src/gtk/toplevel.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/toplevel.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 #ifdef __VMS
  22 #define XIconifyWindow XICONIFYWINDOW
  23 #endif
  24
  25 #include "wx/toplevel.h"
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/frame.h"
  29     #include "wx/icon.h"
  30     #include "wx/log.h"
  31     #include "wx/app.h"
  32 #endif
  33
  34 #include "wx/gtk/private.h"
  35 #include "wx/evtloop.h"
  36 #include "wx/sysopt.h"
  37
  38 #include <gtk/gtk.h>
  39 #include <gdk/gdkx.h>
  40
  41 #include "wx/gtk/win_gtk.h"
  42
  43 #include "wx/unix/utilsx11.h"
  44
  45 // XA_CARDINAL
  46 #include <X11/Xatom.h>
  47
  48 #if wxUSE_LIBHILDON
  49     #include <hildon-widgets/hildon-program.h>
  50     #include <hildon-widgets/hildon-window.h>
  51 #endif // wxUSE_LIBHILDON
  52
  53 // ----------------------------------------------------------------------------
  54 // data
  55 // ----------------------------------------------------------------------------
  56
  57 extern int              g_openDialogs;
  58 extern wxWindowGTK     *g_delayedFocus;
  59
  60 // the frame that is currently active (i.e. its child has focus). It is
  61 // used to generate wxActivateEvents
  62 static wxTopLevelWindowGTK *g_activeFrame = (wxTopLevelWindowGTK*) NULL;
  63 static wxTopLevelWindowGTK *g_lastActiveFrame = (wxTopLevelWindowGTK*) NULL;
  64
  65 // if we detect that the app has got/lost the focus, we set this variable to
  66 // either TRUE or FALSE and an activate event will be sent during the next
  67 // OnIdle() call and it is reset to -1: this value means that we shouldn't
  68 // send any activate events at all
  69 static int g_sendActivateEvent = -1;
  70
  71 //-----------------------------------------------------------------------------
  72 // RequestUserAttention related functions
  73 //-----------------------------------------------------------------------------
  74
  75 extern "C" {
  76 static void wxgtk_window_set_urgency_hint (GtkWindow *win,
  77                                            gboolean setting)
  78 {
  79     wxASSERT_MSG( GTK_WIDGET_REALIZED(win), wxT("wxgtk_window_set_urgency_hint: GdkWindow not realized") );
  80     GdkWindow *window = GTK_WIDGET(win)->window;
  81     XWMHints *wm_hints;
  82
  83     wm_hints = XGetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window));
  84
  85     if (!wm_hints)
  86         wm_hints = XAllocWMHints();
  87
  88     if (setting)
  89         wm_hints->flags |= XUrgencyHint;
  90     else
  91         wm_hints->flags &= ~XUrgencyHint;
  92
  93     XSetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window), wm_hints);
  94     XFree(wm_hints);
  95 }
  96
  97 static gboolean gtk_frame_urgency_timer_callback( wxTopLevelWindowGTK *win )
  98 {
  99 #if GTK_CHECK_VERSION(2,7,0)
 100     if(!gtk_check_version(2,7,0))
 101         gtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
 102     else
 103 #endif
 104         wxgtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
 105
 106     win->m_urgency_hint = -2;
 107     return FALSE;
 108 }
 109 }
 110
 111 //-----------------------------------------------------------------------------
 112 // "focus_in_event"
 113 //-----------------------------------------------------------------------------
 114
 115 extern "C" {
 116 static gboolean gtk_frame_focus_in_callback( GtkWidget *widget,
 117                                          GdkEvent *WXUNUSED(event),
 118                                          wxTopLevelWindowGTK *win )
 119 {
 120     switch ( g_sendActivateEvent )
 121     {
 122         case -1:
 123             // we've got focus from outside, synthetize wxActivateEvent
 124             g_sendActivateEvent = 1;
 125             break;
 126
 127         case 0:
 128             // another our window just lost focus, it was already ours before
 129             // - don't send any wxActivateEvent
 130             g_sendActivateEvent = -1;
 131             break;
 132     }
 133
 134     g_activeFrame = win;
 135     g_lastActiveFrame = g_activeFrame;
 136
 137     // wxPrintf( wxT("active: %s\n"), win->GetTitle().c_str() );
 138
 139     // MR: wxRequestUserAttention related block
 140     switch( win->m_urgency_hint )
 141     {
 142         default:
 143             g_source_remove( win->m_urgency_hint );
 144             // no break, fallthrough to remove hint too
 145         case -1:
 146 #if GTK_CHECK_VERSION(2,7,0)
 147             if(!gtk_check_version(2,7,0))
 148                 gtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
 149             else
 150 #endif
 151             {
 152                 wxgtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
 153             }
 154
 155             win->m_urgency_hint = -2;
 156             break;
 157
 158         case -2: break;
 159     }
 160
 161     wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 162     wxActivateEvent event(wxEVT_ACTIVATE, true, g_activeFrame->GetId());
 163     event.SetEventObject(g_activeFrame);
 164     g_activeFrame->GetEventHandler()->ProcessEvent(event);
 165
 166     return FALSE;
 167 }
 168 }
 169
 170 //-----------------------------------------------------------------------------
 171 // "focus_out_event"
 172 //-----------------------------------------------------------------------------
 173
 174 extern "C" {
 175 static
 176 gboolean gtk_frame_focus_out_callback(GtkWidget * WXUNUSED(widget),
 177                                       GdkEventFocus *WXUNUSED(gdk_event),
 178                                       wxTopLevelWindowGTK * WXUNUSED(win))
 179 {
 180     // if the focus goes out of our app alltogether, OnIdle() will send
 181     // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
 182     // g_sendActivateEvent to -1
 183     g_sendActivateEvent = 0;
 184
 185     // wxASSERT_MSG( (g_activeFrame == win), wxT("TLW deactivatd although it wasn't active") );
 186
 187     // wxPrintf( wxT("inactive: %s\n"), win->GetTitle().c_str() );
 188
 189     if (g_activeFrame)
 190     {
 191         wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 192         wxActivateEvent event(wxEVT_ACTIVATE, false, g_activeFrame->GetId());
 193         event.SetEventObject(g_activeFrame);
 194         g_activeFrame->GetEventHandler()->ProcessEvent(event);
 195
 196         g_activeFrame = NULL;
 197     }
 198
 199     return FALSE;
 200 }
 201 }
 202
 203 //-----------------------------------------------------------------------------
 204
 205 // Get cached size of WM decorations for given GdkWMDecoration.
