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BeginOpen 事件（ActiveX）

2024-5-18 18:58| 发布者: admin| 查看: 138| 评论: 0|原作者: admin|来自: AutoCAD

在AutoCAD收到打开现有图形的请求后立即触发。

支持的平台：仅限 Windows

签名

VBA：

object.BeginOpen(Filename)

对象

类型： 应用

计算结果为有效容器对象的对象表达式。在这种情况下，唯一有效的容器是应用程序。

文件名

类型：字符串

正在打开的文件的名称。

言论

一旦AutoCAD收到打开现有文件的请求，就会触发该事件。此请求可以由用户通过“文件打开”对话框以交互方式发出，也可以以编程方式发出。BeginOpen

打开 DXF 格式文件时不触发该事件。BeginOpen

打开现有文件时，当 AutoCAD 完成图形的打开时，该事件之后将跟随该事件。例如，当用户选择“应用程序”菜单“打开”，然后从对话框中选择要打开的文件并选择“打开”按钮时，将触发该事件（一旦处理了“打开”按钮）。一旦图形在 AutoCAD 窗口中可见并准备好工作，就会触发该事件。BeginOpenEndOpenBeginOpenEndOpen

创建新文件时，将触发该事件。NewDrawing

显示模式对话框时不会触发任何事件。

例子

VBA：

Public WithEvents ACADApp As AcadApplication    ' Use with Application Event Examples
Sub Example_AcadApplication_Events()
    ' This example intializes the public variable (ACADApp) which will be used
    ' to intercept AcadApplication Events
    '
    ' The VBA WithEvents statement makes it possible to intercept an generic object
    ' with the events associated with that object.
    '
    ' Before you will be able to trigger any of the AcadApplication events,
    ' you will first need to run this procedure.
    
    ' We could get the application from the ThisDocument object, but that would
    ' require having a drawing open, so we grab it from the system.
    Set ACADApp = GetObject(, "AutoCAD.Application.24.2")
End Sub

Private Sub ACADApp_BeginOpen(FileName As String)
    ' This example intercepts an Application BeginOpen event.
    '
    ' This event is triggered when a drawing is opened by AutoCAD.
    '
    ' To trigger this example event:
    '     1) Make sure to run the example that initializes
    '     the public variable (named ACADApp) linked to this event.
    '
    '     2) Use AutoCAD to open an existing drawing

    ' Use the "FileName" variable to determine which drawing file is being opened
    MsgBox "A drawing is about to be loaded from: " & FileName
End Sub

可视化 LISP：