]> git.saurik.com Git - wxWidgets.git/blobdiff - src/gtk/toplevel.cpp
gtk version check should be runtime, not compile time
[wxWidgets.git] / src / gtk / toplevel.cpp
index a761214759beafb642a4b54c58de2018c6799a8c..77e2dd60833dd477715cdf7582ca9001fc5fc4a8 100644 (file)
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        toplevel.cpp
+// Name:        src/gtk/toplevel.cpp
 // Purpose:
 // Author:      Robert Roebling
 // Id:          $Id$
@@ -7,6 +7,9 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
 // ============================================================================
 // declarations
 // ============================================================================
 // headers
 // ----------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "toplevel.h"
-#endif
-
-// For compilers that support precompilation, includes "wx.h".
-#include "wx/wxprec.h"
-
 #ifdef __VMS
 #define XIconifyWindow XICONIFYWINDOW
 #endif
 
-#include "wx/defs.h"
-
 #include "wx/toplevel.h"
-#include "wx/log.h"
-#include "wx/dialog.h"
-#include "wx/control.h"
-#include "wx/app.h"
-#include "wx/dcclient.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/frame.h"
+    #include "wx/icon.h"
+    #include "wx/log.h"
+    #include "wx/app.h"
+#endif
+
 #include "wx/gtk/private.h"
-#include "wx/timer.h"
-#include "wx/settings.h"
 #include "wx/evtloop.h"
+#include "wx/sysopt.h"
 
-#include <glib.h>
-#include <gdk/gdk.h>
 #include <gtk/gtk.h>
-#include <gdk/gdkkeysyms.h>
 #include <gdk/gdkx.h>
 
 #include "wx/gtk/win_gtk.h"
 // XA_CARDINAL
 #include <X11/Xatom.h>
 
-// ----------------------------------------------------------------------------
-// idle system
-// ----------------------------------------------------------------------------
-
-extern void wxapp_install_idle_handler();
-extern bool g_isIdle;
-
 // ----------------------------------------------------------------------------
 // data
 // ----------------------------------------------------------------------------
 
-extern wxList           wxPendingDelete;
-
 extern int              g_openDialogs;
 extern wxWindowGTK     *g_delayedFocus;
 
@@ -105,17 +89,16 @@ static void wxgtk_window_set_urgency_hint (GtkWindow *win,
     XFree(wm_hints);
 }
 
-static gint gtk_frame_urgency_timer_callback( GtkWidget *win )
+static gboolean gtk_frame_urgency_timer_callback( wxTopLevelWindowGTK *win )
 {
-#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2,7,0)
+#if GTK_CHECK_VERSION(2,7,0)
     if(!gtk_check_version(2,7,0))
-        gtk_window_set_urgency_hint(GTK_WINDOW( win ), FALSE);
+        gtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
     else
 #endif
-        wxgtk_window_set_urgency_hint(GTK_WINDOW( win ), FALSE);
+        wxgtk_window_set_urgency_hint(GTK_WINDOW( win->m_widget ), FALSE);
 
-    //BCI: argument from GtkWidget* to wxTopLevelWindowGTK* && win->m_urgency_hint = -2;
-    gtk_object_set_data(GTK_OBJECT(win), "m_urgency_hint", GINT_TO_POINTER(-2));
+    win->m_urgency_hint = -2;
     return FALSE;
 }
 }
@@ -125,13 +108,10 @@ static gint gtk_frame_urgency_timer_callback( GtkWidget *win )
 //-----------------------------------------------------------------------------
 
 extern "C" {
-static gint gtk_frame_focus_in_callback( GtkWidget *widget,
+static gboolean gtk_frame_focus_in_callback( GtkWidget *widget,
                                          GdkEvent *WXUNUSED(event),
                                          wxTopLevelWindowGTK *win )
 {
-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
     switch ( g_sendActivateEvent )
     {
         case -1:
@@ -152,15 +132,13 @@ static gint gtk_frame_focus_in_callback( GtkWidget *widget,
     // wxPrintf( wxT("active: %s\n"), win->GetTitle().c_str() );
 
     // MR: wxRequestUserAttention related block
-    //BCI: switch(win->m_urgency_hint)
-    switch( GPOINTER_TO_INT(gtk_object_get_data( GTK_OBJECT(widget), "m_urgency_hint") ) )
+    switch( win->m_urgency_hint )
     {
         default:
-            //BCI:
-            gtk_timeout_remove( GPOINTER_TO_INT(gtk_object_get_data( GTK_OBJECT(widget), "m_urgency_hint") ) );
+            g_source_remove( win->m_urgency_hint );
             // no break, fallthrough to remove hint too
         case -1:
-#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2,7,0)
+#if GTK_CHECK_VERSION(2,7,0)
             if(!gtk_check_version(2,7,0))
                 gtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
             else
@@ -169,8 +147,7 @@ static gint gtk_frame_focus_in_callback( GtkWidget *widget,
                 wxgtk_window_set_urgency_hint(GTK_WINDOW( widget ), FALSE);
             }
 
-            //BCI: win->m_urgency_hint = -2;
-            gtk_object_set_data( GTK_OBJECT(widget), "m_urgency_hint", GINT_TO_POINTER(-2) );
+            win->m_urgency_hint = -2;
             break;
 
         case -2: break;
@@ -190,13 +167,10 @@ static gint gtk_frame_focus_in_callback( GtkWidget *widget,
 //-----------------------------------------------------------------------------
 
 extern "C" {
-static gint gtk_frame_focus_out_callback( GtkWidget *widget,
+static gboolean gtk_frame_focus_out_callback( GtkWidget *widget,
                                           GdkEventFocus *WXUNUSED(gdk_event),
                                           wxTopLevelWindowGTK *win )
 {
-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
     // if the focus goes out of our app alltogether, OnIdle() will send
     // wxActivateEvent, otherwise gtk_window_focus_in_callback() will reset
     // g_sendActivateEvent to -1
@@ -220,22 +194,6 @@ static gint gtk_frame_focus_out_callback( GtkWidget *widget,
 }
 }
 
