NI IMAQ Vision C API Documentation

Updated May 15, 2023

Reported In


  • LabWindows/CVI
  • Vision Development Module


  • NI-IMAQdx

Programming Language

  • C
  • C++

Issue Details

I am using the NI Vision Development Module to develop my NI Vision application in C. Where can I find documentation on the image processing and NI IMAQ functions? 


If you're working in the LabWindows/CVI environment, you can open the Function Panel for the function you would like more information about. In the Function Panel, you can right click the empty space to get a description of the function. When you right click on a parameter in the Function Panel, it will give you a description of the parameter. 

If you are not in the LabWindows/CVI environment, you can access the NI Vision C Support Help in the following location: 
<National Instruments>\Vision\Help\NIVisionCSupport.chm 

Additional Information

The NI Vision C Support help documentation has an alphabetical list of the functions that you can use to browse for a specific function if you are unsure what category your function should be listed under in the NI Vision Library Function Tree.