Carbon


PickerSetPromptProcPtr

Header: ColorPickerComponents.h Carbon status: Supported

Defines a pointer to a color picker-defined prompt setter callback function. Your prompt setter function sets the prompt string used by your color picker.

typedef ComponentResult(* PickerSetPromptProcPtr) (
    SInt32 storage, 
    ConstStr255Param prompt
);

You would declare your function like this if you were to name it MyPickerSetPromptCallback:

ComponentResult MyPickerSetPromptCallback (
    SInt32 storage, 
    ConstStr255Param prompt
);
Parameter descriptions
storage

A handle to your color picker’s global data.

prompt

The new prompt string for your color picker.

function result

Your function should return noErr if successful, or an appropriate result code otherwise.

DISCUSSION

If you create a color picker, it must respond to the kSetPrompt request code, by calling a color picker-defined subroutine (MyPickerSetPromptCallback, for example).

When you create a color picker, the Color Picker Manager uses the Component Manager to request services from your color picker. The code for your color picker should be contained in a resource. The Component Manager expects that the entry point into this resource is a color picker-defined dispatch function. For information on how to create this dispatch function, see the Component Manager callback, ComponentRoutineProcPtr.


© 2000 Apple Computer, Inc. (Last Updated 6/30/2000)