| BeginClose 事件 (ActiveX) 在AutoCAD收到关闭图形的请求后立即触发。 支持的平台:仅限 Windows 例子VBA: Private Sub AcadDocument_BeginClose()
    ' This example intercepts a drawing BeginClose event.
    '
    ' This event is triggered when a drawing receives a request to close.
    '
    ' To trigger this example event: Close an open drawing
    MsgBox "A drawing has just been closed!"
End Sub可视化 LISP: Not available | 
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