 206 static wxSize& GetDecorSize(int decor)
 207 {
 208     // In testing, only the title bar and GDK_DECOR_BORDER made a difference.
 209     // 4 possible combinations of title bar and border
 210     static wxSize size[4];
 211
 212     int index = 0;
 213     // title bar
 214     if (decor & (GDK_DECOR_MENU | GDK_DECOR_MINIMIZE | GDK_DECOR_MAXIMIZE | GDK_DECOR_TITLE))
 215         index = 1;
 216     // border
 217     if (decor & GDK_DECOR_BORDER)
 218         index |= 2;
 219     return size[index];
 220 }
 221
 222 //-----------------------------------------------------------------------------
 223 // "size_allocate" from m_wxwindow
 224 //-----------------------------------------------------------------------------
 225
 226 extern "C" {
 227 static void
 228 size_allocate(GtkWidget*, GtkAllocation* alloc, wxTopLevelWindowGTK* win)
 229 {
 230     if (win->m_oldClientWidth  != alloc->width ||
 231         win->m_oldClientHeight != alloc->height)
 232     {
 233         win->m_oldClientWidth  = alloc->width;
 234         win->m_oldClientHeight = alloc->height;
 235         wxSize sizeDecor;
 236         if (!win->IsFullScreen())
 237             sizeDecor = GetDecorSize(win->m_gdkDecor);
 238         win->m_width  = win->m_widget->allocation.width  + sizeDecor.x;
 239         win->m_height = win->m_widget->allocation.height + sizeDecor.y;
 240         if (!win->IsIconized())
 241         {
 242             wxSizeEvent event(win->GetSize(), win->GetId());
 243             event.SetEventObject(win);
 244             win->GetEventHandler()->ProcessEvent(event);
 245         }
 246         // else the window is currently unmapped, don't generate size events
 247     }
 248 }
 249 }
 250
 251 // ----------------------------------------------------------------------------
 252 // "size_request"
 253 // ----------------------------------------------------------------------------
 254
 255 extern "C" {
 256 static
 257 void wxgtk_tlw_size_request_callback(GtkWidget * WXUNUSED(widget),
 258                                      GtkRequisition *requisition,
 259                                      wxTopLevelWindowGTK *win)
 260 {
 261     // we must return the size of the window without WM decorations, otherwise
 262     // GTK+ gets confused, so don't call just GetSize() here
 263     win->GTKDoGetSize(&requisition->width, &requisition->height);
 264 }
 265 }
 266
 267 //-----------------------------------------------------------------------------
 268 // "delete_event"
 269 //-----------------------------------------------------------------------------
 270
 271 extern "C" {
 272 static gboolean
 273 gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget),
 274                            GdkEvent *WXUNUSED(event),
 275                            wxTopLevelWindowGTK *win )
 276 {
 277     if (win->IsEnabled() &&
 278         (g_openDialogs == 0 || (win->GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ||
 279          win->IsGrabbed()))
 280         win->Close();
 281
 282     return TRUE;
 283 }
 284 }
 285
 286
 287 //-----------------------------------------------------------------------------
 288 // "configure_event"
 289 //-----------------------------------------------------------------------------
 290
 291 extern "C" {
 292 static gboolean
 293 gtk_frame_configure_callback( GtkWidget* widget,
 294                               GdkEventConfigure *WXUNUSED(event),
 295                               wxTopLevelWindowGTK *win )
 296 {
 297     if (!win->m_hasVMT || !win->IsShown())
 298         return FALSE;
 299
 300     wxPoint point;
 301     gtk_window_get_position((GtkWindow*)widget, &point.x, &point.y);
 302
 303     win->m_x = point.x;
 304     win->m_y = point.y;
 305     wxMoveEvent mevent(point, win->GetId());
 306     mevent.SetEventObject( win );
 307     win->GetEventHandler()->ProcessEvent( mevent );
 308
 309     return FALSE;
 310 }
 311 }
 312
 313 //-----------------------------------------------------------------------------
 314 // "realize" from m_widget
 315 //-----------------------------------------------------------------------------
 316
 317 // we cannot MWM hints and icons before the widget has been realized,
 318 // so we do this directly after realization
 319
 320 extern "C" {
 321 static void
 322 gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
 323                              wxTopLevelWindowGTK *win )
 324 {
 325     // All this is for Motif Window Manager "hints" and is supposed to be
 326     // recognized by other WM as well. Not tested.
 327     gdk_window_set_decorations(win->m_widget->window,
 328                                (GdkWMDecoration)win->m_gdkDecor);
 329     gdk_window_set_functions(win->m_widget->window,
 330                                (GdkWMFunction)win->m_gdkFunc);
 331
 332     // GTK's shrinking/growing policy
 333     if ((win->m_gdkFunc & GDK_FUNC_RESIZE) == 0)
 334         gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
 335     else
 336         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 337
 338     // reset the icon
 339     wxIconBundle iconsOld = win->GetIcons();
 340     if ( !iconsOld.IsEmpty() )
 341     {
 342         win->SetIcon( wxNullIcon );
 343         win->SetIcons( iconsOld );
 344     }
 345 }
 346 }
 347
 348 //-----------------------------------------------------------------------------
 349 // "map_event" from m_widget
 350 //-----------------------------------------------------------------------------
 351
 352 extern "C" {
 353 static gboolean
 354 gtk_frame_map_callback( GtkWidget* widget,
 355                         GdkEvent * WXUNUSED(event),
 356                         wxTopLevelWindow *win )
 357 {
 358     // Calculate size of WM decorations.
