C# / .NET API equivalent for imgGetCameraAttributeString, etc.

[Gabriel-r]

Hi,

I have some software written in C against the C API for IMAQ.  I'd like to port it to C# and the .NET API.  However, after looking through the documentation for the .NET class libraries (Vision.Acquisition.Imaq namespace), I can't find an equivalent for the following C API functions:

imgGetCameraAttributeString

imgSetCameraAttributeString

imgGetCameraAttributeNumeric

imgSetCameraAttributeNumeric

Did I miss something in the docs somewhere?  If not, can I call the C functions from C# via P/Invoke?  It's not clear how that would work, since the C API requires a SESSION_ID which I don't know how to get from an ImaqSession object.

Note that ImaqSession.Attributes is _not_ sufficient for what I need.   I need to use camera-specific attributes, which are not accessable via that collection.

Thanks for your time,

Gabriel

[Gabriel-r · Accepted solution]

Ah, nevermind, I missed Session.Attributes.SetCameraAttribute().  Will try that one out.

[uk1980]

Can you point me to the documentation for the C#/.net API for Vision.Acquisition.Imaq namespace?

[Gabriel-r]

It might depend on what version of Visual Studio & NI Vision you have installed, but on my computer, the VS2008 Documentation has the Imaq classes at:

ms-help://MS.VSCC.v90/MS.VSIPCC.v90/NI.MeasurementStudio.2008/NINETIMAQ/html/NationalInstruments.Vision.Acquisition.Imaq.html

Putting URL that into Internet Explorer 8 also works.

[uk1980]

Great! Thanks.