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C++修饰名的转换

2009-03-11 11:16:05| 分类： C/C++ | 标签： |举报 |字号大中小订阅

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c++编译后会给函数签名加上很多特有的修饰，比如bool ReqGetGuildUserList(long)将会被编译成?ReqGetGuildUserList@@YA_NJ@Z。用Dependency Walker这个工具可以看的很清楚的。

Dependency Walker工具一般是用来查看dll或者exe的依赖项的，这样就可以在软件发布的时候避免漏掉某些dll，当然对于动态加载的dll是没有办法的。但其中的Undecorate C++ Functions功能也甚是好用。

编译后的dll导出签名格式

功能强大的Undecorate C++ Functions

Undecorate后的C++签名，这样就看的很清楚了

如果要在代码中做这样的转换也是可以的。Windows提供了一个UnDecorateSymbolName函数，用来Undecorates the specified decorated C++ symbol name。该函数的签名为：

DWORD WINAPI UnDecorateSymbolName(    __in   PCTSTR DecoratedName,    __out  PTSTR UnDecoratedName,    __in   DWORD UndecoratedLength,    __in   DWORD Flags  );

如果要在C#中用，对应的PInvoke格式为：

  [DllImport("Dbghelp.dll", CharSet = CharSet.Ansi)]

  private static extern int UnDecorateSymbolName(

      [MarshalAs(UnmanagedType.LPStr)]string DecorateName,

      [Out, MarshalAs(UnmanagedType.LPStr)]StringBuilder UnDecoratedName,

      int UndecoratedLength,

      int Flags);

  public static string UnDecorateSymbolName(string symbolName)

      StringBuilder sb = new StringBuilder();

      int len = UnDecorateSymbolName(symbolName, sb, sb.MaxCapacity, 0);

      if(len != 0)

          return sb.ToString();

      else

          return symbolName;

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