Finds the icon at the given position and return its index.
The position’s coordinates are relative to the @entry’s
top left corner. If @x, @y doesn’t lie inside an icon,
-1 is returned. This function is intended for use in a
[signal@Gtk.Widget::query-tooltip] signal handler.
Finds the icon at the given position and return its index.
The position’s coordinates are relative to the @entry’s top left corner. If @x, @y doesn’t lie inside an icon, -1 is returned. This function is intended for use in a [signal@Gtk.Widget::query-tooltip] signal handler.