public static void FillRectangle(this ID2D1DeviceContext context, D2D_RECT_F rect, ID2D1Brush brush)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (brush == null)
{
throw new ArgumentNullException(nameof(brush));
}
context.FillRectangle(ref rect, brush);
}