public GUITabControl AddTabControl(Rect rectangle, GUIElement parent, bool fillBackground, bool hasBorder, int id)
{
IntPtr par = (parent == null ? IntPtr.Zero : parent.Raw);
return (GUITabControl)NativeElement.GetObject(GuiEnv_AddTabControl(_raw, rectangle.ToUnmanaged(), par, fillBackground, hasBorder, id),
typeof(GUITabControl));
}