-//-----------------------------------------------------------------------------
-// "focus" from m_window
-//-----------------------------------------------------------------------------
-
-extern "C" {
-static gint gtk_frame_focus_callback( GtkWidget *widget, GtkDirectionType WXUNUSED(d), wxWindow *WXUNUSED(win) )
-{
-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
-    // This disables GTK's tab traversal
-    gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus" );
-    return TRUE;
-}
-}
-
 //-----------------------------------------------------------------------------
 // "size_allocate"
 //-----------------------------------------------------------------------------
@@ -243,41 +201,58 @@ static gint gtk_frame_focus_callback( GtkWidget *widget, GtkDirectionType WXUNUS
 extern "C" {
 static void gtk_frame_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxTopLevelWindowGTK *win )
 {
-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
     if (!win->m_hasVMT)
         return;
 
     if ((win->m_width != alloc->width) || (win->m_height != alloc->height))
     {
 /*
-        wxPrintf( "OnSize from " );
+        wxPrintf( wxT("gtk_frame_size_callback from ") );
         if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
            wxPrintf( win->GetClassInfo()->GetClassName() );
-        wxPrintf( " %d %d %d %d\n", (int)alloc->x,
+        wxPrintf( wxT(" %d %d %d %d\n"), (int)alloc->x,
                                 (int)alloc->y,
                                 (int)alloc->width,
                                 (int)alloc->height );
 */
 
+        // Tell the wxWindow class about the new size
         win->m_width = alloc->width;
         win->m_height = alloc->height;
+
         win->GtkUpdateSize();
     }
 }
 }
 
+// ----------------------------------------------------------------------------
+// "size_request"
+// ----------------------------------------------------------------------------
+
+extern "C" {
+void wxgtk_tlw_size_request_callback(GtkWidget * WXUNUSED(widget),
+                                     GtkRequisition *requisition,
+                                     wxTopLevelWindowGTK *win)
+{
+    // we must return the size of the window without WM decorations, otherwise
+    // GTK+ gets confused, so don't call just GetSize() here
+    int w, h;
+    win->GTKDoGetSize(&w, &h);
+
+    requisition->height = h;
+    requisition->width = w;
+}
+}
 //-----------------------------------------------------------------------------
 // "delete_event"
 //-----------------------------------------------------------------------------
 
 extern "C" {
-static gint gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxTopLevelWindowGTK *win )
+static gboolean
+gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget),
+                           GdkEvent *WXUNUSED(event),
+                           wxTopLevelWindowGTK *win )
 {
-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
     if (win->IsEnabled() &&
         (g_openDialogs == 0 || (win->GetExtraStyle() & wxTOPLEVEL_EX_DIALOG) ||
          win->IsGrabbed()))
@@ -293,23 +268,20 @@ static gint gtk_frame_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WX
 //-----------------------------------------------------------------------------
 
 extern "C" {
-static gint
-gtk_frame_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxTopLevelWindowGTK *win )
+static gboolean
+gtk_frame_configure_callback( GtkWidget* widget,
+                              GdkEventConfigure *WXUNUSED(event),
+                              wxTopLevelWindowGTK *win )
 {
-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
     if (!win->m_hasVMT || !win->IsShown())
         return FALSE;
 
+    wxPoint point;
+    gtk_window_get_position((GtkWindow*)widget, &point.x, &point.y);
 
-    int x = 0;
-    int y = 0;
-    gdk_window_get_root_origin( win->m_widget->window, &x, &y );
-    win->m_x = x;
-    win->m_y = y;
-
-    wxMoveEvent mevent( wxPoint(win->m_x,win->m_y), win->GetId() );
+    win->m_x = point.x;
+    win->m_y = point.y;
+    wxMoveEvent mevent(point, win->GetId());
     mevent.SetEventObject( win );
     win->GetEventHandler()->ProcessEvent( mevent );
 
@@ -329,9 +301,6 @@ static void
 gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
                              wxTopLevelWindowGTK *win )
 {
-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
     // All this is for Motif Window Manager "hints" and is supposed to be
     // recognized by other WM as well. Not tested.
     gdk_window_set_decorations(win->m_widget->window,
@@ -341,13 +310,13 @@ gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
 
     // GTK's shrinking/growing policy
     if ((win->m_gdkFunc & GDK_FUNC_RESIZE) == 0)
-        gtk_window_set_policy(GTK_WINDOW(win->m_widget), 0, 0, 1);
+        gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
     else
         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 
     // reset the icon
     wxIconBundle iconsOld = win->GetIcons();
-    if ( iconsOld.GetIcon(-1).Ok() )
+    if ( !iconsOld.IsEmpty() )
     {
         win->SetIcon( wxNullIcon );
         win->SetIcons( iconsOld );
@@ -360,12 +329,13 @@ gtk_frame_realized_callback( GtkWidget * WXUNUSED(widget),
 //-----------------------------------------------------------------------------
 
 extern "C" {
-static void
+static gboolean
 gtk_frame_map_callback( GtkWidget * WXUNUSED(widget),
                         GdkEvent * WXUNUSED(event),
                         wxTopLevelWindow *win )
 {
     win->SetIconizeState(false);
+    return false;
 }
 }
 
@@ -374,12 +344,13 @@ gtk_frame_map_callback( GtkWidget * WXUNUSED(widget),
 //-----------------------------------------------------------------------------
 
 extern "C" {
-static void
+static gboolean
 gtk_frame_unmap_callback( GtkWidget * WXUNUSED(widget),
                           GdkEvent * WXUNUSED(event),
                           wxTopLevelWindow *win )
 {
-    win->SetIconizeState(TRUE);
+    win->SetIconizeState(true);
+    return false;
 }
 }
 
@@ -388,7 +359,10 @@ gtk_frame_unmap_callback( GtkWidget * WXUNUSED(widget),
 //-----------------------------------------------------------------------------
 
 extern "C" {
-static int gtk_window_expose_callback( GtkWidget *widget, GdkEventExpose *gdk_event, wxWindow *win )
+static gboolean
+gtk_window_expose_callback( GtkWidget *widget,
+                            GdkEventExpose *gdk_event,
+                            wxWindow *win )
 {
     GtkPizza *pizza = GTK_PIZZA(widget);
 
