Help for DeclareThreadSafeScalarVar

I have problems using DeclareThreadSafeScalarView. In my header file, I have the following:

DeclareThreadSafeScalarVar (int, RunUserInterface);

I have two source files different procedures I refrence the variable 'RunUserInterface. In a single file where my

thread is created, first of all, I make a call to 'InitializeRunUserInterface()' and ' SetRunUserInterface (0) ' in a procedure and in

another procedure in this file, I call "GetRunUserInterface()". In the second source file, I call "SetRunUserInterface (1).

The two files compile ok, but when the executable in CVI binding takes place, I get link errors saying there are cases

of "Undefined symbol" for each of the calls. I looked through the help of CVI screens and do not see what I

can hurt. Can anyone answer why I have these errors of link?

I just happen to google and find another forum on the use of DeclareThreadSafeScalarVar and ran into my problem. The NOR

manuals did not mention the use of the present with the DefineThreadSafeScalarVar statement. I made an assumption that if I made a

then I was covered. I didn't know that the two statements must be used together. The statement declared in the include file

and the declaration defined in the source file where the InitializeVar is used. I put set it in my source and built my executable

without any error link. Thanks for your previous answer.

Tags: NI Software

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