Index
 1 LD_PRELOADµÄÒâÒå ºÍ XA+CVµÄÔ­Àí
 2 DEBUG OUTPUT
 3 Ö¸¶¨ libX11.soµÄλÖÃ
 4 ÊäÈëģʽºÍÏÔʾģʽ
 5 ÊÊÓÃÈíÌå
 6 +CV
 7 ÒÑÖª BUG

1  LD_PRELOAD µÄÒâÒå
	ÔÚÐí¶à×÷ҵϵͳÏÂ(sunos , linux , freebsd ....)
	Ö´ÐгÌʽ»á×Ô¶¯¶¯Ì¬Áª½áµ½»·¾³±äÊýLD_PRELOADËùÖ¸ÏòµÄ¶¯Ì¬³Ìʽ¿âµµ
	XA µÄÔ­Àí¾ÍÊÇÀûÓÃÕâ¸ö·½·¨À¹½Ø libX11.so µÄº¯Êý¹¦ÄÜ,Ö»Òª³Ìʽ±¾Éí
	Ô­±¾Óкô½ÐlibX11.so µÄ NextEvent »ò XLookupStringsµÄ»°,¶¼»á±»XA
	À¹½Ø,ÒÀÕÕÒ»°ãµÄ³Ìʽд×÷·½Ê½,¿ÉÒÔÈñ»À¹½ØµÄ³ÌʽӵÓкÍXcin¹µÍ¨µÄ»ú»á.
	½ø¶øÓµÓÐÖÐÎÄÊäÈëµÄÄÜÁ¦.
	ÓÉì¶XAµÄÔ­Àí¾ÍÊÇÀûÓÃÀ¹½Øº¯ÊýµÄ·½Ê½ÆÛÉÏÂ÷ÏÂ,ËùÒÔÓкܶàÇéÐÎXAµÄÆ­Êõ»á
	ʧÁé,¾ÍÈçͬDOSʱ´úµÄÖÐÎÄϵͳһÑù,µ«Ò»°ãµÄÇéÐÎÏÂÊÇ¿ÉÒÔµÄ,²»¹ýÓÐЩӢ
	ÎÄÈíÌåÓÐÓÉûÓп¼Âǵ½8bitµÄÊäÈë,ËùÒÔÓÐʱҪ°Ñlocaleµ÷¶Ô²ÅÐÐ,²»¹ýÕâÊÇ
	ÈíÌåµÄÎÊÌâ,XA or Xcin ²»¸ºÔð,¾ÍÈçͬcwin95ÏÂÓÐЩÈíÌåÖÐÎÄÒ²ÓÐÎÊÌâ.

	ÁíÍâÒ»¸öÎÊÌâÊÇ LD_PRELOAD±¾ÉíµÄÏÞÖÆ,ÓÉ춰²È«ÉϵÄÎÊÌâ, µ±ÄãÖ´Ðе½
	¸Ä±äÉí·Ý»òȨÏ޵ijÌʽʱ,µ¼ÖÂuid!=euid,ÔòLD_PRELOAD×Ô¶¯Ê§Ð§,XAµ±È»
	ʧȥ×÷ÓÃ,¿ÉÒÔÀûÓÃXAµÄ°ì·¨ÐÞ¸ÄlibX11.so,¾Í²»ÓÃLD_PRELOADÁË.

	±È½ÏÄѽâ¾õµÃÎÊÌâÊÇ,Èç¹û³ÌʽÊÇstatic linked µÄ»°,ÄǾÍËãÐÞ¸ÄlibX11.so
	ҲûÓÃ,Ö»ºÃÀûÓÃ"ÀàËÆ"XAµÄ·½·¨ÐÞ¸ÄXserver .

