We have an old VB4 program that uses the Extra (Quickapps) OCX to allow interfacing into each screen of the mainframe program. It essentially 'screen scrapes' the data from the screen and interacts with the VB program. I need to re-write the existing VB4 program with VB6 or .NET and looking for a control OCX compatible with VB and TN3270 mainframe program.
My other options are to use DDE and WinHLLAPI as recommended by our TN 3270 software provider. Can someone let me know if a control exists and if not where to start using DDE and WinHLLAPI?
I also looked at the Jolly Giant QWS3270 software but not sure if it has the features I need or adds anything extra than using DDE and WinHLLAPI.