TB_GETSTATE  1.PLHCI 

The TB_GETSTATE message retrieves information about the state of the specified button in a toolbar, such as whether it is enabled, pressed, or checked.

TB_GETSTATE

wParam = (WPARAM) idButton;

lParam = 0;

Parameters

idButton

Command identifier of the button for which to retrieve information.

Return Values

Returns the button state information if successful or  - 1 otherwise. The button state information can be a combination of the values listed in Button States28HPSO.