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Cogl 2.0 Reference Manual | ![]() |
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NULL is ok, both for passing and for returning.
The callback is valid only during the call to the method.
Parameter for input and for returning results. Default is transfer full.
Parameter points to an array of items.
Parameter for input. Default is transfer none.
Out parameter, where caller must allocate storage.
Free data after the code is done.
Parameter for returning results. Default is transfer full.
This parameter is a 'user_data', for callbacks; many bindings can pass NULL here.
Don't free data after the code is done.
The callback is valid until the GDestroyNotify argument is called.