protected override void OnResize(EventArgs e)
{
OffscreenBuffer.TryReAllocateOffsceenBuffer();
base.OnResize(e);
if (BackgroundIImage != null)
{
BackgroundIImage = BackgroundIImage;
}
if (Canvas.Children.Count == 0)
{
return;
}
// resize is called whenever the control is moved or resized
Size size = Size;
if (size == _oldViewSize)
{
// the control was moved
// this should mean that it was repositioned by the host
// if the control has transparencies, invalidate it.
//if (BackColor == Color.Transparent)
// Canvas.inva Invalidate();
}
else
{
_oldViewSize = size;
// the control was resized for whatever reason
// we must repaint everything.
//sInvalidate();
}
}
private static void TryReAllocateOffsceenBuffer()
{
OffscreenBuffer.TryReAllocateOffsceenBuffer(ref _offScreenBmp, ref _offScreenGraphics, Screen.PrimaryScreen.WorkingArea.Width, Screen.PrimaryScreen.WorkingArea.Height);
}