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 // this is incremented while a modal dialog is shown
  58 int wxOpenModalDialogsCount = 0;
  59
  60 extern wxWindowGTK     *g_delayedFocus;
  61
  62 // the frame that is currently active (i.e. its child has focus). It is
  63 // used to generate wxActivateEvents
  64 static wxTopLevelWindowGTK *g_activeFrame = (wxTopLevelWindowGTK*) NULL;
  65 static wxTopLevelWindowGTK *g_lastActiveFrame = (wxTopLevelWindowGTK*) NULL;
  66
  67 // if we detect that the app has got/lost the focus, we set this variable to
  68 // either TRUE or FALSE and an activate event will be sent during the next
  69 // OnIdle() call and it is reset to -1: this value means that we shouldn't
  70 // send any activate events at all
  71 static int g_sendActivateEvent = -1;
  72
  73 //-----------------------------------------------------------------------------
  74 // RequestUserAttention related functions
  75 //-----------------------------------------------------------------------------
  76
  77 extern "C" {
  78 static void wxgtk_window_set_urgency_hint (GtkWindow *win,
  79                                            gboolean setting)
  80 {
  81     wxASSERT_MSG( GTK_WIDGET_REALIZED(win), wxT("wxgtk_window_set_urgency_hint: GdkWindow not realized") );
  82     GdkWindow *window = GTK_WIDGET(win)->window;
  83     XWMHints *wm_hints;
  84
  85     wm_hints = XGetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window));
  86
  87     if (!wm_hints)
  88         wm_hints = XAllocWMHints();
  89
  90     if (setting)
  91         wm_hints->flags |= XUrgencyHint;
  92     else
  93         wm_hints->flags &= ~XUrgencyHint;
  94
  95     XSetWMHints(GDK_WINDOW_XDISPLAY(window), GDK_WINDOW_XWINDOW(window), wm_hints);
  96     XFree(wm_hints);
  97 }
  98
  99 static gboolean gtk_frame_urgency_timer_callback( wxTopLevelWindowGTK *win )
 100 {
 101 #if GTK_CHECK_VERSION(2,7,0)
 102     if(!gtk_check_version(2,7,0))
 103         gtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
 104     else
 105 #endif
 106         wxgtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
 107
 108     win->m_urgency_hint = -2;
 109     return FALSE;
 110 }
 111 }
 112
 113 //-----------------------------------------------------------------------------
 114 // "focus_in_event"
 115 //-----------------------------------------------------------------------------
 116
 117 extern "C" {
 118 static gboolean gtk_frame_focus_in_callback( GtkWidget *widget,
 119                                          GdkEvent *WXUNUSED(event),
 120                                          wxTopLevelWindowGTK *win )
 121 {
 122     switch ( g_sendActivateEvent )
 123     {
 124         case -1:
 125             // we've got focus from outside, synthetize wxActivateEvent
 126             g_sendActivateEvent = 1;
 127             break;
 128
 129         case 0:
 130             // another our window just lost focus, it was already ours before
 131             // - don't send any wxActivateEvent
 132             g_sendActivateEvent = -1;
 133             break;
 134     }
 135
 136     g_activeFrame = win;
 137     g_lastActiveFrame = g_activeFrame;
 138
 139     // wxPrintf( wxT("active: %s\n"), win->GetTitle().c_str() );
 140
 141     // MR: wxRequestUserAttention related block
 142     switch( win->m_urgency_hint )
 143     {
 144         default:
 145             g_source_remove( win->m_urgency_hint );
 146             // no break, fallthrough to remove hint too
 147         case -1:
 148 #if GTK_CHECK_VERSION(2,7,0)
 149             if(!gtk_check_version(2,7,0))
 150                 gtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
 151             else
 152 #endif
 153             {
 154                 wxgtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
 155             }
 156
 157             win->m_urgency_hint = -2;
 158             break;
 159
 160         case -2: break;
 161     }
 162
 163     wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 164     wxActivateEvent event(wxEVT_ACTIVATE, true, g_activeFrame->GetId());
 165     event.SetEventObject(g_activeFrame);
 166     g_activeFrame->GetEventHandler()->ProcessEvent(event);
 167
 168     return FALSE;
 169 }
 170 }
 171
 172 //-----------------------------------------------------------------------------
 173 // "focus_out_event"
 174 //-----------------------------------------------------------------------------
 175
 176 extern "C" {
 177 static
 178 gboolean gtk_frame_focus_out_callback(GtkWidget * WXUNUSED(widget),
 179                                       GdkEventFocus *WXUNUSED(gdk_event),
 180                                       wxTopLevelWindowGTK * WXUNUSED(win))
 181 {
 182     // if the focus goes out of our app alltogether, OnIdle() will send
 183     // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
 184     // g_sendActivateEvent to -1
 185     g_sendActivateEvent = 0;
 186
 187     // wxASSERT_MSG( (g_activeFrame == win), wxT("TLW deactivatd although it wasn't active") );
 188
 189     // wxPrintf( wxT("inactive: %s\n"), win->GetTitle().c_str() );
 190
 191     if (g_activeFrame)
 192     {
 193         wxLogTrace(wxT("activate"), wxT("Activating frame %p (from focus_in)"), g_activeFrame);
 194         wxActivateEvent event(wxEVT_ACTIVATE, false, g_activeFrame->GetId());
 195         event.SetEventObject(g_activeFrame);
 196         g_activeFrame->GetEventHandler()->ProcessEvent(event);
 197
 198         g_activeFrame = NULL;
 199     }
 200
 201     return FALSE;
 202 }
 203 }
 204
 205 //-----------------------------------------------------------------------------
 206
 207 // Get cached size of WM decorations for given GdkWMDecoration.
 208 static wxSize& GetDecorSize(int decor)
 209 {
 210     // In testing, only the title bar and GDK_DECOR_BORDER made a difference.
