get_startup_notify_id

Description:

public virtual string? get_startup_notify_id (AppInfo info, List<File> files)

Initiates startup notification for the application and returns the `XDG_ACTIVATION_TOKEN` or `DESKTOP_STARTUP_ID` for the launched operation, if supported.

The returned token may be referred to equivalently as an ‘activation token’ (using Wayland terminology) or a ‘startup sequence ID’ ( using X11 terminology). The two are interoperable.

Activation tokens are defined in the XDG Activation Protocol, and startup notification IDs are defined in the freedesktop.org Startup Notification Protocol.

Support for the XDG Activation Protocol was added in GLib 2.76.

Parameters:

this	a AppLaunchContext
info	a AppInfo
files	a List of File objects

Returns:

a startup notification ID for the application, or null if not supported.