毕业论文外文翻译-利用VsualC++把代码运行在多平台上.doc

外文原文 From one code base to many platforms using Visual C++ Multiple-platform development is a hot issue today. Developers want to be able to support diverse platforms such as the Microsoft? Windows? version 3.x, Microsoft Windows NT?, and Microsoft Windows 95 operating systems, and Apple?, Macintosh?, UNIX, and RISC (reduced instruction set computer) machines. Until recently, developers wanting to build versions of their application for more than one platform had few choices: Maintain separate code bases for each platform, written to the platforms native application programming interface (API). Write to a virtual API such as those provided by cross-platform toolsets. Build their own multiple-platform layer and support it. Today, however, a new choice exists. Developers can use their existing code written to the Windows API and, using tools available from Microsoft and third parties, recompile for all of the platforms listed above. This paper looks at the methods and some of the issues involved in doing so. Currently the most lucrative market for graphical user interface (GUI) applications, after Microsoft Windows, is the Apple Macintosh. However, vast differences separate these wholly different operating systems, requiring developers to learn new APIs, programming paradigms, and tools. Generally, Macintosh development requires a separate code base from the Windows sources, increasing the complexity of maintenance and enhancement. Because porting code from Windows to the Macintosh can be the most difficult porting case, this paper concentrates in this area. In general, if your code base is sufficiently portable to enable straightforward recompiling for the Macintosh (excluding any platform-specific, or edge code, you may elect to include), youll find that it will come up on other platforms easily as well. Microsoft Visual C++? Cross-Development Edition for Macintosh (Visual C++ for Mac?) provides a set of Windows NT– or Windows 95–hosted tools for recompiling your W