 211     // 4 possible combinations of title bar and border
 212     static wxSize size[4];
 213
 214     int index = 0;
 215     // title bar
 216     if (decor & (GDK_DECOR_MENU | GDK_DECOR_MINIMIZE | GDK_DECOR_MAXIMIZE | GDK_DECOR_TITLE))
 217         index = 1;
 218     // border
 219     if (decor & GDK_DECOR_BORDER)
 220         index |= 2;
 221     return size[index];
 222 }
 223
 224 //-----------------------------------------------------------------------------
 225 // "size_allocate" from m_wxwindow
 226 //-----------------------------------------------------------------------------
 227
 228 extern "C" {
 229 static void
 230 size_allocate(GtkWidget*, GtkAllocation* alloc, wxTopLevelWindowGTK* win)
 231 {
 232     if (win->m_oldClientWidth  != alloc->width ||
 233         win->m_oldClientHeight != alloc->height)
 234     {
 235         win->m_oldClientWidth  = alloc->width;
 236         win->m_oldClientHeight = alloc->height;
 237         wxSize sizeDecor;
 238         if (!win->IsFullScreen())
 239             sizeDecor = GetDecorSize(win->m_gdkDecor);
 240         win->m_width  = win->m_widget->allocation.width  + sizeDecor.x;
 241         win->m_height = win->m_widget->allocation.height + sizeDecor.y;
 242         if (!win->IsIconized())
 243         {
 244             wxSizeEvent event(win->GetSize(), win->GetId());
 245             event.SetEventObject(win);
 246             win->GetEventHandler()->ProcessEvent(event);
 247         }
 248         // else the window is currently unmapped, don't generate size events
 249     }
 250 }
 251 }
 252
 253 // ----------------------------------------------------------------------------
 254 // "size_request"
 255 // ----------------------------------------------------------------------------
 256
 257 extern "C" {
 258 static
 259 void wxgtk_tlw_size_request_callback(GtkWidget * WXUNUSED(widget),
 260                                      GtkRequisition *requisition,
 261                                      wxTopLevelWindowGTK *win)
 262 {
 263     // we must return the size of the window without WM decorations, otherwise
 264     // GTK+ gets confused, so don't call just GetSize() here
 265     win->GTKDoGetSize(&requisition->width, &requisition->height);
 266 }
 267 }
 268
 269 //-----------------------------------------------------------------------------
 270 // "delete_event"
 271 //-----------------------------------------------------------------------------
 272
 273 extern "C" {
 274 static gboolean
 275 gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget),
 276                            GdkEvent *WXUNUSED(event),
 277                            wxTopLevelWindowGTK *win )
 278 {
 279     if (win->IsEnabled() &&
 280         (wxOpenModalDialogsCount == 0 || (win->GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ||
 281          win->IsGrabbed()))
 282         win->Close();
 283
 284     return TRUE;
 285 }
 286 }
 287
 288
 289 //-----------------------------------------------------------------------------
 290 // "configure_event"
 291 //-----------------------------------------------------------------------------
 292
 293 extern "C" {
 294 static gboolean
 295 gtk_frame_configure_callback( GtkWidget* widget,
 296                               GdkEventConfigure *WXUNUSED(event),
 297                               wxTopLevelWindowGTK *win )
 298 {
 299     if (!win->m_hasVMT || !win->IsShown())
 300         return FALSE;
 301
 302     wxPoint point;
 303     gtk_window_get_position((GtkWindow*)widget, &point.x, &point.y);
 304
 305     win->m_x = point.x;
 306     win->m_y = point.y;
 307     wxMoveEvent mevent(point, win->GetId());
 308     mevent.SetEventObject( win );
 309     win->GetEventHandler()->ProcessEvent( mevent );
 310
 311     return FALSE;
 312 }
 313 }
 314
 315 //-----------------------------------------------------------------------------
 316 // "realize" from m_widget
 317 //-----------------------------------------------------------------------------
 318
 319 // we cannot MWM hints and icons before the widget has been realized,
 320 // so we do this directly after realization
 321
 322 extern "C" {
 323 static void
 324 gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
 325                              wxTopLevelWindowGTK *win )
 326 {
 327     // All this is for Motif Window Manager "hints" and is supposed to be
 328     // recognized by other WM as well. Not tested.
 329     gdk_window_set_decorations(win->m_widget->window,
 330                                (GdkWMDecoration)win->m_gdkDecor);
 331     gdk_window_set_functions(win->m_widget->window,
 332                                (GdkWMFunction)win->m_gdkFunc);
 333
 334     // GTK's shrinking/growing policy
 335     if ((win->m_gdkFunc & GDK_FUNC_RESIZE) == 0)
 336         gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
 337     else
 338         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 339
 340     // reset the icon
 341     wxIconBundle iconsOld = win->GetIcons();
 342     if ( !iconsOld.IsEmpty() )
 343     {
 344         win->SetIcon( wxNullIcon );
 345         win->SetIcons( iconsOld );
 346     }
 347 }
 348 }
 349
 350 //-----------------------------------------------------------------------------
 351 // "map_event" from m_widget
 352 //-----------------------------------------------------------------------------
 353
 354 extern "C" {
 355 static gboolean
 356 gtk_frame_map_callback( GtkWidget* widget,
 357                         GdkEvent * WXUNUSED(event),
 358                         wxTopLevelWindow *win )
 359 {
 360     // Calculate size of WM decorations.
 361     // Done here in case WM does not support the _NET_FRAME_EXTENTS property.
