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Overview
This VI uses DLL files developed in C to sort a numerical array
Description
This example demonstrates that LabVIEW users can use code developed in an external development environment, including C++. The LabVIEW program below generates and sorts a numerical array by calling a C-built DLL via LabVIEW's Call Library Function Node. This example also contains the C source code that the DLL was built from. It contains a .c file and a .prj file that can be built in LabWindows/CVI, as well as a .cpp file and all of the project files necessary to build this in Microsoft Visual C++. If you see a broken arrow when you open the LabVIEW VI, double-click on the Call Library Function Node and relink to the exact path of the DLL.
Any C compiler can you be used to view and execute the C code. If you do not have a C compiler, you can download the LabWindows/CVI Evaluation Software to run the C code and to try the premium C environment for measurement and automation applications. At a minimum, the LabWindows/CVI Run Time Engine is required to run the CVI executable.
Requirements
LabVIEW 2012 or compatible
Any C compiler
Steps to Implement or Execute Code
Additional Information or References
VI Block Diagram
**This document has been updated to meet the current required format for the NI Code Exchange. **
Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.
Excellent, Justin. I have a question regarding the performance of the Call Library Node - do you know if you incur any kind of penalty on performance for calling this node? That is, would a VI that runs at the same rate as the C code run at the same rate when called using the Call Library Node or might it run slower? Should we expect the C code called with this node to run at the same rate as it would if called using standard IO? (This question is related to a post I put up recently)
Also, not to steal NI's thunder , but I believe that Netbeans has a free IDE in which one might view and develop C++ and it seems that Microsoft has recently made their Visual C++ Express Edition available as well.