void OnSourceProjectLibsChanged(object s, EventArgs a)
{
// If component types have changed in the source project, they must also change
// in this project.
gproject.WidgetLibraries = (ArrayList) sourceProject.WidgetLibraries.Clone ();
gproject.InternalWidgetLibraries = (ArrayList) sourceProject.InternalWidgetLibraries.Clone ();
gproject.NotifyComponentTypesChanged ();
}