The Exception class in Delphi 2009 received a number of new features. A number of them are related to getting a stacktrace:
- property StackTrace: string read GetStackTrace;
- property StackInfo: Pointer read FStackInfo;
- class var GetExceptionStackInfoProc: function (P: PExceptionRecord): Pointer;
- class var GetStackInfoStringProc: function (Info: Pointer): string;
- class var CleanUpStackInfoProc: procedure (Info: Pointer);
Has anyone used these to obtain a stack trace yet? Yeah, I know there are other ways to get a stack trace, but if it is supported natively in the Exception class I would rather leverage that.
Update: There is an interest blog post about this. Covers it in a lot of depth.
To me this looks like a framework where you can plug in your own stack tracing. I guess this might be used internally in the IDE with JCLDebug. Perhaps it's intended for users to be able to supply madExcept or another implementation.
No, I haven't used them yet (currently using madExcept for that, and also did some experiments with JclDebug) - but thanks for the tip!
TOndrej is correct. The new features added to Exception class are for third-parties to hook their own stack tracing code into the RTL. The default implementation of the Exception class does not produce its own stack traces.
You would be well advised to look at MadExcept. Not only does it provide excellent handling of any unhandled exceptions (screen grab, email etc) but it has a nice set of callable routines to hand you back a stack trace that you can use almost anywhere.
Bri
