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 #if wxUSE_MDI_ARCHITECTURE && !defined(__WXUNIVERSAL__)
  47
  48 #include "wx/mdi.h"
  49 #include "wx/msw/private.h"
  50
  51 #if wxUSE_STATUSBAR && wxUSE_NATIVE_STATUSBAR
  52     #include "wx/msw/statbr95.h"
  53 #endif
  54
  55 #if wxUSE_TOOLBAR
  56     #include "wx/toolbar.h"
  57 #endif // wxUSE_TOOLBAR
  58
  59 #include <string.h>
  60
  61 // ---------------------------------------------------------------------------
  62 // global variables
  63 // ---------------------------------------------------------------------------
  64
  65 extern wxWindowList wxModelessWindows;      // from dialog.cpp
  66 extern wxMenu *wxCurrentPopupMenu;
  67
  68 extern const wxChar *wxMDIFrameClassName;   // from app.cpp
  69 extern const wxChar *wxMDIChildFrameClassName;
  70 extern const wxChar *wxMDIChildFrameClassNameNoRedraw;
  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 static const int IDM_WINDOWPREV = 4006;
  88
  89 // This range gives a maximum of 500 MDI children. Should be enough :-)
  90 static const int wxFIRST_MDI_CHILD = 4100;
  91 static const int wxLAST_MDI_CHILD = 4600;
  92
  93 // Status border dimensions
  94 static const int wxTHICK_LINE_BORDER = 3;
  95 static const int wxTHICK_LINE_WIDTH  = 1;
  96
  97 // ---------------------------------------------------------------------------
  98 // private functions
  99 // ---------------------------------------------------------------------------
 100
 101 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
 102 // of the parent of win (which is supposed to be the MDI client window)
 103 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
 104
 105 // insert the window menu (subMenu) into menu just before "Help" submenu or at
 106 // the very end if not found
 107 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
 108
 109 // Remove the window menu
 110 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu);
 111
 112 // is this an id of an MDI child?
 113 inline bool IsMdiCommandId(int id)
 114 {
 115     return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
 116 }
 117
 118 // unpack the parameters of WM_MDIACTIVATE message
 119 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
 120                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
 121
 122 // return the HMENU of the MDI menu
 123 static inline HMENU GetMDIWindowMenu(wxMDIParentFrame *frame)
 124 {
 125     wxMenu *menu = frame->GetWindowMenu();
 126     return menu ? GetHmenuOf(menu) : 0;
 127 }
 128
 129 // ===========================================================================
 130 // implementation
 131 // ===========================================================================
 132
 133 // ---------------------------------------------------------------------------
 134 // wxWin macros
 135 // ---------------------------------------------------------------------------
 136
 137 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 138 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 139 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 140
 141 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 142     EVT_SIZE(wxMDIParentFrame::OnSize)
 143     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 144 END_EVENT_TABLE()
 145
 146 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 147     EVT_IDLE(wxMDIChildFrame::OnIdle)
 148 END_EVENT_TABLE()
 149
 150 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 151     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 152 END_EVENT_TABLE()
 153
 154 // ===========================================================================
 155 // wxMDIParentFrame: the frame which contains the client window which manages
 156 // the children
 157 // ===========================================================================
 158
 159 wxMDIParentFrame::wxMDIParentFrame()
 160 {
 161     m_clientWindow = NULL;
 162     m_currentChild = NULL;
 163     m_windowMenu = (wxMenu*) NULL;
 164     m_parentFrameActive = true;
 165 }
 166
 167 bool wxMDIParentFrame::Create(wxWindow *parent,
 168                               wxWindowID id,
 169                               const wxString& title,
 170                               const wxPoint& pos,
 171                               const wxSize& size,
 172                               long style,
 173                               const wxString& name)