 362     if (win->IsDecorCacheable() && !win->IsFullScreen())
 363     {
 364         GdkRectangle rect;
 365         gdk_window_get_frame_extents(widget->window, &rect);
 366         int w, h;
 367         gdk_drawable_get_size(widget->window, &w, &h);
 368         wxSize& decorSize = GetDecorSize(win->m_gdkDecor);
 369         const wxSize size = wxSize(rect.width - w, rect.height - h);
 370         if (decorSize.x != size.x || decorSize.y != size.y)
 371         {
 372             // Update window size and frame extents cache
 373             win->m_width = rect.width;
 374             win->m_height = rect.height;
 375             decorSize = size;
 376         }
 377     }
 378
 379     const bool wasIconized = win->IsIconized();
 380
 381     win->SetIconizeState(false);
 382
 383     if (wasIconized)
 384     {
 385         // Because GetClientSize() returns (0,0) when IsIconized() is true,
 386         // a size event must be generated, just in case GetClientSize() was
 387         // called while iconized. This specifically happens when restoring a
 388         // tlw that was "rolled up" with some WMs.
 389         // Queue a resize rather than sending size event directly to allow
 390         // children to be made visible first.
 391         win->m_oldClientWidth = 0;
 392         gtk_widget_queue_resize(win->m_wxwindow);
 393     }
 394
 395     return false;
 396 }
 397 }
 398
 399 //-----------------------------------------------------------------------------
 400 // "unmap_event" from m_widget
 401 //-----------------------------------------------------------------------------
 402
 403 extern "C" {
 404 static gboolean
 405 gtk_frame_unmap_callback( GtkWidget * WXUNUSED(widget),
 406                           GdkEvent * WXUNUSED(event),
 407                           wxTopLevelWindow *win )
 408 {
 409     win->SetIconizeState(true);
 410     return false;
 411 }
 412 }
 413
 414 //-----------------------------------------------------------------------------
 415 // "property_notify_event" from m_widget
 416 //-----------------------------------------------------------------------------
 417
 418 extern "C" {
 419 static gboolean property_notify_event(
 420     GtkWidget*, GdkEventProperty* event, wxTopLevelWindowGTK* win)
 421 {
 422     // Watch for changes to _NET_FRAME_EXTENTS property
 423     static GdkAtom property = gdk_atom_intern("_NET_FRAME_EXTENTS", false);
 424     if (event->state == GDK_PROPERTY_NEW_VALUE && event->atom == property &&
 425         win->IsDecorCacheable() && !win->IsFullScreen())
 426     {
 427         Atom xproperty = gdk_x11_atom_to_xatom_for_display(
 428                             gdk_drawable_get_display(event->window), property);
 429         Atom type;
 430         int format;
 431         gulong nitems, bytes_after;
 432         long* data = NULL;
 433         Status status = XGetWindowProperty(
 434             gdk_x11_drawable_get_xdisplay(event->window),
 435             gdk_x11_drawable_get_xid(event->window),
 436             xproperty,
 437             0, 4, false, XA_CARDINAL,
 438             &type, &format, &nitems, &bytes_after, (guchar**)&data);
 439         if (status == Success && data && nitems == 4)
 440         {
 441             wxSize& decorSize = GetDecorSize(win->m_gdkDecor);
 442             const wxSize size =
 443                 wxSize(int(data[0] + data[1]), int(data[2] + data[3]));
 444             if (decorSize.x != size.x || decorSize.y != size.y)
 445             {
 446                 // Update window size and frame extents cache
 447                 win->m_width  += size.x - decorSize.x;
 448                 win->m_height += size.y - decorSize.y;
 449                 if (win->m_width  < 0) win->m_width  = 0;
 450                 if (win->m_height < 0) win->m_height = 0;
 451                 decorSize = size;
 452                 win->m_oldClientWidth = 0;
 453                 gtk_widget_queue_resize(win->m_wxwindow);
 454             }
 455         }
 456         if (data)
 457             XFree(data);
 458     }
 459     return false;
 460 }
 461 }
 462
 463 BEGIN_EVENT_TABLE(wxTopLevelWindowGTK, wxTopLevelWindowBase)
 464     EVT_SYS_COLOUR_CHANGED(wxTopLevelWindowGTK::OnSysColourChanged)
 465 END_EVENT_TABLE()
 466
 467
 468 // ----------------------------------------------------------------------------
 469 // wxTopLevelWindowGTK creation
 470 // ----------------------------------------------------------------------------
 471
 472 void wxTopLevelWindowGTK::Init()
 473 {
 474     m_mainWidget = (GtkWidget*) NULL;
 475     m_isIconized = false;
 476     m_fsIsShowing = false;
 477     m_themeEnabled = true;
 478     m_gdkDecor = m_gdkFunc = 0;
 479     m_grabbed = false;
 480
 481     m_urgency_hint = -2;
 482 }
 483
 484 bool wxTopLevelWindowGTK::Create( wxWindow *parent,
 485                                   wxWindowID id,
 486                                   const wxString& title,
 487                                   const wxPoint& pos,
 488                                   const wxSize& sizeOrig,
 489                                   long style,
 490                                   const wxString &name )
 491 {
 492     // always create a frame of some reasonable, even if arbitrary, size (at
 493     // least for MSW compatibility)
 494     wxSize size = sizeOrig;
 495     size.x = WidthDefault(size.x);
 496     size.y = HeightDefault(size.y);
 497
 498     wxTopLevelWindows.Append( this );
 499
 500     if (!PreCreation( parent, pos, size ) ||
 501         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 502     {
 503         wxFAIL_MSG( wxT("wxTopLevelWindowGTK creation failed") );
 504         return false;
 505     }
 506
 507     m_title = title;
 508
 509     // NB: m_widget may be !=NULL if it was created by derived class' Create,
 510     //     e.g. in wxTaskBarIconAreaGTK
 511     if (m_widget == NULL)
 512     {
 513 #if wxUSE_LIBHILDON
 514         // we must create HildonWindow and not a normal GtkWindow as the latter
 515         // doesn't look correctly in Maemo environment and it must also be
 516         // registered with the main program object
 517         m_widget = hildon_window_new();
 518         hildon_program_add_window(wxTheApp->GetHildonProgram(),
 519                                   HILDON_WINDOW(m_widget));
 520 #else // !wxUSE_LIBHILDON
 521         m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 522         if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
 523         {
 524             // Tell WM that this is a dialog window and make it center
 525             // on parent by default (this is what GtkDialog ctor does):
 526             gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 527                                      GDK_WINDOW_TYPE_HINT_DIALOG);
 528             gtk_window_set_position(GTK_WINDOW(m_widget),
 529                                     GTK_WIN_POS_CENTER_ON_PARENT);
 530         }
 531         else
 532         {
 533             if (style & wxFRAME_TOOL_WINDOW)
 534             {
 535                 gtk_window_set_type_hint(GTK_WINDOW(m_widget),
 536                                          GDK_WINDOW_TYPE_HINT_UTILITY);
 537
 538                 // On some WMs, like KDE, a TOOL_WINDOW will still show
 539                 // on the taskbar, but on Gnome a TOOL_WINDOW will not.
