Override flexButtonCallbackHandler() or buttonCallbackHandler()

[PFlor.2]

I have several flex and nonflex buttons on a screen and wanted to be able to call a beeper function with any button press.  So I thought I could override the callback handler for button and flexButton to do this.  Is this not possible since they are private in the base class?  I'm used to C and not very familiar with C++ classes and inheritance.

[MM..1]

If your design is based on touch only try implement beeper in touch handler. 

Other workaround is create thread for beeper and on every callback send to queue message beep...