BlockStudio.CustomControls.MessageBoxEx.CenterWindow C# (CSharp) Method

        private static void CenterWindow(IntPtr hChildWnd)
        {
            Rectangle recChild = new Rectangle(0, 0, 0, 0);
            bool success = GetWindowRect(hChildWnd, ref recChild);

            int width = recChild.Width - recChild.X;
            int height = recChild.Height - recChild.Y;

            Rectangle recParent = new Rectangle(0, 0, 0, 0);
            success = GetWindowRect(_owner.Handle, ref recParent);

            Point ptCenter = new Point(0, 0);
            ptCenter.X = recParent.X + ((recParent.Width - recParent.X) / 2);
            ptCenter.Y = recParent.Y + ((recParent.Height - recParent.Y) / 2);

            Point ptStart = new Point(0, 0);
            ptStart.X = (ptCenter.X - (width / 2));
            ptStart.Y = (ptCenter.Y - (height / 2));

            ptStart.X = (ptStart.X < 0) ? 0 : ptStart.X;
            ptStart.Y = (ptStart.Y < 0) ? 0 : ptStart.Y;

            int result = MoveWindow(hChildWnd, ptStart.X, ptStart.Y, width,
                                    height, false);
        }