 540                 // For consistency between WMs and with Windows, we
 541                 // should set the NO_TASKBAR flag which will apply
 542                 // the set_skip_taskbar_hint if it is available,
 543                 // ensuring no taskbar entry will appear.
 544                 style |= wxFRAME_NO_TASKBAR;
 545             }
 546         }
 547 #endif // wxUSE_LIBHILDON/!wxUSE_LIBHILDON
 548     }
 549
 550     wxWindow *topParent = wxGetTopLevelParent(m_parent);
 551     if (topParent && (((GTK_IS_WINDOW(topParent->m_widget)) &&
 552                        (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)) ||
 553                        (style & wxFRAME_FLOAT_ON_PARENT)))
 554     {
 555         gtk_window_set_transient_for( GTK_WINDOW(m_widget),
 556                                       GTK_WINDOW(topParent->m_widget) );
 557     }
 558
 559     if (style & wxFRAME_NO_TASKBAR)
 560     {
 561         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), TRUE);
 562     }
 563
 564     if (style & wxSTAY_ON_TOP)
 565     {
 566         gtk_window_set_keep_above(GTK_WINDOW(m_widget), TRUE);
 567     }
 568
 569 #if 0
 570     if (!name.empty())
 571         gtk_window_set_role( GTK_WINDOW(m_widget), wxGTK_CONV( name ) );
 572 #endif
 573
 574     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
 575     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 576
 577     g_signal_connect (m_widget, "delete_event",
 578                       G_CALLBACK (gtk_frame_delete_callback), this);
 579
 580     // m_mainWidget is a GtkVBox, holding the bars and client area (m_wxwindow)
 581     m_mainWidget = gtk_vbox_new(false, 0);
 582     gtk_widget_show( m_mainWidget );
 583     GTK_WIDGET_UNSET_FLAGS( m_mainWidget, GTK_CAN_FOCUS );
 584     gtk_container_add( GTK_CONTAINER(m_widget), m_mainWidget );
 585
 586     // m_wxwindow is the client area
 587     m_wxwindow = wxPizza::New();
 588     gtk_widget_show( m_wxwindow );
 589     gtk_container_add( GTK_CONTAINER(m_mainWidget), m_wxwindow );
 590
 591     // we donm't allow the frame to get the focus as otherwise
 592     // the frame will grab it at arbitrary focus changes
 593     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 594
 595     if (m_parent) m_parent->AddChild( this );
 596
 597     g_signal_connect(m_wxwindow, "size_allocate",
 598         G_CALLBACK(size_allocate), this);
 599
 600     g_signal_connect (m_widget, "size_request",
 601                       G_CALLBACK (wxgtk_tlw_size_request_callback), this);
 602     PostCreation();
 603
 604     if ((m_x != -1) || (m_y != -1))
 605         gtk_widget_set_uposition( m_widget, m_x, m_y );
 606
 607     //  we cannot set MWM hints and icons before the widget has
 608     //  been realized, so we do this directly after realization
 609     g_signal_connect (m_widget, "realize",
 610                       G_CALLBACK (gtk_frame_realized_callback), this);
 611
 612     // map and unmap for iconized state
 613     g_signal_connect (m_widget, "map_event",
 614                       G_CALLBACK (gtk_frame_map_callback), this);
 615     g_signal_connect (m_widget, "unmap_event",
 616                       G_CALLBACK (gtk_frame_unmap_callback), this);
 617
 618     // for wxMoveEvent
 619     g_signal_connect (m_widget, "configure_event",
 620                       G_CALLBACK (gtk_frame_configure_callback), this);
 621
 622     // activation
 623     g_signal_connect_after (m_widget, "focus_in_event",
 624                       G_CALLBACK (gtk_frame_focus_in_callback), this);
 625     g_signal_connect_after (m_widget, "focus_out_event",
 626                       G_CALLBACK (gtk_frame_focus_out_callback), this);
 627
 628     gtk_widget_add_events(m_widget, GDK_PROPERTY_CHANGE_MASK);
 629     g_signal_connect(m_widget, "property_notify_event",
 630         G_CALLBACK(property_notify_event), this);
 631
 632     // decorations
 633     if ((style & wxSIMPLE_BORDER) || (style & wxNO_BORDER))
 634     {
 635         m_gdkDecor = 0;
 636         m_gdkFunc = 0;
 637     }
 638     else
 639     {
 640         m_gdkDecor = GDK_DECOR_BORDER;
 641         m_gdkFunc = GDK_FUNC_MOVE;
 642
 643         // All this is for Motif Window Manager "hints" and is supposed to be
 644         // recognized by other WMs as well.
