With PAnsiChar(SDL_GetHint(PChar(UTF8Encode(SDL_HINT_RE NDER_SCALE_QUALITY))));
work OK, but with
UTF8String(SDL_GetHint(PChar(UTF8Encode(SDL_HINT_R ENDER_SCALE_QUALITY))));
or UTF8String(PChar(SDL_GetHint(PChar(UTF8Encode(SDL_ HINT_RENDER_SCALE_QUALITY)))));
or PChar(UTF8String(SDL_GetHint(PChar(UTF8Encode(SDL_ HINT_RENDER_SCALE_QUALITY)))));
not work.

Thanks