路径字符串中包含环境变量,有什么简便的处理方法吗？

[snailmmx]

这样一个路径字符串"%windir%\test.txt",windir是环境变量,现在想根据系统设计把它转换成"C:\windows\test.txt",除了手工写代码进行转换,是不是还有别的简单的方法,比如winapi来帮助完成这样的操作?
谢谢.

[居易锦风]

一 用GetSystemDirectory获取系统目录
二 用CString的replace函数把%windir%替换成GetSystemDirectory获取的目录位置

[lixiaosan]

GetSystemDirectory

[largedong]

GetEnvironmentVariable()

[syy64]

long i;
CString str;
str = "%windir%\test.txt";
i = str.GetLength();
str.Right(i-8);
str = "c:\windows"+str;

[anothervip]

ExpandEnvironmentStrings()

DWORD ExpandEnvironmentStrings(
LPCTSTR lpSrc, // pointer to string with environment variables
LPTSTR lpDst, // pointer to string with expanded environment
// variables
DWORD nSize // maximum characters in expanded string
);

lpSrc
Pointer to a null-terminated string that might contain references to environment-variable strings of the form:
%variableName%

lpDst
Pointer to a buffer to receive a copy of the source buffer, after all environment-variable name substitutions have been performed.