I am currently trying to subclass NSPopUpButton while keeping
compatibility
with Mac OS 10.4 in order to add the possibility of choosing the
color of
the highlight when the mouse is placed over the button, including
gradient
fills. The problem is that neither NSPopUpButton or
NSPopUpButtonCell seem
to provide public methods to draw the border of the button or the
image with
the arrows. Only the title of the button can be drawed using a public
method while handling the rest of the drawing in a subclass.
NSPopupButtonCell is a subclass of NSMenuItemCell, which is itself a
subclass of NSButtonCell. This means that it inherits all the methods
of those classes. Have a look at:
