src/gtk1/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     g_openDialogs++;
 271
 272     wxTopLevelWindows.Append( this );
 273
 274     m_needParent = FALSE;
 275
 276     if (!PreCreation( parent, pos, size ) ||
 277         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 278     {
 279         wxFAIL_MSG( wxT("wxDialog creation failed") );
 280         return FALSE;
 281     }
 282
 283     // All dialogs should really have this style
 284     m_windowStyle |= wxTAB_TRAVERSAL;
 285
 286     m_insertCallback = (wxInsertChildFunction) wxInsertChildInDialog;
 287
 288     m_widget = gtk_window_new( GTK_WINDOW_DIALOG );
 289
 290     if ((m_parent) && (GTK_IS_WINDOW(m_parent->m_widget)))
 291         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
 292
 293     if (!name.IsEmpty())
 294         gtk_window_set_wmclass( GTK_WINDOW(m_widget), name.mb_str(), name.mb_str() );
 295
 296     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 297
 298     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
 299         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 300
 301     m_wxwindow = gtk_pizza_new();
 302     gtk_widget_show( m_wxwindow );
 303     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 304
 305     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 306
 307     SetTitle( title );
 308
 309     if (m_parent) m_parent->AddChild( this );
 310
 311     PostCreation();
 312
 313     /*  we cannot set MWM hints  before the widget has
 314         been realized, so we do this directly after realization */
 315     gtk_signal_connect( GTK_OBJECT(m_widget), "realize",
 316                         GTK_SIGNAL_FUNC(gtk_dialog_realized_callback), (gpointer) this );
 317
 318     /* the user resized the frame by dragging etc. */
 319     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 320         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 321
 322     gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
 323         GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
 324
 325     /* disable native tab traversal */
 326     gtk_signal_connect( GTK_OBJECT(m_widget), "focus",
 327         GTK_SIGNAL_FUNC(gtk_dialog_focus_callback), (gpointer)this );
 328
 329     return TRUE;
 330 }
 331
 332 wxDialog::~wxDialog()
 333 {
 334     m_isBeingDeleted = TRUE;
 335
 336     wxTopLevelWindows.DeleteObject( this );
 337
 338     if (wxTheApp->GetTopWindow() == this)
 339     {
 340         wxTheApp->SetTopWindow( (wxWindow*) NULL );
 341     }
 342
 343     if ((wxTopLevelWindows.Number() == 0) &&
 344         (wxTheApp->GetExitOnFrameDelete()))
 345     {
 346         wxTheApp->ExitMainLoop();
 347     }
 348
 349     g_openDialogs--;
 350 }
 351
 352 void wxDialog::SetTitle( const wxString& title )
 353 {
 354     m_title = title;
 355     if (m_title.IsNull()) m_title = wxT("");
 356     gtk_window_set_title( GTK_WINDOW(m_widget), m_title.mbc_str() );
 357 }
 358
 359 wxString wxDialog::GetTitle() const
 360 {
 361     return (wxString&)m_title;
 362 }
 363
 364 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
 365 {
 366     if (Validate()) TransferDataFromWindow();
 367 }
 368
 369 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
 370 {
 371     if (IsModal())
 372     {
 373         EndModal(wxID_CANCEL);
 374     }
 375     else
 376     {
 377         SetReturnCode(wxID_CANCEL);
 378         Show(FALSE);
 379     }
 380 }
 381
 382 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 383 {
 384     if (Validate() && TransferDataFromWindow())
 385     {
 386         if (IsModal())
 387         {
 388             EndModal(wxID_OK);
 389         }
 390         else
 391         {
 392             SetReturnCode(wxID_OK);
 393             this->Show(FALSE);
 394         }
 395     }
 396 }
 397
 398 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 399 {
 400     // yes
 401 }
 402
 403 void wxDialog::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
 404 {
 405     // We'll send a Cancel message by default,
 406     // which may close the dialog.
 407     // Check for looping if the Cancel event handler calls Close().
 408
 409     // Note that if a cancel button and handler aren't present in the dialog,
 410     // nothing will happen when you close the dialog via the window manager, or
 411     // via Close().
 412     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 413     // created on the stack.
 414     // However, this does mean that calling dialog->Close() won't delete the dialog
 415     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 416     // sure to destroy the dialog.