 174 {
 175   m_clientWindow = NULL;
 176   m_currentChild = NULL;
 177
 178   // this style can be used to prevent a window from having the standard MDI
 179   // "Window" menu
 180   if ( style & wxFRAME_NO_WINDOW_MENU )
 181   {
 182       m_windowMenu = (wxMenu *)NULL;
 183   }
 184   else // normal case: we have the window menu, so construct it
 185   {
 186       m_windowMenu = new wxMenu;
 187
 188       m_windowMenu->Append(IDM_WINDOWCASCADE, _("&Cascade"));
 189       m_windowMenu->Append(IDM_WINDOWTILEHOR, _("Tile &Horizontally"));
 190       m_windowMenu->Append(IDM_WINDOWTILEVERT, _("Tile &Vertically"));
 191       m_windowMenu->AppendSeparator();
 192       m_windowMenu->Append(IDM_WINDOWICONS, _("&Arrange Icons"));
 193       m_windowMenu->Append(IDM_WINDOWNEXT, _("&Next"));
 194       m_windowMenu->Append(IDM_WINDOWPREV, _("&Previous"));
 195   }
 196
 197   m_parentFrameActive = true;
 198
 199   if (!parent)
 200     wxTopLevelWindows.Append(this);
 201
 202   SetName(name);
 203   m_windowStyle = style;
 204
 205   if ( parent )
 206       parent->AddChild(this);
 207
 208   if ( id > -1 )
 209     m_windowId = id;
 210   else
 211     m_windowId = NewControlId();
 212
 213   WXDWORD exflags;
 214   WXDWORD msflags = MSWGetCreateWindowFlags(&exflags);
 215
 216   if ( !wxWindow::MSWCreate(wxMDIFrameClassName,
 217                             title,
 218                             pos, size,
 219                             msflags,
 220                             exflags) )
 221   {
 222       return false;
 223   }
 224
 225   wxModelessWindows.Append(this);
 226
 227   // unlike (almost?) all other windows, frames are created hidden
 228   m_isShown = false;
 229
 230   return true;
 231 }
 232
 233 wxMDIParentFrame::~wxMDIParentFrame()
 234 {
 235     DestroyChildren();
 236
 237     // already delete by DestroyChildren()
 238     m_frameToolBar = NULL;
 239     m_frameStatusBar = NULL;
 240
 241     if (m_windowMenu)
 242     {
 243         delete m_windowMenu;
 244         m_windowMenu = (wxMenu*) NULL;
 245     }
 246
 247     // the MDI frame menubar is not automatically deleted by Windows unlike for
 248     // the normal frames
 249     if ( m_hMenu )
 250     {
 251         ::DestroyMenu((HMENU)m_hMenu);
 252         m_hMenu = (WXHMENU)NULL;
 253     }
 254
 255     if ( m_clientWindow )
 256     {
 257         if ( m_clientWindow->MSWGetOldWndProc() )
 258             m_clientWindow->UnsubclassWin();
 259
 260         m_clientWindow->SetHWND(0);
 261         delete m_clientWindow;
 262     }
 263 }
 264
 265 #if wxUSE_MENUS_NATIVE
 266
 267 void wxMDIParentFrame::InternalSetMenuBar()
 268 {
 269     m_parentFrameActive = true;
 270
 271     InsertWindowMenu(GetClientWindow(), m_hMenu, GetMDIWindowMenu(this));
 272 }
 273
 274 #endif // wxUSE_MENUS_NATIVE
 275
 276 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 277 {
 278     if (m_windowMenu)
 279     {
 280         if (GetMenuBar())
 281         {
 282             // Remove old window menu
 283             RemoveWindowMenu(GetClientWindow(), m_hMenu);
 284         }
 285
 286         delete m_windowMenu;
 287         m_windowMenu = (wxMenu*) NULL;
 288     }
 289
 290     if (menu)
 291     {
 292         m_windowMenu = menu;
 293         if (GetMenuBar())
 294         {
 295             InsertWindowMenu(GetClientWindow(), m_hMenu,
 296                              GetHmenuOf(m_windowMenu));
 297         }
 298     }
 299 }
 300
 301 void wxMDIParentFrame::OnSize(wxSizeEvent&)
 302 {
 303     if ( GetClientWindow() )
 304     {
 305         int width, height;
 306         GetClientSize(&width, &height);
 307
 308         GetClientWindow()->SetSize(0, 0, width, height);
 309     }
 310 }
 311
 312 // Returns the active MDI child window
 313 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 314 {
 315     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 316                                     WM_MDIGETACTIVE, 0, 0L);
 317     if ( hWnd == 0 )
 318         return NULL;
 319     else
 320         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 321 }
 322
 323 // Create the client window class (don't Create the window, just return a new
 324 // class)
 325 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 326 {
 327     return new wxMDIClientWindow;
 328 }
 329
 330 // Responds to colour changes, and passes event on to children.
