Users click button controls to initiate actions. You can assign an action to a TButton component by creating an OnClick event handler for it. Double-clicking a button at design time takes you to the button's OnClick event handler in the Code editor.

• Set Cancel to True if you want the button to trigger its OnClick event when the user presses Esc.
• Set Default to True if you want the Enter key to trigger the button's OnClick event.