What type in Labwindows is equal to Intptr in .Net?

[Shinedyx]

I just want to use Labwindows to write a instrument control Dll for .Net program, it seems I should use Intptr to store the instrument handle in .Net, but ViSession in CVI seems not proper.

Could some gent can give an example? Thanks very much!

:manhappy:

[Mohan]

ViSession is the correct type for this in C/CVI. ViSession is a UInt32, so you should use System.UInt32 for this in .NET. In .NET, System.IntPtr maps to any pointer type - void* in C. I am not sure why you want to use IntPtr in .NET for this - you should use the type from the native instrument driver, which is ViSession (UInt32) in this case.

[Shinedyx]

Thanks Mohan! I return to UInt32 instead, it also can work. I just take R&S provided VXI/Plug driver as an example to create my instrument control driver, they use Handref to store VISA session, so I think it is better.