/**	@file	DkWxProcessingController.h	Prevent concurrent execution of code (i.e. timer event handlers).

	Use as follows:
	@code
	class MyClass
	{
	  DkWxProcessingController	pcTimer;
	};

	void
	MyClass::OnTimer(wxTimerEvent & event)
	{
	  if(pcTimer.canBeginProcessing()) {
	    /* ... do the real processing here ... */
	    pcTimer.endProcessing();
	  }
	}

	@endcode
*/