 331 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 332 {
 333     if ( m_clientWindow )
 334     {
 335         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE));
 336         m_clientWindow->Refresh();
 337     }
 338
 339     event.Skip();
 340 }
 341
 342 WXHICON wxMDIParentFrame::GetDefaultIcon() const
 343 {
 344     return (WXHICON)(wxSTD_MDIPARENTFRAME_ICON ? wxSTD_MDIPARENTFRAME_ICON
 345                                                : wxDEFAULT_MDIPARENTFRAME_ICON);
 346 }
 347
 348 // ---------------------------------------------------------------------------
 349 // MDI operations
 350 // ---------------------------------------------------------------------------
 351
 352 void wxMDIParentFrame::Cascade()
 353 {
 354     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 355 }
 356
 357 // TODO: add a direction argument (hor/vert)
 358 void wxMDIParentFrame::Tile()
 359 {
 360     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE, MDITILE_HORIZONTAL, 0);
 361 }
 362
 363 void wxMDIParentFrame::ArrangeIcons()
 364 {
 365     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 366 }
 367
 368 void wxMDIParentFrame::ActivateNext()
 369 {
 370     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 371 }
 372
 373 void wxMDIParentFrame::ActivatePrevious()
 374 {
 375     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 376 }
 377
 378 // ---------------------------------------------------------------------------
 379 // the MDI parent frame window proc
 380 // ---------------------------------------------------------------------------
 381
 382 long wxMDIParentFrame::MSWWindowProc(WXUINT message,
 383                                      WXWPARAM wParam,
 384                                      WXLPARAM lParam)
 385 {
 386     long rc = 0;
 387     bool processed = false;
 388
 389     switch ( message )
 390     {
 391         case WM_ACTIVATE:
 392             {
 393                 WXWORD state, minimized;
 394                 WXHWND hwnd;
 395                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 396
 397                 processed = HandleActivate(state, minimized != 0, hwnd);
 398             }
 399             break;
 400
 401         case WM_COMMAND:
 402             {
 403                 WXWORD id, cmd;
 404                 WXHWND hwnd;
 405                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 406
 407                 (void)HandleCommand(id, cmd, hwnd);
 408
 409                 // even if the frame didn't process it, there is no need to try it
 410                 // once again (i.e. call wxFrame::HandleCommand()) - we just dud it,
 411                 // so pretend we processed the message anyhow
 412                 processed = true;
 413             }
 414
 415             // always pass this message DefFrameProc(), otherwise MDI menu
 416             // commands (and sys commands - more surprizingly!) won't work
 417             MSWDefWindowProc(message, wParam, lParam);
 418             break;
 419
 420         case WM_CREATE:
 421             m_clientWindow = OnCreateClient();
 422             // Uses own style for client style
 423             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 424             {
 425                 wxLogMessage(_("Failed to create MDI parent frame."));
 426
 427                 rc = -1;
 428             }
 429
 430             processed = true;
 431             break;
 432
 433         case WM_ERASEBKGND:
 434             processed = true;
 435
 436             // we erase background ourselves
 437             rc = true;
 438             break;
 439
 440         case WM_MENUSELECT:
 441             {
 442                 WXWORD item, flags;
 443                 WXHMENU hmenu;
 444                 UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
 445
 446                 if ( m_parentFrameActive )
 447                 {
 448                     processed = HandleMenuSelect(item, flags, hmenu);
 449                 }
 450                 else if (m_currentChild)
 451                 {
 452                     processed = m_currentChild->
 453                         HandleMenuSelect(item, flags, hmenu);
 454                 }
 455             }
 456             break;
 457
 458         case WM_SIZE:
 459             // as we don't (usually) resize the MDI client to exactly fit the
 460             // client area (we put it below the toolbar, above statusbar &c),
 461             // we should not pass this one to DefFrameProc
 462             break;
 463     }
 464
 465     if ( !processed )
 466         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 467
 468     return rc;
 469 }
 470
 471 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 472 {
 473     bool processed = false;
 474
 475     if ( wxWindow::HandleActivate(state, minimized, activate) )
 476     {
 477         // already processed
 478         processed = true;
 479     }
 480
 481     // If this window is an MDI parent, we must also send an OnActivate message
 482     // to the current child.
