const gchar* gdk_pixbuf_get_option ( GdkPixbuf* pixbuf, const gchar* key )
key in the list of options that may have been attached to the
pixbuf when it was loaded, or that may have been attached by another
function using gdk_pixbuf_set_option().
For instance, the ANI loader provides “Title” and “Artist” options. The ICO, XBM, and XPM loaders provide “x_hot” and “y_hot” hot-spot options for cursor definitions. The PNG loader provides the tEXt ancillary chunk key/value pairs as options. Since 2.12, the TIFF and JPEG loaders return an “orientation” option string that corresponds to the embedded TIFF/Exif orientation tag (if present). Since 2.32, the TIFF loader sets the “multipage” option string to “yes” when a multi-page TIFF is loaded. Since 2.32 the JPEG and PNG loaders set “x-dpi” and “y-dpi” if the file contains image density information in dots per inch. Since 2.36.6, the JPEG loader sets the “comment” option with the comment EXIF tag.
A nul-terminated string.
The data is owned by the caller of the method. The value is a NUL terminated UTF-8 string.