The ToolTip property is used to flash a message regarding a control object when the mouse pointer moves over that object for a couple of seconds. Pick a control and click the F4 key to navigate to the property window of that control. To set the tooltip move down to ToolTips property and double click in the space to the right of the ToolTips property. Then type the message without the quotation marks. Execute your program by using the F5 or use the Run option in the menu. Now place the mouse over the control for which you have to set the tooltip and the tooltip message would be flashed. The Tooltips are used to specify for what purpose the control is used.