Legacy Document

Inside Macintosh: QuickDraw GX Environment and Utilities /

Chapter 4 - QuickDraw GX Debugging / QuickDraw GX Debugging Reference

Functions / Validating Objects

GXValidateTransform

You can use the GXValidateTransform function to check the parameters of a transform object.

void GXValidateTransform(gxTransform target);

target

A reference to a transform object to be validated.

DESCRIPTION

The GXValidateTransform function checks the parameters for the clip, mapping, view port list, hit-test parameters, attributes, owner count, and tag list properties for all transform objects. In addition, this function checks any internal caches built for the transform. If one or more of the parameters are not valid, QuickDraw GX posts a validation error.

This function is not operational in the non-debugging version of QuickDraw GX.

SEE ALSO

QuickDraw GX validation is introduced in the section "Validation Functions" beginning on page 4-6. The use of validation functions is described in the section "Controlling Validation" beginning on page 4-15.