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Using Windows DLL

by:
‎09-24-2012 03:35 PM
Last Edited by: Member migration-bot ‎08-31-2023 04:11 PM

Products and Environment

This section reflects the products and operating system used to create the example.

To download NI software, including the products shown below, visit ni.com/downloads.

    Software

  • LabVIEW

Code and Documents

Attachment

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Description

Overview:

This example calles Windows DLL's to get the currently logged in user's name. and highlights how to call a DLL from LabVIEW and select the appropriate

LabVIEW datatypes.

 

Description:

In LabVIEW you can call DLL's by using a Call Library Function Node.  Once you drop the VI onto your block diagram, you need to double click it to configure it to run the above function. 

 

Requirements:

  • LabVIEW 2012 (or compatible)

 
Steps to Implement or Execute Code

  1.  Run the vi. 

 

Additional Information or References

LabVIEW handles strings differently than C/C++, and so special care must be taken when working with strings, otherwise your LabVIEW code WILL crash due to memory management problems.  The following exerpt is from the article: "Using Arrays and String in the Call Library Function Node".

Configuring the Call Library Function Node

 

Front Panel

 FP.PNG

VI Snippet

BD.png

 

 **This document has been updated to meet the current required format for the NI Code Exchange.**

 

Systems Engineer
SISU

Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.