The TB_SETSTATE message sets the state for the specified button in a toolbar.
TB_SETSTATE
wParam = (WPARAM) idButton;
lParam = (LPARAM) MAKELONG(fState, 0);
Parameters
idButton
Command identifier of the button.
fState
State flags. This parameter can be a combination of the values listed in Toolbar Button States.
Return Values
Returns TRUE if successful or FALSE otherwise.