GXJobFormatModeQuery(IM:XP)

Inside Macintosh: QuickDraw GX Printing Extensions and Drivers /

Chapter 4 - Printing Messages / Printing Messages Reference

Printing Messages / Application Messages

GXJobFormatModeQuery
QuickDraw GX sends the GXJobFormatModeQuery message when the application requests or sets format mode information. You can override the GXJobFormatModeQuery message to provide support for direct modes. Your override of the GXJobFormatModeQuery message must match the following formal declaration:
void MyJobFormatModeQuery (gxQueryType aQueryType,
                           void *srcData, void *dstData);
aQueryType
The type of query being performed.
srcData
A pointer to the input data for the query.
dstData
A pointer to the output (result) data for the query.

DESCRIPTION
QuickDraw GX sends the GXJobFormatModeQuery message when an application calls the GXJobFormatModeQuery function to get or set additional format-mode information.
The type of query made by the application is specified in the aQueryType parameter, the possible values of which are listed and described in the "Advanced Printing Features" chapter in Inside Macintosh: QuickDraw GX Printing. Use of the srcData and dstData parameters is described in the same chapter.
You only need to override this message if you support job format modes. Based on the query from the application, you provide the requested information.
The default implementation of the GXJobFormatModeQuery message does nothing.

SPECIAL CONSIDERATIONS
You never send the GXJobFormatModeQuery message yourself.
You must forward the GXJobFormatModeQuery message to other message handlers.

SEE ALSO
You can find an example of an overide of the GXJobFormatModeQuery message in Listing 3-10 on page 3-34 in the chapter "Printer Drivers."
The GXJobFormatModeQuery function, including the types of queries that you can make and the use of the srcData and dstData parameters, is described in Inside Macintosh: QuickDraw GX Printing.