	ÔÚһЩ×÷ҵϵͳÏÂ,ûÓÐLD_*ϵÁеĻ·¾³±äÊý,µ«ÓÐ_RLD_*ϵÁеÄ,
	Ó÷¨ÓÐÒ»µã²îÒì,µ«²î²»¶à

	+CV ÀàËÆ XA ,Ö»²»¹ýËûÈ¡´úµÄÊÇ ÏÔʾµÄ²¿·Ý(XDraw.....Strings)

2 DEBUG OUTPUT
	 /tmp/wraplog ÊÇ log ËùÔÚ,¿ÉÒÔµ¼Ïòµ½/dev/stderr µÈµÈµØ·½,
	Èç¹ûÐèÒª½Ï¶àµÄ³ý´íѶϢ,ÇëÔÚmakeʱdefine P_LOG

3 Ö¸¶¨ libX11.soµÄλÖà  
	compileÊÇ»á²ÂÒ»ÏÂÄãµÄlibX11.so µÄλÖÃ,´óÖÂÉÏ»á²Â¶Ô,
	Èç¹ûÄãÓõÄÊÇÆäËûµØ·½compileÀ´µÄbinary,»òÕ߸ıäϵͳµÄ»°
	¿ÉÒÔÓà »·¾³±äÊý XA_LIBX11 µÄÖÊ,È¡´úÔ­±¾ÄÚ¶¨µÄlibX11.so µÄ·¾¶, 
	±È·½XA_LIBX11=/usr/X11/lib/libX11.so

4 ÊäÈëģʽºÍÏÔʾģʽ
	ÊäÈëģʽÓÐÈýÖÖ 0) Disable   
			ʹXAµÄ¹¦ÄÜʧЧ, ÓÃÔÚʹÓñ¾À´¾ÍÖ§Ô®xcinÈíÌåµÄʱºò
	      	 1) Tradition
			XA0.3֮ǰµÄ·½·¨,ÊäÈëʱÅäºÏCXwinµÄ»­Ãæ±È½ÏºÃ
		 2) Discrete 
			Ò»¼ü 1byte,ÄÜʹÓõÄÈíÌå½Ï¶à, cmdtool, textedit,
			xcoral µÈµÈ.µ«ÊäÈëʱÅäºÏCXwinÏÔʾ±È½ÏÓÐÎÊÌâ,ÕâÖ÷
			ÒªÊÇCXwinµÄÎÊÌâ,²»ÊÇXAµÄÎÊÌâ,´ËģʽÄÚ¶¨
	Òª¸Ä±äÊäÈëģʽ,Ö»Òª°´Ï F12 Õâ¸ö¼ü ,»áÅܳöÒ»¸ö´°×Ó,ÏÔʾÏÖÔÚµÄģʽ
	È»áá°´Ï 0 ,1 ,or 2 Ñ¡Ôñģʽ,´°×ӾͻáÏûʧ,Èç¹û°´Ïµļü²»ÊÇ 0,1,2µÄ»°
	ÊäÈëģʽ²»¸Ä±ä.

	»·¾³±äÊý XA_MODE ¿ÉÒÔÈ¡´úÔ­À´µÄÄÚ¶¨Ä£Ê½
	¿ÉÄܵÄÖÊÊÇ 0 ,1 , 2 ÈýÖÖ(eg export XA_MODE=1
				or  setenv XA_MODE 1 ) 

	ÏÔʾģʽÓÐÁ½ÖÖ  a ´ò¿ª   b ¹Ø±Õ
	     Ó÷¨ÓëÊäÈëģʽÀàËÆ, ,Ö»Òª°´Ï F12 Õâ¸ö¼ü ,ÔÙ°´Ï a »ò b ¿É¸Ä±ä
	Ô¤ÉèÖµÊÇ´ò¿ª. XA_CVMODE Õâ¸ö»·¾³±äÊý¿ÉÒԸıäÔ¤ÉèÖµ
	¿É½ÓÊܵÄÖµÊÇ a ºÍ b

5 ÊÊÓÃÈíÌå
	  ³É¹¦Õß :  xedit , xpaint , xterm ,color_xterm ,cxterm,rxvt
  		  netscape (3.x 4.x linux ʹÓÃmode 1) , xmftp , chpower ,nedit,
		  xjed ,nedit ,xxgdb ,  xman , xclipboard , xposit+ 
 		(²»´ú±íÅäºÏCXwinÖÐÎÄÏÔʾûÎÊÌâ)