 483     if ( (m_currentChild != NULL) &&
 484          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 485     {
 486         wxActivateEvent event(wxEVT_ACTIVATE, true, m_currentChild->GetId());
 487         event.SetEventObject( m_currentChild );
 488         if ( m_currentChild->GetEventHandler()->ProcessEvent(event) )
 489             processed = true;
 490     }
 491
 492     return processed;
 493 }
 494
 495 bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 496 {
 497     // In case it's e.g. a toolbar.
 498     if ( hwnd )
 499     {
 500         wxWindow *win = wxFindWinFromHandle(hwnd);
 501         if ( win )
 502             return win->MSWCommand(cmd, id);
 503     }
 504
 505     // is it one of standard MDI commands?
 506     WXWPARAM wParam = 0;
 507     WXLPARAM lParam = 0;
 508     int msg;
 509     switch ( id )
 510     {
 511         case IDM_WINDOWCASCADE:
 512             msg = WM_MDICASCADE;
 513             wParam = MDITILE_SKIPDISABLED;
 514             break;
 515
 516         case IDM_WINDOWTILEHOR:
 517             wParam |= MDITILE_HORIZONTAL;
 518             // fall through
 519
 520         case IDM_WINDOWTILEVERT:
 521             if ( !wParam )
 522                 wParam = MDITILE_VERTICAL;
 523             msg = WM_MDITILE;
 524             wParam |= MDITILE_SKIPDISABLED;
 525             break;
 526
 527         case IDM_WINDOWICONS:
 528             msg = WM_MDIICONARRANGE;
 529             break;
 530
 531         case IDM_WINDOWNEXT:
 532             msg = WM_MDINEXT;
 533             lParam = 0;         // next child
 534             break;
 535
 536         case IDM_WINDOWPREV:
 537             msg = WM_MDINEXT;
 538             lParam = 1;         // previous child
 539             break;
 540
 541         default:
 542             msg = 0;
 543     }
 544
 545     if ( msg )
 546     {
 547         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, lParam);
 548
 549         return true;
 550     }
 551
 552     // FIXME VZ: what does this test do??
