Do I need Developer studio (C++ programming language) in my computer when I call a dll through my labview?

Question

Thanks in advance...
Solved!
Go to Solution.

Answer 1

yemin wrote:
    Thank you Rolf and  smercurio_fc 
    My C++ code has many inputs and I am going to get different results ( pressure-temp-friction etc). I am looking at call library function and I couldnt add more than one "return type" . Do I need to name parameters like return type 1, 2, 3 etc... Do you have an idea, how can i get more than one return result? 
A C function can have only one return value. This is a C limitation, not a LabVIEW limitation. What's sometimes done in this case is to have these additional values "returned" as function arguments. You pass in a pointer to a value of the appropriate data type, and the function will write the new value to that memory location. If you don't know what that means, then I'd suggest spending some time with C tutorials.
    Also, when i run my c++ code, I can get all results in a notepad file.... In labview when I run the dll, how can i create that kind of file in the computer to store my run's result?
As noted, you can use Write to Text File. Or, you can use Write Spreadsheet File to create a delimited text file that can be easily imported into a spreadsheet application such as Excel. Or, you can use the Write to Measurement File VI if you want extra formatting at the beginning.
   Thank you again, I am very beginner at Labview.....
We were all beginners at one point. To learn more about LabVIEW it is recommended that you go through the introduction material, tutorial(s), and other material in the NI Developer Zone's Learning Center which provides links to other materials and other tutorials. You can also take the online courses for free.