Ever wonder how to access Phone APIs from a .NET Compact Framework based application? This technical article, published on Microsoft's MSDN website, explains how to do just that. The author presents an example in which calling native Microsoft Win32 APIs is beneficial within the scope of managed code, written in both C# and VB.NET.
The example looks at common Phone APIs supported by both Microsoft Pocket PC Phone Editions. The article, which includes downloadable code examples, is available here.