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Is it possible to use private APIs in Windows Phone 8 development similar to iOS development? Of course, this is NOT about apps going to get published (AppStore/Marketplace). But there are a lot of use cases for non-public projects where a developer wants to call internal system functions. With the Windows Phone 8 SDK installed, one can mount the Windows Phone 8 Emulator image located in C:\Program Files (x86)\Microsoft SDKs\Windows Phone\v8.0\Emulation\Images . In the main partition of the Windows Phone OS, one can navigate to Windows\System32 and inspect the system DLL files with a tool like Dependency Walker or IDA Pro. There are a lot of functions that sound very interesting but which are not publicly available and thus not documented. The question is: is it possible to call them somehow from an app or by other means? Just a few examples of interesting functions (there are much more): ShellChrome.dll: InvokeStartMenu, InvokeScreenCapture, InvokeVolumeUp, LockDevice, ... InputInjection.dll: ApiInjectInitialize, ApiInjectTouchEvent, ... ... I tried to get LoadLibrary (specifically, LoadLibraryExA) working somehow in a native Windows Phone App project, and to load and call these functions (the loading of the library worked). Long story short, I ended up with access violation errors or similar when trying to call the functions (maybe because of the sandboxed execution environment). Another problem is, that I can only guess the signatures (arguments) of the functions. I can't find them out with the tools I use.

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