 417     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 418
 419     static wxList s_closing;
 420
 421     if (s_closing.Member(this))
 422         return;   // no loops
 423
 424     s_closing.Append(this);
 425
 426     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 427     cancelEvent.SetEventObject( this );
 428     GetEventHandler()->ProcessEvent(cancelEvent);
 429     s_closing.DeleteObject(this);
 430 }
 431
 432 bool wxDialog::Destroy()
 433 {
 434     if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
 435
 436     return TRUE;
 437 }
 438
 439 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
 440 {
 441     wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
 442
 443 #if wxUSE_CONSTRAINTS
 444     if (GetAutoLayout())
 445     {
 446         Layout();
 447     }
 448     else
 449 #endif // wxUSE_CONSTRAINTS
 450     {
 451         /* no child: go out ! */
 452         if (!GetChildren().First()) return;
 453
 454         /* do we have exactly one child? */
 455         wxWindow *child = (wxWindow *) NULL;
 456         for(wxNode *node = GetChildren().First(); node; node = node->Next())
 457         {
 458             wxWindow *win = (wxWindow *)node->Data();
 459             if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
 460             {
 461                 /* it's the second one: do nothing */
 462                 if (child) return;
 463                 child = win;
 464             }
 465         }
 466
 467         /* yes: set it's size to fill all the frame */
 468         int client_x, client_y;
 469         GetClientSize( &client_x, &client_y );
 470         child->SetSize( 1, 1, client_x-2, client_y);
 471     }
 472 }
 473
 474 void wxDialog::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 475 {
 476     wxFAIL_MSG( wxT("DoMoveWindow called for wxDialog") );
 477 }
 478
 479 void wxDialog::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 480 {
 481     wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
 482     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid dialog") );
 483
 484     if (m_resizing) return; /* I don't like recursions */
 485     m_resizing = TRUE;
 486
 487     int old_x = m_x;
 488     int old_y = m_y;
 489
 490     int old_width = m_width;
 491     int old_height = m_height;
 492
 493     if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0)
 494     {
 495         if (x != -1) m_x = x;
 496         if (y != -1) m_y = y;
 497         if (width != -1) m_width = width;
 498         if (height != -1) m_height = height;
 499     }
 500     else
 501     {
 502         m_x = x;
 503         m_y = y;
 504         m_width = width;
 505         m_height = height;
 506     }
 507
 508 /*
 509     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 510     {
 511         if (width == -1) m_width = 80;
 512     }
 513
 514     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 515     {
 516        if (height == -1) m_height = 26;
 517     }
 518 */
 519
 520     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 521     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 522     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 523     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 524
 525     if ((m_x != -1) || (m_y != -1))
 526     {
 527         if ((m_x != old_x) || (m_y != old_y))
 528         {
 529             /* we set the position here and when showing the dialog
 530                for the first time in idle time */
 531             gtk_widget_set_uposition( m_widget, m_x, m_y );
 532         }
 533     }
 534
 535     if ((m_width != old_width) || (m_height != old_height))
 536     {
 537         /* actual resizing is deferred to GtkOnSize in idle time and
 538            when showing the dialog */
 539         m_sizeSet = FALSE;
 540     }
 541
 542     m_resizing = FALSE;
 543 }
 544
 545 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 546 {
 547     // due to a bug in gtk, x,y are always 0
 548     // m_x = x;
 549     // m_y = y;
 550
 551     if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
 552     if (!m_wxwindow) return;
 553
 554     m_width = width;
 555     m_height = height;
 556
 557     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 558     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 559     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 560     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 561
 562     /* we actually set the size of a frame here and no-where else */
 563     gtk_widget_set_usize( m_widget, m_width, m_height );
 564
 565     m_sizeSet = TRUE;
 566
 567     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 568     event.SetEventObject( this );
 569     GetEventHandler()->ProcessEvent( event );
 570 }
 571
 572 void wxDialog::OnInternalIdle()
 573 {
 574     if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
 575         GtkOnSize( m_x, m_y, m_width, m_height );
 576
 577     wxWindow::OnInternalIdle();
 578 }
 579
 580 bool wxDialog::Show( bool show )
 581 {
 582     if (!show && IsModal())
 583     {
 584         EndModal( wxID_CANCEL );
 585     }
 586
 587     if (show && !m_sizeSet)
 588     {
 589         /* by calling GtkOnSize here, we don't have to call
 590            either after showing the frame, which would entail
 591            much ugly flicker nor from within the size_allocate
 592            handler, because GTK 1.1.X forbids that. */
 593
 594         GtkOnSize( m_x, m_y, m_width, m_height );
 595     }
 596
 597     bool ret = wxWindow::Show( show );
 598
 599     if (show) InitDialog();
 600
 601     return ret;
 602 }
 603
 604 bool wxDialog::IsModal() const
 605 {
 606     return m_modalShowing;
 607 }
 608
 609 void wxDialog::SetModal( bool WXUNUSED(flag) )
 610 {
 611 /*
 612   if (flag)
 613     m_windowStyle |= wxDIALOG_MODAL;
 614   else
 615     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 616 */
 617     wxFAIL_MSG( wxT("wxDialog:SetModal obsolete now") );
 618 }
 619
 620 int wxDialog::ShowModal()
 621 {
 622     if (IsModal())
 623     {
 624        wxFAIL_MSG( wxT("wxDialog:ShowModal called twice") );
 625        return GetReturnCode();
 626     }
 627
 628     wxBusyCursorSuspender cs; // temporarily suppress the busy cursor
 629
 630     Show( TRUE );
 631
 632     m_modalShowing = TRUE;
 633
 634     gtk_grab_add( m_widget );
 635     gtk_main();
 636     gtk_grab_remove( m_widget );
 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 }