 359     // Done here in case WM does not support the _NET_FRAME_EXTENTS property.
 360     if (win->IsDecorCacheable() && !win->IsFullScreen())
 361     {
 362         GdkRectangle rect;
 363         gdk_window_get_frame_extents(widget->window, &rect);
 364         int w, h;
 365         gdk_drawable_get_size(widget->window, &w, &h);
 366         wxSize& decorSize = GetDecorSize(win->m_gdkDecor);
 367         const wxSize size = wxSize(rect.width - w, rect.height - h);
 368         if (decorSize.x != size.x || decorSize.y != size.y)
 369         {
 370             // Update window size and frame extents cache
 371             win->m_width = rect.width;
 372             win->m_height = rect.height;
 373             decorSize = size;
 374         }
 375     }
 376
 377     const bool wasIconized = win->IsIconized();
 378
 379     win->SetIconizeState(false);
 380
 381     if (wasIconized)
 382     {
 383         // Because GetClientSize() returns (0,0) when IsIconized() is true,
 384         // a size event must be generated, just in case GetClientSize() was
 385         // called while iconized. This specifically happens when restoring a
 386         // tlw that was "rolled up" with some WMs.
 387         // Queue a resize rather than sending size event directly to allow
 388         // children to be made visible first.
 389         win->m_oldClientWidth = 0;
 390         gtk_widget_queue_resize(win->m_wxwindow);
 391     }
 392
 393     return false;
 394 }
 395 }
 396
 397 //-----------------------------------------------------------------------------
 398 // "unmap_event" from m_widget
 399 //-----------------------------------------------------------------------------
 400
 401 extern "C" {
 402 static gboolean
 403 gtk_frame_unmap_callback( GtkWidget * WXUNUSED(widget),
 404                           GdkEvent * WXUNUSED(event),
 405                           wxTopLevelWindow *win )
 406 {
 407     win->SetIconizeState(true);
 408     return false;
 409 }
 410 }
 411
 412 //-----------------------------------------------------------------------------
 413 // "property_notify_event" from m_widget
 414 //-----------------------------------------------------------------------------
 415
 416 extern "C" {
 417 static gboolean property_notify_event(
 418     GtkWidget*, GdkEventProperty* event, wxTopLevelWindowGTK* win)
 419 {
 420     // Watch for changes to _NET_FRAME_EXTENTS property
 421     static GdkAtom property = gdk_atom_intern("_NET_FRAME_EXTENTS", false);
 422     if (event->state == GDK_PROPERTY_NEW_VALUE && event->atom == property &&
 423         win->IsDecorCacheable() && !win->IsFullScreen())
 424     {
 425         Atom xproperty = gdk_x11_atom_to_xatom_for_display(
 426                             gdk_drawable_get_display(event->window), property);
 427         Atom type;
 428         int format;
 429         gulong nitems, bytes_after;
 430         long* data = NULL;
 431         Status status = XGetWindowProperty(
 432             gdk_x11_drawable_get_xdisplay(event->window),
 433             gdk_x11_drawable_get_xid(event->window),
 434             xproperty,
 435             0, 4, false, XA_CARDINAL,
 436             &type, &format, &nitems, &bytes_after, (guchar**)&data);
 437         if (status == Success && data && nitems == 4)
 438         {
 439             wxSize& decorSize = GetDecorSize(win->m_gdkDecor);
 440             const wxSize size =
 441                 wxSize(int(data[0] + data[1]), int(data[2] + data[3]));
 442             if (decorSize.x != size.x || decorSize.y != size.y)
 443             {
 444                 // Update window size and frame extents cache
 445                 win->m_width  += size.x - decorSize.x;
 446                 win->m_height += size.y - decorSize.y;
 447                 if (win->m_width  < 0) win->m_width  = 0;
 448                 if (win->m_height < 0) win->m_height = 0;
 449                 decorSize = size;
 450                 win->m_oldClientWidth = 0;
 451                 gtk_widget_queue_resize(win->m_wxwindow);
 452             }
 453         }
 454         if (data)
 455             XFree(data);
 456     }
 457     return false;
 458 }
 459 }
 460
 461 BEGIN_EVENT_TABLE(wxTopLevelWindowGTK, wxTopLevelWindowBase)
 462     EVT_SYS_COLOUR_CHANGED(wxTopLevelWindowGTK::OnSysColourChanged)
 463 END_EVENT_TABLE()
 464
 465
 466 // ----------------------------------------------------------------------------
 467 // wxTopLevelWindowGTK creation
 468 // ----------------------------------------------------------------------------
 469
 470 void wxTopLevelWindowGTK::Init()
 471 {
 472     m_mainWidget = (GtkWidget*) NULL;
 473     m_isIconized = false;
 474     m_fsIsShowing = false;
 475     m_themeEnabled = true;
 476     m_gdkDecor = m_gdkFunc = 0;
 477     m_grabbed = false;
 478
 479     m_urgency_hint = -2;
 480 }
 481
 482 bool wxTopLevelWindowGTK::Create( wxWindow *parent,
 483                                   wxWindowID id,
 484                                   const wxString& title,
 485                                   const wxPoint& pos,
 486                                   const wxSize& sizeOrig,
 487                                   long style,
 488                                   const wxString &name )
 489 {
 490     // always create a frame of some reasonable, even if arbitrary, size (at
 491     // least for MSW compatibility)
 492     wxSize size = sizeOrig;
 493     size.x = WidthDefault(size.x);
 494     size.y = HeightDefault(size.y);
 495
 496     wxTopLevelWindows.Append( this );
 497
 498     if (!PreCreation( parent, pos, size ) ||
 499         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 500     {
 501         wxFAIL_MSG( wxT("wxTopLevelWindowGTK creation failed") );
 502         return false;
 503     }
 504
 505     m_title = title;
 506
 507     // NB: m_widget may be !=NULL if it was created by derived class' Create,
