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CallbackForCoreAudioEventsSet method |
  
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CallbackForCoreAudioEventsSet method |
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Remarks
Sets a callback for receiving notification of events generated by CoreAudio devices, allowing to synchronize these devices with the container application.
This method is only intended for usage with Windows Vista and later versions: further information about management of audio devices in Windows Vista and later versions can be found inside the How to access settings of audio devices in Windows Vista and later versions tutorial.
Syntax
[Visual Basic] Public Function CallbackForCoreAudioEventsSet ( function as CallbackForCoreAudioEvents ) as enumErrorCodes |
[C#] public enumErrorCodes CallbackForCoreAudioEventsSet ( CallbackForCoreAudioEvents function ); |
[C++] public: enumErrorCodes CallbackForCoreAudioEventsSet ( CallbackForCoreAudioEvents function ); |
Parameter |
Description |
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function |
Pointer to the callback function that will receive CoreAudio devices related events. Remember that callback functions must be as fast as possible in order to avoid slowing down overall performances. |
when using the API from Unmanaged C++ through COM interaction, where the client application is totally unaware about .NET delegates, you should use the "Ptr" version of the method which allows passing the pointer to the callback function:
[Unmanaged C++] enumErrorCodes CallbackForCoreAudioEventsSetPtr ( (UINT_PTR) functionPointer ); |
Parameter |
Description |
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functionPointer |
Pointer to the callback function. See the Adding the API to an unmanaged Visual C++ project tutorial for details about usage of the "Ptr" version of these methods. |
Return value
Value |
Meaning |
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Negative value |
An error occurred. Check the LastError property value in order to see the last error. |
enumErrorCodes.ERR_NOERROR (0) |
The method call was successful. |
