[讨论]：AutoCAD2005中的 acad-push-dbmod

eachy

;|（只读）
类型：整数
不保存

用位码指示图形的修改状态。该值是下列位码值之和：


1 对象数据库被修改

4 数据库变量被修改

8 窗口被修改

16 视图被修改

32 字段被修改


保存图形时，DBMOD 的值被重置为 0。
|;
;;Stores the current value of the DBMOD system variable

(acad-push-dbmod)

;;This function is used with acad-pop-dbmod to control the DBMOD system variable.
;;You can use this function to change a drawing without changing the DBMOD system
;;variable. The DBMOD system variable tracks changes to a drawing and triggers
;;save-drawing queries.

;;This function is implemented in acapp.arx, which is loaded by default.
;;This function pushes the current value of the DBMOD system variable onto
;;an internal stack. To use acad-push-dbmod and acad-pop-dbmod, precede operations
;;with acad-push-dbmod and then use acad-pop-dbmod to restore the original value of
;;the DBMOD system variable.

;;Return Values

;;Always returns T.

;;Examples

;;The following example shows how to store the modification status of a drawing,
;;change the status, and then restore the original status.

(acad-push-dbmod)
(setq new_line '((0 . "LINE") (100 . "AcDbEntity") (8 . "0")
             (100 . "AcDbLine") (10 1.0 2.0 0.0) (11 2.0 1.0 0.0)
             (210 0.0 0.0 1.0)))
(entmake new_line)            ; Set DBMOD to flag 1
(command "_color" "2")        ; Set DBMOD to flag 4
(command "_-vports" "_SI")    ; Set DBMOD to flag 8
(command "_vpoint" "0,0,1")   ; Set DBMOD to flag 16
(acad-pop-dbmod)   

;;acad-pop-dbmod

;;Restores the value of the DBMOD system variable to the value that was
;;most recently stored with acad-push-dbmod

(acad-pop-dbmod)

;;This function is used with acad-push-dbmod to control the DBMOD system
;;variable. The DBMOD system variable tracks changes to a drawing and
;;triggers save-drawing queries.

;This function is implemented in acapp.arx, which is loaded by default.
;;This function pops the current value of the DBMOD system variable off
;;an internal stack.

;;Return Values

;;Returns T if successful; otherwise, if the stack is empty, returns nil.




问题：4 数据库变量被修改都包括了哪些？

LUCAS

儲存於：圖面--------資料庫變數 (ORTHOMODE)
儲存於：登錄--------非資料庫變數 (OSMODE)

/db_自贡黄明儒_

这个好象highflybir有所研究，实在是搞不懂，帮你顶一下。希望有看到高手们讨论:D