# Function Reference

# _WinAPI_ExpandEnvironmentStrings

Expands environment variable strings and replaces them with their defined values

#include <WinAPISys.au3>
_WinAPI_ExpandEnvironmentStrings ( $sString )

## Parameters

$sString | String to convert for environment variables

## Return Value

Success: | Converted string
Failure: | Set the @error flag to non-zero, call _WinAPI_GetLastError() to get extended error information

## See Also

Search ExpandEnvironmentStrings in MSDN Library.

## Example

    #include <MsgBoxConstants.au3>
    #include <WinAPISys.au3>

    MsgBox($MB_SYSTEMMODAL, "Environment string", "%windir% = " & _WinAPI_ExpandEnvironmentStrings("%windir%"))