Inside Macintosh: QuickDraw GX Printing Extensions and Drivers /

Chapter 4 - Printing Messages / Printing Messages Reference

Printing Messages / PostScript Imaging Messages

GXPostScriptExitServer

QuickDraw GX sends the GXPostScriptExitServer message when the printer
needs to be restarted. You can override the GXPostScriptExitServer message to change the code used to exit the server loop in the printer. Your override of the GXPostScriptExitServer message must match the following formal declaration:

OSErr MyPostScriptExitServer (void);

function result

An error code. The value noErr indicates that the operation was successful.

DESCRIPTION

QuickDraw GX's default implementation of the GXPostScriptQueryPrinter message sends the GXPostScriptExitServer message when a device requires restarting. This message allows you to modify the permanent state of a printer.

When you exit the server loop, you can make changes that persist after the loop is reentered, such as changing the password. You must send an end-of-file (EOF) to the printer to reenter the server loop.

The default implementation of this message sends the following PostScript code:

serverdict begin 000000 exitserver

The 000000 value in this code is the default password for the printer.

SPECIAL CONSIDERATIONS

You can either partially or totally override the GXPostScriptExit Server message. If you override this message because the password has been changed, you must totally override it.

RESULT CODES

gxSegmentLoadFailedErr	A required code segment could not be found, or there was not enough memory to load it.
gxPrUserAbortErr	The user has canceled printing.

The default implementation of the GXPostScriptExitServer message can also return the communications errors that are listed in Table 4-2 on page 4-42.

SEE ALSO

The GXPostScriptQueryPrinter message is described on page 4-101.

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