Creates a new gtk.app_chooser_dialog.AppChooserDialog for the provided content type.
The dialog will show applications that can open the content type.
a gtk.window.Window
flags for this dialog
a content type string
a newly created gtk.app_chooser_dialog.AppChooserDialog
Deprecated: This widget will be removed in GTK 5
Creates a new gtk.app_chooser_dialog.AppChooserDialog for the provided content type.
The dialog will show applications that can open the content type.