protected override HandleRef BuildWindowCore(HandleRef hwndParent)
{
HWND_Host = IntPtr.Zero;
HWND_Host = synth.Create("", WsChild | WsVisible, 0, 0, 0, HostWidth, HostHeight, hwndParent.Handle, (IntPtr)HostId);
return(new HandleRef(this, HWND_Host));
}