AV's on address 00000000 is always happening when your code tries to access an object that has already been destroyed; perhaps you're trying to destroy it again or is your code still processing code (often seen with network sockets), while the class, the code is in, is already freed.
These kinds of debugging can be very tricky sometimes and most of the time it can be solved by simply rearranging the freeing of certain classes or objects. Just follow the destruction of your application with a magnifying glass ;-) Good luck, Peter. -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]]namens Smith David G (Finance) Verzonden: maandag 16 maart 2009 19:25 Aan: [email protected] Onderwerp: RE: [delphi-en] EAccessViolation, read of address 00000000 I think I have seen this when I freed a component on a form. When the form was destroyed it tried to free it again. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, March 16, 2009 11:47 AM To: [email protected] Subject: Re: [delphi-en] EAccessViolation, read of address 00000000 Two suggestions: Brute force: step through finalization using the debugger. I have found one or two that way. Memory leaks: google for memcheck. It has saved me once or twice. The program is attempting to use a nil pointer? > I am really confused on that error message. It keeps showing when I > close the program.When I try running it without the compiler, the app > is still running in task manager consuming around 50% cpu usage even > though I have already close it. I have to end the process with force. > I have already checked the source, I think I have freed everything, I > even use caFree as the Close Action on OnFormClose event. I also > already close any opened file stream on the app. > I don't know what else trigger that error message. Anyone here have > any knowledge of anything else might trigger that error? > > Thanks. > > > [Non-text portions of this message have been removed] > > ------------------------------------ ----------------------------------------------------- Home page: http://groups.yahoo.com/group/delphi-en/ To unsubscribe: [email protected]! Groups Links [Non-text portions of this message have been removed]
