src/msw/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        mdi.cpp
   3 // Purpose:     MDI classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  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;
  67 extern const wxChar *wxMDIChildFrameClassName;
  68 extern wxWindow *wxWndHook;                 // from window.cpp
  69
  70 extern void wxAssociateWinWithHandle(HWND hWnd, wxWindow *win);
  71 extern void wxRemoveHandleAssociation(wxWindow *win);
  72
  73 static HWND invalidHandle = 0;
  74
  75 // ---------------------------------------------------------------------------
  76 // constants
  77 // ---------------------------------------------------------------------------
  78
  79 static const int IDM_WINDOWTILE  = 4001;
  80 static const int IDM_WINDOWTILEHOR  = 4001;
  81 static const int IDM_WINDOWCASCADE = 4002;
  82 static const int IDM_WINDOWICONS = 4003;
  83 static const int IDM_WINDOWNEXT = 4004;
  84 static const int IDM_WINDOWTILEVERT = 4005;
  85
  86 // This range gives a maximum of 500 MDI children. Should be enough :-)
  87 static const int wxFIRST_MDI_CHILD = 4100;
  88 static const int wxLAST_MDI_CHILD = 4600;
  89
  90 // Status border dimensions
  91 static const int wxTHICK_LINE_BORDER = 3;
  92 static const int wxTHICK_LINE_WIDTH  = 1;
  93
  94 // ---------------------------------------------------------------------------
  95 // private functions
  96 // ---------------------------------------------------------------------------
  97
  98 // set the MDI menus (by sending the WM_MDISETMENU message) and update the menu
  99 // of the parent of win (which is supposed to be the MDI client window)
 100 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow);
 101
 102 // insert the window menu (subMenu) into menu just before "Help" submenu or at
 103 // the very end if not found
 104 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu);
 105
 106 // Remove the window menu
 107 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu);
 108
 109 // is this an id of an MDI child?
 110 inline bool IsMdiCommandId(int id)
 111 {
 112     return (id >= wxFIRST_MDI_CHILD) && (id <= wxLAST_MDI_CHILD);
 113 }
 114
 115 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
 116                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact);
 117
 118 // ===========================================================================
 119 // implementation
 120 // ===========================================================================
 121
 122 // ---------------------------------------------------------------------------
 123 // wxWin macros
 124 // ---------------------------------------------------------------------------
 125
 126 IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
 127 IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
 128 IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
 129
 130 BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
 131     EVT_SIZE(wxMDIParentFrame::OnSize)
 132     EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
 133 END_EVENT_TABLE()
 134
 135 BEGIN_EVENT_TABLE(wxMDIChildFrame, wxFrame)
 136     EVT_IDLE(wxMDIChildFrame::OnIdle)
 137 END_EVENT_TABLE()
 138
 139 BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
 140     EVT_SCROLL(wxMDIClientWindow::OnScroll)
 141 END_EVENT_TABLE()
 142
 143 // ===========================================================================
 144 // wxMDIParentFrame: the frame which contains the client window which manages
 145 // the children
 146 // ===========================================================================
 147
 148 wxMDIParentFrame::wxMDIParentFrame()
 149 {
 150     m_clientWindow = NULL;
 151     m_currentChild = NULL;
 152     m_windowMenu = (wxMenu*) NULL;
 153     m_parentFrameActive = TRUE;
 154 }
 155
 156 bool wxMDIParentFrame::Create(wxWindow *parent,
 157                               wxWindowID id,
 158                               const wxString& title,
 159                               const wxPoint& pos,
 160                               const wxSize& size,
 161                               long style,
 162                               const wxString& name)
 163 {
 164   m_defaultIcon = (WXHICON) (wxSTD_MDIPARENTFRAME_ICON ? wxSTD_MDIPARENTFRAME_ICON : wxDEFAULT_MDIPARENTFRAME_ICON);
 165
 166   m_clientWindow = NULL;
 167   m_currentChild = NULL;
 168
 169   if (style & wxFRAME_NO_WINDOW_MENU)
 170       m_windowMenu = (wxMenu*) NULL;
 171   else
 172   {
 173   // m_windowMenu = (WXHMENU) ::LoadMenu(wxGetInstance(), wxT("wxWindowMenu"));
 174       m_windowMenu = new wxMenu;
 175
 176
 177       m_windowMenu->Append(4002, wxT("&Cascade"));
 178       m_windowMenu->Append(4001, wxT("Tile &Horizontally"));
 179       m_windowMenu->Append(4005, wxT("Tile &Vertically"));
 180       m_windowMenu->AppendSeparator();
 181       m_windowMenu->Append(4003, wxT("&Arrange Icons"));
 182       m_windowMenu->Append(4004, wxT("&Next"));
 183   }
 184
 185   m_parentFrameActive = TRUE;
 186
 187   if (!parent)
 188     wxTopLevelWindows.Append(this);
 189
 190   SetName(name);
 191   m_windowStyle = style;
 192
 193   if (parent) parent->AddChild(this);
 194
 195   if ( id > -1 )
