All of the controls was developed and compiled using Visual Basic 6.
2. Can I use ActivePack controls with Visual Basic 4 ?
No. Because they were compiled with "Apartment Threading Model".
3. Can I use ActivePack controls with Visual Basic 5 ?
Yes. All controls work fine on Visual Basic 5, however will be necessary to have installed the Visual Basic 6 Runtime Libraries (Download) and you must remember to include the file MSVBVM60.DLL in your application installation package.