@@ -404,29 +378,6 @@ static int gtk_window_expose_callback( GtkWidget *widget, GdkEventExpose *gdk_ev
 }
 }
 
-//-----------------------------------------------------------------------------
-// "draw" of m_client
-//-----------------------------------------------------------------------------
-
-#ifndef __WXGTK20__
-
-extern "C" {
-static void gtk_window_draw_callback( GtkWidget *widget, GdkRectangle *rect, wxWindow *win )
-{
-    GtkPizza *pizza = GTK_PIZZA(widget);
-
-    gtk_paint_flat_box (win->m_widget->style,
-                        pizza->bin_window, GTK_STATE_NORMAL,
-                        GTK_SHADOW_NONE,
-                        rect,
-                        win->m_widget,
-                        (char *)"base",
-                        0, 0, -1, -1);
-}
-}
-
-#endif // GTK+ 1.x
-
 // ----------------------------------------------------------------------------
 // wxTopLevelWindowGTK itself
 // ----------------------------------------------------------------------------
@@ -449,7 +400,7 @@ static void wxInsertChildInTopLevelWindow( wxTopLevelWindowGTK* parent, wxWindow
         // these are outside the client area
         wxTopLevelWindowGTK* frame = (wxTopLevelWindowGTK*) parent;
         gtk_pizza_put( GTK_PIZZA(frame->m_mainWidget),
-                         GTK_WIDGET(child->m_widget),
+                         child->m_widget,
                          child->m_x,
                          child->m_y,
                          child->m_width,
@@ -459,15 +410,12 @@ static void wxInsertChildInTopLevelWindow( wxTopLevelWindowGTK* parent, wxWindow
     {
         // these are inside the client area
         gtk_pizza_put( GTK_PIZZA(parent->m_wxwindow),
-                         GTK_WIDGET(child->m_widget),
+                         child->m_widget,
                          child->m_x,
                          child->m_y,
                          child->m_width,
                          child->m_height );
     }
-
-    // resize on OnInternalIdle
-    parent->GtkUpdateSize();
 }
 
 // ----------------------------------------------------------------------------
@@ -483,16 +431,12 @@ void wxTopLevelWindowGTK::Init()
     m_insertInClientArea = true;
     m_isIconized = false;
     m_fsIsShowing = false;
+    m_fsSaveFlag = 0;
     m_themeEnabled = true;
     m_gdkDecor = m_gdkFunc = 0;
     m_grabbed = false;
 
-    //BCI: header wx/gtk/toplevel.h:
-    // private gtk_timeout_add result for mimicing wxUSER_ATTENTION_INFO and
-    // wxUSER_ATTENTION_ERROR difference, -2 for no hint, -1 for ERROR hint, rest for GtkTimeout handle.
-    // int m_urgency_hint;
-
-    //BCI: m_urgency_hint = -2;
+    m_urgency_hint = -2;
 }
 
 bool wxTopLevelWindowGTK::Create( wxWindow *parent,
@@ -511,8 +455,6 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
 
     wxTopLevelWindows.Append( this );
 
-    m_needParent = false;
-
     if (!PreCreation( parent, pos, size ) ||
         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
     {
@@ -530,7 +472,6 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
     {
         if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
         {
-#ifdef __WXGTK20__
             m_widget = gtk_window_new(GTK_WINDOW_TOPLEVEL);
             // Tell WM that this is a dialog window and make it center
             // on parent by default (this is what GtkDialog ctor does):
@@ -538,9 +479,6 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
                                      GDK_WINDOW_TYPE_HINT_DIALOG);
             gtk_window_set_position(GTK_WINDOW(m_widget),
                                     GTK_WIN_POS_CENTER_ON_PARENT);
-#else
-            m_widget = gtk_window_new(GTK_WINDOW_DIALOG);
-#endif
         }
         else
         {
@@ -566,9 +504,6 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
         }
     }
 
-    // BCI:
-    gtk_object_set_data( GTK_OBJECT(m_widget), "m_urgency_hint", GINT_TO_POINTER(-2) );
-
     wxWindow *topParent = wxGetTopLevelParent(m_parent);
     if (topParent && (((GTK_IS_WINDOW(topParent->m_widget)) &&
                        (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)) ||
@@ -588,7 +523,7 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
     }
 #endif
 
-#if GTK_CHECK_VERSION(2,4,0)
+#ifdef __WXGTK24__
     if (!gtk_check_version(2,4,0))
     {
         if (style & wxSTAY_ON_TOP)
@@ -598,14 +533,16 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
     }
 #endif
 
+#if 0
     if (!name.empty())
-        gtk_window_set_wmclass( GTK_WINDOW(m_widget), wxGTK_CONV( name ), wxGTK_CONV( name ) );
+        gtk_window_set_role( GTK_WINDOW(m_widget), wxGTK_CONV( name ) );
+#endif
 
     gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 
-    gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
-        GTK_SIGNAL_FUNC(gtk_frame_delete_callback), (gpointer)this );
+    g_signal_connect (m_widget, "delete_event",
+                      G_CALLBACK (gtk_frame_delete_callback), this);
 
     // m_mainWidget holds the toolbar, the menubar and the client area
     m_mainWidget = gtk_pizza_new();
@@ -616,12 +553,8 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
     if (m_miniEdge == 0) // wxMiniFrame has its own version.
     {
        // For m_mainWidget themes
-       gtk_signal_connect( GTK_OBJECT(m_mainWidget), "expose_event",
-                GTK_SIGNAL_FUNC(gtk_window_expose_callback), (gpointer)this );
-#ifndef __WXGTK20__
-       gtk_signal_connect( GTK_OBJECT(m_mainWidget), "draw",
-                GTK_SIGNAL_FUNC(gtk_window_draw_callback), (gpointer)this );
-#endif
+       g_signal_connect (m_mainWidget, "expose_event",
+                         G_CALLBACK (gtk_window_expose_callback), this);
     }
 
     // m_wxwindow only represents the client area without toolbar and menubar
@@ -636,9 +569,11 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
     if (m_parent) m_parent->AddChild( this );
 
