IconTheme.lookupIcon

gtk.icon_paintable.IconPaintable lookupIcon(string iconName,  string[]  fallbacks,  int  size,  int  scale,  gtk.types.TextDirection direction,  gtk.types.IconLookupFlags flags)

Looks up a named icon for a desired size and window scale, returning a [gtk.icon_paintable.IconPaintable].

The icon can then be rendered by using it as a [gdk.paintable.Paintable], or you can get information such as the filename and size.

If the available icon_name is not available and fallbacks are provided, they will be tried in order.

If no matching icon is found, then a paintable that renders the "missing icon" icon is returned. If you need to do something else for missing icons you need to use [gtk.icon_theme.IconTheme.hasIcon].

Note that you probably want to listen for icon theme changes and update the icon. This is usually done by overriding the GtkWidgetClass.css-changed() function.

Parameters

`iconName`	the name of the icon to lookup
`fallbacks`
`size`	desired icon size.
`scale`	the window scale this will be displayed on
`direction`	text direction the icon will be displayed in
`flags`	flags modifying the behavior of the icon lookup

Returns

a [gtk.icon_paintable.IconPaintable] object

containing the icon.