TB_PRESSBUTTON  D0OP3U 

The TB_PRESSBUTTON message presses or releases the specified button in a toolbar.

TB_PRESSBUTTON

wParam = (WPARAM) idButton;

lParam = (LPARAM) MAKELONG(fPress, 0);

Parameters

idButton

Command identifier of the button to press or release.

fPress

Press flag. If this parameter is TRUE, the button is pressed. If it is FALSE, the button is released.

Return Values

Returns TRUE if successful or FALSE otherwise.