 196     m_windowId = id;
 197   else
 198     m_windowId = (int)NewControlId();
 199
 200   int x = pos.x;
 201   int y = pos.y;
 202   int width = size.x;
 203   int height = size.y;
 204
 205   DWORD msflags = WS_OVERLAPPED;
 206   if (style & wxMINIMIZE_BOX)
 207     msflags |= WS_MINIMIZEBOX;
 208   if (style & wxMAXIMIZE_BOX)
 209     msflags |= WS_MAXIMIZEBOX;
 210   if (style & wxTHICK_FRAME)
 211     msflags |= WS_THICKFRAME;
 212   if (style & wxSYSTEM_MENU)
 213     msflags |= WS_SYSMENU;
 214   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 215     msflags |= WS_MINIMIZE;
 216   if (style & wxMAXIMIZE)
 217     msflags |= WS_MAXIMIZE;
 218   if (style & wxCAPTION)
 219     msflags |= WS_CAPTION;
 220
 221   if (style & wxCLIP_CHILDREN)
 222     msflags |= WS_CLIPCHILDREN;
 223
 224   wxWindow::MSWCreate(m_windowId, parent, wxMDIFrameClassName, this, title, x, y, width, height,
 225          msflags);
 226
 227   wxModelessWindows.Append(this);
 228
 229   // unlike (almost?) all other windows, frames are created hidden
 230   m_isShown = FALSE;
 231
 232   return TRUE;
 233 }
 234
 235 wxMDIParentFrame::~wxMDIParentFrame()
 236 {
 237     DestroyChildren();
 238     // already delete by DestroyChildren()
 239     m_frameToolBar = NULL;
 240     m_frameStatusBar = NULL;
 241
 242     // ::DestroyMenu((HMENU)m_windowMenu);
 243     if (m_windowMenu)
 244     {
 245         delete m_windowMenu;
 246         m_windowMenu = (wxMenu*) NULL;
 247     }
 248
 249     if ( m_clientWindow )
 250     {
 251         if ( m_clientWindow->MSWGetOldWndProc() )
 252             m_clientWindow->UnsubclassWin();
 253
 254         m_clientWindow->SetHWND(0);
 255         delete m_clientWindow;
 256     }
 257 }
 258
 259 void wxMDIParentFrame::InternalSetMenuBar()
 260 {
 261 //    HMENU subMenu = GetSubMenu((HMENU) m_windowMenu, 0);
 262
 263     m_parentFrameActive = TRUE;
 264
 265     HMENU subMenu = (HMENU) 0;
 266     if (GetWindowMenu())
 267         subMenu = (HMENU) GetWindowMenu()->GetHMenu();
 268
 269     InsertWindowMenu(GetClientWindow(), m_hMenu, subMenu);
 270 }
 271
 272 void wxMDIParentFrame::SetWindowMenu(wxMenu* menu)
 273 {
 274     if (m_windowMenu)
 275     {
 276         if (GetMenuBar())
 277         {
 278             // Remove old window menu
 279             RemoveWindowMenu(GetClientWindow(), m_hMenu);
 280         }
 281
 282         delete m_windowMenu;
 283         m_windowMenu = (wxMenu*) NULL;
 284     }
 285     if (menu)
 286     {
 287         m_windowMenu = menu;
 288         if (GetMenuBar())
 289             InsertWindowMenu(GetClientWindow(), m_hMenu, (HMENU) m_windowMenu->GetHMenu());
 290     }
 291 }
 292
 293 void wxMDIParentFrame::OnSize(wxSizeEvent& event)
 294 {
 295     if ( GetClientWindow() )
 296     {
 297         int width, height;
 298         GetClientSize(&width, &height);
 299
 300         GetClientWindow()->SetSize(0, 0, width, height);
 301     }
 302 }
 303
 304 // Returns the active MDI child window
 305 wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
 306 {
 307     HWND hWnd = (HWND)::SendMessage(GetWinHwnd(GetClientWindow()),
 308                                     WM_MDIGETACTIVE, 0, 0L);
 309     if ( hWnd == 0 )
 310         return NULL;
 311     else
 312         return (wxMDIChildFrame *)wxFindWinFromHandle((WXHWND) hWnd);
 313 }
 314
 315 // Create the client window class (don't Create the window, just return a new
 316 // class)
 317 wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
 318 {
 319     return new wxMDIClientWindow;
 320 }
 321
 322 // Responds to colour changes, and passes event on to children.
 323 void wxMDIParentFrame::OnSysColourChanged(wxSysColourChangedEvent& event)
 324 {
 325     if ( m_clientWindow )
 326     {
 327         m_clientWindow->SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
 328         m_clientWindow->Refresh();
 329     }
 330
 331     event.Skip();
 332 }
 333
 334 // ---------------------------------------------------------------------------
 335 // MDI operations
 336 // ---------------------------------------------------------------------------
 337
 338 void wxMDIParentFrame::Cascade()
 339 {
 340     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDICASCADE, 0, 0);
 341 }
 342
 343 // TODO: add a direction argument (hor/vert)
 344 void wxMDIParentFrame::Tile()
 345 {
 346     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDITILE, MDITILE_HORIZONTAL, 0);
 347 }
 348
 349 void wxMDIParentFrame::ArrangeIcons()
 350 {
 351     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDIICONARRANGE, 0, 0);
 352 }
 353
 354 void wxMDIParentFrame::ActivateNext()
 355 {
 356     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 0);
 357 }
 358
 359 void wxMDIParentFrame::ActivatePrevious()
 360 {
 361     ::SendMessage(GetWinHwnd(GetClientWindow()), WM_MDINEXT, 0, 1);
 362 }
 363
 364 // ---------------------------------------------------------------------------
 365 // the MDI parent frame window proc
 366 // ---------------------------------------------------------------------------
 367
 368 long wxMDIParentFrame::MSWWindowProc(WXUINT message,
 369                                      WXWPARAM wParam,
