I am trying to create a GUI interface to multiple software systems running on a windows 7 machine. The objective is to have one LabView user interface that can control three different non LabView software systems running in the background. Two of the programs have .dll files. My goal was to use .dll files to interact with features of the non LabView software. I have tried to bring one of the .dll files into labview but it was not successful.
What do I need to ask for from the other software vendors that would allow me to access the .dll files? Does it require a header file? Do they have to give me permission to access features of the .dll?