set_option
Description:
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.
Parameters:
| this |
a `GdkPixbuf` |
| key |
a nul-terminated string. |
| value |
a nul-terminated string. |
Returns:
|
`TRUE` on success |