@param newmsg if used, new message to display
@returns true if ABORT button has not been pressed
*/
- bool Update(int value, const wxString& newmsg = wxT(""));
+ virtual bool Update(int value, const wxString& newmsg = wxT(""));
/* Can be called to continue after the cancel button has been pressed, but
the program decided to continue the operation (e.g., user didn't