src/gtk/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dialog.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "dialog.h"
  12 #endif
  13
  14 #include "wx/dialog.h"
  15 #include "wx/frame.h"
  16 #include "wx/app.h"
  17 #include "wx/cursor.h"
  18
  19 #include <gdk/gdk.h>
  20 #include <gtk/gtk.h>
  21 #include <gdk/gdkkeysyms.h>
  22
  23 #include "wx/gtk/win_gtk.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // idle system
  27 //-----------------------------------------------------------------------------
  28
  29 extern void wxapp_install_idle_handler();
  30 extern bool g_isIdle;
  31 extern int g_openDialogs;
  32
  33 //-----------------------------------------------------------------------------
  34 // data
  35 //-----------------------------------------------------------------------------
  36
  37 extern wxList wxPendingDelete;
  38
  39 //-----------------------------------------------------------------------------
  40 // "focus" from m_window
  41 //-----------------------------------------------------------------------------
  42
  43 static gint gtk_dialog_focus_callback( GtkWidget *widget, GtkDirectionType WXUNUSED(d), wxWindow *WXUNUSED(win) )
  44 {
  45     if (g_isIdle)
  46         wxapp_install_idle_handler();
  47
  48     // This disables GTK's tab traversal
  49     gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus" );
  50     return TRUE;
  51 }
  52
  53 //-----------------------------------------------------------------------------
  54 // "delete_event"
  55 //-----------------------------------------------------------------------------
  56
  57 bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxDialog *win )
  58 {
  59     if (g_isIdle)
  60         wxapp_install_idle_handler();
  61
  62     if (win->IsEnabled())
  63         win->Close();
  64
  65     return TRUE;
  66 }
  67
  68 //-----------------------------------------------------------------------------
  69 // "size_allocate"
  70 //-----------------------------------------------------------------------------
  71
  72 static void gtk_dialog_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxDialog *win )
  73 {
  74     if (g_isIdle)
  75         wxapp_install_idle_handler();
  76
  77     if (!win->m_hasVMT) return;
  78
  79     if ((win->m_width != alloc->width) || (win->m_height != alloc->height))
  80     {
  81         win->m_width = alloc->width;
  82         win->m_height = alloc->height;
  83         win->GtkUpdateSize();
  84     }
  85 }
  86
  87 //-----------------------------------------------------------------------------
  88 // "configure_event"
  89 //-----------------------------------------------------------------------------
  90
  91 static gint
  92 #if (GTK_MINOR_VERSION > 0)
  93 gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDialog *win )
  94 #else
  95 gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *event, wxDialog *win )
  96 #endif
  97 {
  98     if (g_isIdle)
  99         wxapp_install_idle_handler();
 100
 101     if (!win->m_hasVMT) return FALSE;
 102
 103 #if (GTK_MINOR_VERSION > 0)
 104     int x = 0;
 105     int y = 0;
 106     gdk_window_get_root_origin( win->m_widget->window, &x, &y );
 107     win->m_x = x;
 108     win->m_y = y;
 109 #else
 110     win->m_x = event->x;
 111     win->m_y = event->y;
 112 #endif
 113
 114     wxMoveEvent mevent( wxPoint(win->m_x,win->m_y), win->GetId() );
 115     mevent.SetEventObject( win );
 116     win->GetEventHandler()->ProcessEvent( mevent );
 117
 118     return FALSE;
 119 }
 120
 121 //-----------------------------------------------------------------------------
 122 // "realize" from m_widget
 123 //-----------------------------------------------------------------------------
 124
 125 /* we cannot MWM hints and icons before the widget has been realized,
 126    so we do this directly after realization */
 127
 128 static gint
 129 gtk_dialog_realized_callback( GtkWidget *widget, wxDialog *win )
 130 {
 131     if (g_isIdle)
 132         wxapp_install_idle_handler();
 133
 134     /* I haven't been able to set the position of
 135        the dialog before it is shown, so I set the
 136        position in "realize" */
 137     gtk_widget_set_uposition( widget, win->m_x, win->m_y );
 138
 139     /* all this is for Motif Window Manager "hints" and is supposed to be
 140        recognized by other WM as well. not tested. */
 141     long decor = (long) GDK_DECOR_BORDER;
 142     long func = (long) GDK_FUNC_MOVE ;
 143
 144     /* Some WM don't display any border around the frame contents if
 145        used with these hints, so we add a resize border around it,
 146        without automatically allowinng it to be resized though.
