Inside Macintosh: QuickDraw GX Printing Extensions and Drivers /

Chapter 4 - Printing Messages / Printing Messages Reference

Printing Messages / Compatibility Messages

GXPrintDefault

QuickDraw GX sends the GXPrintDefault message when an application that supports the Macintosh Printing Manager calls the PrintDefault function. You can override the GXPrintDefault message to customize the handling of the PrintDefault function. Your override of the GXPrintDefault message must match the following formal declaration:

OSErr MyPrintDefault (THPrint aTHPrint);

aTHPrint

A handle to the print record for this printing operation.

function result

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

DESCRIPTION

The default implementation of this message loads a default 'PREC' resource. You can override this message to add any special handling of the default print record.

SPECIAL CONSIDERATIONS

You never send the GXPrintDefault message yourself.

You almost always forward the GXPrintDefault message so that the default implementation can perform its operations.

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.

SEE ALSO

The PrintDefault function is described in Inside Macintosh: Imaging With QuickDraw.

The 'PREC' resource is described on page 6-51 in the chapter "Printing Resources" in this book.

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