Dr. Watson Dr. Watson C0000005 access violation Win NT4.0 and LV7.1

[maximint]

Hi together,

I got an error "Dr. Watson C0000005 access violation" after closing my LV application.

LV 7.1 and Windows NT 4.0 SP6a .

 Dr Watson

Does anybody has an idea?

Thanks.

[maximint]

I tried also with update to LV 7.1.1. ,   without success.

[maximint]

Ich got this error message after disabling Dr Watson.

Error Message

May be this is a LV 7.1 bug?

[smercurio_fc]

What makes you think it's a LabVIEW bug? I'd be more inclined to think it's something within your code. Are you accessing hardware? Are you calling DLLs? Without knowing what your program is doing, you can't say one way or the other.

[maximint]

Hi,

I don't use hardware and no dll is called. I can focus then problem on a part of the program which handles a Systray Icon.

http://home.arcor.de/raena2/LabVIEW_Tray_Icon.llb

So just using the sample in this llb shows the probelm when closing the application.

[maximint]

strange thing: if I insert a waiting time between closing the systray icon and exiting the program,

no Dr. Watson and no error message comes up.

Does anybody has an idea what the reason could be for this behavior?

[chrisger]

Hi there

add a Destroy user event" after the unregister event function for each user event in your code.

You are calling external code (axsTrayIcon.ITrayIcon COM-Object), this code may cause the problem.

[maximint]

Thanks chrisger, but this doesn't help. Same Error Message.

Any other suggestions?

destroy

Message Edited by maximint on 12-12-2008 08:32 AM

[smercurio_fc]

The way you've wired that it won't do anything. UsrEvtRef is only valid inside the event case. When you tunnel it out it like that its value is lost, and is therefore meaningless. I suspect your problem has to do with those external calls that you're making with the systray. Those VIs call Windows DLLs. Why don't you try removing them and see what happens?

[chrisger]

This is wrong. The tunnel of the user event through the event structure is filled with data only in the UserEvent event case,  but this case will not stop the while loop, so the tunnel through the while loop is always NULL.

Pass ALL user events created inside "Register Tray Icons Events.vi" to the outside and destroy them after the destroy event registration.