 370                                      WXLPARAM lParam)
 371 {
 372     long rc = 0;
 373     bool processed = FALSE;
 374
 375     switch ( message )
 376     {
 377         case WM_ACTIVATE:
 378             {
 379                 WXWORD state, minimized;
 380                 WXHWND hwnd;
 381                 UnpackActivate(wParam, lParam, &state, &minimized, &hwnd);
 382
 383                 processed = HandleActivate(state, minimized != 0, hwnd);
 384             }
 385             break;
 386
 387         case WM_COMMAND:
 388             {
 389                 WXWORD id, cmd;
 390                 WXHWND hwnd;
 391                 UnpackCommand(wParam, lParam, &id, &hwnd, &cmd);
 392
 393                 (void)HandleCommand(id, cmd, hwnd);
 394
 395                 // even if the frame didn't process it, there is no need to try it
 396                 // once again (i.e. call wxFrame::HandleCommand()) - we just dud it,
 397                 // so pretend we processed the message anyhow
 398                 processed = TRUE;
 399             }
 400
 401             // always pass this message DefFrameProc(), otherwise MDI menu
 402             // commands (and sys commands - more surprizingly!) won't work
 403             MSWDefWindowProc(message, wParam, lParam);
 404             break;
 405
 406         case WM_CREATE:
 407             m_clientWindow = OnCreateClient();
 408             // Uses own style for client style
 409             if ( !m_clientWindow->CreateClient(this, GetWindowStyleFlag()) )
 410             {
 411                 wxLogMessage(_("Failed to create MDI parent frame."));
 412
 413                 rc = -1;
 414             }
 415
 416             processed = TRUE;
 417             break;
 418
 419         case WM_ERASEBKGND:
 420             processed = TRUE;
 421
 422             // we erase background ourselves
 423             rc = TRUE;
 424             break;
 425
 426         case WM_MENUSELECT:
 427             {
 428                 WXWORD item, flags;
 429                 WXHMENU hmenu;
 430                 UnpackMenuSelect(wParam, lParam, &item, &flags, &hmenu);
 431
 432                 if ( m_parentFrameActive )
 433                 {
 434                     processed = HandleMenuSelect(item, flags, hmenu);
 435                 }
 436                 else if (m_currentChild)
 437                 {
 438                     processed = m_currentChild->
 439                         HandleMenuSelect(item, flags, hmenu);
 440                 }
 441             }
 442             break;
 443
 444         case WM_SIZE:
 445             // as we don't (usually) resize the MDI client to exactly fit the
 446             // client area (we put it below the toolbar, above statusbar &c),
 447             // we should not pass this one to DefFrameProc
 448             break;
 449     }
 450
 451     if ( !processed )
 452         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 453
 454     return rc;
 455 }
 456
 457 bool wxMDIParentFrame::HandleActivate(int state, bool minimized, WXHWND activate)
 458 {
 459     bool processed = FALSE;
 460
 461     if ( wxWindow::HandleActivate(state, minimized, activate) )
 462     {
 463         // already processed
 464         processed = TRUE;
 465     }
 466
 467     // If this window is an MDI parent, we must also send an OnActivate message
 468     // to the current child.
 469     if ( (m_currentChild != NULL) &&
 470          ((state == WA_ACTIVE) || (state == WA_CLICKACTIVE)) )
 471     {
 472         wxActivateEvent event(wxEVT_ACTIVATE, TRUE, m_currentChild->GetId());
 473         event.SetEventObject( m_currentChild );
 474         if ( m_currentChild->GetEventHandler()->ProcessEvent(event) )
 475             processed = TRUE;
 476     }
 477
 478     return processed;
 479 }
 480
 481 bool wxMDIParentFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 482 {
 483     // In case it's e.g. a toolbar.
 484     if ( hwnd )
 485     {
 486         wxWindow *win = wxFindWinFromHandle(hwnd);
 487         if ( win )
 488             return win->MSWCommand(cmd, id);
 489     }
 490
 491     // is it one of standard MDI commands?
 492     WXWPARAM wParam = 0;
 493     int msg;
 494     switch ( id )
 495     {
 496         case IDM_WINDOWCASCADE:
 497             msg = WM_MDICASCADE;
 498             wParam = MDITILE_SKIPDISABLED;
 499             break;
 500
 501         case IDM_WINDOWTILEHOR:
 502             wParam |= MDITILE_HORIZONTAL;
 503             // fall through
 504
 505         case IDM_WINDOWTILEVERT:
 506             if ( !wParam )
 507                 wParam = MDITILE_VERTICAL;
 508             msg = WM_MDITILE;
 509             wParam |= MDITILE_SKIPDISABLED;
 510             break;
 511
 512         case IDM_WINDOWICONS:
 513             msg = WM_MDIICONARRANGE;
 514             break;
 515
 516         case IDM_WINDOWNEXT:
 517             msg = WM_MDINEXT;
 518             break;
 519
 520         default:
 521             msg = 0;
 522     }
 523
 524     if ( msg )
 525     {
 526         ::SendMessage(GetWinHwnd(GetClientWindow()), msg, wParam, 0);
 527
 528         return TRUE;
 529     }
 530
 531     // FIXME VZ: what does this test do??
