;;;从AutoCAD 2013 Active Reference帮助中code Examples中提取
;;;本源代码由 xshrimp 2013.2.20 搜集整理,版权归原作者所有！


(vl-load-com)
(defun c:Example_PlotRotation()
    ;; This example reads and modifies the PlotRotation
    ;; Layout value.
    ;; When finished, this example resets the  value back to
    ;; its original value.
    (setq acadObj (vlax-get-acad-object))
    (setq doc (vla-get-ActiveDocument acadObj))
    
    ;; Get the layout object
    (setq ACADLayout (vla-get-ActiveLayout doc))
    
    ;; Read and display the original value
    (setq originalValue (vla-get-PlotRotation ACADLayout))
    (alert (strcat "The PlotRotation value is set to: " (itoa originalValue)))

    ;; Modify the PlotRotation preference by toggling the value
    (vla-put-PlotRotation ACADLayout ac180degrees)
    (alert (strcat "The PlotRotation preference has been set to: " (itoa (vla-get-PlotRotation ACADLayout))))

    ;; Reset the preference back to its original value
    (vla-put-PlotRotation ACADLayout originalValue)
    (alert (strcat "The PlotRotation preference was reset back to: " (itoa originalValue)))
)