overriding to allocate an outer autorelease pool

[wxWidgets.git] / src / gtk / dnd.cpp

diff --git a/src/gtk/dnd.cpp b/src/gtk/dnd.cpp
index 9fd807bddb3944b570493e1d16b830d5a88d6ef3..db30dd5c47714b5d365c603ff8d25128c89abd68 100644 (file)
--- a/src/gtk/dnd.cpp
+++ b/src/gtk/dnd.cpp
@@ -23,6 +23,8 @@
     #include "wx/gdicmn.h"
 #endif
 
     #include "wx/gdicmn.h"
 #endif
 

+#include "wx/scopeguard.h"
+

 #include <gtk/gtk.h>
 
 //----------------------------------------------------------------------------
 #include <gtk/gtk.h>
 
 //----------------------------------------------------------------------------


@@ -34,12 +36,10 @@ extern bool g_blockEventsOnDrag;
 // the flags used for the last DoDragDrop()
 static long gs_flagsForDrag = 0;
 
 // the flags used for the last DoDragDrop()
 static long gs_flagsForDrag = 0;
 

-#ifdef __WXDEBUG__

 // the trace mask we use with wxLogTrace() - call
 // wxLog::AddTraceMask(TRACE_DND) to enable the trace messages from here
 // (there are quite a few of them, so don't enable this by default)
 // the trace mask we use with wxLogTrace() - call
 // wxLog::AddTraceMask(TRACE_DND) to enable the trace messages from here
 // (there are quite a few of them, so don't enable this by default)

-static const wxChar *TRACE_DND = _T("dnd");
-#endif
+#define TRACE_DND "dnd"

 
 // global variables because GTK+ DnD want to have the
 // mouse event that caused it
 
 // global variables because GTK+ DnD want to have the
 // mouse event that caused it


@@ -164,7 +164,7 @@ static void target_drag_leave( GtkWidget *WXUNUSED(widget),
 {
     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */
 {
     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */

-    drop_target->SetDragContext( context );
+    drop_target->GtkSetDragContext( context );

 
     /* we don't need return values. this event is just for
        information */
 
     /* we don't need return values. this event is just for
        information */


@@ -174,7 +174,7 @@ static void target_drag_leave( GtkWidget *WXUNUSED(widget),
     drop_target->m_firstMotion = true;
 
     /* after this, invalidate the drop_target's GdkDragContext */
     drop_target->m_firstMotion = true;
 
     /* after this, invalidate the drop_target's GdkDragContext */

-    drop_target->SetDragContext( (GdkDragContext*) NULL );
+    drop_target->GtkSetDragContext( NULL );

 }
 }
 
 }
 }
 


@@ -194,9 +194,19 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
        return FALSE, otherwise call gtk_drag_status() and
        return TRUE" */
 
        return FALSE, otherwise call gtk_drag_status() and
        return TRUE" */
 

+#if 0
+    wxPrintf( "motion\n" );
+    GList *tmp_list;
+    for (tmp_list = context->targets; tmp_list; tmp_list = tmp_list->next)
+    {
+        wxString atom = wxString::FromAscii( gdk_atom_name (GDK_POINTER_TO_ATOM (tmp_list->data)) );
+        wxPrintf( "Atom: %s\n", atom );
+    }
+#endif
+

     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */
     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */

-    drop_target->SetDragContext( context );
+    drop_target->GtkSetDragContext( context );

 
     // GTK+ always supposes that we want to copy the data by default while we
     // might want to move it, so examine not only suggested_action - which is
 
     // GTK+ always supposes that we want to copy the data by default while we
     // might want to move it, so examine not only suggested_action - which is


@@ -206,27 +216,28 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
     if (drop_target->GetDefaultAction() == wxDragNone)
     {
         // use default action set by wxDropSource::DoDragDrop()
     if (drop_target->GetDefaultAction() == wxDragNone)
     {
         // use default action set by wxDropSource::DoDragDrop()

