How do I set the text color of a Cocoa tooltip?

Question

I am using BGHUDAppKit for an outline view within a HUD-style (black) NSPanel. As such the text in my outline view cells is light gray or white. Unfortunately this means that when I hover to bring up a tooltip for a cell's value, it shows up as light gray text on yellow, which is illegible.

How can I set the text color for the tooltip, or is there a way that I can modify the control itself (without changing its appearance) to work better with the tooltip mechanism?

Answer 1

You can override - (void)drawWithExpansionFrame:(NSRect)cellFrame inView:(NSView *)view in a NSCell subclass to draw whatever you want in the (tool tip) expansion frame.