 508     //     e.g. in wxTaskBarIconAreaGTK
 509     if (m_widget == NULL)
 510     {
 511 #if wxUSE_LIBHILDON
 512         // we must create HildonWindow and not a normal GtkWindow as the latter
 513         // doesn't look correctly in Maemo environment and it must also be
 514         // registered with the main program object
 515         m_widget = hildon_window_new();
 516         hildon_program_add_window(wxTheApp->GetHildonProgram(),
 517                                   HILDON_WINDOW(m_widget));
 518 #else // !wxUSE_LIBHILDON
 519         m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 520         if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
 521         {
 522             // Tell WM that this is a dialog window and make it center
 523             // on parent by default (this is what GtkDialog ctor does):
 524             gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 525                                      GDK_WINDOW_TYPE_HINT_DIALOG);
 526             gtk_window_set_position(GTK_WINDOW(m_widget),
 527                                     GTK_WIN_POS_CENTER_ON_PARENT);
 528         }
 529         else
 530         {
 531             if (style & wxFRAME_TOOL_WINDOW)
 532             {
 533                 gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 534                                          GDK_WINDOW_TYPE_HINT_UTILITY);
 535
 536                 // On some WMs, like KDE, a TOOL_WINDOW will still show
 537                 // on the taskbar, but on Gnome a TOOL_WINDOW will not.
 538                 // For consistency between WMs and with Windows, we
 539                 // should set the NO_TASKBAR flag which will apply
 540                 // the set_skip_taskbar_hint if it is available,
 541                 // ensuring no taskbar entry will appear.
 542                 style |= wxFRAME_NO_TASKBAR;
 543             }
 544         }
 545 #endif // wxUSE_LIBHILDON/!wxUSE_LIBHILDON
 546     }
 547
 548     wxWindow *topParent = wxGetTopLevelParent(m_parent);
 549     if (topParent && (((GTK_IS_WINDOW(topParent->m_widget)) &&
 550                        (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)) ||
 551                        (style & wxFRAME_FLOAT_ON_PARENT)))
 552     {
 553         gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 554                                       GTK_WINDOW(topParent->m_widget) );
 555     }
 556
 557     if (style & wxFRAME_NO_TASKBAR)
 558     {
 559         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), TRUE);
 560     }
 561
 562     if (style & wxSTAY_ON_TOP)
 563     {
 564         gtk_window_set_keep_above(GTK_WINDOW(m_widget), TRUE);
 565     }
 566
 567 #if 0
 568     if (!name.empty())
 569         gtk_window_set_role( GTK_WINDOW(m_widget), wxGTK_CONV( name ) );
 570 #endif
 571
 572     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
 573     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 574
 575     g_signal_connect (m_widget, "delete_event",
 576                       G_CALLBACK (gtk_frame_delete_callback), this);
 577
 578     // m_mainWidget is a GtkVBox, holding the bars and client area (m_wxwindow)
 579     m_mainWidget = gtk_vbox_new(false, 0);
 580     gtk_widget_show( m_mainWidget );
 581     GTK_WIDGET_UNSET_FLAGS( m_mainWidget, GTK_CAN_FOCUS );
 582     gtk_container_add( GTK_CONTAINER(m_widget), m_mainWidget );
 583
 584     // m_wxwindow is the client area
 585     m_wxwindow = wxPizza::New();
 586     gtk_widget_show( m_wxwindow );
 587     gtk_container_add( GTK_CONTAINER(m_mainWidget), m_wxwindow );
 588
 589     // we donm't allow the frame to get the focus as otherwise
 590     // the frame will grab it at arbitrary focus changes
 591     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 592
 593     if (m_parent) m_parent->AddChild( this );
 594
 595     g_signal_connect(m_wxwindow, "size_allocate",
 596         G_CALLBACK(size_allocate), this);
 597
 598     g_signal_connect (m_widget, "size_request",
 599                       G_CALLBACK (wxgtk_tlw_size_request_callback), this);
 600     PostCreation();
 601
 602     if ((m_x != -1) || (m_y != -1))
 603         gtk_widget_set_uposition( m_widget, m_x, m_y );
 604
 605     //  we cannot set MWM hints and icons before the widget has
 606     //  been realized, so we do this directly after realization
 607     g_signal_connect (m_widget, "realize",
 608                       G_CALLBACK (gtk_frame_realized_callback), this);
 609
 610     // map and unmap for iconized state
 611     g_signal_connect (m_widget, "map_event",
 612                       G_CALLBACK (gtk_frame_map_callback), this);
 613     g_signal_connect (m_widget, "unmap_event",
 614                       G_CALLBACK (gtk_frame_unmap_callback), this);
 615
 616     // for wxMoveEvent
 617     g_signal_connect (m_widget, "configure_event",
 618                       G_CALLBACK (gtk_frame_configure_callback), this);
 619
 620     // activation
 621     g_signal_connect_after (m_widget, "focus_in_event",
 622                       G_CALLBACK (gtk_frame_focus_in_callback), this);
 623     g_signal_connect_after (m_widget, "focus_out_event",
 624                       G_CALLBACK (gtk_frame_focus_out_callback), this);
 625
 626     gtk_widget_add_events(m_widget, GDK_PROPERTY_CHANGE_MASK);
 627     g_signal_connect(m_widget, "property_notify_event",
 628         G_CALLBACK(property_notify_event), this);
 629
 630     // decorations
 631     if ((style & wxSIMPLE_BORDER) || (style & wxNO_BORDER))
 632     {
 633         m_gdkDecor = 0;
 634         m_gdkFunc = 0;
 635     }
 636     else
 637     {
 638         m_gdkDecor = GDK_DECOR_BORDER;
 639         m_gdkFunc = GDK_FUNC_MOVE;
 640
 641         // All this is for Motif Window Manager "hints" and is supposed to be
 642         // recognized by other WMs as well.