 645         if ((style & wxCAPTION) != 0)
 646         {
 647             m_gdkDecor |= GDK_DECOR_TITLE;
 648         }
 649         if ((style & wxCLOSE_BOX) != 0)
 650         {
 651             m_gdkFunc |= GDK_FUNC_CLOSE;
 652         }
 653         if ((style & wxSYSTEM_MENU) != 0)
 654         {
 655             m_gdkDecor |= GDK_DECOR_MENU;
 656         }
 657         if ((style & wxMINIMIZE_BOX) != 0)
 658         {
 659             m_gdkFunc |= GDK_FUNC_MINIMIZE;
 660             m_gdkDecor |= GDK_DECOR_MINIMIZE;
 661         }
 662         if ((style & wxMAXIMIZE_BOX) != 0)
 663         {
 664             m_gdkFunc |= GDK_FUNC_MAXIMIZE;
 665             m_gdkDecor |= GDK_DECOR_MAXIMIZE;
 666         }
 667         if ((style & wxRESIZE_BORDER) != 0)
 668         {
 669            m_gdkFunc |= GDK_FUNC_RESIZE;
 670            m_gdkDecor |= GDK_DECOR_RESIZEH;
 671         }
 672     }
 673
 674     // m_gdkDecor needs to be set before calling GTKDoGetSize
 675     int w, h;
 676     GTKDoGetSize(&w, &h);
 677     gtk_window_set_default_size(GTK_WINDOW(m_widget), w, h);
 678
 679     return true;
 680 }
 681
 682 wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
 683 {
 684 #if wxUSE_LIBHILDON
 685     hildon_program_remove_window(wxTheApp->GetHildonProgram(),
 686                                  HILDON_WINDOW(m_widget));
 687 #endif // wxUSE_LIBHILDON
 688
 689     if (m_grabbed)
 690     {
 691         wxFAIL_MSG(_T("Window still grabbed"));
 692         RemoveGrab();
 693     }
 694
 695     m_isBeingDeleted = true;
 696
 697     // it may also be GtkScrolledWindow in the case of an MDI child
 698     if (GTK_IS_WINDOW(m_widget))
 699     {
 700         gtk_window_set_focus( GTK_WINDOW(m_widget), NULL );
 701     }
 702
 703     if (g_activeFrame == this)
 704         g_activeFrame = NULL;
 705     if (g_lastActiveFrame == this)
 706         g_lastActiveFrame = NULL;
 707 }
 708
 709 bool wxTopLevelWindowGTK::EnableCloseButton( bool enable )
 710 {
 711     if (enable)
 712         m_gdkFunc |= GDK_FUNC_CLOSE;
 713     else
 714         m_gdkFunc &= ~GDK_FUNC_CLOSE;
 715
 716     if (GTK_WIDGET_REALIZED(m_widget) && (m_widget->window))
 717         gdk_window_set_functions( m_widget->window, (GdkWMFunction)m_gdkFunc );
 718
 719     return true;
 720 }
 721
 722 bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long)
 723 {
 724     if (show == m_fsIsShowing)
 725         return false; // return what?
 726
 727     m_fsIsShowing = show;
 728
 729     wxX11FullScreenMethod method =
 730         wxGetFullScreenMethodX11((WXDisplay*)GDK_DISPLAY(),
 731                                  (WXWindow)GDK_ROOT_WINDOW());
 732
 733     // NB: gtk_window_fullscreen() uses freedesktop.org's WMspec extensions
 734     //     to switch to fullscreen, which is not always available. We must
 735     //     check if WM supports the spec and use legacy methods if it
 736     //     doesn't.
 737     if ( method == wxX11_FS_WMSPEC )
 738     {
 739         if (show)
 740             gtk_window_fullscreen( GTK_WINDOW( m_widget ) );
 741         else
 742             gtk_window_unfullscreen( GTK_WINDOW( m_widget ) );
 743     }
 744     else
 745     {
 746         GdkWindow *window = m_widget->window;
 747
 748         if (show)
 749         {
 750             GetPosition( &m_fsSaveFrame.x, &m_fsSaveFrame.y );
 751             GetSize( &m_fsSaveFrame.width, &m_fsSaveFrame.height );
 752
 753             int screen_width,screen_height;
 754             wxDisplaySize( &screen_width, &screen_height );
 755
 756             gint client_x, client_y, root_x, root_y;
 757             gint width, height;
 758
 759             m_fsSaveGdkFunc = m_gdkFunc;
 760             m_fsSaveGdkDecor = m_gdkDecor;
 761             m_gdkFunc = m_gdkDecor = 0;
 762             gdk_window_set_decorations(window, (GdkWMDecoration)0);
 763             gdk_window_set_functions(window, (GdkWMFunction)0);
 764
 765             gdk_window_get_origin (m_widget->window, &root_x, &root_y);
 766             gdk_window_get_geometry (m_widget->window, &client_x, &client_y,
 767                          &width, &height, NULL);
 768
 769             gdk_window_move_resize (m_widget->window, -client_x, -client_y,
 770                         screen_width + 1, screen_height + 1);
 771
 772             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 773                                     (WXWindow)GDK_ROOT_WINDOW(),
 774                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 775                                     show, &m_fsSaveFrame, method);
 776         }
 777         else // hide
 778         {
 779             m_gdkFunc = m_fsSaveGdkFunc;
 780             m_gdkDecor = m_fsSaveGdkDecor;
 781             gdk_window_set_decorations(window, (GdkWMDecoration)m_gdkDecor);
 782             gdk_window_set_functions(window, (GdkWMFunction)m_gdkFunc);
 783
 784             wxSetFullScreenStateX11((WXDisplay*)GDK_DISPLAY(),
 785                                     (WXWindow)GDK_ROOT_WINDOW(),
 786                                     (WXWindow)GDK_WINDOW_XWINDOW(window),
 787                                     show, &m_fsSaveFrame, method);
 788
 789             SetSize(m_fsSaveFrame.x, m_fsSaveFrame.y,
 790                     m_fsSaveFrame.width, m_fsSaveFrame.height);
 791         }
 792     }
 793
 794     // documented behaviour is to show the window if it's still hidden when
 795     // showing it full screen
 796     if (show)
 797         Show();
 798
 799     return true;
 800 }
 801
 802 // ----------------------------------------------------------------------------
 803 // overridden wxWindow methods
 804 // ----------------------------------------------------------------------------
 805
 806 bool wxTopLevelWindowGTK::Show( bool show )
 807 {
 808     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 809
 810     if (show && !IsShown())
 811     {
 812         // size_allocate signals occur in reverse order (bottom to top).
