dll function not found

[Pierre_a]

Hello,
I have an USB dll (COM interface) supplied by USBIO. When I try to call a function from LABView with a "Call Library Function Node", it successes in finding the function prototype. But when I run the VI, it say : "function not found in library"
What is the problem ?
Thank you very much.

[waldemar.hersacher]

Hi Pierre,

the only way I get this error is that after I have choosen the function from the menu ring I changed the name in the control of the configure dialog. May you have done this accidentily.

Waldemar

[Pierre_a]

The function is NOT present in the menu ring. There are only 4 functions that are normally not included in the USB dll :
- DllCanUnloadNow
- DllGetClassObject
- DllRegisterServer
- DllUnregisterServer
I don't know what are these functions.
When I enter manually another function (that is documented in the dll manual), LABView changed the function prototype (parameters) correctly. But the run arrow is still broken, because of "function not found in the dll"...
Can anyone help me ?

[JRA]

Here is a link to a Knowledge Base on NI's website which list a number of reasons why this error might occur. I would suggest taking a look at it and trying their fixes.