Inside Macintosh: QuickDraw GX Printing /

Chapter 3 - Page Formatting and Dialog Box Customization / Page Formatting and Dialog Box Customization Reference

Application-Defined Functions / Message Override Functions for Customizing QuickDraw GX Dialog Boxes

GXFormatDialog

QuickDraw GX sends the gxFormatDialog message when the application calls the GXFormatDialog function to display the Custom Page Setup dialog box. You can install an override function for the gxFormatDialog message to modify the behavior or appearance of the dialog box. Your override function must match the following formal declaration:

OSErr GXFormatDialog (gxFormat aFormat, StringPtr title, 
                      gxDialogResult *aDialogResult);

aFormat

A reference to the format object.

title

The title of the dialog box. If you specify nil as the value of this parameter, the title "Custom Page Setup" is used.

aDialogResult

On return, a pointer to the selection made by the user in the dialog box.

function result

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

DESCRIPTION

QuickDraw GX sends the gxFormatDialog message when the user selects the Custom Page Setup menu item and an application subsequently calls the GXFormatDialog function to display the Custom Page Setup dialog box.

The default implementation of this message adds the standard printing panels and interface and then displays the dialog box.

You usually override this message to customize the dialog box by adding panels using the GXSetupDialogPanel function.

SPECIAL CONSIDERATIONS

You never send the gxFormatDialog message yourself.

You must forward the gxFormatDialog message to other message handlers. Add your panels and then forward the 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.

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