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Mac OS 8 Control Manager Reference

Radio Button Value Constants

These constants specify the value of a standard radio button control and are passed in the newValue parameter of SetControlValue and are returned by GetControlValue . The radio button value constants are changed with Appearance Manager 1.0 to support mixed-value radio buttons.

enum {
    kControlRadioButtonUncheckedValue   = 0,
    kControlRadioButtonCheckedValue     = 1,
    kControlRadioButtonMixedValue       = 2
};

Constant descriptions

kControlRadioButtonUncheckedValue
The radio button is unselected.
kControlRadioButtonCheckedValue
The radio button is selected.
kControlRadioButtonMixedValue
Mixed value. Indicates that a setting is on for some elements in a selection and off for others. This state only applies to standard Appearance-compliant radio buttons.
© 1998 Apple Computer, Inc. – (Last Updated 19 Nov 98)

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