Q I need to add print items to a QuickDraw GX dialog box. In attempting to use Example No. 9 on the MacOS CD, I found what appears to be a bug. This example uses GXGetMessageHandlerResFile() when it calls GXSetupDialogPanel, but it should call CurResFile().
A You are correct. Applications should call CurResFile(). GXGetMessageHandlerResFile() is reserved for extensions and drivers.
For additional code examples that add print items to a QuickDraw GX dialog box, see the WWDC Technology 1995 CD (or the MacOS SDK). The Extension Shell, UserItems, and Additions samples provide the basic shell and item adding/handling code that you require. The path to these samples on the WWDC Technology 1995 CD is:
WWDC Technology 1995: QuickDraw GX: Programming Stuff: Sample Code: Printing Samples: Extensions...)