Inside Macintosh: QuickDraw GX Printing Extensions and Drivers /

Chapter 4 - Printing Messages / Printing Messages Reference

Printing Messages / PostScript Imaging Messages

GXPostScriptStreamFont

QuickDraw GX sends the GXPostScriptStreamFont message when the imaging system determines that a font is needed to print a document. You can override the GXPostScriptStreamFont message to provide font management on a remote host. Your override of the PostScriptStreamFont message must match the following formal declaration:

OSErr MyPostScriptStreamFont (gxFont fontRef,
                              gxScalerStream *stream);

fontRef

A reference to the font to be streamed.

stream

A pointer to the gxScalerStream structure that specifies how to stream the font to the printer.

function result

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

DESCRIPTION

The default implementation of the GXPostScriptStreamFont message streams the specified font to the printer. You can override this message to determine when a font is being downloaded or to change the streaming method used to send the font to the printer.

SPECIAL CONSIDERATIONS

You must forward the GXPostScriptStreamFont message.

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 GXPostScriptStreamFont message can also return the communications errors that are listed in Table 4-2 on page 4-42.

SEE ALSO

The gxScalerStream structure is described in Inside Macintosh: QuickDraw GX Environment and Utilities.

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