The PixeLINK 4.0 API is available to you via the assembly PixeLINK.API.dll. Assuming the environment variable ProgramFiles is set properly (most likely it will be set to C:\Program Files), and you installed the SDK to the default location, the assembly will be in %ProgramFiles%\PixeLINK\dotnet.
You can find information in the PixeLINK .NET documentation.
Example code written in VB.NET, C#, and Managed C++ is available. We highly recommend you take a look at these to help you get started.
Some important methods of the API class that will be useful to you are:
|PixeLINK.API Class Methods|
Initialize a camera for use
Takes a ReturnCode and returns whether it indicates success or failure. (If you are familiar with the C API, this is similar to the API_SUCCESS macro).
Here is a quick introduction to the key Pixelink API functions.
And, don't forget that Pixelink support is available if you have problems or get stuck.