Calls the user-defined command that is associated with a view when the user double-clicks anywhere within that view.
True if the framework finds a command; otherwise false.
In order to support custom mouse behavior, you must call this function when you process the WM_LBUTTONDBLCLK message. This method will execute the command associated with the view ID supplied by iViewId. For more information about custom mouse behavior, see Keyboard and Mouse Customization.