Create a new #WebKitPrintCustomWidget with given @widget and @title. The @widget
ownership is taken and it is destroyed together with the dialog even if this
object could still be alive at that point. You typically want to pass a container
widget with multiple widgets in it.
Create a new #WebKitPrintCustomWidget with given @widget and @title. The @widget ownership is taken and it is destroyed together with the dialog even if this object could still be alive at that point. You typically want to pass a container widget with multiple widgets in it.