-    if ( (gs_flagsForDrag & wxDrag_DefaultMove) == wxDrag_DefaultMove &&
+        if ( (gs_flagsForDrag & wxDrag_DefaultMove) == wxDrag_DefaultMove &&

             (context->actions & GDK_ACTION_MOVE ) )
             (context->actions & GDK_ACTION_MOVE ) )

-    {
-        // move is requested by the program and allowed by GTK+ - do it, even
-        // though suggested_action may be currently wxDragCopy
-        result = wxDragMove;
-    }
-    else // use whatever GTK+ says we should
-    {
-        result = ConvertFromGTK(context->suggested_action);
-
-        if ( (result == wxDragMove) && !(gs_flagsForDrag & wxDrag_AllowMove) )

         {
         {

-            // we're requested to move but we can't
-            result = wxDragCopy;
+             // move is requested by the program and allowed by GTK+ - do it, even
+            // though suggested_action may be currently wxDragCopy
+            result = wxDragMove;
+        }
+        else // use whatever GTK+ says we should
+        {
+            result = ConvertFromGTK(context->suggested_action);
+
+            if ( (result == wxDragMove) && !(gs_flagsForDrag & wxDrag_AllowMove) )
+            {
+                // we're requested to move but we can't
+                result = wxDragCopy;
+            }

         }
         }

-    }

     }
     else if (drop_target->GetDefaultAction() == wxDragMove &&
                 (context->actions & GDK_ACTION_MOVE))
     {
     }
     else if (drop_target->GetDefaultAction() == wxDragMove &&
                 (context->actions & GDK_ACTION_MOVE))
     {

+

        result = wxDragMove;
     }
     else
        result = wxDragMove;
     }
     else


@@ -265,7 +276,7 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
     }
 
     /* after this, invalidate the drop_target's GdkDragContext */
     }
 
     /* after this, invalidate the drop_target's GdkDragContext */

-    drop_target->SetDragContext( (GdkDragContext*) NULL );
+    drop_target->GtkSetDragContext( NULL );

 
     /* this has to be done because GDK has no "drag_enter" event */
     drop_target->m_firstMotion = false;
 
     /* this has to be done because GDK has no "drag_enter" event */
     drop_target->m_firstMotion = false;


@@ -291,23 +302,21 @@ static gboolean target_drag_drop( GtkWidget *widget,
        the drop, call gtk_drag_finish() with success == FALSE
        otherwise call gtk_drag_data_get()" */
 
        the drop, call gtk_drag_finish() with success == FALSE
        otherwise call gtk_drag_data_get()" */
 

-//    printf( "drop.\n" );
-

     /* this seems to make a difference between not accepting
        due to wrong target area and due to wrong format. let
        us hope that this is not required.. */
 
     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */
     /* this seems to make a difference between not accepting
        due to wrong target area and due to wrong format. let
        us hope that this is not required.. */
 
     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */

-    drop_target->SetDragContext( context );
+    drop_target->GtkSetDragContext( context );

 
     /* inform the wxDropTarget about the current drag widget.
        this is only valid for the duration of this call */
 
     /* inform the wxDropTarget about the current drag widget.
        this is only valid for the duration of this call */

-    drop_target->SetDragWidget( widget );
+    drop_target->GtkSetDragWidget( widget );

 
     /* inform the wxDropTarget about the current drag time.
        this is only valid for the duration of this call */
 
     /* inform the wxDropTarget about the current drag time.
        this is only valid for the duration of this call */

-    drop_target->SetDragTime( time );
+    drop_target->GtkSetDragTime( time );

 
 /*
     wxDragResult result = wxDragMove;
 
 /*
     wxDragResult result = wxDragMove;


@@ -323,9 +332,7 @@ static gboolean target_drag_drop( GtkWidget *widget,
 
     if (!ret)
     {
 
     if (!ret)
     {

-#ifdef __WXDEBUG__

         wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") );
         wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") );

-#endif

 
         /* cancel the whole thing */
         gtk_drag_finish( context,
 
         /* cancel the whole thing */
         gtk_drag_finish( context,


@@ -335,18 +342,16 @@ static gboolean target_drag_drop( GtkWidget *widget,
     }
     else
     {
     }
     else
     {

