/// <summary>
/// Performs some housekeeping then passes control to the user-supplied handler.
/// </summary>
/// <param name="windowId"></param>
void DoSubwindow(int windowId)
{
SubWindow window = GetSubwindowFromId(windowId);
if (window.HandleUpdate != null)
{
window.HandleUpdate(windowId);
}
//for some insane reason we *have* to call this or all clicks
//will leak onto controls behind this window. Fixed and Popup windows
//will ignore the repositioning though.
GUI.DragWindow();
}