 553     if (id >= 0xF000)
 554     {
 555         return false; // Get WndProc to call default proc
 556     }
 557
 558     if ( IsMdiCommandId(id) )
 559     {
 560         wxWindowList::Node *node = GetChildren().GetFirst();
 561         while ( node )
 562         {
 563             wxWindow *child = node->GetData();
 564             if ( child->GetHWND() )
 565             {
 566                 long childId = wxGetWindowId(child->GetHWND());
 567                 if (childId == (long)id)
 568                 {
 569                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 570                                    WM_MDIACTIVATE,
 571                                    (WPARAM)child->GetHWND(), 0);
 572                     return true;
 573                 }
 574             }
 575             node = node->GetNext();
 576         }
 577     }
 578     else if ( m_parentFrameActive )
 579     {
 580         return ProcessCommand(id);
 581     }
 582     else if ( m_currentChild )
 583     {
 584         return m_currentChild->HandleCommand(id, cmd, hwnd);
 585     }
 586     else
 587     {
 588         // this shouldn't happen because it means that our messages are being
 589         // lost (they're not sent to the parent frame nor to the children)
 590         wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
 591     }
 592
 593     return false;
 594 }
 595
 596 long wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 597                                         WXWPARAM wParam,
 598                                         WXLPARAM lParam)
 599 {
 600     WXHWND clientWnd;
 601     if ( GetClientWindow() )
 602         clientWnd = GetClientWindow()->GetHWND();
 603     else
 604         clientWnd = 0;
 605
 606     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 607 }
 608
 609 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 610 {
 611     MSG *pMsg = (MSG *)msg;
 612
 613     // first let the current child get it
 614     if ( m_currentChild && m_currentChild->GetHWND() &&
 615          m_currentChild->MSWTranslateMessage(msg) )
 616     {
 617         return true;
 618     }
 619
 620     // then try out accel table (will also check the menu accels)
 621     if ( wxFrame::MSWTranslateMessage(msg) )
 622     {
 623         return true;
 624     }
 625
 626     // finally, check for MDI specific built in accel keys
 627     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 628     {
 629         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 630             return true;
 631     }
 632
 633     return false;
 634 }
 635
 636 // ===========================================================================
 637 // wxMDIChildFrame
 638 // ===========================================================================
 639
 640 void wxMDIChildFrame::Init()
 641 {
 642     m_needsResize = true;
 643 }
 644
 645 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 646                              wxWindowID id,
 647                              const wxString& title,
 648                              const wxPoint& pos,
 649                              const wxSize& size,
 650                              long style,
 651                              const wxString& name)
 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   int x = pos.x;
 667   int y = pos.y;
 668   int width = size.x;
 669   int height = size.y;
 670
 671   MDICREATESTRUCT mcs;
 672
 673   mcs.szClass = style & wxNO_FULL_REPAINT_ON_RESIZE
 674                     ? wxMDIChildFrameClassNameNoRedraw
 675                     : wxMDIChildFrameClassName;
 676   mcs.szTitle = title;
 677   mcs.hOwner = wxGetInstance();
 678   if (x > -1)
 679       mcs.x = x;
 680   else
 681       mcs.x = CW_USEDEFAULT;
 682
 683   if (y > -1)
 684       mcs.y = y;
 685   else
 686       mcs.y = CW_USEDEFAULT;
 687
 688   if (width > -1)
 689       mcs.cx = width;
 690   else
 691       mcs.cx = CW_USEDEFAULT;
 692
 693   if (height > -1)
 694       mcs.cy = height;
 695   else
 696       mcs.cy = CW_USEDEFAULT;
 697
 698   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN | WS_THICKFRAME | WS_VISIBLE ;
 699   if (style & wxMINIMIZE_BOX)
 700     msflags |= WS_MINIMIZEBOX;
 701   if (style & wxMAXIMIZE_BOX)
 702     msflags |= WS_MAXIMIZEBOX;
 703   if (style & wxTHICK_FRAME)
 704     msflags |= WS_THICKFRAME;
 705   if (style & wxSYSTEM_MENU)
 706     msflags |= WS_SYSMENU;
 707   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 708     msflags |= WS_MINIMIZE;
 709   if (style & wxMAXIMIZE)
 710     msflags |= WS_MAXIMIZE;
 711   if (style & wxCAPTION)
 712     msflags |= WS_CAPTION;
 713
 714   mcs.style = msflags;
 715
 716   mcs.lParam = 0;
 717
 718   wxWindowCreationHook hook(this);
 719
 720   m_hWnd = (WXHWND)::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 721                                  WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 722
 723   wxAssociateWinWithHandle((HWND) GetHWND(), this);
 724
 725   wxModelessWindows.Append(this);
 726
 727   return true;
 728 }
 729
 730 wxMDIChildFrame::~wxMDIChildFrame()
 731 {
 732     DestroyChildren();
 733
 734     // already deleted by DestroyChildren()
 735     m_frameToolBar = NULL;
 736     m_frameStatusBar = NULL;
 737
 738     RemoveWindowMenu(NULL, m_hMenu);
 739
 740     MSWDestroyWindow();
 741 }
 742
 743 // Set the client size (i.e. leave the calculation of borders etc.