-#ifdef __WXDEBUG__

         wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned true") );
         wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned true") );

-#endif

 
 #if wxUSE_THREADS
         /* disable GUI threads */
 #endif
 
 
 #if wxUSE_THREADS
         /* disable GUI threads */
 #endif
 

-        GdkAtom format = drop_target->GetMatchingPair();
+        GdkAtom format = drop_target->GtkGetMatchingPair();

 
         // this does happen somehow, see bug 555111
 
         // this does happen somehow, see bug 555111

-        wxCHECK_MSG( format, FALSE, _T("no matching GdkAtom for format?") );
+        wxCHECK_MSG( format, FALSE, wxT("no matching GdkAtom for format?") );

 
 /*
         GdkDragAction action = GDK_ACTION_MOVE;
 
 /*
         GdkDragAction action = GDK_ACTION_MOVE;


@@ -365,10 +370,10 @@ static gboolean target_drag_drop( GtkWidget *widget,
     }
 
     /* after this, invalidate the drop_target's GdkDragContext */
     }
 
     /* after this, invalidate the drop_target's GdkDragContext */

-    drop_target->SetDragContext( (GdkDragContext*) NULL );
+    drop_target->GtkSetDragContext( NULL );

 
     /* after this, invalidate the drop_target's drag widget */
 
     /* after this, invalidate the drop_target's drag widget */

-    drop_target->SetDragWidget( (GtkWidget*) NULL );
+    drop_target->GtkSetDragWidget( NULL );

 
     /* this has to be done because GDK has no "drag_enter" event */
     drop_target->m_firstMotion = true;
 
     /* this has to be done because GDK has no "drag_enter" event */
     drop_target->m_firstMotion = true;


@@ -403,37 +408,31 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
         return;
     }
 
         return;
     }
 

-#ifdef __WXDEBUG__

     wxLogTrace(TRACE_DND, wxT( "Drop target: data received event") );
     wxLogTrace(TRACE_DND, wxT( "Drop target: data received event") );

-#endif

 
     /* inform the wxDropTarget about the current GtkSelectionData.
        this is only valid for the duration of this call */
 
     /* inform the wxDropTarget about the current GtkSelectionData.
        this is only valid for the duration of this call */

-    drop_target->SetDragData( data );
+    drop_target->GtkSetDragData( data );

 
     wxDragResult result = ConvertFromGTK(context->action);
 
     if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) )
     {
 
     wxDragResult result = ConvertFromGTK(context->action);
 
     if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) )
     {

-#ifdef __WXDEBUG__

         wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned true") );
         wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned true") );

-#endif

 
         /* tell GTK that data transfer was successful */
         gtk_drag_finish( context, TRUE, FALSE, time );
     }
     else
     {
 
         /* tell GTK that data transfer was successful */
         gtk_drag_finish( context, TRUE, FALSE, time );
     }
     else
     {

-#ifdef __WXDEBUG__

         wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned FALSE") );
         wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned FALSE") );

-#endif

 
         /* tell GTK that data transfer was not successful */
         gtk_drag_finish( context, FALSE, FALSE, time );
     }
 
     /* after this, invalidate the drop_target's drag data */
 
         /* tell GTK that data transfer was not successful */
         gtk_drag_finish( context, FALSE, FALSE, time );
     }
 
     /* after this, invalidate the drop_target's drag data */

-    drop_target->SetDragData( (GtkSelectionData*) NULL );
+    drop_target->GtkSetDragData( NULL );

 }
 }
 
 }
 }
 


@@ -445,9 +444,9 @@ wxDropTarget::wxDropTarget( wxDataObject *data )
             : wxDropTargetBase( data )
 {
     m_firstMotion = true;
             : wxDropTargetBase( data )
 {
     m_firstMotion = true;

