namespace NAMESPACE
{
    public static class MyExtensions
    {
        private static ToolTip tooltip = new ToolTip();
        public static void ShowTooltip(this Form frm, String message)
        {
            Point clientMousePosition = frm.PointToClient(Control.MousePosition);

            Int32 tooltipX = clientMousePosition.X + 10;
            Int32 tooltipY = clientMousePosition.Y + 10;

            tooltip.Show(message, frm, tooltipX, tooltipY, 750);
        }
    }
}