 532     if (id >= 0xF000)
 533     {
 534         return FALSE; // Get WndProc to call default proc
 535     }
 536
 537     if ( IsMdiCommandId(id) )
 538     {
 539         wxWindowList::Node* node = GetChildren().GetFirst();
 540         while ( node )
 541         {
 542             wxWindow* child = node->GetData();
 543             if ( child->GetHWND() )
 544             {
 545                 long childId = wxGetWindowId(child->GetHWND());
 546                 if (childId == (long)id)
 547                 {
 548                     ::SendMessage( GetWinHwnd(GetClientWindow()),
 549                                    WM_MDIACTIVATE,
 550                                    (WPARAM)child->GetHWND(), 0);
 551                     return TRUE;
 552                 }
 553             }
 554             node = node->GetNext();
 555         }
 556     }
 557     else if ( m_parentFrameActive )
 558     {
 559         return ProcessCommand(id);
 560     }
 561     else if ( m_currentChild )
 562     {
 563         return m_currentChild->HandleCommand(id, cmd, hwnd);
 564     }
 565     else
 566     {
 567         // this shouldn't happen because it means that our messages are being
 568         // lost (they're not sent to the parent frame nor to the children)
 569         wxFAIL_MSG(wxT("MDI parent frame is not active, yet there is no active MDI child?"));
 570     }
 571
 572     return FALSE;
 573 }
 574
 575 long wxMDIParentFrame::MSWDefWindowProc(WXUINT message,
 576                                         WXWPARAM wParam,
 577                                         WXLPARAM lParam)
 578 {
 579     WXHWND clientWnd;
 580     if ( GetClientWindow() )
 581         clientWnd = GetClientWindow()->GetHWND();
 582     else
 583         clientWnd = 0;
 584
 585     return DefFrameProc(GetHwnd(), (HWND)clientWnd, message, wParam, lParam);
 586 }
 587
 588 bool wxMDIParentFrame::MSWTranslateMessage(WXMSG* msg)
 589 {
 590     MSG *pMsg = (MSG *)msg;
 591
 592     // first let the current child get it
 593     if ( m_currentChild && m_currentChild->GetHWND() &&
 594          m_currentChild->MSWTranslateMessage(msg) )
 595     {
 596         return TRUE;
 597     }
 598
 599     // then try out accel table (will also check the menu accels)
 600     if ( wxFrame::MSWTranslateMessage(msg) )
 601     {
 602         return TRUE;
 603     }
 604
 605     // finally, check for MDI specific built in accel keys
 606     if ( pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN )
 607     {
 608         if ( ::TranslateMDISysAccel(GetWinHwnd(GetClientWindow()), pMsg))
 609             return TRUE;
 610     }
 611
 612     return FALSE;
 613 }
 614
 615 // ===========================================================================
 616 // wxMDIChildFrame
 617 // ===========================================================================
 618
 619 void wxMDIChildFrame::Init()
 620 {
 621     m_needsResize = TRUE;
 622 }
 623
 624 bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
 625                              wxWindowID id,
 626                              const wxString& title,
 627                              const wxPoint& pos,
 628                              const wxSize& size,
 629                              long style,
 630                              const wxString& name)
 631 {
 632   m_defaultIcon = (WXHICON)(wxSTD_MDICHILDFRAME_ICON ? wxSTD_MDICHILDFRAME_ICON
 633                                                      : wxDEFAULT_MDICHILDFRAME_ICON);
 634
 635   SetName(name);
 636
 637   if ( id > -1 )
 638     m_windowId = id;
 639   else
 640     m_windowId = (int)NewControlId();
 641
 642   if ( parent )
 643   {
 644       parent->AddChild(this);
 645   }
 646
 647   wxWndHook = this;
 648
 649   int x = pos.x;
 650   int y = pos.y;
 651   int width = size.x;
 652   int height = size.y;
 653
 654   MDICREATESTRUCT mcs;
 655
 656   mcs.szClass = wxMDIChildFrameClassName;
 657   mcs.szTitle = title;
 658   mcs.hOwner = wxGetInstance();
 659   if (x > -1)
 660       mcs.x = x;
 661   else
 662       mcs.x = CW_USEDEFAULT;
 663
 664   if (y > -1)
 665       mcs.y = y;
 666   else
 667       mcs.y = CW_USEDEFAULT;
 668
 669   if (width > -1)
 670       mcs.cx = width;
 671   else
 672       mcs.cx = CW_USEDEFAULT;
 673
 674   if (height > -1)
 675       mcs.cy = height;
 676   else
 677       mcs.cy = CW_USEDEFAULT;
 678
 679   DWORD msflags = WS_OVERLAPPED | WS_CLIPCHILDREN;
 680   if (style & wxMINIMIZE_BOX)
 681     msflags |= WS_MINIMIZEBOX;
 682   if (style & wxMAXIMIZE_BOX)
 683     msflags |= WS_MAXIMIZEBOX;
 684   if (style & wxTHICK_FRAME)
 685     msflags |= WS_THICKFRAME;
 686   if (style & wxSYSTEM_MENU)
 687     msflags |= WS_SYSMENU;
 688   if ((style & wxMINIMIZE) || (style & wxICONIZE))
 689     msflags |= WS_MINIMIZE;
 690   if (style & wxMAXIMIZE)
 691     msflags |= WS_MAXIMIZE;
 692   if (style & wxCAPTION)
 693     msflags |= WS_CAPTION;
 694
 695   mcs.style = msflags;
 696
 697   mcs.lParam = 0;
 698
 699   DWORD Return = SendMessage(GetWinHwnd(parent->GetClientWindow()),
 700                              WM_MDICREATE, 0, (LONG)(LPSTR)&mcs);
 701
 702   //handle = (HWND)LOWORD(Return);
 703   // Must be the DWORRD for WIN32. And in 16 bits, HIWORD=0 (says Microsoft)
 704   m_hWnd = (WXHWND)Return;
 705
 706   wxWndHook = NULL;
 707   wxAssociateWinWithHandle((HWND) GetHWND(), this);
 708
 709   // VZ: what's this? an act of piracy?
