The Old New Thing

Why does Ctrl+ScrollLock cancel dialogs?

Commenter Adam Russell asks why Ctrl+ScrollLock cancels dialogs. Easy. Because Ctrl+ScrollLock is the same as Ctrl+Break, and Ctrl+Break cancels dialogs. Okay, that answer actually raises two more questions. First, why is Ctrl+ScrollLock the same as Ctrl+Break? This is a consequence of the backward compatibility designed into the Enhanced ...