 813         // Things work better if the initial wxSizeEvents are sent (from the
 814         // top down), before the initial size_allocate signals occur.
 815         wxSizeEvent event(GetSize(), GetId());
 816         event.SetEventObject(this);
 817         GetEventHandler()->ProcessEvent(event);
 818     }
 819
 820     bool change = wxTopLevelWindowBase::Show(show);
 821
 822     if (change && !show)
 823     {
 824         // make sure window has a non-default position, so when it is shown
 825         // again, it won't be repositioned by WM as if it were a new window
 826         // Note that this must be done _after_ the window is hidden.
 827         gtk_window_move((GtkWindow*)m_widget, m_x, m_y);
 828     }
 829
 830     return change;
 831 }
 832
 833 void wxTopLevelWindowGTK::Raise()
 834 {
 835     gtk_window_present( GTK_WINDOW( m_widget ) );
 836 }
 837
 838 void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 839 {
 840     wxFAIL_MSG( wxT("DoMoveWindow called for wxTopLevelWindowGTK") );
 841 }
 842
 843 // ----------------------------------------------------------------------------
 844 // window geometry
 845 // ----------------------------------------------------------------------------
 846
 847 void wxTopLevelWindowGTK::GTKDoGetSize(int *width, int *height) const
 848 {
 849     wxSize size(m_width, m_height);
 850     if (!IsFullScreen())
 851     {
 852         size -= GetDecorSize(m_gdkDecor);
 853         if (size.x < 0) size.x = 0;
 854         if (size.y < 0) size.y = 0;
 855     }
 856     if (width)  *width  = size.x;
 857     if (height) *height = size.y;
 858 }
 859
 860 void wxTopLevelWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 861 {
 862     wxCHECK_RET( m_widget, wxT("invalid frame") );
 863
 864     // deal with the position first
 865     int old_x = m_x;
 866     int old_y = m_y;
 867
 868     if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
 869     {
 870         // -1 means "use existing" unless the flag above is specified
 871         if ( x != -1 )
 872             m_x = x;
 873         if ( y != -1 )
 874             m_y = y;
 875     }
 876     else // wxSIZE_ALLOW_MINUS_ONE
 877     {
 878         m_x = x;
 879         m_y = y;
 880     }
 881
 882     if ( m_x != old_x || m_y != old_y )
 883     {
 884         gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
 885     }
 886
 887     const wxSize oldSize(m_width, m_height);
 888     if (width >= 0)
 889         m_width = width;
 890     if (height >= 0)
 891         m_height = height;
 892     ConstrainSize();
 893     if (m_width != oldSize.x || m_height != oldSize.y)
 894     {
 895         int w, h;
 896         GTKDoGetSize(&w, &h);
 897         gtk_window_resize(GTK_WINDOW(m_widget), w, h);
 898
 899         GetClientSize(&m_oldClientWidth, &m_oldClientHeight);
 900         wxSizeEvent event(GetSize(), GetId());
 901         event.SetEventObject(this);
 902         GetEventHandler()->ProcessEvent(event);
 903     }
 904 }
 905
 906 void wxTopLevelWindowGTK::DoGetClientSize( int *width, int *height ) const
 907 {
 908     wxASSERT_MSG(m_widget, wxT("invalid frame"));
 909
 910     if ( IsIconized() )
 911     {
 912         // for consistency with wxMSW, client area is supposed to be empty for
 913         // the iconized windows
 914         if ( width )
 915             *width = 0;
 916         if ( height )
 917             *height = 0;
 918     }
 919     else
 920     {
 921         GTKDoGetSize(width, height);
 922     }
 923 }
 924
 925 void wxTopLevelWindowGTK::DoSetSizeHints( int minW, int minH,
 926                                           int maxW, int maxH,
 927                                           int incW, int incH )
 928 {
 929     wxTopLevelWindowBase::DoSetSizeHints( minW, minH, maxW, maxH, incW, incH );
 930
 931     const wxSize minSize = GetMinSize();
 932     const wxSize maxSize = GetMaxSize();
 933     GdkGeometry hints;
 934     int hints_mask = 0;
 935     const wxSize sizeDecor = GetDecorSize(m_gdkDecor);
 936     if (minSize.x > 0 || minSize.y > 0)
 937     {
 938         hints_mask |= GDK_HINT_MIN_SIZE;
 939         hints.min_width = minSize.x - sizeDecor.x;
 940         if (hints.min_width < 0)
 941             hints.min_width = 0;
 942         hints.min_height = minSize.y - sizeDecor.y;
 943         if (hints.min_height < 0)
 944             hints.min_height = 0;
 945     }
 946     if (maxSize.x > 0 || maxSize.y > 0)
 947     {
 948         hints_mask |= GDK_HINT_MAX_SIZE;
 949         hints.max_width = maxSize.x - sizeDecor.x;
 950         if (hints.max_width < 0)
 951             hints.max_width = INT_MAX;
 952         hints.max_height = maxSize.y - sizeDecor.y;
 953         if (hints.max_height < 0)
 954             hints.max_height = INT_MAX;
 955     }
 956     if (incW > 0 || incH > 0)
 957     {
 958         hints_mask |= GDK_HINT_RESIZE_INC;
 959         hints.width_inc  = incW > 0 ? incW : 1;
 960         hints.height_inc = incH > 0 ? incH : 1;
 961     }
 962     gtk_window_set_geometry_hints(
 963         (GtkWindow*)m_widget, NULL, &hints, (GdkWindowHints)hints_mask);
 964 }
 965
 966 bool wxTopLevelWindowGTK::IsDecorCacheable() const
 967 {
 968     return true;
 969 }
 970
 971 void wxTopLevelWindowGTK::OnInternalIdle()
 972 {
 973     // set the focus if not done yet and if we can already do it
 974     if ( GTK_WIDGET_REALIZED(m_wxwindow) )
 975     {
 976         if ( g_delayedFocus &&
 977              wxGetTopLevelParent((wxWindow*)g_delayedFocus) == this )
 978         {
 979             wxLogTrace(_T("focus"),
 980                        _T("Setting focus from wxTLW::OnIdle() to %s(%s)"),
 981                        g_delayedFocus->GetClassInfo()->GetClassName(),
 982                        g_delayedFocus->GetLabel().c_str());
 983
 984             g_delayedFocus->SetFocus();
 985             g_delayedFocus = NULL;
 986         }
 987     }
 988
 989     wxWindow::OnInternalIdle();
 990
 991     // Synthetize activate events.
