LabVIEW CLFN Problem:Repeatility

[Bobby_Wong]

Recently I use the LabVIEW's Call Library Function Node to invoke a dll's function.

The prototype of function is:

int videorecvstart(HWND hwnd);int videorecvstop()

It opens a display area on the windows which hwnd pointed and another one close this display area.

And my problem is:

If I start labview and run this VI at the first time it's OK,display area appear and disappear...

but if I run it again there is no action unless I quit labview.

How to modify my code in order to run it continuously without quit labview?

Can some body help me? Thanks!

I have attached my VI and dll.

[Broken_Arrow]

This is your first post, and you attach a 3MB zip fie that calls dll's?

Try to attach the affected portion of your code, in manageable VI's.