Keyboard Accelerators
Keyboard accelerators are key combinations that generate WM_COMMAND (or, in some cases, WM_SYSCOMMAND) messages. Most often, programs use keyboard accelerators to duplicate the action of common menu options, but they can also perform nonmenu functions. For instance, some Windows programs have an Edit menu that includes a Delete or Clear option; these programs conventionally assign the Del key as a keyboard accelerator for this option. The user can choose the Delete option from the menu by pressing an Alt-key combination or can use the keyboard accelerator simply by pressing the Del key. When the window procedure receives a WM_COMMAND message, it does not have to determine whether the menu or the keyboard accelerator was used. ...
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