 992     if ( g_sendActivateEvent != -1 )
 993     {
 994         bool activate = g_sendActivateEvent != 0;
 995
 996         // if (!activate) wxPrintf( wxT("de") );
 997         // wxPrintf( wxT("activate\n") );
 998
 999         // do it only once
1000         g_sendActivateEvent = -1;
1001
1002         wxTheApp->SetActive(activate, (wxWindow *)g_lastActiveFrame);
1003     }
1004 }
1005
1006 // ----------------------------------------------------------------------------
1007 // frame title/icon
1008 // ----------------------------------------------------------------------------
1009
1010 void wxTopLevelWindowGTK::SetTitle( const wxString &title )
1011 {
1012     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1013
1014     if ( title == m_title )
1015         return;
1016
1017     m_title = title;
1018
1019     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
1020 }
1021
1022 void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
1023 {
1024     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
1025
1026     wxTopLevelWindowBase::SetIcons( icons );
1027
1028     GList *list = NULL;
1029
1030     const size_t numIcons = icons.GetIconCount();
1031     for ( size_t i = 0; i < numIcons; i++ )
1032     {
1033         list = g_list_prepend(list, icons.GetIconByIndex(i).GetPixbuf());
1034     }
1035
1036     gtk_window_set_icon_list(GTK_WINDOW(m_widget), list);
1037     g_list_free(list);
1038 }
1039
1040 // ----------------------------------------------------------------------------
1041 // frame state: maximized/iconized/normal
1042 // ----------------------------------------------------------------------------
1043
1044 void wxTopLevelWindowGTK::Maximize(bool maximize)
1045 {
1046     if (maximize)
1047         gtk_window_maximize( GTK_WINDOW( m_widget ) );
1048     else
1049         gtk_window_unmaximize( GTK_WINDOW( m_widget ) );
1050 }
1051
1052 bool wxTopLevelWindowGTK::IsMaximized() const
1053 {
1054     if(!m_widget->window)
1055         return false;
1056
1057     return gdk_window_get_state(m_widget->window) & GDK_WINDOW_STATE_MAXIMIZED;
1058 }
1059
1060 void wxTopLevelWindowGTK::Restore()
1061 {
1062     // "Present" seems similar enough to "restore"
1063     gtk_window_present( GTK_WINDOW( m_widget ) );
1064 }
1065
1066 void wxTopLevelWindowGTK::Iconize( bool iconize )
1067 {
1068     if (iconize)
1069         gtk_window_iconify( GTK_WINDOW( m_widget ) );
1070     else
1071         gtk_window_deiconify( GTK_WINDOW( m_widget ) );
1072 }
1073
1074 bool wxTopLevelWindowGTK::IsIconized() const
1075 {
1076     return m_isIconized;
1077 }
1078
1079 void wxTopLevelWindowGTK::SetIconizeState(bool iconize)
1080 {
1081     if ( iconize != m_isIconized )
1082     {
1083         m_isIconized = iconize;
1084         (void)SendIconizeEvent(iconize);
1085     }
1086 }
1087
1088 void wxTopLevelWindowGTK::AddGrab()
1089 {
1090     if (!m_grabbed)
1091     {
1092         m_grabbed = true;
1093         gtk_grab_add( m_widget );
1094         wxGUIEventLoop().Run();
1095         gtk_grab_remove( m_widget );
1096     }
1097 }
1098
1099 void wxTopLevelWindowGTK::RemoveGrab()
1100 {
1101     if (m_grabbed)
1102     {
1103         gtk_main_quit();
1104         m_grabbed = false;
1105     }
1106 }
1107
1108
1109 // helper
1110 static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
1111 {
1112     if (window)
1113     {
1114         if (region.IsEmpty())
1115         {
1116             gdk_window_shape_combine_mask(window, NULL, 0, 0);
1117         }
1118         else
1119         {
1120             gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
1121             return true;
1122         }
1123     }
1124     return false;
1125 }
1126
1127
1128 bool wxTopLevelWindowGTK::SetShape(const wxRegion& region)
1129 {
1130     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
1131                  _T("Shaped windows must be created with the wxFRAME_SHAPED style."));
1132
1133     GdkWindow *window = NULL;
1134     if (m_wxwindow)
1135     {
1136         do_shape_combine_region(m_wxwindow->window, region);
1137     }
1138     window = m_widget->window;
1139     return do_shape_combine_region(window, region);
1140 }
1141
1142 bool wxTopLevelWindowGTK::IsActive()
1143 {
1144     return (this == (wxTopLevelWindowGTK*)g_activeFrame);
1145 }
1146
1147 void wxTopLevelWindowGTK::RequestUserAttention(int flags)
1148 {
1149     bool new_hint_value = false;
1150
1151     // FIXME: This is a workaround to focus handling problem
1152     // If RequestUserAttention is called for example right after a wxSleep, OnInternalIdle hasn't
1153     // yet been processed, and the internal focus system is not up to date yet.