 147
 148        This avoids the problem, but looks odd. What shall we do?
 149     */
 150     decor |= GDK_DECOR_RESIZEH;
 151
 152     if ((win->GetWindowStyle() & wxCAPTION) != 0)
 153         decor |= GDK_DECOR_TITLE;
 154     if ((win->GetWindowStyle() & wxSYSTEM_MENU) != 0)
 155     {
 156        decor |= GDK_DECOR_MENU;
 157        func |= GDK_FUNC_CLOSE;
 158     }
 159     if ((win->GetWindowStyle() & wxMINIMIZE_BOX) != 0)
 160     {
 161         func |= GDK_FUNC_MINIMIZE;
 162         decor |= GDK_DECOR_MINIMIZE;
 163     }
 164     if ((win->GetWindowStyle() & wxMAXIMIZE_BOX) != 0)
 165     {
 166         decor |= GDK_DECOR_MAXIMIZE;
 167         func |= GDK_FUNC_MAXIMIZE;
 168     }
 169     if ((win->GetWindowStyle() & wxRESIZE_BORDER) != 0)
 170     {
 171        func |= GDK_FUNC_RESIZE;
 172        decor |= GDK_DECOR_RESIZEH;
 173     }
 174     gdk_window_set_decorations( win->m_widget->window, (GdkWMDecoration)decor);
 175     gdk_window_set_functions( win->m_widget->window, (GdkWMFunction)func);
 176
 177     /* GTK's shrinking/growing policy */
 178     if ((win->GetWindowStyle() & wxRESIZE_BORDER) == 0)
 179         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 0, 0, 1);
 180     else
 181         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 182
 183     /* set size hints */
 184     gint flag = 0; // GDK_HINT_POS;
 185     if ((win->GetMinWidth() != -1) || (win->GetMinHeight() != -1)) flag |= GDK_HINT_MIN_SIZE;
 186     if ((win->GetMaxWidth() != -1) || (win->GetMaxHeight() != -1)) flag |= GDK_HINT_MAX_SIZE;
 187     if (flag)
 188     {
 189         gdk_window_set_hints( win->m_widget->window,
 190                               win->m_x, win->m_y,
 191                               win->GetMinWidth(), win->GetMinHeight(),
 192                               win->GetMaxWidth(), win->GetMaxHeight(),
 193                               flag );
 194     }
 195
 196     /* reset the icon */
 197     if (win->m_icon != wxNullIcon)
 198     {
 199         wxIcon icon( win->m_icon );
 200         win->m_icon = wxNullIcon;
 201         win->SetIcon( icon );
 202     }
 203
 204     return FALSE;
 205 }
 206
 207 //-----------------------------------------------------------------------------
 208 // InsertChild for wxDialog
 209 //-----------------------------------------------------------------------------
 210
 211 /* Callback for wxFrame. This very strange beast has to be used because
 212  * C++ has no virtual methods in a constructor. We have to emulate a
 213  * virtual function here as wxWindows requires different ways to insert
 214  * a child in container classes. */
 215
 216 static void wxInsertChildInDialog( wxDialog* parent, wxWindow* child )
 217 {
 218     gtk_pizza_put( GTK_PIZZA(parent->m_wxwindow),
 219                      GTK_WIDGET(child->m_widget),
 220                      child->m_x,
 221                      child->m_y,
 222                      child->m_width,
 223                      child->m_height );
 224
 225     if (parent->HasFlag(wxTAB_TRAVERSAL))
 226     {
 227         /* we now allow a window to get the focus as long as it
 228            doesn't have any children. */
 229         GTK_WIDGET_UNSET_FLAGS( parent->m_wxwindow, GTK_CAN_FOCUS );
 230     }
 231 }
 232
 233 //-----------------------------------------------------------------------------
 234 // wxDialog
 235 //-----------------------------------------------------------------------------
 236
 237 BEGIN_EVENT_TABLE(wxDialog,wxPanel)
 238     EVT_BUTTON  (wxID_OK,       wxDialog::OnOK)
 239     EVT_BUTTON  (wxID_CANCEL,   wxDialog::OnCancel)
 240     EVT_BUTTON  (wxID_APPLY,    wxDialog::OnApply)
 241     EVT_SIZE    (wxDialog::OnSize)
 242     EVT_CLOSE   (wxDialog::OnCloseWindow)
 243 END_EVENT_TABLE()
 244
 245 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxPanel)
 246
 247 void wxDialog::Init()
 248 {
 249     m_returnCode = 0;
 250     m_sizeSet = FALSE;
 251     m_modalShowing = FALSE;
 252     m_isFrame = TRUE;
 253 }
 254
 255 wxDialog::wxDialog( wxWindow *parent,
 256                     wxWindowID id, const wxString &title,
 257                     const wxPoint &pos, const wxSize &size,
 258                     long style, const wxString &name )
 259 {
 260     Init();
