TRY / CATCH_ALL vs try / catch [英] TRY/CATCH_ALL vs try/catch

问题描述

我一直在使用c ++一段时间，我熟悉正常的try / catch。不过，我现在发现自己在Windows上，在VisualStudio中进行COM开发编码。代码的几个部分使用的东西如下：

I've been using c++ for a while, and I'm familiar with normal try/catch. However, I now find myself on Windows, coding in VisualStudio for COM development. Several parts of the code use things like:

TRY {
    ... do stuff
} CATCH_ALL(e) {
    ... issue a warning
}
END_CATCH_ALL;

这些宏的要点是什么？我们尝试过谷歌搜索，但尝试vs TRY很难搜索。

What's the point of these macros? What benefit do they offer over the built-in try/catch?

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推荐答案

这是一个MFC宏：

http://msdn.microsoft.com/en-us/library/t8dwzac0%28VS.71%29.aspx

这个页面说他们是MFC 1.0的补充 - 在新的代码中使用正常的C ++异常：

This page says they're a remnant from MFC 1.0 - use normal C++ exceptions in new code:

MFC版本较低比3.0不支持C ++异常机制。 MFC提供宏来处理异常。

MFC versions lower than 3.0 did not support the C++ exception mechanism. MFC provided macros to deal with exceptions.

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