1154     // wxYieldIfNeeded ensures the processing of it, but can have unwanted side effects - MR
1155     ::wxYieldIfNeeded();
1156
1157     if(m_urgency_hint >= 0)
1158         g_source_remove(m_urgency_hint);
1159
1160     m_urgency_hint = -2;
1161
1162     if( GTK_WIDGET_REALIZED(m_widget) && !IsActive() )
1163     {
1164         new_hint_value = true;
1165
1166         if (flags & wxUSER_ATTENTION_INFO)
1167         {
1168             m_urgency_hint = g_timeout_add(5000, (GSourceFunc)gtk_frame_urgency_timer_callback, this);
1169         } else {
1170             m_urgency_hint = -1;
1171         }
1172     }
1173
1174 #if GTK_CHECK_VERSION(2,7,0)
1175     if(!gtk_check_version(2,7,0))
1176         gtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1177     else
1178 #endif
1179         wxgtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
1180 }
1181
1182 void wxTopLevelWindowGTK::SetWindowStyleFlag( long style )
1183 {
1184     // Store which styles were changed
1185     long styleChanges = style ^ m_windowStyle;
1186
1187     // Process wxWindow styles. This also updates the internal variable
1188     // Therefore m_windowStyle bits carry now the _new_ style values
1189     wxWindow::SetWindowStyleFlag(style);
1190
1191     // just return for now if widget does not exist yet
1192     if (!m_widget)
1193         return;
1194
1195     if ( styleChanges & wxSTAY_ON_TOP )
1196     {
1197         gtk_window_set_keep_above(GTK_WINDOW(m_widget),
1198                                   m_windowStyle & wxSTAY_ON_TOP);
1199     }
1200
1201     if ( styleChanges & wxFRAME_NO_TASKBAR )
1202     {
1203         gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget),
1204                                          m_windowStyle & wxFRAME_NO_TASKBAR);
1205     }
1206 }
1207
1208 /* Get the X Window between child and the root window.
1209    This should usually be the WM managed XID */
1210 static Window wxGetTopmostWindowX11(Display *dpy, Window child)
1211 {
1212     Window root, parent;
1213     Window* children;
1214     unsigned int nchildren;
1215
1216     XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1217     XFree(children);
1218
1219     while (parent != root) {
1220         child = parent;
1221         XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
1222         XFree(children);
1223     }
1224
1225     return child;
1226 }
1227
1228 bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
1229 {
1230     if (!m_widget || !m_widget->window)
1231         return false;
1232
1233     Display* dpy = GDK_WINDOW_XDISPLAY (m_widget->window);
1234     // We need to get the X Window that has the root window as the immediate parent
1235     // and m_widget->window as a child. This should be the X Window that the WM manages and
1236     // from which the opacity property is checked from.
1237     Window win = wxGetTopmostWindowX11(dpy, GDK_WINDOW_XID (m_widget->window));
1238
1239
1240     // Using pure Xlib to not have a GTK version check mess due to gtk2.0 not having GdkDisplay
1241     if (alpha == 0xff)
1242         XDeleteProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False));
1243     else
1244     {
1245         long opacity = alpha * 0x1010101L;
1246         XChangeProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False),
1247                         XA_CARDINAL, 32, PropModeReplace,
1248                         (unsigned char *) &opacity, 1L);
1249     }
1250     XSync(dpy, False);
1251     return true;
1252 }
1253
1254 bool wxTopLevelWindowGTK::CanSetTransparent()
1255 {
1256     // allow to override automatic detection as it's far from perfect
1257     static const wxChar *SYSOPT_TRANSPARENT = wxT("gtk.tlw.can-set-transparent");
1258     if ( wxSystemOptions::HasOption(SYSOPT_TRANSPARENT) )
1259     {
1260         return wxSystemOptions::GetOptionInt(SYSOPT_TRANSPARENT) != 0;
1261     }
1262
1263 #if GTK_CHECK_VERSION(2,10,0)
1264     if (!gtk_check_version(2,10,0))
1265     {
1266         return (gtk_widget_is_composited (m_widget));
1267     }
1268     else
1269 #endif // In case of lower versions than gtk+-2.10.0 we could look for _NET_WM_CM_Sn ourselves
1270     {
1271         return false;
1272     }
1273
1274 #if 0 // Don't be optimistic here for the sake of wxAUI
1275     int opcode, event, error;
1276     // Check for the existence of a RGBA visual instead?
1277     return XQueryExtension(gdk_x11_get_default_xdisplay (),
1278                            "Composite", &opcode, &event, &error);
1279 #endif
1280 }
1281
1282 void wxTopLevelWindowGTK::OnSysColourChanged(wxSysColourChangedEvent& event)
1283 {
1284     // We don't know the order in which top-level windows will
1285     // be notified, so we need to clear the system objects
1286     // for each top-level window.
1287     extern void wxClearGtkSystemObjects();
1288     wxClearGtkSystemObjects();
1289
1290     // wxWindowBase::OnSysColourChanged will propagate event
1291     // to children
1292     event.Skip();
1293 }