The ExpandEnvironmentStrings function expands environment-variable strings and replaces them with their defined values.
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 |
); |
%variableName%
For each such reference, the %variableName% portion is replaced with the current value of that environment variable.
The replacement rules are the same as those used by the command interpreter.
Case is ignored when looking up the environment-variable name. If the name is
not found, the %variableName% portion is left
undisturbed.
If the function succeeds, the return value is the number of characters stored in the destination buffer. If the number of characters is greater than the size of the destination buffer, the return value is the size of the buffer required to hold the expanded strings.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
file: /Techref/os/win/api/win32/func/src/f23_1.htm, 3KB, , updated: 2000/4/7 11:19, local time: 2024/11/27 07:34,
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