 261
 262     Create( parent, id, title, pos, size, style, name );
 263 }
 264
 265 bool wxDialog::Create( wxWindow *parent,
 266                        wxWindowID id, const wxString &title,
 267                        const wxPoint &pos, const wxSize &size,
 268                        long style, const wxString &name )
 269 {
 270     wxTopLevelWindows.Append( this );
 271
 272     m_needParent = FALSE;
 273
 274     if (!PreCreation( parent, pos, size ) ||
 275         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 276     {
 277         wxFAIL_MSG( wxT("wxDialog creation failed") );
 278         return FALSE;
 279     }
 280
 281     // All dialogs should really have this style
 282     m_windowStyle |= wxTAB_TRAVERSAL;
 283
 284     m_insertCallback = (wxInsertChildFunction) wxInsertChildInDialog;
 285
 286     m_widget = gtk_window_new( GTK_WINDOW_DIALOG );
 287
 288     if ((m_parent) && (GTK_IS_WINDOW(m_parent->m_widget)))
 289         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
 290
 291     if (!name.IsEmpty())
 292         gtk_window_set_wmclass( GTK_WINDOW(m_widget), name.mb_str(), name.mb_str() );
 293
 294     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 295
 296     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
 297         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 298
 299     m_wxwindow = gtk_pizza_new();
 300     gtk_widget_show( m_wxwindow );
 301     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 302
 303     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 304
 305     SetTitle( title );
 306
 307     if (m_parent) m_parent->AddChild( this );
 308
 309     PostCreation();
 310
 311     /*  we cannot set MWM hints  before the widget has
 312         been realized, so we do this directly after realization */
 313     gtk_signal_connect( GTK_OBJECT(m_widget), "realize",
 314                         GTK_SIGNAL_FUNC(gtk_dialog_realized_callback), (gpointer) this );
 315
 316     /* the user resized the frame by dragging etc. */
 317     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 318         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 319
 320     gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
 321         GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
 322
 323     /* disable native tab traversal */
 324     gtk_signal_connect( GTK_OBJECT(m_widget), "focus",
 325         GTK_SIGNAL_FUNC(gtk_dialog_focus_callback), (gpointer)this );
 326
 327     return TRUE;
 328 }
 329
 330 wxDialog::~wxDialog()
 331 {
 332     m_isBeingDeleted = TRUE;
 333
 334     wxTopLevelWindows.DeleteObject( this );
 335
 336     if (wxTheApp->GetTopWindow() == this)
 337     {
 338         wxTheApp->SetTopWindow( (wxWindow*) NULL );
 339     }
 340
 341     if ((wxTopLevelWindows.Number() == 0) &&
 342         (wxTheApp->GetExitOnFrameDelete()))
 343     {
 344         wxTheApp->ExitMainLoop();
 345     }
 346 }
 347
 348 void wxDialog::SetTitle( const wxString& title )
 349 {
 350     m_title = title;
 351     if (m_title.IsNull()) m_title = wxT("");
 352     gtk_window_set_title( GTK_WINDOW(m_widget), m_title.mbc_str() );
 353 }
 354
 355 wxString wxDialog::GetTitle() const
 356 {
 357     return (wxString&)m_title;
 358 }
 359
 360 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
 361 {
 362     if (Validate()) TransferDataFromWindow();
 363 }
 364
 365 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
 366 {
 367     if (IsModal())
 368     {
 369         EndModal(wxID_CANCEL);
 370     }
 371     else
 372     {
 373         SetReturnCode(wxID_CANCEL);
 374         Show(FALSE);
 375     }
 376 }
 377
 378 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 379 {
 380     if (Validate() && TransferDataFromWindow())
 381     {
 382         if (IsModal())
 383         {
 384             EndModal(wxID_OK);
 385         }
 386         else
 387         {
 388             SetReturnCode(wxID_OK);
 389             this->Show(FALSE);
 390         }
 391     }
 392 }
 393
 394 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 395 {
 396     // yes
 397 }
 398
 399 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 400 {
 401     // We'll send a Cancel message by default,
 402     // which may close the dialog.
