Button Messages (Compact 2013)

3/28/2014

The following table shows the button messages, with a description of the purpose of each.

Programming element	Description
BM_CLICK	This message is sent by an application to simulate the user clicking a button.
BM_GETCHECK	This message is sent by an application to retrieve the check state of a radio button or check box.
BM_GETSTATE	This message is sent by an application to determine the state of a button or check box.
BM_SETCHECK	This message is sent by an application to set the check state of a radio button or check box.
BM_SETSTATE	This message is sent by an application to change the highlight state of a button.
BM_SETSTYLE	This message is sent by an application to change the style of a button.
BN_CLICKED	This message is sent when the user taps the pen on the touch screen.
BN_KILLFOCUS	This message is sent when a button loses the keyboard focus.
BN_SETFOCUS	This message is sent when a button receives the keyboard focus.
WM_CTLCOLORBTN	This message is sent to the parent window of a button when the button is about to be drawn.

See Also