 710   //SetWindowLong(GetHwnd(), 0, (long)this);
 711
 712   wxModelessWindows.Append(this);
 713   return TRUE;
 714 }
 715
 716 wxMDIChildFrame::~wxMDIChildFrame()
 717 {
 718     DestroyChildren();
 719
 720     // already delete by DestroyChildren()
 721     m_frameToolBar = NULL;
 722     m_frameStatusBar = NULL;
 723
 724     MSWDestroyWindow();
 725 }
 726
 727 // Set the client size (i.e. leave the calculation of borders etc.
 728 // to wxWindows)
 729 void wxMDIChildFrame::DoSetClientSize(int width, int height)
 730 {
 731   HWND hWnd = GetHwnd();
 732
 733   RECT rect;
 734   ::GetClientRect(hWnd, &rect);
 735
 736   RECT rect2;
 737   GetWindowRect(hWnd, &rect2);
 738
 739   // Find the difference between the entire window (title bar and all)
 740   // and the client area; add this to the new client size to move the
 741   // window
 742   int actual_width = rect2.right - rect2.left - rect.right + width;
 743   int actual_height = rect2.bottom - rect2.top - rect.bottom + height;
 744
 745   if (GetStatusBar() && GetStatusBar()->IsShown())
 746   {
 747     int sx, sy;
 748     GetStatusBar()->GetSize(&sx, &sy);
 749     actual_height += sy;
 750   }
 751
 752   POINT point;
 753   point.x = rect2.left;
 754   point.y = rect2.top;
 755
 756   // If there's an MDI parent, must subtract the parent's top left corner
 757   // since MoveWindow moves relative to the parent
 758   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 759   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 760
 761   MoveWindow(hWnd, point.x, point.y, actual_width, actual_height, (BOOL)TRUE);
 762
 763   wxSizeEvent event(wxSize(width, height), m_windowId);
 764   event.SetEventObject( this );
 765   GetEventHandler()->ProcessEvent(event);
 766 }
 767
 768 void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
 769 {
 770   RECT rect;
 771   GetWindowRect(GetHwnd(), &rect);
 772   POINT point;
 773   point.x = rect.left;
 774   point.y = rect.top;
 775
 776   // Since we now have the absolute screen coords,
 777   // if there's a parent we must subtract its top left corner
 778   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
 779   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 780
 781   *x = point.x;
 782   *y = point.y;
 783 }
 784
 785 void wxMDIChildFrame::InternalSetMenuBar()
 786 {
 787     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 788
 789     // HMENU subMenu = GetSubMenu((HMENU)parent->GetWindowMenu(), 0);
 790     HMENU subMenu = (HMENU) 0;
 791     if (parent->GetWindowMenu())
 792         subMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
 793
 794     InsertWindowMenu(parent->GetClientWindow(), m_hMenu, subMenu);
 795
 796     parent->m_parentFrameActive = FALSE;
 797 }
 798
 799 // ---------------------------------------------------------------------------
 800 // MDI operations
 801 // ---------------------------------------------------------------------------
 802
 803 void wxMDIChildFrame::Maximize(bool maximize)
 804 {
 805     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 806     if ( parent && parent->GetClientWindow() )
 807     {
 808         ::SendMessage(GetWinHwnd(parent->GetClientWindow()),
 809                       maximize ? WM_MDIMAXIMIZE : WM_MDIRESTORE,
 810                       (WPARAM)GetHwnd(), 0);
 811     }
 812 }
 813
 814 void wxMDIChildFrame::Restore()
 815 {
 816     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 817     if ( parent && parent->GetClientWindow() )
 818     {
 819         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIRESTORE,
 820                       (WPARAM) GetHwnd(), 0);
 821     }
 822 }
 823
 824 void wxMDIChildFrame::Activate()
 825 {
 826     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 827     if ( parent && parent->GetClientWindow() )
 828     {
 829         ::SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIACTIVATE,
 830                       (WPARAM) GetHwnd(), 0);
 831     }
 832 }
 833
 834 // ---------------------------------------------------------------------------
 835 // MDI window proc and message handlers
 836 // ---------------------------------------------------------------------------
 837
 838 long wxMDIChildFrame::MSWWindowProc(WXUINT message,
 839                                     WXWPARAM wParam,
 840                                     WXLPARAM lParam)
 841 {
 842     long rc = 0;
 843     bool processed = FALSE;
 844
 845     switch ( message )
 846     {
 847         case WM_COMMAND:
 848             {
 849                 WORD id, cmd;
 850                 WXHWND hwnd;
 851                 UnpackCommand((WXWPARAM)wParam, (WXLPARAM)lParam,
 852                               &id, &hwnd, &cmd);
 853
 854                 processed = HandleCommand(id, cmd, (WXHWND)hwnd);
 855             }
 856             break;
 857
 858         case WM_GETMINMAXINFO:
 859             // let the default window proc calculate the size of MDI children
 860             // frames because it is based on the size of the MDI client window,
 861             // not on the values specified in wxWindow m_min/max variables
 862             return MSWDefWindowProc(message, wParam, lParam);
 863
 864         case WM_MDIACTIVATE:
 865             {
 866                 WXWORD act;
 867                 WXHWND hwndAct, hwndDeact;
 868                 UnpackMDIActivate(wParam, lParam, &act, &hwndAct, &hwndDeact);
 869
 870                 processed = HandleMDIActivate(act, hwndAct, hwndDeact);
 871             }
 872             // fall through
 873
 874         case WM_MOVE:
 875             // must pass WM_MOVE to DefMDIChildProc() to recalculate MDI client
 876             // scrollbars if necessary
 877
 878             // fall through
 879
 880         case WM_SIZE:
 881             // must pass WM_SIZE to DefMDIChildProc(), otherwise many weird
 882             // things happen
 883             MSWDefWindowProc(message, wParam, lParam);
 884             break;
 885
 886         case WM_SYSCOMMAND:
 887             // DefMDIChildProc handles SC_{NEXT/PREV}WINDOW here, so pass it
 888             // the message (the base class version does not)
 889             return MSWDefWindowProc(message, wParam, lParam);
 890
 891         case WM_WINDOWPOSCHANGING:
 892             processed = HandleWindowPosChanging((LPWINDOWPOS)lParam);
 893             break;
 894     }
 895
 896     if ( !processed )
 897         rc = wxFrame::MSWWindowProc(message, wParam, lParam);
 898
 899     return rc;
 900 }
 901
 902 bool wxMDIChildFrame::HandleCommand(WXWORD id, WXWORD cmd, WXHWND hwnd)
 903 {
 904     // In case it's e.g. a toolbar.
