function RegQueryStringValue(const RootKey: Integer; const SubKeyName, ValueName: String; var ResultStr: String): Boolean;
Queries the specified REG_SZ- or REG_EXPAND_SZ-type value, and returns the data in ResultStr. Returns True if successful. When False is returned, ResultStr is unmodified.
var Country: String; begin if RegQueryStringValue(HKEY_CURRENT_USER, 'Control Panel\International', 'sCountry', Country) then begin // Successfully read the value MsgBox('Your country: ' + Country, mbInformation, MB_OK); end; end;