Using NI-DMM in Visual C++

Using NI-DMM in Visual C++

This topic assumes that you are using the Microsoft Visual C++ ADE to manage your code development and that you are familiar with the ADE.

To develop an NI-DMM application in Visual C++, follow these general steps:

1. Open an existing or new Visual C++ project.
2. Create source files of type .c (C source code) or .cpp (C++ source code) and add them to the project. Make sure that you include the NI-DMM header file, nidmm.h, as follows in your source code files: #include "nidmm.h"
3. Specify the directory that contains the NI-DMM header file under the Preprocessor»Additional include directories settings in your compiler—for Visual C++ 6.0 these files are under Project»Settings»C/C++. You can find the installed location of the NI-DMM header files in the NI-DMM Readme File.
4. Add the NI-DMM import library nidmm.lib to the project under Link»General»Object/Library Modules. You can find the installed location of the NI-DMM import library files in the NI-DMM Readme File.
5. Add NI-DMM function calls to your application.
6. Build your application.

Example Programs

You can find the installed locations of example programs in the NI-DMM Readme File. For additional information regarding NI-DMM examples, refer to Examples.

String Passing

To pass strings, pass a pointer to the first element of the character array. Be sure that the string is null-terminated.

Parameter Passing

By default, C passes parameters by value. Remember to pass pointers to variables when you need to pass by address.