擅长:python、mysql、java
<p>我发现c++库<a href="http://www.codeplex.com/DirectDrawOverlayLib" rel="nofollow">DirectDrawOverlayLib</a>应该能够做到这一点。引用网站:</p>
<blockquote>
<p>An unmanaged C++ library to create, manage and draw to DirectDraw overlays. A
C++/CLI wrapper for .NET clients is included.</p>
<p>DirectDraw overlays are special DirectDraw surfaces that are shown
over everything else, including full-screen games and applications.
They can be used to implement programs like XFire that display information during fullscreen game operation.</p>
</blockquote>