Hi,
If you are developing for MS Windows, why not just use the MS View List ActiveX component? I have included an example, of how to use it. For more info look at the LabView ActiveX examples, and look at
Microsoft's documentation. Note that the documentation is not specific to the ActiveX interface so there may be some differences.
If platform independence is an issue, you might try emulating it with a table control instead of a multicolumn listbox, as it will let you select one cell at a time (but selecting multiple cells may be a problem)
Good luck, and if you do end up implementing your own solution consi
der sharing it at OpenG.org