     // the user resized the frame by dragging etc.
-    gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
-        GTK_SIGNAL_FUNC(gtk_frame_size_callback), (gpointer)this );
+    g_signal_connect (m_widget, "size_allocate",
+                      G_CALLBACK (gtk_frame_size_callback), this);
 
+    g_signal_connect (m_widget, "size_request",
+                      G_CALLBACK (wxgtk_tlw_size_request_callback), this);
     PostCreation();
 
     if ((m_x != -1) || (m_y != -1))
@@ -648,36 +583,41 @@ bool wxTopLevelWindowGTK::Create( wxWindow *parent,
 
     //  we cannot set MWM hints and icons before the widget has
     //  been realized, so we do this directly after realization
-    gtk_signal_connect( GTK_OBJECT(m_widget), "realize",
-                        GTK_SIGNAL_FUNC(gtk_frame_realized_callback), (gpointer) this );
+    g_signal_connect (m_widget, "realize",
+                      G_CALLBACK (gtk_frame_realized_callback), this);
 
     // map and unmap for iconized state
-    gtk_signal_connect( GTK_OBJECT(m_widget), "map_event",
-        GTK_SIGNAL_FUNC(gtk_frame_map_callback), (gpointer)this );
-    gtk_signal_connect( GTK_OBJECT(m_widget), "unmap_event",
-        GTK_SIGNAL_FUNC(gtk_frame_unmap_callback), (gpointer)this );
-
-    // the only way to get the window size is to connect to this event
-    gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
-        GTK_SIGNAL_FUNC(gtk_frame_configure_callback), (gpointer)this );
+    g_signal_connect (m_widget, "map_event",
+                      G_CALLBACK (gtk_frame_map_callback), this);
+    g_signal_connect (m_widget, "unmap_event",
+                      G_CALLBACK (gtk_frame_unmap_callback), this);
 
-    // disable native tab traversal
-    gtk_signal_connect( GTK_OBJECT(m_widget), "focus",
-        GTK_SIGNAL_FUNC(gtk_frame_focus_callback), (gpointer)this );
+    // for wxMoveEvent
+    g_signal_connect (m_widget, "configure_event",
+                      G_CALLBACK (gtk_frame_configure_callback), this);
 
     // activation
-    gtk_signal_connect( GTK_OBJECT(m_widget), "focus_in_event",
-        GTK_SIGNAL_FUNC(gtk_frame_focus_in_callback), (gpointer)this );
-    gtk_signal_connect( GTK_OBJECT(m_widget), "focus_out_event",
-        GTK_SIGNAL_FUNC(gtk_frame_focus_out_callback), (gpointer)this );
+    g_signal_connect_after (m_widget, "focus_in_event",
+                      G_CALLBACK (gtk_frame_focus_in_callback), this);
+    g_signal_connect_after (m_widget, "focus_out_event",
+                      G_CALLBACK (gtk_frame_focus_out_callback), this);
 
     // decorations
-    if ((m_miniEdge > 0) || (style & wxSIMPLE_BORDER) || (style & wxNO_BORDER))
+    if ((style & wxSIMPLE_BORDER) || (style & wxNO_BORDER))
     {
         m_gdkDecor = 0;
         m_gdkFunc = 0;
     }
     else
+    if (m_miniEdge > 0)
+    {
+        m_gdkDecor = 0;
+        m_gdkFunc = 0;
+
+        if ((style & wxRESIZE_BORDER) != 0)
+           m_gdkFunc |= GDK_FUNC_RESIZE;
+    }
+    else
     {
         m_gdkDecor = (long) GDK_DECOR_BORDER;
         m_gdkFunc = (long) GDK_FUNC_MOVE;
@@ -720,7 +660,7 @@ wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
 {
     if (m_grabbed)
     {
-        wxASSERT_MSG( FALSE, _T("Window still grabbed"));
+        wxFAIL_MSG(_T("Window still grabbed"));
         RemoveGrab();
     }
 
@@ -738,7 +678,18 @@ wxTopLevelWindowGTK::~wxTopLevelWindowGTK()
         g_lastActiveFrame = NULL;
 }
 
+bool wxTopLevelWindowGTK::EnableCloseButton( bool enable )
+{
+    if (enable)
+        m_gdkFunc |= GDK_FUNC_CLOSE;
+    else
+        m_gdkFunc &= ~GDK_FUNC_CLOSE;
 
+    if (GTK_WIDGET_REALIZED(m_widget) && (m_widget->window))
+        gdk_window_set_functions( m_widget->window, (GdkWMFunction)m_gdkFunc );
+
+    return true;
+}
 
 bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long style )
 {
@@ -759,9 +710,15 @@ bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long style )
     if ( (method == wxX11_FS_WMSPEC) && !gtk_check_version(2,2,0) )
     {
         if (show)
+        {
+            m_fsSaveFlag = style;
             gtk_window_fullscreen( GTK_WINDOW( m_widget ) );
+        }
         else
+        {
+            m_fsSaveFlag = 0;
             gtk_window_unfullscreen( GTK_WINDOW( m_widget ) );
+        }
     }
     else
 #endif // GTK+ >= 2.2.0
@@ -804,6 +761,7 @@ bool wxTopLevelWindowGTK::ShowFullScreen(bool show, long style )
         }
         else // hide
         {
+            m_fsSaveFlag = 0;
             if (method != wxX11_FS_WMSPEC)
             {
                 // don't do it always, Metacity hates it
@@ -839,6 +797,9 @@ bool wxTopLevelWindowGTK::Show( bool show )
 {
     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 
+    if (show == IsShown())
+        return false;
+
     if (show && !m_sizeSet)
     {
         /* by calling GtkOnSize here, we don't have to call
@@ -846,22 +807,25 @@ bool wxTopLevelWindowGTK::Show( bool show )
            much ugly flicker or from within the size_allocate
            handler, because GTK 1.1.X forbids that. */
 
-        GtkOnSize( m_x, m_y, m_width, m_height );
+        GtkOnSize();
     }
 
-    if (show)
-        gtk_widget_set_uposition( m_widget, m_x, m_y );
+    wxTopLevelWindowBase::Show(show);
+
+    if (!show)
+    {
+        // make sure window has a non-default position, so when it is shown
+        // again, it won't be repositioned by WM as if it were a new window
+        // Note that this must be done _after_ the window is hidden.
+        gtk_window_move((GtkWindow*)m_widget, m_x, m_y);
+    }
 