 643         if ((style & wxCAPTION) != 0)
 644         {
 645             m_gdkDecor |= GDK_DECOR_TITLE;
 646         }
 647         if ((style & wxCLOSE_BOX) != 0)
 648         {
 649             m_gdkFunc |= GDK_FUNC_CLOSE;
 650         }
 651         if ((style & wxSYSTEM_MENU) != 0)
 652         {
 653             m_gdkDecor |= GDK_DECOR_MENU;
 654         }
 655         if ((style & wxMINIMIZE_BOX) != 0)
 656         {
 657             m_gdkFunc |= GDK_FUNC_MINIMIZE;
 658             m_gdkDecor |= GDK_DECOR_MINIMIZE;
 659         }
 660         if ((style & wxMAXIMIZE_BOX) != 0)
 661         {
 662             m_gdkFunc |= GDK_FUNC_MAXIMIZE;
 663             m_gdkDecor |= GDK_DECOR_MAXIMIZE;
 664         }
 665         if ((style & wxRESIZE_BORDER) != 0)
 666         {
 667            m_gdkFunc |= GDK_FUNC_RESIZE;
 668            m_gdkDecor |= GDK_DECOR_RESIZEH;
 669         }
 670     }
 671
 672     // m_gdkDecor needs to be set before calling GTKDoGetSize
 673     int w, h;
 674     GTKDoGetSize(&w, &h);
 675     gtk_window_set_default_size(GTK_WINDOW(m_widget), w, h);
 676
 677     return true;
 678 }
 679
 680 wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
 681 {
 682 #if wxUSE_LIBHILDON
 683     hildon_program_remove_window(wxTheApp->GetHildonProgram(),
 684                                  HILDON_WINDOW(m_widget));
 685 #endif // wxUSE_LIBHILDON
 686
 687     if (m_grabbed)
 688     {
 689         wxFAIL_MSG(_T("Window still grabbed"));
 690         RemoveGrab();
 691     }
 692
 693     m_isBeingDeleted = true;
 694
 695     // it may also be GtkScrolledWindow in the case of an MDI child
 696     if (GTK_IS_WINDOW(m_widget))
 697     {
 698         gtk_window_set_focus( GTK_WINDOW(m_widget), NULL );
 699     }
 700
 701     if (g_activeFrame == this)
 702         g_activeFrame = NULL;
 703     if (g_lastActiveFrame == this)
 704         g_lastActiveFrame = NULL;
 705 }
 706
 707 bool wxTopLevelWindowGTK::EnableCloseButton( bool enable )
 708 {
 709     if (enable)
 710         m_gdkFunc |= GDK_FUNC_CLOSE;
 711     else
 712         m_gdkFunc &= ~GDK_FUNC_CLOSE;
 713
 714     if (GTK_WIDGET_REALIZED(m_widget) && (m_widget->window))
 715         gdk_window_set_functions( m_widget->window, (GdkWMFunction)m_gdkFunc );
 716
 717     return true;
 718 }
 719
 720 bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long)
 721 {
 722     if (show == m_fsIsShowing)
 723         return false; // return what?
 724
 725     m_fsIsShowing = show;
 726
 727     wxX11FullScreenMethod method =
 728         wxGetFullScreenMethodX11((WXDisplay*)GDK_DISPLAY(),
 729                                  (WXWindow)GDK_ROOT_WINDOW());
 730
 731     // NB: gtk_window_fullscreen() uses freedesktop.org's WMspec extensions
 732     //     to switch to fullscreen, which is not always available. We must
 733     //     check if WM supports the spec and use legacy methods if it
 734     //     doesn't.
 735     if ( method == wxX11_FS_WMSPEC )
 736     {
 737         if (show)
 738             gtk_window_fullscreen( GTK_WINDOW( m_widget ) );
 739         else
 740             gtk_window_unfullscreen( GTK_WINDOW( m_widget ) );
 741     }
 742     else
 743     {
 744         GdkWindow *window = m_widget->window;
 745
 746         if (show)
 747         {
 748             GetPosition( &m_fsSaveFrame.x, &m_fsSaveFrame.y );
 749             GetSize( &m_fsSaveFrame.width, &m_fsSaveFrame.height );
 750
 751             int screen_width,screen_height;
 752             wxDisplaySize( &screen_width, &screen_height );
 753
 754             gint client_x, client_y, root_x, root_y;
 755             gint width, height;
 756
 757             m_fsSaveGdkFunc = m_gdkFunc;
 758             m_fsSaveGdkDecor = m_gdkDecor;
 759             m_gdkFunc = m_gdkDecor = 0;
 760             gdk_window_set_decorations(window, (GdkWMDecoration)0);
 761             gdk_window_set_functions(window, (GdkWMFunction)0);
 762
 763             gdk_window_get_origin (m_widget->window, &root_x, &root_y);
 764             gdk_window_get_geometry (m_widget->window, &client_x, &client_y,
 765                          &width, &height, NULL);
 766
 767             gdk_window_move_resize (m_widget->window, -client_x, -client_y,
 768                         screen_width + 1, screen_height + 1);
 769
 770             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 771                                     (WXWindow)GDK_ROOT_WINDOW(),
 772                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 773                                     show, &m_fsSaveFrame, method);
 774         }
 775         else // hide
 776         {
 777             m_gdkFunc = m_fsSaveGdkFunc;
 778             m_gdkDecor = m_fsSaveGdkDecor;
 779             gdk_window_set_decorations(window, (GdkWMDecoration)m_gdkDecor);
 780             gdk_window_set_functions(window, (GdkWMFunction)m_gdkFunc);
 781
 782             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 783                                     (WXWindow)GDK_ROOT_WINDOW(),
 784                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 785                                     show, &m_fsSaveFrame, method);
 786
 787             SetSize(m_fsSaveFrame.x, m_fsSaveFrame.y,
 788                     m_fsSaveFrame.width, m_fsSaveFrame.height);
 789         }
 790     }
 791
 792     // documented behaviour is to show the window if it's still hidden when
 793     // showing it full screen
 794     if (show)
 795         Show();
 796
 797     return true;
 798 }
 799
 800 // ----------------------------------------------------------------------------
 801 // overridden wxWindow methods
 802 // ----------------------------------------------------------------------------
 803
 804 bool wxTopLevelWindowGTK::Show( bool show )
 805 {
 806     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 807
 808     if (show && !IsShown())
 809     {
 810         // size_allocate signals occur in reverse order (bottom to top).