 905     if ( hwnd )
 906     {
 907         wxWindow *win = wxFindWinFromHandle(hwnd);
 908         if (win)
 909             return win->MSWCommand(cmd, id);
 910     }
 911
 912     if (wxCurrentPopupMenu)
 913     {
 914         wxMenu *popupMenu = wxCurrentPopupMenu;
 915         wxCurrentPopupMenu = NULL;
 916         if (popupMenu->MSWCommand(cmd, id))
 917             return TRUE;
 918     }
 919
 920     if (GetMenuBar() && GetMenuBar()->FindItem(id))
 921     {
 922         ProcessCommand(id);
 923         return TRUE;
 924     }
 925     else
 926         return FALSE;
 927
 928     return TRUE;
 929 }
 930
 931 bool wxMDIChildFrame::HandleMDIActivate(long WXUNUSED(activate),
 932                                         WXHWND hwndAct,
 933                                         WXHWND hwndDeact)
 934 {
 935     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
 936
 937     HMENU menuToSet = 0;
 938
 939     bool activated;
 940
 941     if ( m_hWnd == hwndAct )
 942     {
 943         activated = TRUE;
 944         parent->m_currentChild = this;
 945
 946         HMENU child_menu = (HMENU)GetWinMenu();
 947         if ( child_menu )
 948         {
 949             parent->m_parentFrameActive = FALSE;
 950
 951             menuToSet = child_menu;
 952         }
 953     }
 954     else if ( m_hWnd == hwndDeact )
 955     {
 956         wxASSERT_MSG( parent->m_currentChild == this,
 957                       wxT("can't deactivate MDI child which wasn't active!") );
 958
 959         activated = FALSE;
 960         parent->m_currentChild = NULL;
 961
 962         HMENU parent_menu = (HMENU)parent->GetWinMenu();
 963         if ( parent_menu )
 964         {
 965             parent->m_parentFrameActive = TRUE;
 966
 967             menuToSet = parent_menu;
 968         }
 969     }
 970     else
 971     {
 972         // we have nothing to do with it
 973         return FALSE;
 974     }
 975
 976     if ( menuToSet )
 977     {
 978         HMENU subMenu = (HMENU) 0;
 979         if (parent->GetWindowMenu())
 980             subMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
 981
 982         MDISetMenu(parent->GetClientWindow(), menuToSet, subMenu);
 983     }
 984
 985     wxActivateEvent event(wxEVT_ACTIVATE, activated, m_windowId);
 986     event.SetEventObject( this );
 987
 988     return GetEventHandler()->ProcessEvent(event);
 989 }
 990
 991 bool wxMDIChildFrame::HandleWindowPosChanging(void *pos)
 992 {
 993     WINDOWPOS *lpPos = (WINDOWPOS *)pos;
 994 #if defined(__WIN95__)
 995     if (!(lpPos->flags & SWP_NOSIZE))
 996     {
 997         RECT rectClient;
 998         DWORD dwExStyle = ::GetWindowLong(GetHwnd(), GWL_EXSTYLE);
 999         DWORD dwStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1000         if (ResetWindowStyle((void *) & rectClient) && (dwStyle & WS_MAXIMIZE))
1001         {
1002             ::AdjustWindowRectEx(&rectClient, dwStyle, FALSE, dwExStyle);
1003             lpPos->x = rectClient.left;
1004             lpPos->y = rectClient.top;
1005             lpPos->cx = rectClient.right - rectClient.left;
1006             lpPos->cy = rectClient.bottom - rectClient.top;
1007         }
1008         wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1009         if (pFrameWnd && pFrameWnd->GetToolBar() && pFrameWnd->GetToolBar()->IsShown())
1010         {
1011             pFrameWnd->GetToolBar()->Refresh();
1012         }
1013     }
1014 #endif // Win95
1015
1016     return FALSE;
1017 }
1018
1019 // ---------------------------------------------------------------------------
1020 // MDI specific message translation/preprocessing
1021 // ---------------------------------------------------------------------------
1022
1023 long wxMDIChildFrame::MSWDefWindowProc(WXUINT message, WXUINT wParam, WXLPARAM lParam)
1024 {
1025     return DefMDIChildProc(GetHwnd(),
1026                            (UINT)message, (WPARAM)wParam, (LPARAM)lParam);
1027 }
1028
1029 bool wxMDIChildFrame::MSWTranslateMessage(WXMSG* msg)
1030 {
1031     return m_acceleratorTable.Translate(GetParent(), msg);
1032 }
1033
1034 // ---------------------------------------------------------------------------
1035 // misc
1036 // ---------------------------------------------------------------------------
1037
1038 void wxMDIChildFrame::MSWDestroyWindow()
1039 {
1040     MSWDetachWindowMenu();
1041     invalidHandle = GetHwnd();
1042
1043     wxMDIParentFrame *parent = (wxMDIParentFrame *)GetParent();
1044
1045     // Must make sure this handle is invalidated (set to NULL) since all sorts
1046     // of things could happen after the child client is destroyed, but before
1047     // the wxFrame is destroyed.
