TB_ISBUTTONCHECKED Overview  Group

The TB_ISBUTTONCHECKED message determines whether the specified button in a toolbar is checked.

TB_ISBUTTONCHECKED 

wParam = (WPARAM) idButton; 

lParam = 0;	 

 

Parameters

idButton

Command identifier of the button.

Return Values

Returns nonzero if the button is checked or zero otherwise.