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CallbackMidiKeyboardNotificationSet method |
  
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CallbackMidiKeyboardNotificationSet method |
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Remarks
Sets the function of the CallbackMidiKeyboardNotification callback delegate which notifies when one of the keys on the virtual piano keyboard is pressed or released.
For further details about callback delegates see the How to synchronize the container application with the API tutorial.
For further details about the use of the virtual MIDI keyboard see the ClassMidiVirtualKeyboard class section and the How to manage the virtual MIDI piano keyboard tutorial.
Syntax
[Visual Basic] Public Function CallbackMidiKeyboardNotificationSet ( function as CallbackMidiKeyboardNotification, nUserData as Int32 ) as enumErrorCodes |
[C#] public enumErrorCodes CallbackMidiKeyboardNotificationSet ( CallbackMidiKeyboardNotification function, Int32 nUserData ); |
[C++] public: enumErrorCodes CallbackMidiKeyboardNotificationSet ( CallbackMidiKeyboardNotification function, Int32 nUserData ); |
Parameter |
Description |
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function |
Callback function |
nUserData |
User instance data to pass to the callback function |
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. |
enumDjcErrorCodes.ERR_DJC_NOERROR (0) |
The method call was successful. |
