VB6 to VB 2010 Help Needed.

NWCCTV

I have a VB6 project folder that I somehow need to get converted to VB 2010 Express. Any ideas? The converters on the web do not work as I have tried several of them.

localroger

It depends to a great extent on what VB6 features your application uses; the automatic converters don't work because VB.NET is quite simply a different language than VB6, and simply does not implement some very fundamental features of VB6. You probably used a feature that doesn't exist in .NET, and will have to code around it.

NWCCTV

There in lies the issue. I did not code this. It is a driver/program to run a 3 port USB stepper motor driver. The manufacturer, although still in business, refuses to update the .ocx file. I have no way of opening this file to see what is in it to try and duplicate it. The forms within the project I can handle but I am stuck with the .ocx.

In thinking about it, is it possible to call up the .ocx file within my own VB 2010 app without having to modify it, or will I need to create a .dll instead?

Mike G

ocx files are binaries - COM. Therefore, you need the source to modify it!

It is possible to wrap an ocx in .NET using runtime callable wrappers; COM InterOp.

If you have the .NET SDK, you can use tlbimp.exe to build the wrapper and expose the interfaces.

localroger

NWCCTV is using Express, the free version of .NET. The ability to use .ocx plugins is probably one of the things missing from that.

Mike G

I believe the OP can call the ocx (COM Object) with express. It's part of the framework not the editor.

http://msdn.microsoft.com/en-us/library/8bwh56xe.aspx
http://msdn.microsoft.com/en-us/library/ms973800.aspx

The ability to create COM object and expose its' interface in VS Express is another thing.

ctwardell

Take a look at this, it might be helpful:

http://msdn.microsoft.com/en-us/library/8ccdh774(v=vs.100).aspx

C.W.