-    m_dragContext = (GdkDragContext*) NULL;
-    m_dragWidget = (GtkWidget*) NULL;
-    m_dragData = (GtkSelectionData*) NULL;
+    m_dragContext = NULL;
+    m_dragWidget = NULL;
+    m_dragData = NULL;

     m_dragTime = 0;
 }
 
     m_dragTime = 0;
 }
 


@@ -457,13 +456,9 @@ wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
 {
     // GetMatchingPair() checks for m_dataObject too, no need to do it here
 
 {
     // GetMatchingPair() checks for m_dataObject too, no need to do it here
 

-    // disable the debug message from GetMatchingPair() - there are too many
-    // of them otherwise
-#ifdef __WXDEBUG__
-    wxLogNull noLog;
-#endif // Debug
-
-    return (GetMatchingPair() != (GdkAtom) 0) ? def : wxDragNone;
+    // disable the trace message from GetMatchingPair() by passing true to it
+    // (there are just too many of them otherwise)
+    return (GtkGetMatchingPair(true) != (GdkAtom) 0) ? def : wxDragNone;

 }
 
 bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
 }
 
 bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )


@@ -471,7 +466,7 @@ bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
     if (!m_dataObject)
         return false;
 
     if (!m_dataObject)
         return false;
 

-    return (GetMatchingPair() != (GdkAtom) 0);
+    return (GtkGetMatchingPair() != (GdkAtom) 0);

 }
 
 wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
 }
 
 wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),


@@ -480,13 +475,19 @@ wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
     if (!m_dataObject)
         return wxDragNone;
 
     if (!m_dataObject)
         return wxDragNone;
 

-    if (GetMatchingPair() == (GdkAtom) 0)
+    if (GtkGetMatchingPair() == (GdkAtom) 0)

         return wxDragNone;
 
     return GetData() ? def : wxDragNone;
 }
 
         return wxDragNone;
 
     return GetData() ? def : wxDragNone;
 }
 

-GdkAtom wxDropTarget::GetMatchingPair()
+
+wxDataFormat wxDropTarget::GetMatchingPair()
+{
+    return wxDataFormat( GtkGetMatchingPair() );
+}
+
+GdkAtom wxDropTarget::GtkGetMatchingPair(bool quiet)

 {
     if (!m_dataObject)
         return (GdkAtom) 0;
 {
     if (!m_dataObject)
         return (GdkAtom) 0;


@@ -500,10 +501,11 @@ GdkAtom wxDropTarget::GetMatchingPair()
         GdkAtom formatAtom = (GdkAtom)(child->data);
         wxDataFormat format( formatAtom );
 
         GdkAtom formatAtom = (GdkAtom)(child->data);
         wxDataFormat format( formatAtom );
 

-#ifdef __WXDEBUG__
-        wxLogTrace(TRACE_DND, wxT("Drop target: drag has format: %s"),
-                   format.GetId().c_str());
-#endif // Debug
+        if ( !quiet )
+        {
+            wxLogTrace(TRACE_DND, wxT("Drop target: drag has format: %s"),
+                       format.GetId().c_str());
+        }

 
         if (m_dataObject->IsSupportedFormat( format ))
             return formatAtom;
 
         if (m_dataObject->IsSupportedFormat( format ))
             return formatAtom;


@@ -532,7 +534,7 @@ bool wxDropTarget::GetData()
     return true;
 }
 
     return true;
 }
 

-void wxDropTarget::UnregisterWidget( GtkWidget *widget )
+void wxDropTarget::GtkUnregisterWidget( GtkWidget *widget )

 {
     wxCHECK_RET( widget != NULL, wxT("unregister widget is NULL") );
 
 {
     wxCHECK_RET( widget != NULL, wxT("unregister widget is NULL") );
 


@@ -548,7 +550,7 @@ void wxDropTarget::UnregisterWidget( GtkWidget *widget )
                                           (gpointer) target_drag_data_received, this);
 }
 
                                           (gpointer) target_drag_data_received, this);
 }
 

-void wxDropTarget::RegisterWidget( GtkWidget *widget )
+void wxDropTarget::GtkRegisterWidget( GtkWidget *widget )

 {
     wxCHECK_RET( widget != NULL, wxT("register widget is NULL") );
 