-    return wxWindow::Show( show );
+    return true;
 }
 
 void wxTopLevelWindowGTK::Raise()
 {
-#ifdef __WXGTK20__
     gtk_window_present( GTK_WINDOW( m_widget ) );
-#else
-    wxWindow::Raise();
-#endif
 }
 
 void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
@@ -869,218 +833,203 @@ void wxTopLevelWindowGTK::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXU
     wxFAIL_MSG( wxT("DoMoveWindow called for wxTopLevelWindowGTK") );
 }
 
-void wxTopLevelWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
-{
-    wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
+// ----------------------------------------------------------------------------
+// window geometry
+// ----------------------------------------------------------------------------
 
-    // this shouldn't happen: wxFrame, wxMDIParentFrame and wxMDIChildFrame have m_wxwindow
-    wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid frame") );
+void wxTopLevelWindowGTK::GTKDoGetSize(int *width, int *height) const
+{
+    return wxTopLevelWindowBase::DoGetSize(width, height);
+}
 
+void wxTopLevelWindowGTK::GTKDoSetSize(int width, int height)
+{
     // avoid recursions
     if (m_resizing)
         return;
     m_resizing = true;
 
-    int old_x = m_x;
-    int old_y = m_y;
-
     int old_width = m_width;
     int old_height = m_height;
 
-    if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0)
+    if ( width != -1 )
+        m_width = width;
+    if ( height != -1 )
+        m_height = height;
+
+    ConstrainSize();
+
+    if ( m_width != old_width || m_height != old_height )
     {
-        if (x != -1) m_x = x;
-        if (y != -1) m_y = y;
+        gtk_window_resize( GTK_WINDOW(m_widget), m_width, m_height );
+
+        /* we set the size in GtkOnSize, i.e. mostly the actual resizing is
+           done either directly before the frame is shown or in idle time
+           so that different calls to SetSize() don't lead to flicker. */
+        m_sizeSet = false;
     }
-    else
+
+    m_resizing = false;
+}
+
+void wxTopLevelWindowGTK::DoSetSize( int x, int y, int width, int height, int sizeFlags )
+{
+    wxCHECK_RET( m_widget, wxT("invalid frame") );
+
+    // this shouldn't happen: wxFrame, wxMDIParentFrame and wxMDIChildFrame have m_wxwindow
+    wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid frame") );
+
+
+    // deal with the position first
+    int old_x = m_x;
+    int old_y = m_y;
+
+    if ( !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE) )
+    {
+        // -1 means "use existing" unless the flag above is specified
+        if ( x != -1 )
+            m_x = x;
+        if ( y != -1 )
+            m_y = y;
+    }
+    else // wxSIZE_ALLOW_MINUS_ONE
     {
         m_x = x;
         m_y = y;
     }
-    if (width != -1) m_width = width;
-    if (height != -1) m_height = height;
 
-/*
-    if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
+    if ( m_x != old_x || m_y != old_y )
     {
-        if (width == -1) m_width = 80;
+        gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
     }
 
-    if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
+
+    // and now change the size: as we want to set the size of the entire
+    // window, including decorations, we must adjust the size passed to
+    // GTKDoSetSize() which takes with the size of undecorated frame only
+    if ( width != -1 || height != -1 )
     {
-       if (height == -1) m_height = 26;
+        int wTotal,
+            hTotal;
+        DoGetSize(&wTotal, &hTotal);
+
+        int wUndec,
+            hUndec;
+        GTKDoGetSize(&wUndec, &hUndec);
+
+        if ( width != -1 )
+            width -= wTotal - wUndec;
+        if ( height != -1 )
+            height -= hTotal - hUndec;
     }
-*/
 
-    int minWidth = GetMinWidth(),
-        minHeight = GetMinHeight(),
-        maxWidth = GetMaxWidth(),
-        maxHeight = GetMaxHeight();
-
-#ifdef __WXGPE__
-    // GPE's window manager doesn't like size hints
-    // at all, esp. when the user has to use the
-    // virtual keyboard.
-    minWidth = -1;
-    minHeight = -1;
-    maxWidth = -1;
-    maxHeight = -1;
-#endif
+    GTKDoSetSize(width, height);
+}
 
-    if ((minWidth != -1) && (m_width < minWidth)) m_width = minWidth;
-    if ((minHeight != -1) && (m_height < minHeight)) m_height = minHeight;
-    if ((maxWidth != -1) && (m_width > maxWidth)) m_width = maxWidth;
-    if ((maxHeight != -1) && (m_height > maxHeight)) m_height = maxHeight;
+void wxTopLevelWindowGTK::DoGetSize(int *width, int *height) const
+{
+    wxCHECK_RET( m_widget, wxT("invalid frame") );
 
-    if ((m_x != -1) || (m_y != -1))
+    if ( !m_widget->window )
     {
-        if ((m_x != old_x) || (m_y != old_y))
-        {
-            gtk_widget_set_uposition( m_widget, m_x, m_y );
-        }
+        // this can happen if we're called before the window is realized, so
+        // don't assert but just return the stored values
+        GTKDoGetSize(width, height);
+        return;
     }
 
-    if ((m_width != old_width) || (m_height != old_height))
-    {
-        if (m_widget->window)
-            gdk_window_resize( m_widget->window, m_width, m_height );
-        else
-            gtk_window_set_default_size( GTK_WINDOW(m_widget), m_width, m_height );
+    GdkRectangle rect;
+    gdk_window_get_frame_extents(m_widget->window, &rect);
 
