Application.this

Creates a new #GtkApplication instance.

When using #GtkApplication, it is not necessary to call gtk_init() manually. It is called as soon as the application gets registered as the primary instance.

Concretely, gtk_init() is called in the default handler for the #GApplication::startup signal. Therefore, #GtkApplication subclasses should chain up in their #GApplication::startup handler before using any GTK+ API.

Note that commandline arguments are not passed to gtk_init(). All GTK+ functionality that is available via commandline arguments can also be achieved by setting suitable environment variables such as G_DEBUG, so this should not be a big problem. If you absolutely must support GTK+ commandline arguments, you can explicitly call gtk_init() before creating the application instance.

If non-%NULL, the application ID must be valid. See g_application_id_is_valid().

If no application ID is given then some features (most notably application uniqueness) will be disabled. A null application ID is only allowed with GTK+ 3.6 or later.

  1. this(GtkApplication* gtkApplication, bool ownedRef)
  2. this(string applicationId, GApplicationFlags flags)
    class Application

Parameters

applicationId string

The application ID.

flags GApplicationFlags

the application flags

Return: a new #GtkApplication instance

Throws

ConstructionException GTK+ fails to create the object.

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