CFBagGetValueIfPresent |
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Header: | CFBag.h | Carbon status: | Supported | |
Specifies whether a value exists in a CFBag object and, if it does, returns that value indirectly.
Boolean CFBagGetValueIfPresent ( CFBagRef bag, const void *candidate, void **value );
Pass a reference to the CFBag object that you want to obtain the value from.
Pass a pointer to the value that you want to query the CFBag about.
Declare a variable of the type appropriate to the value and pass a pointer to . Upon return the value variable contains a pointer to the value if it exists in the from the CFBag object; otherwise, the function returns NULL.
TRUE if the value is present in the CFBag object, FALSE otherwise.
Supported in Carbon. Available in Carbon 1.0.2 and later.
© 2000 Apple Computer, Inc. (Last Updated 6/30/2000)