Inside Macintosh: QuickDraw GX Printing Extensions and Drivers /

Chapter 4 - Printing Messages / Printing Messages Reference

Printing Messages / Print Object Messages

GXDefaultFormat

QuickDraw GX sends the GXDefaultFormat message when an application creates a new format object. You can override the GXDefaultFormat message to modify or add to the contents of a newly created format object. Your override of the GXDefaultFormat message must match the following formal declaration:

OSErr MyDefaultFormat (gxFormat aFormat);

aFormat

The format object.

function result

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

DESCRIPTION

QuickDraw GX sends the GXDefaultFormat message when an application calls the GXNewFormat function to create a new format.

You override this message if you need to add additional data to the format object when
it is created. After you forward this message down the message chain, you can add your own information to the format object or change information that was placed there by the default implementation. The default implementation of this message provides the default information for this format object.

SPECIAL CONSIDERATIONS

You never send the GXDefaultFormat message yourself.

You must forward the GXDefaultFormat message to other message handlers. Always forward it before you add or change format information.

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 GXNewFormat function is described in Inside Macintosh: QuickDraw GX Printing.

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