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Hi<br />
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I cant seem to add a reference to that API. &nbsp;
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Hi

I cant seem to add a reference to that API.  

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I am trying to create a small app whereby I can monitor what is going on in a desktop. &nbsp;What I'm currently stuck on is how to find out what is the topmost app running in the system. &nbsp;For example is Internet Explorer the topmost? &nbsp;Or Visual Studio, etc. <br />
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I figure I may need a hook but I'm not sure where to begin on that. &nbsp;Or how to actually find out what is the top most!
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I am trying to create a small app whereby I can monitor what is going on in a desktop.  What I'm currently stuck on is how to find out what is the topmost app running in the system.  For example is Internet Explorer the topmost?  Or Visual Studio, etc. 

I figure I may need a hook but I'm not sure where to begin on that.  Or how to actually find out what is the top most!

Find Topmost Window On Screen

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.

.NET Programming

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).