シンボル名に拡張文字セットを含めてよいかどうか、または 32 文字以上でもよいかどうかを決定します。
サポートされているプラットフォーム: Windows のみ
読み込み専用: いいえ
タイプ: ブール型
このプロパティの初期値は True です。
拡張シンボル名は 255 文字まで可能であり、A~Z、0~9、空白、半角カナ、全角文字(一部不可)、および Microsoft Windows や AutoCAD が他の目的で使用しないすべての特殊文字を含むことができます。
制限付きシンボル名は 31 文字まで可能であり、A~Z、0~9、ドル記号($)、アンダースコア(_)、ハイフン(-)、半角カナ、全角文字(一部不可)を含むことができます。
このプロパティは、シンボル テーブルに格納されている非グラフィックス オブジェクト(線種や画層など)の名前に適用されます。
VBA:
Sub Example_AllowLongSymbolNames()
' This example reads and modifies the preference value that controls
' whether symbol names include extended character sets or more
' than 31 characters.
'
' When finished, this example resets the preference value back to
' its original value.
Dim ACADPref As AcadDatabasePreferences
Dim originalValue As Variant, newValue As Variant
' Get the user preferences object
Set ACADPref = ThisDrawing.preferences
' Read and display the original value
originalValue = ACADPref.AllowLongSymbolNames
MsgBox "The AllowLongSymbolNames preference is set to: " & originalValue
' Modify the AllowLongSymbolNames preference by toggling the value
ACADPref.AllowLongSymbolNames = Not (ACADPref.AllowLongSymbolNames)
newValue = ACADPref.AllowLongSymbolNames
MsgBox "The AllowLongSymbolNames preference has been set to: " & newValue
' Reset the preference back to its original value
'
' * Note: Comment out this last section to leave the change to
' this preference in effect
ACADPref.AllowLongSymbolNames = originalValue
MsgBox "The AllowLongSymbolNames preference was reset back to: " & originalValue
End Sub
Visual LISP:
(vl-load-com)
(defun c:Example_AllowLongSymbolNames()
;; This example reads and modifies the preference value that controls
;; whether symbol names include extended character sets or more
;; than 31 characters.
;;
;; When finished, this example resets the preference value back to
;; its original value.
(setq acadObj (vlax-get-acad-object))
;; Get the drafting preferences object
(setq ACADPref (vla-get-Preferences doc))
;; Read and display the original value
(setq originalValue (vla-get-AllowLongSymbolNames ACADPref))
(alert (strcat "The AllowLongSymbolNames preference is set to: " (if (= originalValue :vlax-true) "1" "0")))
;; Modify the AllowLongSymbolNames preference by toggling the value
(vla-put-AllowLongSymbolNames ACADPref (if (= originalValue :vlax-true) :vlax-false :vlax-true))
(setq newValue (vla-get-AllowLongSymbolNames ACADPref))
(alert (strcat "The AllowLongSymbolNames preference has been set to: " (if (= newValue :vlax-true) "1" "0")))
;; Reset the preference back to its original value
;;
;; * Note: Comment out this last section to leave the change to
;; this preference in effect
(vla-put-AllowLongSymbolNames ACADPref originalValue)
(alert (strcat "The AllowLongSymbolNames preference was reset back to: " (if (= originalValue :vlax-true) "1" "0")))
)