 {
     wxCHECK_RET( widget != NULL, wxT("register widget is NULL") );
 


@@ -564,7 +566,7 @@ void wxDropTarget::RegisterWidget( GtkWidget *widget )
 
     gtk_drag_dest_set( widget,
                        (GtkDestDefaults) 0,         /* no default behaviour */
 
     gtk_drag_dest_set( widget,
                        (GtkDestDefaults) 0,         /* no default behaviour */

-                       (GtkTargetEntry*) NULL,      /* we don't supply any formats here */
+                       NULL,      /* we don't supply any formats here */

                        0,                           /* number of targets = 0 */
                        (GdkDragAction) 0 );         /* we don't supply any actions here */
 
                        0,                           /* number of targets = 0 */
                        (GdkDragAction) 0 );         /* we don't supply any actions here */
 


@@ -596,10 +598,8 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
 {
     wxDataFormat format( selection_data->target );
 
 {
     wxDataFormat format( selection_data->target );
 

-#ifdef __WXDEBUG__

     wxLogTrace(TRACE_DND, wxT("Drop source: format requested: %s"),
                format.GetId().c_str());
     wxLogTrace(TRACE_DND, wxT("Drop source: format requested: %s"),
                format.GetId().c_str());

-#endif

 
     drop_source->m_retValue = wxDragCancel;
 
 
     drop_source->m_retValue = wxDragCancel;
 


@@ -607,26 +607,20 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
 
     if (!data)
     {
 
     if (!data)
     {

-#ifdef __WXDEBUG__

         wxLogTrace(TRACE_DND, wxT("Drop source: no data object") );
         wxLogTrace(TRACE_DND, wxT("Drop source: no data object") );

-#endif
-       return;
+        return;

     }
 
     if (!data->IsSupportedFormat(format))
     {
     }
 
     if (!data->IsSupportedFormat(format))
     {

-#ifdef __WXDEBUG__

         wxLogTrace(TRACE_DND, wxT("Drop source: unsupported format") );
         wxLogTrace(TRACE_DND, wxT("Drop source: unsupported format") );

-#endif
-       return;
+        return;

     }
 
     if (data->GetDataSize(format) == 0)
     {
     }
 
     if (data->GetDataSize(format) == 0)
     {

-#ifdef __WXDEBUG__

         wxLogTrace(TRACE_DND, wxT("Drop source: empty data") );
         wxLogTrace(TRACE_DND, wxT("Drop source: empty data") );

-#endif
-       return;
+        return;

     }
 
     size_t size = data->GetDataSize(format);
     }
 
     size_t size = data->GetDataSize(format);


@@ -699,7 +693,7 @@ wxDropSource::wxDropSource(wxWindow *win,
 {
     m_waiting = true;
 
 {
     m_waiting = true;
 

-    m_iconWindow = (GtkWidget*) NULL;
+    m_iconWindow = NULL;

 
     m_window = win;
     m_widget = win->m_widget;
 
     m_window = win;
     m_widget = win->m_widget;


@@ -720,7 +714,7 @@ wxDropSource::wxDropSource(wxDataObject& data,
 
     SetData( data );
 
 
     SetData( data );
 

-    m_iconWindow = (GtkWidget*) NULL;
+    m_iconWindow = NULL;

 
     m_window = win;
     m_widget = win->m_widget;
 
     m_window = win;
     m_widget = win->m_widget;


@@ -766,7 +760,7 @@ void wxDropSource::PrepareIcon( int action, GdkDragContext *context )
     if ( icon->GetMask() )
         mask = icon->GetMask()->GetBitmap();
     else
     if ( icon->GetMask() )
         mask = icon->GetMask()->GetBitmap();
     else

-        mask = (GdkBitmap *)NULL;
+        mask = NULL;

 
     GdkPixmap *pixmap = icon->GetPixmap();
 
 
     GdkPixmap *pixmap = icon->GetPixmap();
 