 811         // Things work better if the initial wxSizeEvents are sent (from the
 812         // top down), before the initial size_allocate signals occur.
 813         wxSizeEvent event(GetSize(), GetId());
 814         event.SetEventObject(this);
 815         GetEventHandler()->ProcessEvent(event);
 816     }
 817
 818     bool change = wxTopLevelWindowBase::Show(show);
 819
 820     if (change && !show)
 821     {
 822         // make sure window has a non-default position, so when it is shown
 823         // again, it won't be repositioned by WM as if it were a new window
 824         // Note that this must be done _after_ the window is hidden.
 825         gtk_window_move((GtkWindow*)m_widget, m_x, m_y);
 826     }
 827
 828     return change;
 829 }
 830
 831 void wxTopLevelWindowGTK::Raise()
 832 {
 833     gtk_window_present( GTK_WINDOW( m_widget ) );
 834 }
 835
 836 void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 837 {
 838     wxFAIL_MSG( wxT("DoMoveWindow called for wxTopLevelWindowGTK") );
 839 }
 840
 841 // ----------------------------------------------------------------------------
 842 // window geometry
 843 // ----------------------------------------------------------------------------
 844
 845 void wxTopLevelWindowGTK::GTKDoGetSize(int *width, int *height) const
 846 {
 847     wxSize size(m_width, m_height);
 848     if (!IsFullScreen())
 849     {
 850         size -= GetDecorSize(m_gdkDecor);
 851         if (size.x < 0) size.x = 0;
 852         if (size.y < 0) size.y = 0;
 853     }
 854     if (width)  *width  = size.x;
 855     if (height) *height = size.y;
 856 }
 857
 858 void wxTopLevelWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 859 {
 860     wxCHECK_RET( m_widget, wxT("invalid frame") );
 861
 862     // deal with the position first
 863     int old_x = m_x;
 864     int old_y = m_y;
 865
 866     if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 867     {
 868         // -1 means "use existing" unless the flag above is specified
 869         if ( x != -1 )
 870             m_x = x;
 871         if ( y != -1 )
 872             m_y = y;
 873     }
 874     else // wxSIZE_ALLOW_MINUS_ONE
 875     {
 876         m_x = x;
 877         m_y = y;
 878     }
 879
 880     if ( m_x != old_x || m_y != old_y )
 881     {
 882         gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
 883     }
 884
 885     const wxSize oldSize(m_width, m_height);
 886     if (width >= 0)
 887         m_width = width;
 888     if (height >= 0)
 889         m_height = height;
 890     ConstrainSize();
 891     if (m_width != oldSize.x || m_height != oldSize.y)
 892     {
 893         int w, h;
 894         GTKDoGetSize(&w, &h);
 895         gtk_window_resize(GTK_WINDOW(m_widget), w, h);
 896
 897         GetClientSize(&m_oldClientWidth, &m_oldClientHeight);
 898         wxSizeEvent event(GetSize(), GetId());
 899         event.SetEventObject(this);
 900         GetEventHandler()->ProcessEvent(event);
 901     }
 902 }
 903
 904 void wxTopLevelWindowGTK::DoGetClientSize( int *width, int *height ) const
 905 {
 906     wxASSERT_MSG(m_widget, wxT("invalid frame"));
 907
 908     if ( IsIconized() )
 909     {
 910         // for consistency with wxMSW, client area is supposed to be empty for
 911         // the iconized windows
 912         if ( width )
 913             *width = 0;
 914         if ( height )
 915             *height = 0;
 916     }
 917     else
 918     {
 919         GTKDoGetSize(width, height);
 920     }
 921 }
 922
 923 void wxTopLevelWindowGTK::DoSetSizeHints( int minW, int minH,
 924                                           int maxW, int maxH,
 925                                           int incW, int incH )
 926 {
 927     wxTopLevelWindowBase::DoSetSizeHints( minW, minH, maxW, maxH, incW, incH );
 928
 929     const wxSize minSize = GetMinSize();
 930     const wxSize maxSize = GetMaxSize();
 931     GdkGeometry hints;
 932     int hints_mask = 0;
 933     const wxSize sizeDecor = GetDecorSize(m_gdkDecor);
 934     if (minSize.x > 0 || minSize.y > 0)
 935     {
 936         hints_mask |= GDK_HINT_MIN_SIZE;
 937         hints.min_width = minSize.x - sizeDecor.x;
 938         if (hints.min_width < 0)
 939             hints.min_width = 0;
 940         hints.min_height = minSize.y - sizeDecor.y;
 941         if (hints.min_height < 0)
 942             hints.min_height = 0;
 943     }
 944     if (maxSize.x > 0 || maxSize.y > 0)
 945     {
 946         hints_mask |= GDK_HINT_MAX_SIZE;
 947         hints.max_width = maxSize.x - sizeDecor.x;
 948         if (hints.max_width < 0)
 949             hints.max_width = INT_MAX;
 950         hints.max_height = maxSize.y - sizeDecor.y;
 951         if (hints.max_height < 0)
 952             hints.max_height = INT_MAX;
 953     }
 954     if (incW > 0 || incH > 0)
 955     {
 956         hints_mask |= GDK_HINT_RESIZE_INC;
 957         hints.width_inc  = incW > 0 ? incW : 1;
 958         hints.height_inc = incH > 0 ? incH : 1;
 959     }
 960     gtk_window_set_geometry_hints(
 961         (GtkWindow*)m_widget, NULL, &hints, (GdkWindowHints)hints_mask);
 962 }
 963
 964 bool wxTopLevelWindowGTK::IsDecorCacheable() const
 965 {
 966     return true;
 967 }
 968
 969 void wxTopLevelWindowGTK::OnInternalIdle()
 970 {
 971     // set the focus if not done yet and if we can already do it
