Unicode collation

[OS923]

Why does this return -50?

Code: [Select]

UCCollateOptions options=kUCCollateStandardOptions;
const UniChar text1='a';
const UniChar text2='b';
Boolean equivalent;
SInt32 order;
OSStatus status=::UCCompareTextNoLocale(options,
                                        &text1,
                                        1,
                                        &text2,
                                        1,
                                        &equivalent,
                                        &order);

[teroyk]

Why does this return -50?

Code: [Select]

UCCollateOptions options=kUCCollateStandardOptions;
const UniChar text1='a';


Good question, I am not that far in unicode programming, but how we should define text1 when Unicode in Mac OS 9 is UTF-16BE = one char is 2 bytes?
btw. does OS 9 support only Unicode characters U+0000...U+FFFF and not characters that takes 4 bytes in UTF-16 (U+10000...U+10FFFF)  UTF-16 does not have 3 byte coding.

[OS923]

This function is for Unicode, not UTF.