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AutoCAD 2023 开发者帮助

SavePreviewThumbnail 属性（ActiveX）

2024-5-18 18:57| 发布者: admin| 查看: 233| 评论: 0|原作者: admin|来自: AutoCAD

指定是否将 BMP 预览图像与图形一起保存。

支持的平台：仅限 Windows

签名

VBA：

object.SavePreviewThumbnail

对象

类型：PreferencesOpenSave

此属性应用于的对象。

属性值

只读：不

类型：布尔

True：不创建预览图像。
False：创建预览图像。

言论

此属性的初始值为。True

注意：此属性的值保存在 THUMBSAVE 系统变量中。

例子

VBA：

Sub Example_SavePreviewThumbnail()
    ' This example returns the current setting of
    ' SavePreviewThumbnail. It then changes the value, and finally
    ' it resets the value back to the original setting.
    
    Dim preferences As AcadPreferences
    Dim currSavePreviewThumbnail As Boolean
    
    Set preferences = ThisDrawing.Application.preferences
    
    ' Retrieve the current SavePreviewThumbnail value
    currSavePreviewThumbnail = preferences.OpenSave.SavePreviewThumbnail
    MsgBox "The current value for SavePreviewThumbnail is " & preferences.OpenSave.SavePreviewThumbnail, vbInformation, "SavePreviewThumbnail Example"
    
    ' Change the value for SavePreviewThumbnail
    preferences.OpenSave.SavePreviewThumbnail = Not (currSavePreviewThumbnail)
    MsgBox "The new value for SavePreviewThumbnail is " & preferences.OpenSave.SavePreviewThumbnail, vbInformation, "SavePreviewThumbnail Example"
    
    ' Reset SavePreviewThumbnail to its original value
    preferences.OpenSave.SavePreviewThumbnail = currSavePreviewThumbnail
    MsgBox "The SavePreviewThumbnail value is reset to " & currSavePreviewThumbnail, vbInformation, "SavePreviewThumbnail Example"
End Sub

可视化 LISP：

(vl-load-com)
(defun c:Example_SavePreviewThumbnail()
    ;; This example returns the current setting of
    ;; SavePreviewThumbnail. 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 SavePreviewThumbnail value
    (setq currSavePreviewThumbnail (vla-get-SavePreviewThumbnail (vla-get-OpenSave preferences)))
    (alert (strcat "The current value for SavePreviewThumbnail is " (if (= currSavePreviewThumbnail :vlax-true) "True" "False")))
    
    ;; Change the value for SavePreviewThumbnail
    (vla-put-SavePreviewThumbnail (vla-get-OpenSave preferences) (if (= currSavePreviewThumbnail :vlax-true) :vlax-false :vlax-true))
    (setq newValue (vla-get-SavePreviewThumbnail (vla-get-OpenSave preferences)))
    (alert (strcat "The new value for SavePreviewThumbnail is " (if (= newValue :vlax-true) "True" "False")))
    
    ;; Reset SavePreviewThumbnail to its original value
    (vla-put-SavePreviewThumbnail (vla-get-OpenSave preferences) currSavePreviewThumbnail)
    (alert (strcat "The SavePreviewThumbnail value is reset to " (if (= currSavePreviewThumbnail :vlax-true) "True" "False")))
)