Writing JPEG image from BLOB field

I've got a BLOB field in a MySQL database that I need to fetch and write into a .jpg file. I already know how to query the database and开发者_运维百科 get the result, but I can't write it into a valid .jpg file. Anyone got any help?

Thanks

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If you're using SDL_image, look into IMG_Load_RW() in particular and SDL_RWops in general.