1048
1049     HWND oldHandle = (HWND)GetHWND();
1050     SendMessage(GetWinHwnd(parent->GetClientWindow()), WM_MDIDESTROY,
1051                 (WPARAM)oldHandle, 0);
1052
1053     if (parent->GetActiveChild() == (wxMDIChildFrame*) NULL)
1054         ResetWindowStyle((void*) NULL);
1055
1056     invalidHandle = 0;
1057
1058     if (m_hMenu)
1059     {
1060         ::DestroyMenu((HMENU) m_hMenu);
1061         m_hMenu = 0;
1062     }
1063     wxRemoveHandleAssociation(this);
1064     m_hWnd = 0;
1065 }
1066
1067 // Change the client window's extended style so we don't get a client edge
1068 // style when a child is maximised (a double border looks silly.)
1069 bool wxMDIChildFrame::ResetWindowStyle(void *vrect)
1070 {
1071 #if defined(__WIN95__)
1072     RECT *rect = (RECT *)vrect;
1073     wxMDIParentFrame* pFrameWnd = (wxMDIParentFrame *)GetParent();
1074     wxMDIChildFrame* pChild = pFrameWnd->GetActiveChild();
1075     if (!pChild || (pChild == this))
1076     {
1077         DWORD dwStyle = ::GetWindowLong(GetWinHwnd(pFrameWnd->GetClientWindow()), GWL_EXSTYLE);
1078         DWORD dwThisStyle = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1079         DWORD dwNewStyle = dwStyle;
1080         if (pChild != NULL && (dwThisStyle & WS_MAXIMIZE))
1081             dwNewStyle &= ~(WS_EX_CLIENTEDGE);
1082         else
1083             dwNewStyle |= WS_EX_CLIENTEDGE;
1084
1085         if (dwStyle != dwNewStyle)
1086         {
1087             HWND hwnd = GetWinHwnd(pFrameWnd->GetClientWindow());
1088             ::RedrawWindow(hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ALLCHILDREN);
1089             ::SetWindowLong(hwnd, GWL_EXSTYLE, dwNewStyle);
1090             ::SetWindowPos(hwnd, NULL, 0, 0, 0, 0,
1091                            SWP_FRAMECHANGED | SWP_NOACTIVATE |
1092                            SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER |
1093                            SWP_NOCOPYBITS);
1094             if (rect)
1095                 ::GetClientRect(hwnd, rect);
1096
1097             return TRUE;
1098         }
1099     }
1100 #endif // Win95
1101
1102     return FALSE;
1103 }
1104
1105 // ===========================================================================
1106 // wxMDIClientWindow: the window of predefined (by Windows) class which
1107 // contains the child frames
1108 // ===========================================================================
1109
1110 bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
1111 {
1112     m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE);
1113
1114     CLIENTCREATESTRUCT ccs;
1115     m_windowStyle = style;
1116     m_parent = parent;
1117
1118     ccs.hWindowMenu = (HMENU) 0;
1119     if (parent->GetWindowMenu())
1120         ccs.hWindowMenu = (HMENU) parent->GetWindowMenu()->GetHMenu();
1121     ccs.idFirstChild = wxFIRST_MDI_CHILD;
1122
1123     DWORD msStyle = WS_VISIBLE | WS_CHILD | WS_CLIPCHILDREN;
1124     if ( style & wxHSCROLL )
1125         msStyle |= WS_HSCROLL;
1126     if ( style & wxVSCROLL )
1127         msStyle |= WS_VSCROLL;
1128
1129 #if defined(__WIN95__)
1130     DWORD exStyle = WS_EX_CLIENTEDGE;
1131 #else
1132     DWORD exStyle = 0;
1133 #endif
1134
1135     wxWndHook = this;
1136     m_hWnd = (WXHWND)::CreateWindowEx
1137                        (
1138                         exStyle,
1139                         wxT("MDICLIENT"),
1140                         NULL,
1141                         msStyle,
1142                         0, 0, 0, 0,
1143                         GetWinHwnd(parent),
1144                         NULL,
1145                         wxGetInstance(),
1146                         (LPSTR)(LPCLIENTCREATESTRUCT)&ccs);
1147     if ( !m_hWnd )
1148     {
1149         wxLogLastError(wxT("CreateWindowEx(MDI client)"));
1150
1151         return FALSE;
1152     }
1153
1154     SubclassWin(m_hWnd);
1155     wxWndHook = NULL;
1156
1157     return TRUE;
1158 }
1159
1160 // Explicitly call default scroll behaviour
1161 void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
1162 {
1163     // Note: for client windows, the scroll position is not set in
1164     // WM_HSCROLL, WM_VSCROLL, so we can't easily determine what
1165     // scroll position we're at.
1166     // This makes it hard to paint patterns or bitmaps in the background,
1167     // and have the client area scrollable as well.
1168
1169     if ( event.GetOrientation() == wxHORIZONTAL )
1170         m_scrollX = event.GetPosition(); // Always returns zero!
1171     else
1172         m_scrollY = event.GetPosition(); // Always returns zero!
