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Inside Macintosh: Macintosh Toolbox Essentials /

Chapter 5 - Control Manager / Control Manager Reference

Data Structures

The Pop-Up Menu Private Data Record

You can obtain the menu handle and the menu ID of the menu associated with a pop-up menu by dereferencing the contrlData field of the pop-up menu's control record. The contrlData field of a control record is a handle to a block of private information. For pop-up menu controls, this field is a handle to a pop-up private data record, which is a data structure of type popupPrivateData.

TYPE  popupPrivateData = 
      RECORD
         mHandle:    MenuHandle;       {handle to menu record}
         mID:        Integer;          {menu ID}
         mPrivate:   ARRAY[0..0] OF SignedByte; {reserved}
      END;

Field Description

mHandle

Contains a handle to the menu.

mID

The menu ID of the menu.

mPrivate

Reserved.

You can use the standard pop-up control definition function to manage pop-up menus. For information on creating pop-up menus, see "Creating a Pop-Up Menu" beginning on page 5-22. See the chapter "Menu Manager" in this book for additional information.