Sets the icon for applications that are launched with this context.
Window Managers can use this information when displaying startup notification.
See also [method@Gdk.AppLaunchContext.set_icon_name].
a #GIcon, or %NULL
See Implementation
Sets the icon for applications that are launched with this context.
Window Managers can use this information when displaying startup notification.
See also [method@Gdk.AppLaunchContext.set_icon_name].