PInvoke Example

See the Pinvoke example, which is with the examples under the Samples folder. See Start menu > All Programs > Micro Focus Visual COBOL 2010 > Visual COBOL Samples.This example contains the following of interest:

• Pinvoke.cbl. This program is managed COBOL. It uses the standard COBOL CALL statement to call the sub program and to send it the message buffer to display.
• sub.dll. This program is existing unmanaged COBOL.

  Notice that the built sub.dll is included as a reference in the project, whereas the source file sub.cbl is not included, because it is unmanaged code and not compiled as part of the project. You can view the source file by opening it from the File menu.

To run the example:

1. Build the solution by clicking Build > Build pinvoke.
2. Step through the program, using Debug > Step into.