VB6 to VB 2010 Help Needed.

Comments

• localroger Posts: 3,452

  2012-09-09 11:19 edited 2012-09-09 11:19

  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 Posts: 3,629

  2012-09-09 11:44 edited 2012-09-09 11:44

  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 Posts: 2,702

  2012-09-09 12:13 edited 2012-09-09 12:13

  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 Posts: 3,452

  2012-09-09 13:00 edited 2012-09-09 13:00

  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 Posts: 2,702

  2012-09-09 14:15 edited 2012-09-09 14:15

  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 Posts: 1,716

  2012-09-09 14:42 edited 2012-09-09 14:42

  Take a look at this, it might be helpful:
  
  http://msdn.microsoft.com/en-us/library/8ccdh774(v=vs.100).aspx
  
  C.W.