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DemandLoadARXApp 属性（ActiveX）

2024-5-18 18:45| 发布者: admin| 查看: 292| 评论: 0|原作者: admin|来自: AutoCAD

指定如果图形包含自定义对象，AutoCAD 是否要求加载第三方应用程序。

支持的平台：仅限 Windows

签名

VBA：

object.DemandLoadARXApp

对象

类型：PreferencesOpenSave

此属性应用于的对象。

属性值

只读：不

类型：枚举acARXDemandLoad

acDemandLoadDisabled：关闭需求加载。
acDemandLoadOnObjectDetect：在打开包含自定义对象的图形时按需加载源应用程序。当您调用应用程序的命令之一时，此设置不会要求加载应用程序。
acDemandLoadCmdInvoke：在调用源应用程序的命令之一时对源应用程序进行需求加载。当您打开包含自定义对象的图形时，此设置不会要求加载应用程序。
acDemandLoadOnObjectDetect + acDemandLoadCmdInvoke：在打开包含自定义对象的图形或调用应用程序的命令之一时，对源应用程序进行需求加载。

言论

此属性的初始值为。acDemandLoadOnObjectDetect + acDemandLoadCmdInvoke

注意：此属性的值存储在 DEMANDLOAD 系统变量中。

例子

VBA：

Sub Example_DemandLoadARXApp()
    ' This example returns the current setting of
    ' DemandLoadARXApp. It then changes the value, and finally
    ' it resets the value back to the original setting.
    
    Dim preferences As AcadPreferences
    Dim currDemandLoadARXApp As Integer
    Dim constant As String
    Dim newConstant As String
    
    Set preferences = ThisDrawing.Application.preferences
    
    ' Retrieve the current DemandLoadARXApp value
    currDemandLoadARXApp = preferences.OpenSave.DemandLoadARXApp
    MsgBox "The current value for DemandLoadARXApp is " & currDemandLoadARXApp, vbInformation, "DemandLoadARXApp Example"
    
    ' Change the value for DemandLoadARXApp
    newConstant = acDemandLoadCmdInvoke
    preferences.OpenSave.DemandLoadARXApp = acDemandLoadCmdInvoke
    MsgBox "The new value for DemandLoadARXApp is " & newConstant, vbInformation, "DemandLoadARXApp Example"
    
    ' Reset DemandLoadARXApp to its original value
    preferences.OpenSave.DemandLoadARXApp = currDemandLoadARXApp
    MsgBox "The DemandLoadARXApp value is reset to " & currDemandLoadARXApp, vbInformation, "DemandLoadARXApp Example"
End Sub

可视化 LISP：

(vl-load-com)
(defun c:Example_DemandLoadARXApp()
    ;; This example returns the current setting of
    ;; DemandLoadARXApp. It then changes the value, and finally
    ;; it resets the value back to the original setting.
    (setq acadObj (vlax-get-acad-object))
    (setq preferences (vla-get-Preferences acadObj))
    
    ;; Retrieve the current DemandLoadARXApp value
    (setq currDemandLoadARXApp (vla-get-DemandLoadARXApp (vla-get-OpenSave preferences)))
    (alert (strcat "The current value for DemandLoadARXApp is " (itoa currDemandLoadARXApp)))
    
    ;; Change the value for DemandLoadARXApp
    (setq newConstant acDemandLoadCmdInvoke)
    (vla-put-DemandLoadARXApp (vla-get-OpenSave preferences) newConstant)
    (alert (strcat "The new value for DemandLoadARXApp is " (itoa newConstant)))
    
    ;; Reset DemandLoadARXApp to its original value
    (vla-put-DemandLoadARXApp (vla-get-OpenSave preferences) currDemandLoadARXApp)
    (alert (strcat "The DemandLoadARXApp value is reset to " (itoa currDemandLoadARXApp)))
)