 972     if ( GTK_WIDGET_REALIZED(m_wxwindow) )
 973     {
 974         if ( g_delayedFocus &&
 975              wxGetTopLevelParent((wxWindow*)g_delayedFocus) == this )
 976         {
 977             wxLogTrace(_T("focus"),
 978                        _T("Setting focus from wxTLW::OnIdle() to %s(%s)"),
 979                        g_delayedFocus->GetClassInfo()->GetClassName(),
 980                        g_delayedFocus->GetLabel().c_str());
 981
 982             g_delayedFocus->SetFocus();
 983             g_delayedFocus = NULL;
 984         }
 985     }
 986
 987     wxWindow::OnInternalIdle();
 988
 989     // Synthetize activate events.
 990     if ( g_sendActivateEvent != -1 )
 991     {
 992         bool activate = g_sendActivateEvent != 0;
 993
 994         // if (!activate) wxPrintf( wxT("de") );
 995         // wxPrintf( wxT("activate\n") );
 996
 997         // do it only once
 998         g_sendActivateEvent = -1;
 999
1000         wxTheApp->SetActive(activate, (wxWindow *)g_lastActiveFrame);
1001     }
1002 }
1003
1004 // ----------------------------------------------------------------------------
1005 // frame title/icon
1006 // ----------------------------------------------------------------------------
1007
1008 void wxTopLevelWindowGTK::SetTitle( const wxString &title )
1009 {
1010     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1011
1012     if ( title == m_title )
1013         return;
1014
1015     m_title = title;
1016
1017     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
1018 }
1019
1020 void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
1021 {
1022     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1023
1024     wxTopLevelWindowBase::SetIcons( icons );
1025
1026     GList *list = NULL;
1027
1028     const size_t numIcons = icons.GetIconCount();
1029     for ( size_t i = 0; i < numIcons; i++ )
1030     {
1031         list = g_list_prepend(list, icons.GetIconByIndex(i).GetPixbuf());
1032     }
1033
1034     gtk_window_set_icon_list(GTK_WINDOW(m_widget), list);
1035     g_list_free(list);
1036 }
1037
1038 // ----------------------------------------------------------------------------
1039 // frame state: maximized/iconized/normal
1040 // ----------------------------------------------------------------------------
1041
1042 void wxTopLevelWindowGTK::Maximize(bool maximize)
1043 {
1044     if (maximize)
1045         gtk_window_maximize( GTK_WINDOW( m_widget ) );
1046     else
1047         gtk_window_unmaximize( GTK_WINDOW( m_widget ) );
1048 }
1049
1050 bool wxTopLevelWindowGTK::IsMaximized() const
1051 {
1052     if(!m_widget->window)
1053         return false;
1054
1055     return gdk_window_get_state(m_widget->window) & GDK_WINDOW_STATE_MAXIMIZED;
1056 }
1057
1058 void wxTopLevelWindowGTK::Restore()
1059 {
1060     // "Present" seems similar enough to "restore"
1061     gtk_window_present( GTK_WINDOW( m_widget ) );
1062 }
1063
1064 void wxTopLevelWindowGTK::Iconize( bool iconize )
1065 {
1066     if (iconize)
1067         gtk_window_iconify( GTK_WINDOW( m_widget ) );
1068     else
1069         gtk_window_deiconify( GTK_WINDOW( m_widget ) );
1070 }
1071
1072 bool wxTopLevelWindowGTK::IsIconized() const
1073 {
1074     return m_isIconized;
1075 }
1076
1077 void wxTopLevelWindowGTK::SetIconizeState(bool iconize)
1078 {
1079     if ( iconize != m_isIconized )
1080     {
1081         m_isIconized = iconize;
1082         (void)SendIconizeEvent(iconize);
1083     }
1084 }
1085
1086 void wxTopLevelWindowGTK::AddGrab()
1087 {
1088     if (!m_grabbed)
1089     {
1090         m_grabbed = true;
1091         gtk_grab_add( m_widget );
1092         wxGUIEventLoop().Run();
1093         gtk_grab_remove( m_widget );
1094     }
1095 }
1096
1097 void wxTopLevelWindowGTK::RemoveGrab()
1098 {
1099     if (m_grabbed)
1100     {
1101         gtk_main_quit();
1102         m_grabbed = false;
1103     }
1104 }
1105
1106
1107 // helper
1108 static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
1109 {
1110     if (window)
1111     {
1112         if (region.IsEmpty())
1113         {
1114             gdk_window_shape_combine_mask(window, NULL, 0, 0);
1115         }
1116         else
1117         {
1118             gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
1119             return true;
1120         }
1121     }
1122     return false;
1123 }
1124
1125
1126 bool wxTopLevelWindowGTK::SetShape(const wxRegion& region)
1127 {
1128     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
1129                  _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
1130
1131     GdkWindow *window = NULL;
1132     if (m_wxwindow)
1133     {
1134         do_shape_combine_region(m_wxwindow->window, region);
1135     }
1136     window = m_widget->window;
1137     return do_shape_combine_region(window, region);
1138 }
1139
1140 bool wxTopLevelWindowGTK::IsActive()
1141 {
1142     return (this == (wxTopLevelWindowGTK*)g_activeFrame);
1143 }
1144
1145 void wxTopLevelWindowGTK::RequestUserAttention(int flags)
1146 {
1147     bool new_hint_value = false;
1148
1149     // FIXME: This is a workaround to focus handling problem
1150     // If RequestUserAttention is called for example right after a wxSleep, OnInternalIdle hasn't
1151     // yet been processed, and the internal focus system is not up to date yet.
