Remember that if you need help to determine how to use a particular control or method in PowerCOBOL, have a look through the on-line help system and the included sample application projects that come with PowerCOBOL.
These samples should have been installed in the \Fujitsu NetCOBOL for Windows\COBOL\SAMPLES\PowerCOBOL folder on your system.
You should find these samples to be ready to build. You can load them into PowerCOBOL and examine them in detail.