Assigning a Menu to a Tool Button

If you are using a toolbar (TToolBar) with tool buttons (TToolButton), you can associate menu with a specific button:

To assign a menu to a tool button

Select the tool button.
In the Object Inspector, assign a pop-up menu (TPopupMenu) to the tool button's DropDownMenu property.

If the menu's AutoPopup property is set to True, it will appear automatically when the button is pressed.