rb是对你自己做的 你自己只能读  管不了别人

"r"

Opens for reading. If the file does not exist or cannot be found, the fopen call fails.

我问的就是怎样才能像WM那样管得了别人啊，你知道么？

HANDLE CreateFile(
  LPCTSTR lpFileName,                         // file name
  DWORD dwDesiredAccess,                      // access mode
  DWORD dwShareMode,                          // share mode
  LPSECURITY_ATTRIBUTES lpSecurityAttributes, // SD
  DWORD dwCreationDisposition,                // how to create
  DWORD dwFlagsAndAttributes,                 // file attributes
  HANDLE hTemplateFile                        // handle to template file
);

Parameters

dwShareMode
[in] Specifies how the object can be shared. If dwShareMode is 0, and CreateFile succeeds, the object cannot be shared and cannot be opened again until the handle is closed. Please refer the information concerning sharing violations in the Remarks section.

谢谢，windows下可以了。
可惜Linux下似乎没什么方法……