Allows your application to determine whether a component supports a specified request.

SInt32 ComponentFunctionImplemented (
    ComponentInstance ci, 
    SInt16 ftnNumber
);

ci

The component instance of which you wish to make a request. Your application obtains the component instance from the OpenDefaultComponent function or the OpenComponent function. You can use a component identifier here, but you must coerce the data type appropriately.

ftnNumber

A request code value. See the documentation supplied with the component for request code values.

function result

Indicates whether the component supports the specified request. You can interpret this number as if it were a Boolean value. If the returned value is TRUE, the component supports the specified request. If the returned value is FALSE, the component does not support the request. Your application can use this function to determine a component’s capabilities.

AVAILABILITY

Supported in Carbon. Available in CarbonLib 1.0 and later when InterfaceLib 7.1 or later is installed. Exported by CarbonLib 1.0 and later and by InterfaceLib 7.1 and later.

© 2000 Apple Computer, Inc. — (Last Updated 4/6/2000)