This example is designed to illustrate the concept of using external code in LabVIEW. Specifically, this example demonstrates that LabVIEW allows a developer to use the code developed external to LabVIEW. This example contains a LabVIEW program that generates and sorts an array of numbers by calling a C-built DLL using 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 build 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 is required 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.