Inside Macintosh: Mac OS 8 Toolbox Reference /

Chapter 2 - Control Manager Reference / Control Manager Types and Constants

The Pop-Up Menu Private Structure

NOT RECOMMENDED WITH THE APPEARANCE MANAGER

When the Appearance Manager is available, you should not access the pop-up menu private data structure. Instead, you should pass the value kControlBevelButtonMenuHandleTag in the tagName parameter of GetControlData to get the menu handle of a bevel button, and the menu handle and the menu ID of the menu associated with a pop-up menu.