GXPrintingDispatch(IM:XP)

Inside Macintosh: QuickDraw GX Printing Extensions and Drivers /

Chapter 5 - Printing Functions for Message Overrides / Printing Functions Reference

Functions / Segmenting Message Override Code

GXPrintingDispatch
You can use the GXPrintingDispatch function to make calls across segment boundaries.
OSErr GXPrintingDispatch (long selector, ...);
selector
The selector for the printing message that you want to dispatch.
...
The parameters that the message expects.

DESCRIPTION
The GXPrintingDispatch function calls a function that is located in a different code segment. You need to do this if the code to implement a single message override is too large to fit into one segment. This function uses the same information as does the PRINTINGDISPATCH macro, which provides a simpler technique for calling across segment boundaries. To use the GXPrintingDispatch function, you construct your own selector, as described on page 5-12, and use it as a parameter to the function.

SEE ALSO
An example of using the GXPrintingDispatch function is shown on page 5-12.
The PRINTINGDISPATCH macro method of calling across segments is described in the section "Segmenting Your Driver Code" beginning on page 5-12.