;替換無效字型程式:
(defun C:TFIX()
	; ******************************************************************************
	; 下一列為使用者要保留的有效的 TrueType 字型檔
	(setq valid_ttfs (list "細明體" "新細明體" "標楷體" "@細明體" "@新細明體" "@標楷體" ))	
	(setq def_shx "txt.shx" )
	(setq def_big "visiotc.shx" )
	; ******************************************************************************

	(setq m_style (tblnext "style" T))
	(while m_style
		(setq m_style_name (cdr (assoc 2 m_style)))
		(setq m_font1 (cdr (assoc 3 m_style)))
		(setq m_font2 (cdr (assoc 4 m_style)))
		(setq update nil)
		(if (= m_font2 "" )
			(progn	; is pure english or TrueType
				(if (isShx m_font1 )
					(progn ; Is shx font
						(if (not (findfile m_font1))
							(setq m_font1 def_shx update T)
						)
					)
					(progn	; Is truetype font
						(if (and (not (member m_font1 valid_ttfs ))
								 (/= (substr m_font1 1 1) "@") )
							(setq m_font1 def_shx m_font2 def_big update T)
						)
					)
				)
			)
			(progn	; is bigfont
				(if (and (/= m_font1 "") (not (findfile m_font1)))
					(setq m_font1 def_shx update T)
				)
				(if (not (findfile m_font2))
					(setq m_font2 def_big update T)
				)
			)
		)
		(if (and update (setq m_e (tblobjname "style" m_style_name))) (progn
			(setq m_g (entget m_e))
			(princ (strcat "\n替換字型 " m_style_name "=" m_font1 "," m_font2 ))
			(setq m_g (subst (cons 3 m_font1) (assoc 3 m_g) m_g))
			(setq m_g (subst (cons 4 m_font2) (assoc 4 m_g) m_g))
			(entmod m_g)
		))
		(setq m_style (tblnext "style"))
	)
	(setq count 0)
	(setq ss (ssget "x" (list (cons 0 "TEXT") (cons 71 6) (cons 50 pi))))
	(if ss (progn
		(setq ct 0)
		(repeat (sslength ss)
			(setq e (ssname ss ct))
			(setq g (entget e))
			(setq g (subst (cons 71 0) (assoc 71 g) g))
			(entmod g)
			(setq ct (1+ ct))
		)
		(setq count (+ count ct))
	))
	(setq blk (tblnext "block" T))
	(while blk
		(setq e (cdr (assoc -2 blk)))
		(while e
			(setq g (entget e))
			(if (= (cdr (assoc 0 g)) "TEXT") (progn
				(if (and (= (cdr (assoc 71 g)) 6) (= (cdr (assoc 50 g)) pi) ) (progn
					(setq g (subst (cons 71 0) (assoc 71 g) g))
					(if (= (cdr (assoc 62 g)) 1) (progn
						(setq g (subst (cons 62 2) (assoc 62 g) g))
					))
					(setq count (1+ count))
					(entmod g)
				))
			))
			(setq e (entnext e))
		)
		(entupd (cdr (assoc -2 blk)))
		(setq blk (tblnext "block"))
	)

	(command "regen")
	(print count) (princ " 個字替換完成!" ) (princ)
)

(defun IsShx( filename / m_len )
	(setq m_len (strlen filename))
	(and (> m_len 3) (= (strcase (substr filename (- m_len 3) 4)) ".SHX") )
)

(princ "\n替換無效字型指令 TFIX")(princ)