Copyright © 2011-2018 MultiMedia Soft

CallbackWaveformAnalyzerGraphItemClickSet method

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Sets the function of the CallbackWaveformAnalyzerGraphItemClick callback delegate which notifies about button clicks on graphic items added to the waveform analyzer.


For further details about callback delegates see the How to synchronize the container application with the API tutorial.

For details about the use of the Waveform Analyzer refer to the How to use the Waveform Analyzer section.

For further details about methods of the Waveform Analyzer refer to the WaveformAnalyzer class section.





[Visual Basic]

Public Function CallbackWaveformAnalyzerGraphItemClickSet (

function as CallbackWaveformAnalyzerGraphItemClick

) as enumErrorCodes



public enumErrorCodes CallbackWaveformAnalyzerGraphItemClickSet (

CallbackWaveformAnalyzerGraphItemClick function




public: enumErrorCodes CallbackWaveformAnalyzerGraphItemClickSet (

CallbackWaveformAnalyzerGraphItemClick function









Callback function



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 CallbackWaveformAnalyzerGraphItemClickSetPtr (

(UINT_PTR) 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






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.