 403     // Check for looping if the Cancel event handler calls Close().
 404
 405     // Note that if a cancel button and handler aren't present in the dialog,
 406     // nothing will happen when you close the dialog via the window manager, or
 407     // via Close().
 408     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 409     // created on the stack.
 410     // However, this does mean that calling dialog->Close() won't delete the dialog
 411     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 412     // sure to destroy the dialog.
 413     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 414
 415     static wxList s_closing;
 416
 417     if (s_closing.Member(this))
 418         return;   // no loops
 419
 420     s_closing.Append(this);
 421
 422     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 423     cancelEvent.SetEventObject( this );
 424     GetEventHandler()->ProcessEvent(cancelEvent);
 425     s_closing.DeleteObject(this);
 426 }
 427
 428 bool wxDialog::Destroy()
 429 {
 430     if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
 431
 432     return TRUE;
 433 }
 434
 435 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
 436 {
 437     wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
 438
 439 #if wxUSE_CONSTRAINTS
 440     if (GetAutoLayout())
 441     {
 442         Layout();
 443     }
 444     else
 445 #endif // wxUSE_CONSTRAINTS
 446     {
 447         /* no child: go out ! */
 448         if (!GetChildren().First()) return;
 449
 450         /* do we have exactly one child? */
 451         wxWindow *child = (wxWindow *) NULL;
 452         for(wxNode *node = GetChildren().First(); node; node = node->Next())
 453         {
 454             wxWindow *win = (wxWindow *)node->Data();
 455             if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
 456             {
 457                 /* it's the second one: do nothing */
 458                 if (child) return;
 459                 child = win;
 460             }
 461         }
 462
 463         /* yes: set it's size to fill all the frame */
 464         int client_x, client_y;
 465         GetClientSize( &client_x, &client_y );
 466         child->SetSize( 1, 1, client_x-2, client_y);
 467     }
 468 }
 469
 470 void wxDialog::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 471 {
 472     wxFAIL_MSG( wxT("DoMoveWindow called for wxDialog") );
 473 }
 474
 475 void wxDialog::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 476 {
 477     wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
 478     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid dialog") );
 479
 480     if (m_resizing) return; /* I don't like recursions */
 481     m_resizing = TRUE;
 482
 483     int old_x = m_x;
 484     int old_y = m_y;
 485
 486     int old_width = m_width;
 487     int old_height = m_height;
 488
 489     if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0)
 490     {
 491         if (x != -1) m_x = x;
 492         if (y != -1) m_y = y;
 493         if (width != -1) m_width = width;
 494         if (height != -1) m_height = height;
 495     }
 496     else
 497     {
 498         m_x = x;
 499         m_y = y;
 500         m_width = width;
 501         m_height = height;
 502     }
 503
 504 /*
 505     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 506     {
 507         if (width == -1) m_width = 80;
 508     }
 509
 510     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 511     {
 512        if (height == -1) m_height = 26;
 513     }
 514 */
 515
 516     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 517     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 518     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 519     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 520
 521     if ((m_x != -1) || (m_y != -1))
 522     {
 523         if ((m_x != old_x) || (m_y != old_y))
 524         {
