Increases the use count of application.
Use this function to indicate that the application has a reason to
continue to run. For example, g_application_hold() is called by GTK+
when a toplevel window is on the screen.
To cancel the hold, call g_application_release().
Increases the use count of application. Use this function to indicate that the application has a reason to continue to run. For example, g_application_hold() is called by GTK+ when a toplevel window is on the screen. To cancel the hold, call g_application_release().