NSView to NSImage

FROM : Tristan Jehan
DATE : Sun Jul 16 22:47:04 2006

I'm trying to capture an NSView+descendants into an NSImage using 
something like:

   NSBitmapImageRep *bitmap = [view 
bitmapImageRepForCachingDisplayInRect:[view bounds]];
   [view cacheDisplayInRect:[view bounds] toBitmapImageRep:bitmap];

Problem is: I have the subclass of an NSSlider in that view that does 
not get drawn. The NSSlider subclass uses an NSSliderCell subclass in 
order to draw its own bar and knob... I believe cacheDisplayInRect 
does not call the proper rendering function, but I can't tell... Do I 
need to override a function in NSSlider?

Has anyone experienced something like this? Is there a fix?

Thanks,

Tristan