Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
What will happen when we subclass a windows dialog and dialog is closed?
Scenario is that I am subclassing a dialog and application can launch many instances of that dialog.
Is it necessary to add unsubclassing code to all the dialogs in thier destruction logic.
I think when dialogs get closed there is no need to unsubclass them because dialogs already destroyed.
If you’re using instance subclassing (SetWindowLongPtr), then since when the window gets torn down it doesn’t matter which WndProc it’s using–it’s about to vanish anyway.
If you’re using global subclassing (SetClassLongPtr) then it would probably be a good idea to remove the subclass once the last subclassed window is closed (i.e. not per window) so that any future windows created with that class don’t get subclassed–unless that’s what you want, of course.