL,
1144                            RDW_INVALIDATE | RDW_ALLCHILDREN);
1145             ::SetWindowLong(hwndClient, GWL_EXSTYLE, dwNewStyle);
1146             ::SetWindowPos(hwndClient, NULL, 0, 0, 0, 0,
1147                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1148                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1149                            SWP_NOCOPYBITS);
1150             if (rect)
1151                 ::GetClientRect(hwndClient, rect);
1152
1153             return TRUE;
1154         }
1155     }
1156 #endif // Win95
1157
1158     return FALSE;
1159 }
1160
1161 // ===========================================================================
1162 // wxMDIClientWindow: the window of predefined (by Windows) class which
1163 // contains the child frames
1164 // ===========================================================================
1165
1166 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1167 {
1168     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE);
1169
1170     CLIENTCREATESTRUCT ccs;
1171     m_windowStyle = style;
1172     m_parent = parent;
1173
1174     ccs.hWindowMenu = (HMENU) 0;
1175     if (parent->GetWindowMenu())
1176         ccs.hWindowMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
1177     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1178
1179     DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD |
1180                     WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
1181
1182     if ( style & wxHSCROLL )
1183         msStyle |= WS_HSCROLL;
1184     if ( style & wxVSCROLL )
1185         msStyle |= WS_VSCROLL;
1186
1187 #if defined(__WIN95__)
1188     DWORD exStyle = WS_EX_CLIENTEDGE;
1189 #else
1190     DWORD exStyle = 0;
1191 #endif
1192
1193     wxWndHook = this;
1194     m_hWnd = (WXHWND)::CreateWindowEx
1195                        (
1196                         exStyle,
1197                         wxT("MDICLIENT"),
1198                         NULL,
1199                         msStyle,
1200                         0, 0, 0, 0,
1201                         GetWinHwnd(parent),
1202                         NULL,
1203                         wxGetInstance(),
1204                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1205     if ( !m_hWnd )
1206     {
1207         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1208
1209         return FALSE;
1210     }
1211
1212     SubclassWin(m_hWnd);
1213     wxWndHook = NULL;
1214
1215     return TRUE;
1216 }
1217
1218 // Explicitly call default scroll behaviour
1219 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1220 {
1221     // Note: for client windows, the scroll position is not set in
1222     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1223     // scroll position we're at.
1224     // This makes it hard to paint patterns or bitmaps in the background,
1225     // and have the client area scrollable as well.
1226
1227     if ( event.GetOrientation() == wxHORIZONTAL )
1228         m_scrollX = event.GetPosition(); // Always returns zero!
1229     else
1230         m_scrollY = event.GetPosition(); // Always returns zero!
1231
1232     event.Skip();
1233 }
1234
1235 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1236 {
1237     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1238     // client area, you can end up with a non-refreshed portion in the client window
1239     // (see OGL studio sample). So check if the position is changed and if so,
1240     // redraw the MDI child frames.
1241
1242     wxPoint oldPos = GetPosition();
1243
1244     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
1245
1246     wxPoint newPos = GetPosition();
1247
1248     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1249     {
1250         if (GetParent())
1251         {
1252             wxNode* node = GetParent()->GetChildren().First();
1253             while (node)
1254             {
1255                 wxWindow* child = (wxWindow*) node->Data();
1256                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1257                 {
1258                     HWND hWnd = (HWND) child->GetHWND();
1259                    ::RedrawWindow(hWnd, NULL, NULL, RDW_FRAME|RDW_ALLCHILDREN|RDW_INVALIDATE );
1260                 }
1261                 node = node->Next();
1262             }
1263         }
1264     }
1265 }
1266
1267 void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
1268 {
1269     // MDI child frames get their WM_SIZE when they're constructed but at this
1270     // moment they don't have any children yet so all child windows will be
1271     // positioned incorrectly when they are added later - to fix this, we
1272     // generate an artificial size event here
1273     if ( m_needsResize )
1274     {
1275         m_needsResize = FALSE; // avoid any possibility of recursion
1276
1277         SendSizeEvent();
1278     }
1279
1280     event.Skip();
1281 }
1282
1283 // ---------------------------------------------------------------------------
1284 // non member functions
1285 // ---------------------------------------------------------------------------
1286
1287 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1288 {
1289     ::SendMessage(GetWinHwnd(win), WM_MDISETMENU,
1290 #ifdef __WIN32__
1291                   (WPARAM)hmenuFrame, (LPARAM)hmenuWindow
1292 #else
1293                   0, MAKELPARAM(hmenuFrame, hmenuWindow)
1294 #endif
1295                  );
1296
1297     // update menu bar of the parent window
1298     wxWindow *parent = win->GetParent();
1299     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1300
1301 #ifndef __WIN16__
1302     ::SendMessage(GetWinHwnd(win), WM_MDIREFRESHMENU, 0, 0L);
1303 #endif
1304
1305     ::DrawMenuBar(GetWinHwnd(parent));
1306 }
1307
1308 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
1309 {
1310     // Try to insert Window menu in front of Help, otherwise append it.
1311     HMENU hmenu = (HMENU)menu;
1312
1313     if (subMenu)
1314     {
1315     int N = GetMenuItemCount(hmenu);
1316     bool success = FALSE;
1317     for ( int i = 0; i < N; i++ )
1318     {
1319         wxChar buf[256];
1320         int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1321         if ( chars == 0 )
1322         {
1323             wxLogLastError(wxT("GetMenuString"));
1324
1325             continue;
1326         }
1327
1328         if ( wxStripMenuCodes(wxString(buf)).IsSameAs(_("Help")) )
1329         {
1330             success = TRUE;
1331             ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1332                          (UINT)subMenu, _("&Window"));
1333             break;
1334         }
1335     }
1336
1337     if ( !success )
1338     {
1339         ::AppendMenu(hmenu, MF_POPUP, (UINT)subMenu, _("&Window"));
1340     }
1341     }
1342
1343     MDISetMenu(win, hmenu, subMenu);
1344 }
1345
1346 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu)
1347 {
1348     // Try to insert Window menu in front of Help, otherwise append it.
1349     HMENU hmenu = (HMENU)menu;
1350     int N = GetMenuItemCount(hmenu);
1351     for ( int i = 0; i < N; i++ )
1352     {
1353         wxChar buf[256];
1354         int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1355         if ( chars == 0 )
1356         {
1357             wxLogLastError(wxT("GetMenuString"));
1358
1359             continue;
1360         }
1361
1362         if ( wxStripMenuCodes(wxString(buf)).IsSameAs(_("Window")) )
1363         {
1364             ::RemoveMenu(hmenu, i, MF_BYPOSITION);
1365             break;
1366         }
1367     }
1368
1369     // Does passing 0 for the window menu really work with WM_MDISETMENU?
1370     MDISetMenu(win, hmenu, 0);
1371 }
1372
1373 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1374                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1375 {
1376 #ifdef __WIN32__
1377     *activate = TRUE;
1378     *hwndAct = (WXHWND)lParam;
1379     *hwndDeact = (WXHWND)wParam;
1380 #else // Win16
1381     *activate = (WXWORD)wParam;
1382     *hwndAct = (WXHWND)LOWORD(lParam);
1383     *hwndDeact = (WXHWND)HIWORD(lParam);
1384 #endif // Win32/Win16
1385 }