-        /* we set the size in GtkOnSize, i.e. mostly the actual resizing is
-           done either directly before the frame is shown or in idle time
-           so that different calls to SetSize() don't lead to flicker. */
-        m_sizeSet = false;
-    }
-
-    m_resizing = false;
+    if ( width )
+        *width = rect.width;
+    if ( height )
+        *height = rect.height;
 }
 
 void wxTopLevelWindowGTK::DoGetClientSize( int *width, int *height ) const
 {
+    if ( IsIconized() )
+    {
+        // for consistency with wxMSW, client area is supposed to be empty for
+        // the iconized windows
+        if ( width )
+            *width = 0;
+        if ( height )
+            *height = 0;
+
+        return;
+    }
+
     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 
-    wxWindow::DoGetClientSize( width, height );
     if (height)
     {
-        // mini edge
-        *height -= m_miniEdge*2 + m_miniTitle;
+        *height = m_height - 2 * m_miniEdge - m_miniTitle;
+        if (*height < 0)
+            *height = 0;
     }
     if (width)
     {
-        *width -= m_miniEdge*2;
+        *width = m_width - 2 * m_miniEdge;
+        if (*width < 0)
+            *width = 0;
     }
 }
 
 void wxTopLevelWindowGTK::DoSetClientSize( int width, int height )
 {
-    wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
-
-    DoSetSize(-1, -1,
-              width + m_miniEdge*2, height  + m_miniEdge*2 + m_miniTitle, 0);
+    GTKDoSetSize(width + m_miniEdge*2, height  + m_miniEdge*2 + m_miniTitle);
 }
 
-void wxTopLevelWindowGTK::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y),
-                                     int width, int height )
+void wxTopLevelWindowGTK::DoSetSizeHints( int minW, int minH,
+                                          int maxW, int maxH,
+                                          int incW, int incH )
 {
-    // due to a bug in gtk, x,y are always 0
-    // m_x = x;
-    // m_y = y;
+    wxTopLevelWindowBase::DoSetSizeHints( minW, minH, maxW, maxH, incW, incH );
+
+    const wxSize minSize = GetMinSize();
+    const wxSize maxSize = GetMaxSize();
+    GdkGeometry hints;
+    int hints_mask = 0;
+    if (minSize.x > 0 || minSize.y > 0)
+    {
+        hints_mask |= GDK_HINT_MIN_SIZE;
+        hints.min_width  = minSize.x > 0 ? minSize.x : 0;
+        hints.min_height = minSize.y > 0 ? minSize.y : 0;
+    }
+    if (maxSize.x > 0 || maxSize.y > 0)
+    {
+        hints_mask |= GDK_HINT_MAX_SIZE;
+        hints.max_width  = maxSize.x > 0 ? maxSize.x : INT_MAX;
+        hints.max_height = maxSize.y > 0 ? maxSize.y : INT_MAX;
+    }
+    if (incW > 0 || incH > 0)
+    {
+        hints_mask |= GDK_HINT_RESIZE_INC;
+        hints.width_inc  = incW > 0 ? incW : 1;
+        hints.height_inc = incH > 0 ? incH : 1;
+    }
+    gtk_window_set_geometry_hints(
+        (GtkWindow*)m_widget, NULL, &hints, (GdkWindowHints)hints_mask);
+}
 
+
+void wxTopLevelWindowGTK::GtkOnSize()
+{
     // avoid recursions
     if (m_resizing) return;
     m_resizing = true;
 
     if ( m_wxwindow == NULL ) return;
 
-    m_width = width;
-    m_height = height;
-
-    /* wxMDIChildFrame derives from wxFrame but it _is_ a wxWindow as it uses
-       wxWindow::Create to create it's GTK equivalent. m_mainWidget is only
-       set in wxFrame::Create so it is used to check what kind of frame we
-       have here. if m_mainWidget is NULL it is a wxMDIChildFrame and so we
-       skip the part which handles m_frameMenuBar, m_frameToolBar and (most
-       importantly) m_mainWidget */
-
-    int minWidth = GetMinWidth(),
-        minHeight = GetMinHeight(),
-        maxWidth = GetMaxWidth(),
-        maxHeight = GetMaxHeight();
-
-#ifdef __WXGPE__
-    // GPE's window manager doesn't like size hints
-    // at all, esp. when the user has to use the
-    // virtual keyboard.
-    minWidth = -1;
-    minHeight = -1;
-    maxWidth = -1;
-    maxHeight = -1;
-#endif
-
-    if ((minWidth != -1) && (m_width < minWidth)) m_width = minWidth;
-    if ((minHeight != -1) && (m_height < minHeight)) m_height = minHeight;
-    if ((maxWidth != -1) && (m_width > maxWidth)) m_width = maxWidth;
-    if ((maxHeight != -1) && (m_height > maxHeight)) m_height = maxHeight;
+    ConstrainSize();
 
     if (m_mainWidget)
     {
-        // set size hints
-        gint            flag = 0; // GDK_HINT_POS;
-        GdkGeometry     geom;
-
-        if ((minWidth != -1) || (minHeight != -1)) flag |= GDK_HINT_MIN_SIZE;
-        if ((maxWidth != -1) || (maxHeight != -1)) flag |= GDK_HINT_MAX_SIZE;
-
-        geom.min_width = minWidth;
-        geom.min_height = minHeight;
-
-            // Because of the way we set GDK_HINT_MAX_SIZE above, if either of
-            // maxHeight or maxWidth is set, we must set them both, else the
-            // remaining -1 will be taken literally.
-
-            // I'm certain this also happens elsewhere, and is the probable
-            // cause of other such things as:
-            // Gtk-WARNING **: gtk_widget_size_allocate():
-            //       attempt to allocate widget with width 65535 and height 600
-            // but I don't have time to track them all now..
-            //
-            // Really we need to encapulate all this height/width business and
-            // stop any old method from ripping at the members directly and
-            // scattering -1's without regard for who might resolve them later.
-
-        geom.max_width = ( maxHeight == -1 ) ? maxWidth
-                         : ( maxWidth == -1 ) ? wxGetDisplaySize().GetWidth()
-                           : maxWidth ;
-
-        geom.max_height = ( maxWidth == -1 ) ? maxHeight    // ( == -1 here )
-                          : ( maxHeight == -1 ) ? wxGetDisplaySize().GetHeight()
-                            : maxHeight ;
-
-        gtk_window_set_geometry_hints( GTK_WINDOW(m_widget),
-                                       (GtkWidget*) NULL,
-                                       &geom,
-                                       (GdkWindowHints) flag );
-
-        /* I revert back to wxGTK's original behaviour. m_mainWidget holds the
-         * menubar, the toolbar and the client area, which is represented by
-         * m_wxwindow.
-         * this hurts in the eye, but I don't want to call SetSize()
-         * because I don't want to call any non-native functions here. */
-
-        int client_x = m_miniEdge;
-        int client_y = m_miniEdge + m_miniTitle;
-        int client_w = m_width - 2*m_miniEdge;
-        int client_h = m_height - 2*m_miniEdge - m_miniTitle;
-
         gtk_pizza_set_size( GTK_PIZZA(m_mainWidget),
                               m_wxwindow,
-                              client_x, client_y, client_w, client_h );
-    }
-    else
-    {
-        // If there is no m_mainWidget between m_widget and m_wxwindow there
-        // is no need to set the size or position of m_wxwindow.
+                              0, 0, m_width, m_height);
     }
 
