The Old New Thing

How does Explorer determine the delay between clicking on an item and initiating an edit?

Ian Boyd wants to know why the specific value of 500ms was chosen as the edit delay in Windows Explorer. Because it's your double-click time. Since the double-click action (execute) is not an extension of the single-click action (edit), Explorer (and more generally, list view) waits for the double-click timeout before entering edit mode so...