Mouse Utilities

public static class MouseUtilities
    {
        // import the necessary API function so .NET can
        // marshall parameters appropriately
        [DllImport("user32.dll")]
        static extern void mouse_event(int dwFlags, int dx, int dy, int dwData, int dwExtraInfo);

        // constants for the mouse_input() API function
        private const int MOUSEEVENTF_MOVE = 0x0001;
        private const int MOUSEEVENTF_ABSOLUTE = 0x8000;

        // simulates movement of the mouse. parameters specify changes
        // in relative position. positive values indicate movement
        // right or down
        public static void Move(int xDelta, int yDelta)
        {
            mouse_event(MOUSEEVENTF_MOVE, xDelta, yDelta, 0, 0);
        }

        // simulates movement of the mouse. parameters specify an
        // absolute location, with the top left corner being the
        // origin
        public static void MoveTo(int x, int y)
        {
            mouse_event(MOUSEEVENTF_ABSOLUTE | MOUSEEVENTF_MOVE, x, y, 0, 0);
        }
    }