Given a #GtkSelectionData object holding a list of targets, determines if any of the targets in targets can be used to provide a #GdkPixbuf.
whether to accept only targets for which GTK+ knows how to convert a pixbuf into the format
true if selection_data holds a list of targets, and a suitable target for images is included, otherwise false.
Given a #GtkSelectionData object holding a list of targets, determines if any of the targets in targets can be used to provide a #GdkPixbuf.