On 5/8/06 11:01 AM, Douglas Norton didst favor us with:
> On 8 May 2006, at 15:49, Norio Ota wrote:
>
>> I am about to attach a menu reference created programmatically to a
>> popup control.
>> Is the menu reference freed when the control is disposed?
>
> yes
>
>> Or do I have to release it by myself?
>
> and yes.
>
>
> MenuRef rMenu = NewMenu(...) // retain count = 1;
>
> SetControlPopupMenuHandle( hControl, rMenu ); // retain count = 2
>
> // don't forget these
> // SetControlMinimum( hControl, 0 );
> // SetControlMaximum( hControl, CountMenuItems( rMenu ) );
>
> ReleaseMenu( rMenu ) // retain count = 1
>
>
> ...
> ...
> ...
> ...
> // later when window / dialog disposed of
>
> // Either
> DisposeWindow( win ); // tears down controls in window
> // or
> DisposeControl( hControl ) // => Control releases menu, retain count
> = 0, menu dies.
>
>
> Hope that helps,
Yes, but now I'm kind of confused. In this post:
http://lists.apple.com/archives/Carbon-development/2001/Jun/msg01512.html
Eric says that "you won't need SetControlPopupMenuHandle if you use
SetControlData with kControlPopupButtonOwnedMenuRefTag. They both do the
same thing."
And I have a note in my own records that says:
"pascal void SetControlPopupMenuHandle( ControlRef control, MenuRef menu )
{
OSStatus error;
error = SetControlData( control, kControlNoPart,
kControlPopupButtonMenuHandleTag, sizeof( menu ), (Ptr)&menu );
check_noerr( error );
}
-eric"
Do kControlPopupButtonMenuHandleTag and kControlPopupButtonOwnedMenuRefTag
do the same thing?
Larry
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