     m_sizeSet = true;
@@ -1097,11 +1046,9 @@ void wxTopLevelWindowGTK::OnInternalIdle()
 {
     if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
     {
-        GtkOnSize( m_x, m_y, m_width, m_height );
+        GtkOnSize();
 
         // we'll come back later
-        if (g_isIdle)
-            wxapp_install_idle_handler();
         return;
     }
 
@@ -1146,13 +1093,12 @@ void wxTopLevelWindowGTK::SetTitle( const wxString &title )
 {
     wxASSERT_MSG( (m_widget != NULL), wxT("invalid frame") );
 
+    if ( title == m_title )
+        return;
+
     m_title = title;
-    gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
-}
 
-void wxTopLevelWindowGTK::SetIcon( const wxIcon &icon )
-{
-    SetIcons( wxIconBundle( icon ) );
+    gtk_window_set_title( GTK_WINDOW(m_widget), wxGTK_CONV( title ) );
 }
 
 void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
@@ -1161,38 +1107,16 @@ void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
 
     wxTopLevelWindowBase::SetIcons( icons );
 
-#ifdef __WXGTK20__
     GList *list = NULL;
-    size_t max = icons.m_icons.GetCount();
 
-    for (size_t i = 0; i < max; i++)
+    const size_t numIcons = icons.GetIconCount();
+    for ( size_t i = 0; i < numIcons; i++ )
     {
-        if (icons.m_icons[i].Ok())
-        {
-            list = g_list_prepend(list, icons.m_icons[i].GetPixbuf());
-        }
+        list = g_list_prepend(list, icons.GetIconByIndex(i).GetPixbuf());
     }
+
     gtk_window_set_icon_list(GTK_WINDOW(m_widget), list);
     g_list_free(list);
-
-#else // !__WXGTK20__
-    GdkWindow* window = m_widget->window;
-    if (!window)
-        return;
-
-    wxIcon icon = icons.GetIcon(-1);
-    if (icon.Ok())
-    {
-        wxMask *mask = icon.GetMask();
-        GdkBitmap *bm = (GdkBitmap *) NULL;
-        if (mask) bm = mask->GetBitmap();
-
-        gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
-    }
-
-    wxSetIconsX11( (WXDisplay*)GDK_WINDOW_XDISPLAY( window ),
-                   (WXWindow)GDK_WINDOW_XWINDOW( window ), icons );
-#endif // !__WXGTK20__
 }
 
 // ----------------------------------------------------------------------------
@@ -1201,61 +1125,32 @@ void wxTopLevelWindowGTK::SetIcons( const wxIconBundle &icons )
 
 void wxTopLevelWindowGTK::Maximize(bool maximize)
 {
-#ifdef __WXGTK20__
     if (maximize)
         gtk_window_maximize( GTK_WINDOW( m_widget ) );
     else
         gtk_window_unmaximize( GTK_WINDOW( m_widget ) );
-#else
-    wxFAIL_MSG( _T("not implemented") );
-#endif
 }
 
 bool wxTopLevelWindowGTK::IsMaximized() const
 {
-#ifdef __WXGTK20__
     if(!m_widget->window)
         return false;
 
     return gdk_window_get_state(m_widget->window) & GDK_WINDOW_STATE_MAXIMIZED;
-#else
-  //    wxFAIL_MSG( _T("not implemented") );
-
-    // This is an approximation
-    return false;
-#endif
 }
 
 void wxTopLevelWindowGTK::Restore()
 {
-#ifdef __WXGTK20__
     // "Present" seems similar enough to "restore"
     gtk_window_present( GTK_WINDOW( m_widget ) );
-#else
-    wxFAIL_MSG( _T("not implemented") );
-#endif
 }
 
 void wxTopLevelWindowGTK::Iconize( bool iconize )
 {
-#ifdef __WXGTK20__
     if (iconize)
         gtk_window_iconify( GTK_WINDOW( m_widget ) );
     else
         gtk_window_deiconify( GTK_WINDOW( m_widget ) );
-#else
-   if (iconize)
-   {
-       GdkWindow *window = m_widget->window;
-
-       // you should do it later, for example from OnCreate() handler
-       wxCHECK_RET( window, _T("frame not created yet - can't iconize") );
-
-       XIconifyWindow( GDK_WINDOW_XDISPLAY( window ),
-                       GDK_WINDOW_XWINDOW( window ),
-                       DefaultScreen( GDK_DISPLAY() ) );
-   }
-#endif
 }
 
 bool wxTopLevelWindowGTK::IsIconized() const
@@ -1278,7 +1173,7 @@ void wxTopLevelWindowGTK::AddGrab()
     {
         m_grabbed = true;
         gtk_grab_add( m_widget );
-        wxEventLoop().Run();
+        wxGUIEventLoop().Run();
         gtk_grab_remove( m_widget );
     }
 }
@@ -1304,14 +1199,7 @@ static bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
         }
         else
         {
-#ifdef __WXGTK20__
             gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
-#else
-            wxBitmap bmp = region.ConvertToBitmap();
-            bmp.SetMask(new wxMask(bmp, *wxBLACK));
-            GdkBitmap* mask = bmp.GetMask()->GetBitmap();
-            gdk_window_shape_combine_mask(window, mask, 0, 0);
-#endif
             return true;
         }
     }
@@ -1349,17 +1237,10 @@ void wxTopLevelWindowGTK::RequestUserAttention(int flags)
     // wxYieldIfNeeded ensures the processing of it, but can have unwanted side effects - MR
     ::wxYieldIfNeeded();
 
