Re: background of NSButton and NSPopUpButton

FROM : Michael Becker
DATE : Thu Nov 25 12:00:29 2004

Hi!

Am 25.11.2004 um 11:20 schrieb Don Willems:
> Now I'm thinking of subclassing NSButtonCell and NSPopUpButtonCell,
> but I'm not sure how to go about that.


Just subclass e.g. NSPopUpButton. This is itself an NSView-subclass, so
you can just override drawRect: like this:

- (void)drawRect:(NSRect)cellFrame {
   // Creating a red background
   [[ NSColor redColor] set];
   NSRectFill([self bounds]);
   
   [[ self cell] drawWithFrame:cellFrame inView:self];
}

The call to drawWithFrame:inView: will draw the PopUpButton. If you
want it to look like in the "bar" in Xcode, set the PopUpButton to be
not bordered.
Personally, though, I would go with your first idea (creating a
background view and placing non-bordered buttons on it) because this
way you can be sure that there are no graphical differences between
your button's background and the rest.

Cheers,
Michael