到目前为止，我发现了MSDN介绍Getting started with Metro style apps，它链接到可用的API集，包括两个本机API：
> Windows Runtime(WinRT) – “操作系统内置的本机API。
Metro风格应用的基础。在C中实现并支持
JavaScript，C#，Visual Basic和C，以一种自然的感觉
每种语言“。
> Win32 and COM for Metro style apps – “Win32的子集
和COM API，您可以在Metro风格的应用程序中使用“。Quote：
Metro style apps can use a subset of the Win32 and COM API. This
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subset of APIs was chosen to support key scenarios for Metro style
apps that were not already covered by the Windows Runtime,HTML/CSS,
or other supported languages or standards. The Windows App
Certification Kit ensures that your app uses only this subset of the
Win32 and COM API.旁注：根据Metro Windows Store博客和获奖者已经closed on January 8,2012的第一个Metro应用程序竞赛已经在07年7月底 – 这些Metro应用程序已经可以通过Windows 8 Consumer Preview。
解决方法
Writing Hello World for WinRT in Delphi
There is relatively little information out there on developing Native
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Metro applications,especially for languages other than those that
Microsoft has provided projections for (C++,C#,and JavaScript).
Other languages,including Delphi,need to create their own
projections before they can use them effectively. I’ve been
investigating getting Delphi to produce native applications for WinRT.他的文章Hello World: Hooking events显示了如何使用Delphi的Metro“组播委托”事件处理程序。