DLL Cannot be Read into LabVIEW Using Import Shared Library Wizard

Updated Aug 31, 2023

Reported In

Software

  • LabVIEW

Issue Details

I have a DLL library from some third party company (camera, CAN/LIN protocols, etc.). I want to import it using Import Shared Library Wizard, but when I do, I get the message that some functions are not found and not recognized in the header file: 

Solution

If the definitions of the functions, which are listed as 'not found', do actually exist in the header file, they are not recognized probably because of the usage of complex structs datatypes in the prototypes of the functions. 

Generally in this situation, you would have to manually create the wrappers for these functions using Call Library Function Nodes .VI. Go through the Tutorial: Configuring the Call Library Function Node to call a Simple DLL and reference the Configuring the Call Library Function Node (LabVIEW Help) documentation for information on how to do this.

If you need access to functions which are not implemented in the header file, you would have to contact the provider of the DLL library to determine the prototype of the functions.

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