 744 // to wxWindows)
 745 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 746 {
 747   HWND hWnd = GetHwnd();
 748
 749   RECT rect;
 750   ::GetClientRect(hWnd, &rect);
 751
 752   RECT rect2;
 753   GetWindowRect(hWnd, &rect2);
 754
 755   // Find the difference between the entire window (title bar and all)
 756   // and the client area; add this to the new client size to move the
 757   // window
 758   int actual_width = rect2.right - rect2.left - rect.right + width;
 759   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 760
 761   if (GetStatusBar() && GetStatusBar()->IsShown())
 762   {
 763     int sx, sy;
 764     GetStatusBar()->GetSize(&sx, &sy);
 765     actual_height += sy;
 766   }
 767
 768   POINT point;
 769   point.x = rect2.left;
 770   point.y = rect2.top;
 771
 772   // If there's an MDI parent, must subtract the parent's top left corner
 773   // since MoveWindow moves relative to the parent
 774   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 775   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 776
 777   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)true);
 778
 779   wxSizeEvent event(wxSize(width, height), m_windowId);
 780   event.SetEventObject( this );
 781   GetEventHandler()->ProcessEvent(event);
 782 }
 783
 784 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 785 {
 786   RECT rect;
 787   GetWindowRect(GetHwnd(), &rect);
 788   POINT point;
 789   point.x = rect.left;
 790   point.y = rect.top;
 791
 792   // Since we now have the absolute screen coords,
 793   // if there's a parent we must subtract its top left corner
 794   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 795   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 796
 797   *x = point.x;
 798   *y = point.y;
 799 }
 800
 801 void wxMDIChildFrame::InternalSetMenuBar()
 802 {
 803     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 804
 805     InsertWindowMenu(parent->GetClientWindow(),
 806                      m_hMenu, GetMDIWindowMenu(parent));
 807
 808     parent->m_parentFrameActive = false;
 809 }
 810
 811 WXHICON wxMDIChildFrame::GetDefaultIcon() const
 812 {
 813     return (WXHICON)(wxSTD_MDICHILDFRAME_ICON ? wxSTD_MDICHILDFRAME_ICON
 814                                               : wxDEFAULT_MDICHILDFRAME_ICON);
 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         MDISetMenu(parent->GetClientWindow(),
1000                    menuToSet, GetMDIWindowMenu(parent));
1001     }
1002
1003     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
1004     event.SetEventObject( this );
1005
1006     ResetWindowStyle((void *)NULL);
1007
1008     return GetEventHandler()->ProcessEvent(event);
1009 }
1010
1011 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
1012 {
1013     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
1014 #if defined(__WIN95__)
1015     if (!(lpPos->flags & SWP_NOSIZE))
1016     {
1017         RECT rectClient;
1018         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
1019         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1020         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1021         {
1022             ::AdjustWindowRectEx(&rectClient, dwStyle, false, dwExStyle);
1023             lpPos->x = rectClient.left;
1024             lpPos->y = rectClient.top;
1025             lpPos->cx = rectClient.right - rectClient.left;
1026             lpPos->cy = rectClient.bottom - rectClient.top;
1027         }
1028         wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1029         if (pFrameWnd && pFrameWnd->GetToolBar() && pFrameWnd->GetToolBar()->IsShown())
1030         {
1031             pFrameWnd->GetToolBar()->Refresh();
1032         }
1033     }
1034 #endif // Win95
1035
1036     return false;
1037 }
1038
1039 bool wxMDIChildFrame::HandleGetMinMaxInfo(void *mmInfo)
1040 {
1041     MINMAXINFO *info = (MINMAXINFO *)mmInfo;
1042
1043     // let the default window proc calculate the size of MDI children
1044     // frames because it is based on the size of the MDI client window,
1045     // not on the values specified in wxWindow m_max variables
1046     bool processed = MSWDefWindowProc(WM_GETMINMAXINFO, 0, (LPARAM)mmInfo) != 0;
1047
1048     int minWidth = GetMinWidth(),
1049         minHeight = GetMinHeight();
1050
1051     // but allow GetSizeHints() to set the min size
1052     if ( minWidth != -1 )
1053     {
1054         info->ptMinTrackSize.x = minWidth;
1055
1056         processed = true;
1057     }
1058
1059     if ( minHeight != -1 )
1060     {
1061         info->ptMinTrackSize.y = 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     invalidHandle = GetHwnd();
1091
1092     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1093
1094     // Must make sure this handle is invalidated (set to NULL) since all sorts
1095     // of things could happen after the child client is destroyed, but before
1096     // the wxFrame is destroyed.
