Obtains a handle to the GDevice structure for the main screen.

GDHandle GetMainDevice ();

function result

A handle to the device for the main screen, which is the device containing the menu bar.

DISCUSSION

A handle to the main device is kept in the global variable MainDevice.

All existing GDevice structures are linked together in the device list. After using this function to obtain a handle to the current GDevice structure, your application can use the GetNextDevice function to obtain a handle to the next GDevice structure in the list.

SPECIAL CONSIDERATIONS

The GetMainDevice function may move or purge memory blocks in the application heap; do not call this function at interrupt time.

AVAILABILITY

Supported in Carbon. Available in CarbonLib 1.0 and later when InterfaceLib 7.1 or later is installed. Exported by CarbonLib 1.0 and later and by InterfaceLib 7.1 and later.

© 2000 Apple Computer, Inc. — (Last Updated 4/14/2000)