General Protection fault.

[Dwivedi]

Problem happens when a uir panel that has an active x control on it and a mouse pointer is placed on this panel. I get a General protection fault. When contiue is select the RunUserInterface() function call is highlited.

[ryank]

Does this happen with any ActiveX control or only a specific one? You might try something simple like CW3DGraph, or Media Player to see whether it is a problem with your ActiveX control.

Ryan K.
National Instruments

[Dwivedi]

Ryan:

It happens with other ActiveX controls too. I suspect that there is some kind of system event fired that clashes with the mouse co-ordinates, somehow, somewhere.
Any suggestions?

Dwivedi

[ryank]

Dwivedi,
What version of CVI and of Windows are you using?

[Dwivedi]

CVI version 6.0 on Windows-2000.

[ryank]

Should be no problem with it, there was an issue with the mouse and the ActiveX container when it was first put in, but it was fixed before CVI 6 was released, so unless you have a beta version it shouldn't apply to you. It would be a good idea to double check by just creating a user interface with a Windows Media Player activeX control, generating the code and making sure that your problem still shows up. If it does you most likely have either a bad windows install or a bad CVI install, you might want to try checking your control in excel to see if it works there, the following document describes how:
http://digital.ni.com/public.nsf/websearch/D0B5CCE7E4899F8886256B7E0001609B?OpenDocument

If it works in Excel then you might want
to try reinstalling CVI.