private static extern void EchoChar(char value, EchoCharCallback callback);
public static void ApiEchoChar(char value, EchoCharCallback callback) { EchoChar(value, callback); }
private static extern void EchoChar(char value, EchoCharCallback callback);
public static void ApiEchoChar(char value, EchoCharCallback callback) { EchoChar(value, callback); }