1152     // wxYieldIfNeeded ensures the processing of it, but can have unwanted side effects - MR
1153     ::wxYieldIfNeeded();
1154
1155     if(m_urgency_hint >= 0)
1156         g_source_remove(m_urgency_hint);
1157
1158     m_urgency_hint = -2;
1159
1160     if( GTK_WIDGET_REALIZED(m_widget) && !IsActive() )
1161     {
1162         new_hint_value = true;
1163
1164         if (flags & wxUSER_ATTENTION_INFO)
1165         {
1166             m_urgency_hint = g_timeout_add(5000, (GSourceFunc)gtk_frame_urgency_timer_callback, this);
1167         } else {
1168             m_urgency_hint = -1;
1169         }
1170     }
1171
1172 #if GTK_CHECK_VERSION(2,7,0)
1173     if(!gtk_check_version(2,7,0))
1174         gtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1175     else
1176 #endif
1177         wxgtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1178 }
1179
1180 void wxTopLevelWindowGTK::SetWindowStyleFlag( long style )
1181 {
1182     // Store which styles were changed
1183     long styleChanges = style ^ m_windowStyle;
1184
1185     // Process wxWindow styles. This also updates the internal variable
1186     // Therefore m_windowStyle bits carry now the _new_ style values
1187     wxWindow::SetWindowStyleFlag(style);
1188
1189     // just return for now if widget does not exist yet
1190     if (!m_widget)
1191         return;
1192
1193     if ( styleChanges & wxSTAY_ON_TOP )
1194     {
1195         gtk_window_set_keep_above(GTK_WINDOW(m_widget),
1196                                   m_windowStyle & wxSTAY_ON_TOP);
1197     }
1198
1199     if ( styleChanges & wxFRAME_NO_TASKBAR )
1200     {
1201         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget),
1202                                          m_windowStyle & wxFRAME_NO_TASKBAR);
1203     }
1204 }
1205
1206 /* Get the X Window between child and the root window.
1207    This should usually be the WM managed XID */
1208 static Window wxGetTopmostWindowX11(Display *dpy, Window child)
1209 {
1210     Window root, parent;
1211     Window* children;
1212     unsigned int nchildren;
1213
1214     XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1215     XFree(children);
1216
1217     while (parent != root) {
1218         child = parent;
1219         XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1220         XFree(children);
1221     }
1222
1223     return child;
1224 }
1225
1226 bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
1227 {
1228     if (!m_widget || !m_widget->window)
1229         return false;
1230
1231     Display* dpy = GDK_WINDOW_XDISPLAY (m_widget->window);
1232     // We need to get the X Window that has the root window as the immediate parent
1233     // and m_widget->window as a child. This should be the X Window that the WM manages and
1234     // from which the opacity property is checked from.
1235     Window win = wxGetTopmostWindowX11(dpy, GDK_WINDOW_XID (m_widget->window));
1236
1237
1238     // Using pure Xlib to not have a GTK version check mess due to gtk2.0 not having GdkDisplay
1239     if (alpha == 0xff)
1240         XDeleteProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False));
1241     else
1242     {
1243         long opacity = alpha * 0x1010101L;
1244         XChangeProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False),
1245                         XA_CARDINAL, 32, PropModeReplace,
1246                         (unsigned char *) &opacity, 1L);
1247     }
1248     XSync(dpy, False);
1249     return true;
1250 }
1251
1252 bool wxTopLevelWindowGTK::CanSetTransparent()
1253 {
1254     // allow to override automatic detection as it's far from perfect
1255     static const wxChar *SYSOPT_TRANSPARENT = wxT("gtk.tlw.can-set-transparent");
1256     if ( wxSystemOptions::HasOption(SYSOPT_TRANSPARENT) )
1257     {
1258         return wxSystemOptions::GetOptionInt(SYSOPT_TRANSPARENT) != 0;
1259     }
1260
1261 #if GTK_CHECK_VERSION(2,10,0)
1262     if (!gtk_check_version(2,10,0))
1263     {
1264         return (gtk_widget_is_composited (m_widget));
1265     }
1266     else
1267 #endif // In case of lower versions than gtk+-2.10.0 we could look for _NET_WM_CM_Sn ourselves
1268     {
1269         return false;
1270     }
1271
1272 #if 0 // Don't be optimistic here for the sake of wxAUI
1273     int opcode, event, error;
1274     // Check for the existence of a RGBA visual instead?
1275     return XQueryExtension(gdk_x11_get_default_xdisplay (),
1276                            "Composite", &opcode, &event, &error);
1277 #endif
1278 }
1279
1280 void wxTopLevelWindowGTK::OnSysColourChanged(wxSysColourChangedEvent& event)
1281 {
1282     // We don't know the order in which top-level windows will
1283     // be notified, so we need to clear the system objects
1284     // for each top-level window.
1285     extern void wxClearGtkSystemObjects();
1286     wxClearGtkSystemObjects();
1287
1288     // wxWindowBase::OnSysColourChanged will propagate event
1289     // to children
1290     event.Skip();
1291 }