length = [mstr lengthOfBytesUsingEncoding: NSUTF8StringEncoding];
#if ! defined (NS_IMPL_COCOA) || MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_4
length = [mstr lengthOfBytesUsingEncoding: NSUTF8StringEncoding];
#if ! defined (NS_IMPL_COCOA) || MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_4