 525             /* we set the position here and when showing the dialog
 526                for the first time in idle time */
 527             gtk_widget_set_uposition( m_widget, m_x, m_y );
 528         }
 529     }
 530
 531     if ((m_width != old_width) || (m_height != old_height))
 532     {
 533         /* actual resizing is deferred to GtkOnSize in idle time and
 534            when showing the dialog */
 535         m_sizeSet = FALSE;
 536     }
 537
 538     m_resizing = FALSE;
 539 }
 540
 541 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 542 {
 543     // due to a bug in gtk, x,y are always 0
 544     // m_x = x;
 545     // m_y = y;
 546
 547     if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
 548     if (!m_wxwindow) return;
 549
 550     m_width = width;
 551     m_height = height;
 552
 553     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 554     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 555     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 556     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 557
 558     /* we actually set the size of a frame here and no-where else */
 559     gtk_widget_set_usize( m_widget, m_width, m_height );
 560
 561     m_sizeSet = TRUE;
 562
 563     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 564     event.SetEventObject( this );
 565     GetEventHandler()->ProcessEvent( event );
 566 }
 567
 568 void wxDialog::OnInternalIdle()
 569 {
 570     if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
 571         GtkOnSize( m_x, m_y, m_width, m_height );
 572
 573     wxWindow::OnInternalIdle();
 574 }
 575
 576 bool wxDialog::Show( bool show )
 577 {
 578     if (!show && IsModal())
 579     {
 580         EndModal( wxID_CANCEL );
 581     }
 582
 583     if (show && !m_sizeSet)
 584     {
 585         /* by calling GtkOnSize here, we don't have to call
 586            either after showing the frame, which would entail
 587            much ugly flicker nor from within the size_allocate
 588            handler, because GTK 1.1.X forbids that. */
 589
 590         GtkOnSize( m_x, m_y, m_width, m_height );
 591     }
 592
 593     bool ret = wxWindow::Show( show );
 594
 595     if (show) InitDialog();
 596
 597     return ret;
 598 }
 599
 600 bool wxDialog::IsModal() const
 601 {
 602     return m_modalShowing;
 603 }
 604
 605 void wxDialog::SetModal( bool WXUNUSED(flag) )
 606 {
 607 /*
 608   if (flag)
 609     m_windowStyle |= wxDIALOG_MODAL;
 610   else
 611     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 612 */
 613     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 614 }
 615
 616 int wxDialog::ShowModal()
 617 {
 618     if (IsModal())
 619     {
 620        wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
 621        return GetReturnCode();
 622     }
 623
 624     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 625
 626     Show( TRUE );
 627
 628     m_modalShowing = TRUE;
 629
 630     g_openDialogs++;
 631
 632     gtk_grab_add( m_widget );
 633     gtk_main();
 634     gtk_grab_remove( m_widget );
 635
 636     g_openDialogs--;
 637
 638     return GetReturnCode();
 639 }
 640
 641 void wxDialog::EndModal( int retCode )
 642 {
 643     SetReturnCode( retCode );
 644
 645     if (!IsModal())
 646     {
 647         wxFAIL_MSG( wxT("wxDialog:EndModal called twice") );
 648         return;
 649     }
 650
 651     m_modalShowing = FALSE;
 652
 653     gtk_main_quit();
 654
 655     Show( FALSE );
 656 }
 657
 658 void wxDialog::InitDialog()
 659 {
 660     wxWindow::InitDialog();
 661 }
 662
 663 void wxDialog::SetIcon( const wxIcon &icon )
 664 {
 665     m_icon = icon;
 666     if (!icon.Ok()) return;
 667
 668     if (!m_widget->window) return;
 669
 670     wxMask *mask = icon.GetMask();
 671     GdkBitmap *bm = (GdkBitmap *) NULL;
 672     if (mask) bm = mask->GetBitmap();
 673
 674     gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
 675 }