@@ -778,7 +772,7 @@ void wxDropSource::PrepareIcon( int action, GdkDragContext *context )
 
     m_iconWindow = gtk_window_new (GTK_WINDOW_POPUP);
     gtk_widget_set_events (m_iconWindow, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);
 
     m_iconWindow = gtk_window_new (GTK_WINDOW_POPUP);
     gtk_widget_set_events (m_iconWindow, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);

-    gtk_widget_set_app_paintable (GTK_WIDGET (m_iconWindow), TRUE);
+    gtk_widget_set_app_paintable (m_iconWindow, TRUE);

 
     gtk_widget_pop_colormap ();
 
 
     gtk_widget_pop_colormap ();
 


@@ -813,14 +807,12 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
     if (g_lastMouseEvent == NULL)
         return wxDragNone;
 
     if (g_lastMouseEvent == NULL)
         return wxDragNone;
 

-    // disabled for now
-    g_blockEventsOnDrag = true;
-
-    RegisterWindow();
+    GTKConnectDragSignals();
+    wxON_BLOCK_EXIT_OBJ0(*this, wxDropSource::GTKDisconnectDragSignals);

 
     m_waiting = true;
 
 
     m_waiting = true;
 

-    GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 );
+    GtkTargetList *target_list = gtk_target_list_new( NULL, 0 );

 
     wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
     m_data->GetAllFormats( array );
 
     wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
     m_data->GetAllFormats( array );


@@ -828,10 +820,9 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
     for (size_t i = 0; i < count; i++)
     {
         GdkAtom atom = array[i];
     for (size_t i = 0; i < count; i++)
     {
         GdkAtom atom = array[i];

-#ifdef __WXDEBUG__
-        wxLogTrace(TRACE_DND, wxT("Drop source: Supported atom %s"), gdk_atom_name( atom ));
-#endif
-       gtk_target_list_add( target_list, atom, 0, 0 );
+        wxLogTrace(TRACE_DND, wxT("Drop source: Supported atom %s"),
+                   gdk_atom_name( atom ));
+        gtk_target_list_add( target_list, atom, 0, 0 );

     }
     delete[] array;
 
     }
     delete[] array;
 


@@ -850,6 +841,12 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
                 g_lastButtonNumber,  // number of mouse button which started drag
                 (GdkEvent*) g_lastMouseEvent );
 
                 g_lastButtonNumber,  // number of mouse button which started drag
                 (GdkEvent*) g_lastMouseEvent );
 

+    if ( !context )
+    {
+        // this can happen e.g. if gdk_pointer_grab() failed
+        return wxDragError;
+    }
+

     m_dragContext = context;
 
     PrepareIcon( action, context );
     m_dragContext = context;
 
     PrepareIcon( action, context );


@@ -861,16 +858,15 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
     if ( m_retValue == wxDragNone )
          m_retValue = wxDragCancel;
 
     if ( m_retValue == wxDragNone )
          m_retValue = wxDragCancel;
 

-    g_blockEventsOnDrag = false;
-
-    UnregisterWindow();
-

     return m_retValue;
 }
 
     return m_retValue;
 }
 

-void wxDropSource::RegisterWindow()
+void wxDropSource::GTKConnectDragSignals()

 {
 {

-    if (!m_widget) return;
+    if (!m_widget)
+        return;
+
+    g_blockEventsOnDrag = true;

 
     g_signal_connect (m_widget, "drag_data_get",
                       G_CALLBACK (source_drag_data_get), this);
 
     g_signal_connect (m_widget, "drag_data_get",
                       G_CALLBACK (source_drag_data_get), this);


@@ -879,11 +875,13 @@ void wxDropSource::RegisterWindow()
 
 }
 
 
 }
 

-void wxDropSource::UnregisterWindow()
+void wxDropSource::GTKDisconnectDragSignals()

 {
     if (!m_widget)
         return;
 
 {
     if (!m_widget)
         return;
 

+    g_blockEventsOnDrag = false;
+

     g_signal_handlers_disconnect_by_func (m_widget,
                                           (gpointer) source_drag_data_get,
                                           this);
     g_signal_handlers_disconnect_by_func (m_widget,
                                           (gpointer) source_drag_data_get,
                                           this);