1097
1098     HWND oldHandle = (HWND)GetHWND();
1099     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1100                 (WPARAM)oldHandle, 0);
1101
1102     if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
1103         ResetWindowStyle((void*) NULL);
1104
1105     invalidHandle = 0;
1106
1107     if (m_hMenu)
1108     {
1109         ::DestroyMenu((HMENU) m_hMenu);
1110         m_hMenu = 0;
1111     }
1112     wxRemoveHandleAssociation(this);
1113     m_hWnd = 0;
1114 }
1115
1116 // Change the client window's extended style so we don't get a client edge
1117 // style when a child is maximised (a double border looks silly.)
1118 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1119 {
1120 #if defined(__WIN95__)
1121     RECT *rect = (RECT *)vrect;
1122     wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1123     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1124     if (!pChild || (pChild == this))
1125     {
1126         HWND hwndClient = GetWinHwnd(pFrameWnd->GetClientWindow());
1127         DWORD dwStyle = ::GetWindowLong(hwndClient, GWL_EXSTYLE);
1128
1129         // we want to test whether there is a maximized child, so just set
1130         // dwThisStyle to 0 if there is no child at all
1131         DWORD dwThisStyle = pChild
1132             ? ::GetWindowLong(GetWinHwnd(pChild), GWL_STYLE) : 0;
1133         DWORD dwNewStyle = dwStyle;
1134         if ( dwThisStyle & WS_MAXIMIZE )
1135             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1136         else
1137             dwNewStyle |= WS_EX_CLIENTEDGE;
1138
1139         if (dwStyle != dwNewStyle)
1140         {
1141             // force update of everything
1142             ::RedrawWindow(hwndClient, NULL, NULL,
1143                            RDW_INVALIDATE | RDW_ALLCHILDREN);
1144             ::SetWindowLong(hwndClient, GWL_EXSTYLE, dwNewStyle);
1145             ::SetWindowPos(hwndClient, NULL, 0, 0, 0, 0,
1146                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1147                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1148                            SWP_NOCOPYBITS);
1149             if (rect)
1150                 ::GetClientRect(hwndClient, rect);
1151
1152             return true;
1153         }
1154     }
1155 #endif // Win95
1156
1157     return false;
1158 }
1159
1160 // ===========================================================================
1161 // wxMDIClientWindow: the window of predefined (by Windows) class which
1162 // contains the child frames
1163 // ===========================================================================
1164
1165 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1166 {
1167     m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
1168
1169     CLIENTCREATESTRUCT ccs;
1170     m_windowStyle = style;
1171     m_parent = parent;
1172
1173     ccs.hWindowMenu = GetMDIWindowMenu(parent);
1174     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1175
1176     DWORD msStyle = MDIS_ALLCHILDSTYLES | WS_VISIBLE | WS_CHILD |
1177                     WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
1178
1179     if ( style & wxHSCROLL )
1180         msStyle |= WS_HSCROLL;
1181     if ( style & wxVSCROLL )
1182         msStyle |= WS_VSCROLL;
1183
1184 #if defined(__WIN95__)
1185     DWORD exStyle = WS_EX_CLIENTEDGE;
1186 #else
1187     DWORD exStyle = 0;
1188 #endif
1189
1190     wxWindowCreationHook hook(this);
1191     m_hWnd = (WXHWND)::CreateWindowEx
1192                        (
1193                         exStyle,
1194                         wxT("MDICLIENT"),
1195                         NULL,
1196                         msStyle,
1197                         0, 0, 0, 0,
1198                         GetWinHwnd(parent),
1199                         NULL,
1200                         wxGetInstance(),
1201                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1202     if ( !m_hWnd )
1203     {
1204         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1205
1206         return false;
1207     }
1208
1209     SubclassWin(m_hWnd);
1210
1211     return true;
1212 }
1213
1214 // Explicitly call default scroll behaviour
1215 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1216 {
1217     // Note: for client windows, the scroll position is not set in
1218     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1219     // scroll position we're at.
