Attaches a key/value pair as an option to a GdkPixbuf.
If key already exists in the list of options attached to the pixbuf, the new value is ignored and FALSE is returned.
a nul-terminated string.
TRUE on success
2.2
See Implementation
Attaches a key/value pair as an option to a GdkPixbuf.
If key already exists in the list of options attached to the pixbuf, the new value is ignored and FALSE is returned.