1173
1174     event.Skip();
1175 }
1176
1177 void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
1178 {
1179     // Try to fix a problem whereby if you show an MDI child frame, then reposition the
1180     // client area, you can end up with a non-refreshed portion in the client window
1181     // (see OGL studio sample). So check if the position is changed and if so,
1182     // redraw the MDI child frames.
1183
1184     wxPoint oldPos = GetPosition();
1185
1186     wxWindow::DoSetSize(x, y, width, height, sizeFlags);
1187
1188     wxPoint newPos = GetPosition();
1189
1190     if ((newPos.x != oldPos.x) || (newPos.y != oldPos.y))
1191     {
1192         if (GetParent())
1193         {
1194             wxNode* node = GetParent()->GetChildren().First();
1195             while (node)
1196             {
1197                 wxWindow* child = (wxWindow*) node->Data();
1198                 if (child->IsKindOf(CLASSINFO(wxMDIChildFrame)))
1199                 {
1200                     HWND hWnd = (HWND) child->GetHWND();
1201                    ::RedrawWindow(hWnd, NULL, NULL, RDW_FRAME|RDW_ALLCHILDREN|RDW_INVALIDATE );
1202                 }
1203                 node = node->Next();
1204             }
1205         }
1206     }
1207 }
1208
1209 void wxMDIChildFrame::OnIdle(wxIdleEvent& event)
1210 {
1211     // MDI child frames get their WM_SIZE when they're constructed but at this
1212     // moment they don't have any children yet so all child windows will be
1213     // positioned incorrectly when they are added later - to fix this, we
1214     // generate an artificial size event here
1215     if ( m_needsResize )
1216     {
1217         m_needsResize = FALSE; // avoid any possibility of recursion
1218
1219         SendSizeEvent();
1220     }
1221
1222     event.Skip();
1223 }
1224
1225 // ---------------------------------------------------------------------------
1226 // non member functions
1227 // ---------------------------------------------------------------------------
1228
1229 static void MDISetMenu(wxWindow *win, HMENU hmenuFrame, HMENU hmenuWindow)
1230 {
1231     ::SendMessage(GetWinHwnd(win), WM_MDISETMENU,
1232 #ifdef __WIN32__
1233                   (WPARAM)hmenuFrame, (LPARAM)hmenuWindow
1234 #else
1235                   0, MAKELPARAM(hmenuFrame, hmenuWindow)
1236 #endif
1237                  );
1238
1239     // update menu bar of the parent window
1240     wxWindow *parent = win->GetParent();
1241     wxCHECK_RET( parent, wxT("MDI client without parent frame? weird...") );
1242
1243     ::DrawMenuBar(GetWinHwnd(parent));
1244 }
1245
1246 static void InsertWindowMenu(wxWindow *win, WXHMENU menu, HMENU subMenu)
1247 {
1248     // Try to insert Window menu in front of Help, otherwise append it.
1249     HMENU hmenu = (HMENU)menu;
1250
1251     if (subMenu)
1252     {
1253     int N = GetMenuItemCount(hmenu);
1254     bool success = FALSE;
1255     for ( int i = 0; i < N; i++ )
1256     {
1257         wxChar buf[256];
1258         int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1259         if ( chars == 0 )
1260         {
1261             wxLogLastError(wxT("GetMenuString"));
1262
1263             continue;
1264         }
1265
1266         if ( wxStripMenuCodes(wxString(buf)).IsSameAs(_("Help")) )
1267         {
1268             success = TRUE;
1269             ::InsertMenu(hmenu, i, MF_BYPOSITION | MF_POPUP | MF_STRING,
1270                          (UINT)subMenu, _("&Window"));
1271             break;
1272         }
1273     }
1274
1275     if ( !success )
1276     {
1277         ::AppendMenu(hmenu, MF_POPUP, (UINT)subMenu, _("&Window"));
1278     }
1279     }
1280
1281     MDISetMenu(win, hmenu, subMenu);
1282 }
1283
1284 static void RemoveWindowMenu(wxWindow *win, WXHMENU menu)
1285 {
1286     // Try to insert Window menu in front of Help, otherwise append it.
1287     HMENU hmenu = (HMENU)menu;
1288     int N = GetMenuItemCount(hmenu);
1289     bool success = FALSE;
1290     for ( int i = 0; i < N; i++ )
1291     {
1292         wxChar buf[256];
1293         int chars = GetMenuString(hmenu, i, buf, WXSIZEOF(buf), MF_BYPOSITION);
1294         if ( chars == 0 )
1295         {
1296             wxLogLastError(wxT("GetMenuString"));
1297
1298             continue;
1299         }
1300
1301         if ( wxStripMenuCodes(wxString(buf)).IsSameAs(_("Window")) )
1302         {
1303             success = TRUE;
1304             ::RemoveMenu(hmenu, i, MF_BYPOSITION);
1305             break;
1306         }
1307     }
1308
1309     // Does passing 0 for the window menu really work with WM_MDISETMENU?
1310     MDISetMenu(win, hmenu, 0);
1311 }
1312
1313 static void UnpackMDIActivate(WXWPARAM wParam, WXLPARAM lParam,
1314                               WXWORD *activate, WXHWND *hwndAct, WXHWND *hwndDeact)
1315 {
1316 #ifdef __WIN32__
1317     *activate = TRUE;
1318     *hwndAct = (WXHWND)lParam;
1319     *hwndDeact = (WXHWND)wParam;
1320 #else // Win16
1321     *activate = (WXWORD)wParam;
1322     *hwndAct = (WXHWND)LOWORD(lParam);
1323     *hwndDeact = (WXHWND)HIWORD(lParam);
1324 #endif // Win32/Win16
1325 }