1220     // This makes it hard to paint patterns or bitmaps in the background,
1221     // and have the client area scrollable as well.
1222
1223     if ( event.GetOrientation() == wxHORIZONTAL )
1224         m_scrollX = event.GetPosition(); // Always returns zero!
1225     else
1226         m_scrollY = event.GetPosition(); // Always returns zero!
1227
1228     event.Skip();
1229 }
1230
1231 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1232 {
1233     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1234     // client area, you can end up with a non-refreshed portion in the client window
1235     // (see OGL studio sample). So check if the position is changed and if so,
1236     // redraw the MDI child frames.
1237
1238     wxPoint oldPos = GetPosition();
1239
1240     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
1241
1242     wxPoint newPos = GetPosition();
1243
1244     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1245     {
1246         if (GetParent())
1247         {
1248             wxWindowList::Node *node = GetParent()->GetChildren().GetFirst();
1249             while (node)
1250             {
1251                 wxWindow *child = node->GetData();
1252                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1253                 {
1254                    ::RedrawWindow(GetHwndOf(child),
1255                                   NULL,
1256                                   NULL,
1257                                   RDW_FRAME |
1258                                   RDW_ALLCHILDREN |
1259                                   RDW_INVALIDATE);
1260                 }
1261                 node = node->GetNext();
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     HMENU hMenu = (HMENU)menu;
1349
1350     if ( hMenu )
1351     {
1352         wxChar buf[1024];
1353
1354         int N = ::GetMenuItemCount(hMenu);
1355         for ( int i = 0; i < N; i++ )
1356         {
1357             if ( !::GetMenuString(hMenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION) )
1358             {
1359                 // Ignore successful read of menu string with length 0 which
1360                 // occurs, for example, for a maximized MDI childs system menu
1361                 if ( ::GetLastError() != 0 )
1362                 {
1363                     wxLogLastError(wxT("GetMenuString"));
1364                 }
1365
1366                 continue;
1367             }
1368
1369             if ( wxStrcmp(buf, _("&Window")) == 0 )
1370             {
1371                 if ( !::RemoveMenu(hMenu, i, MF_BYPOSITION) )
1372                 {
1373                     wxLogLastError(wxT("RemoveMenu"));
1374                 }
1375
1376                 break;
1377             }
1378         }
1379     }
1380
1381     if ( win )
1382     {
1383         // we don't change the windows menu, but we update the main one
1384         MDISetMenu(win, hMenu, NULL);
1385     }
1386 }
1387
1388 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1389                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1390 {
1391 #ifdef __WIN32__
1392     *activate = true;
1393     *hwndAct = (WXHWND)lParam;
1394     *hwndDeact = (WXHWND)wParam;
1395 #else // Win16
1396     *activate = (WXWORD)wParam;
1397     *hwndAct = (WXHWND)LOWORD(lParam);
1398     *hwndDeact = (WXHWND)HIWORD(lParam);
1399 #endif // Win32/Win16
1400 }
1401
1402 #endif
1403 // wxUSE_MDI_ARCHITECTURE && !defined(__WXUNIVERSAL__)
1404