-    /*BCI:
     if(m_urgency_hint >= 0)
-        gtk_timeout_remove(m_urgency_hint);
-    */
-    int urgency_hint = GPOINTER_TO_INT( gtk_object_get_data( GTK_OBJECT(m_widget), "m_urgency_hint") );
-    if(urgency_hint >= 0)
-        gtk_timeout_remove(urgency_hint);
-    //BCI: END
+        g_source_remove(m_urgency_hint);
 
-    //BCI: m_urgency_hint = -2;
-    gtk_object_set_data( GTK_OBJECT(m_widget), "m_urgency_hint", GINT_TO_POINTER(-2));
+    m_urgency_hint = -2;
 
     if( GTK_WIDGET_REALIZED(m_widget) && !IsActive() )
     {
@@ -1367,21 +1248,117 @@ void wxTopLevelWindowGTK::RequestUserAttention(int flags)
 
         if (flags & wxUSER_ATTENTION_INFO)
         {
-            //BCI: m_urgency_hint = gtk_timeout_add(5000, (GtkFunction)gtk_frame_urgency_timer_callback, this);
-            gtk_object_set_data( GTK_OBJECT(m_widget), "m_urgency_hint",
-                                 GINT_TO_POINTER( gtk_timeout_add(5000,
-                                         (GtkFunction)gtk_frame_urgency_timer_callback,
-                                         m_widget) ) );
+            m_urgency_hint = g_timeout_add(5000, (GSourceFunc)gtk_frame_urgency_timer_callback, this);
         } else {
-            //BCI: m_urgency_hint = -1;
-            gtk_object_set_data( GTK_OBJECT(m_widget), "m_urgency_hint", GINT_TO_POINTER(-1) );
+            m_urgency_hint = -1;
         }
     }
 
-#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2,7,0)
+#if GTK_CHECK_VERSION(2,7,0)
     if(!gtk_check_version(2,7,0))
         gtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
     else
 #endif
         wxgtk_window_set_urgency_hint(GTK_WINDOW( m_widget ), new_hint_value);
 }
+
+void wxTopLevelWindowGTK::SetWindowStyleFlag( long style )
+{
+#if defined(__WXGTK24__) || GTK_CHECK_VERSION(2,2,0)
+    // Store which styles were changed
+    long styleChanges = style ^ m_windowStyle;
+#endif
+
+    // Process wxWindow styles. This also updates the internal variable
+    // Therefore m_windowStyle bits carry now the _new_ style values
+    wxWindow::SetWindowStyleFlag(style);
+
+    // just return for now if widget does not exist yet
+    if (!m_widget)
+        return;
+
+#ifdef __WXGTK24__
+    if ( (styleChanges & wxSTAY_ON_TOP) && !gtk_check_version(2,4,0) )
+        gtk_window_set_keep_above(GTK_WINDOW(m_widget), m_windowStyle & wxSTAY_ON_TOP);
+#endif // GTK+ 2.4
+#if GTK_CHECK_VERSION(2,2,0)
+    if ( (styleChanges & wxFRAME_NO_TASKBAR) && !gtk_check_version(2,2,0) )
+    {
+        gtk_window_set_skip_taskbar_hint(GTK_WINDOW(m_widget), m_windowStyle & wxFRAME_NO_TASKBAR);
+    }
+#endif // GTK+ 2.2
+}
+
+#include <X11/Xlib.h>
+
+/* Get the X Window between child and the root window.
+   This should usually be the WM managed XID */
+static Window wxGetTopmostWindowX11(Display *dpy, Window child)
+{
+    Window root, parent;
+    Window* children;
+    unsigned int nchildren;
+
+    XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
+    XFree(children);
+
+    while (parent != root) {
+        child = parent;
+        XQueryTree(dpy, child, &root, &parent, &children, &nchildren);
+        XFree(children);
+    }
+
+    return child;
+}
+
+bool wxTopLevelWindowGTK::SetTransparent(wxByte alpha)
+{
+    if (!m_widget || !m_widget->window)
+        return false;
+
+    Display* dpy = GDK_WINDOW_XDISPLAY (m_widget->window);
+    // We need to get the X Window that has the root window as the immediate parent
+    // and m_widget->window as a child. This should be the X Window that the WM manages and
+    // from which the opacity property is checked from.
+    Window win = wxGetTopmostWindowX11(dpy, GDK_WINDOW_XID (m_widget->window));
+
+    unsigned int opacity = alpha * 0x1010101;
+
+    // Using pure Xlib to not have a GTK version check mess due to gtk2.0 not having GdkDisplay
+    if (alpha == 0xff)
+        XDeleteProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False));
+    else
+        XChangeProperty(dpy, win, XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False),
+                        XA_CARDINAL, 32, PropModeReplace,
+                        (unsigned char *) &opacity, 1L);
+    XSync(dpy, False);
+    return true;
+}
+
+bool wxTopLevelWindowGTK::CanSetTransparent()
+{
+    // allow to override automatic detection as it's far from perfect
+    static const wxChar *SYSOPT_TRANSPARENT = wxT("gtk.tlw.can-set-transparent");
+    if ( wxSystemOptions::HasOption(SYSOPT_TRANSPARENT) )
+    {
+        return wxSystemOptions::GetOptionInt(SYSOPT_TRANSPARENT) != 0;
+    }
+
+#if GTK_CHECK_VERSION(2,10,0)
+    if (!gtk_check_version(2,10,0))
+    {
+        return (gtk_widget_is_composited (m_widget));
+    }
+    else
+#endif // In case of lower versions than gtk+-2.10.0 we could look for _NET_WM_CM_Sn ourselves
+    {
+        return false;
+    }
+
+#if 0 // Don't be optimistic here for the sake of wxAUI
+    int opcode, event, error;
+    // Check for the existence of a RGBA visual instead?
+    return XQueryExtension(gdk_x11_get_default_xdisplay (),
+                           "Composite", &opcode, &event, &error);
+#endif
+}