Creates a new AdwApplication.
If application_id is not NULL, then it must be valid. See [func@Gio.Application.id_is_valid].
If no application ID is given then some features (most notably application uniqueness) will be disabled.
The application ID
The application flags
the newly created AdwApplication
ConstructionException GTK+ fails to create the object.
1.0
See Implementation
Creates a new AdwApplication.
If application_id is not NULL, then it must be valid. See [func@Gio.Application.id_is_valid].
If no application ID is given then some features (most notably application uniqueness) will be disabled.