diff --git a/src/gtk/combobox.cpp b/src/gtk/combobox.cpp
index 3542a670b4..976e127c42 100644
--- a/src/gtk/combobox.cpp
+++ b/src/gtk/combobox.cpp
@@ -647,7 +647,24 @@ void wxComboBox::OnChar( wxKeyEvent &event )
         event.SetString( GetValue() );
         event.SetInt( GetSelection() );
         event.SetEventObject( this );
-        GetEventHandler()->ProcessEvent( event );
+
+        if (!GetEventHandler()->ProcessEvent( event ))
+        {
+            // This will invoke the dialog default action, such
+            // as the clicking the default button.
+
+            wxWindow *top_frame = m_parent;
+            while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
+                top_frame = top_frame->GetParent();
+
+            if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
+            {
+                GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
+
+                if (window->default_widget)
+                    gtk_widget_activate (window->default_widget);
+            }
+        }
             
         // Catch GTK event so that GTK doesn't open the drop
         // down list upon RETURN.
diff --git a/src/gtk/cursor.cpp b/src/gtk/cursor.cpp
index dc03ce10db..a7ce14cfb5 100644
--- a/src/gtk/cursor.cpp
+++ b/src/gtk/cursor.cpp
@@ -370,7 +370,7 @@ void wxBeginBusyCursor( wxCursor *WXUNUSED(cursor) )
     wxSetCursor( wxCursor(wxCURSOR_WATCH) );
 
     if (wxTheApp)
-        wxTheApp->SendIdleEvents();
+        wxTheApp->ProcessIdle();
 
     gdk_flush();
 }
diff --git a/src/gtk1/combobox.cpp b/src/gtk1/combobox.cpp
index 3542a670b4..976e127c42 100644
--- a/src/gtk1/combobox.cpp
+++ b/src/gtk1/combobox.cpp
@@ -647,7 +647,24 @@ void wxComboBox::OnChar( wxKeyEvent &event )
         event.SetString( GetValue() );
         event.SetInt( GetSelection() );
         event.SetEventObject( this );
-        GetEventHandler()->ProcessEvent( event );
+
+        if (!GetEventHandler()->ProcessEvent( event ))
+        {
+            // This will invoke the dialog default action, such
+            // as the clicking the default button.
+
+            wxWindow *top_frame = m_parent;
+            while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
+                top_frame = top_frame->GetParent();
+
+            if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
+            {
+                GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
+
+                if (window->default_widget)
+                    gtk_widget_activate (window->default_widget);
+            }
+        }
             
         // Catch GTK event so that GTK doesn't open the drop
         // down list upon RETURN.
diff --git a/src/gtk1/cursor.cpp b/src/gtk1/cursor.cpp
index dc03ce10db..a7ce14cfb5 100644
--- a/src/gtk1/cursor.cpp
+++ b/src/gtk1/cursor.cpp
@@ -370,7 +370,7 @@ void wxBeginBusyCursor( wxCursor *WXUNUSED(cursor) )
     wxSetCursor( wxCursor(wxCURSOR_WATCH) );
 
     if (wxTheApp)
-        wxTheApp->SendIdleEvents();
+        wxTheApp->ProcessIdle();
 
     gdk_flush();
 }