This subclass of NSImageRep allows you to create images from custom drawing code. For example, one might implement a subclass of NSCustomImageRep to draw a complicated Bezier path as the image represented by the particular object. This permits shapes to be drawn in contexts that use images instead of views.

@interface NSCustomImageRep : NSImageRep
// Initializers
- (id)initWithDrawSelector:(SEL)aMethod delegate:(id)anObject;
// Instance Methods
- (id)delegate;
- (SEL)drawSelector;