Question

One of my C# Winforms applications randomly displays a ‘pure virtual function call‘ message box. When I click on the ok button of that message box the application immediately shuts down. I cannot find any exception in my application logfiles and the eventlog is empty. Can anybody tell me possible reasons for this crash and how I can further analyse the root cause of the problem? thx

Answer 1

Are you calling an abstract function from a destructor?

Via a certain search engine: http://www.google.com/search?q=pure+virtual+function+call+c%23

Raymond has a pretty detailed response: http://blogs.msdn.com/oldnewthing/archive/2004/04/28/122037.aspx