I'm updating a Installscript installation. I am trying to read a registry value that is a type REG_STRING_EXPAND. I receive back the value, but the symbolic section is still contained in the string. For example I retrieve back %WINSYSDIR%\inetpub\wwwroot. Is there a simple way to convert this to c:\inetput\wwwroot. I'm trying to run an application in the root wwwroot directory, but as this can be moved by the system administrator, I need to locate it via the registry, but on Win7, with the symbolic variable, my LaunchAppAndWait fails as it can't find the file.
There's an ExpandEnvironmentStrings Windows API function you can use, which I gather is the most common solution. An alternative is to take the string apart yourself and call GetEnvVar.
