Events_Before Close Event Handler Delegate
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A Delegate type used to add an event handler for the BeforeClose event. The BeforeClose event occurs before the workbook closes. If the workbook has been changed, this event occurs before the user is asked to save changes.
public delegate void WorkbookEvents_BeforeCloseEventHandler([Runtime::InteropServices::Out] bool % Cancel);
[System.Runtime.InteropServices.ComVisible(false)] public delegate void WorkbookEvents_BeforeCloseEventHandler(out bool Cancel);
Public Delegate Sub WorkbookEvents_BeforeCloseEventHandler(ByRef Cancel As Boolean)
False when the event occurs. If the event procedure sets this argument to True, the close operation stops and the workbook is left open.