private static NativeMethods.RECT CenterRectOnSingleMonitor(NativeMethods.RECT parentRect, int childWidth, int childHeight) { NativeMethods.RECT parentRect2; NativeMethods.RECT monitorClippingRect; NativeMethods.FindMaximumSingleMonitorRectangle(parentRect, out parentRect2, out monitorClippingRect); return(WindowHelper.CenterInRect(parentRect2, childWidth, childHeight, monitorClippingRect)); }