	  ÐèÒªmode 2Õß: textedit , cmdtool ,µÈopenwin³Ìʽ
			xcoral: xcoralÖеÄf_asciiÖÐÓÐÓõ½  isprint( infos -> ch ) 
        	          isprint ºÍ localeÓÐ¹Ø (at least linux and freebsd)
			Èç¹ûÉèºÃµÄ»°¾ÉûÎÊÌâ,Òª²»È»ÓÐÁ½¸ö°ì·¨....
 			1) ¸Ä xcoralµÄsource °Ñisprint remarkµô
			2) ÔÚ XA ÖÐÀ¹½Ø isprint (Õâ¿ÉûÄÇ÷á¼òµ¥ ,ÒòΪ
				ÿ¸ö³Ìʽ¿â¶ÔisprintÓв»Í¬µÄ´¦Àí·½Ê½
				ÓÐЩÓÃdefine µÄ)
	  ÐèÒª mode 0(disable)Õß: crxvt ,ted(ÖÐÎÄ)µÈµÈ±¾À´¾ÍÖ§Ô®xcinµÄÈíÌå

	  ʧ°ÜÕß: 
		   netscape(sunos4 version) ÒòΪ ûÓÐÁª½áµ½ libX11.so
		   staroffice: swrite ʧ°Ü (xa 0.3)
	           xcoral: xcoralÖеÄf_asciiÖÐÓÐÓõ½  isprint( infos -> ch ) 
        	          isprint ºÍ localeÓÐ¹Ø (at least linux and freebsd)
			Èç¹ûÉèºÃµÄ»°¾Í¿ÉÒÔÓÃmode 2ûÎÊÌâ,(ÖÐÎÄÏÔʾµÄ²»´í)
			Òª²»È»ÓÐÁ½¸ö°ì·¨....
	 		1) ¸Ä xcoralµÄsource °Ñisprint remarkµô
			2) ÔÚ XA ÖÐÀ¹½Ø isprint (Õâ¿ÉûÄÇ÷á¼òµ¥,ÒòΪ²»Í¬»·¾³¶Ô
				isprintÓв»Í¬´¦Àí·¨,ÓÐЩ»á°ÑisprintµÈµÈµÄctype 
				×öÒ»¸ö#define)
		   xv:  ºÍxcoralÎÊÌâÓ¦¸ÃÀàËÆ
	´ó¶àÊýµÄÈíÌå ÓÃÔ¤ÉèÖµ ÊäÈëģʽ 2 , ÏÔʾģʽ a(´ò¿ª) ¿ÉÕý³£ÔË×ö
	µ«ÈÔÓв»ÉÙÈíÌåÐèÒªÌض¨Ä£Ê½
	netscape ×îºÃÉè³É  XA_MODE=1 XA_CVMODE=b
	crxvt µÈµÈ±¾À´ÓÐÖ§Ô® xcinµÄÈíÌå ͨ³£±ØÐë XA_MODE=0
	Èç¹û±¾À´¾ÍÓÐÖÐÎÄÏÔʾµÄÈíÌå,×îºÃÒ²  XA_CMODE=b Ê¡µÃÂé·³,
	²»¹ý´ó¶àÊýÓ¦¸ÃûÓÐÌ«´óÎÊÌâ,
	ÓÐCXwin ÖÐÎÄXserverʱ,Ò²¿ÉʹÓà XA_CVMODE=a ´ò¿ª,ÏÔʾЧ¹ûͨ³£»á±ÈÖ»ÓÃ
	CXwin ʱºÃ,(µ«ËÙ¶ÈÓпÉÄܱȽÏÂý)	
	ijЩXA_MODE=1 ¿ÉÓõÄÈíÌå, XA_MODE=1 ʱ±È XA_MODE=2 Êæ·þ, µ«XA_MODE=2
	ÈÔÈ»¿ÉÓÃ
  
6 +CV
	¿ÉÓà  XA_FACEÕâ¸öÖµÀ´Ö¸¶¨ ×ÖÌå ,Èç XA_FACE=kai 
				   XA_FACE=ming 
	µ±È»,ÄãÏà¶ÔÓ³µÄ×ÖÐÎҪװºÃ
	ÏÔʾģʽ²¿·Ý²Î¿¼Ç°Ãæ "4 ÊäÈëģʽºÍÏÔʾģʽ"
	ÆäËû¿É²Î¿¼ README.+CV


7 ÒÑÖª BUG
	Ä¿Ç°,ÒÑÖªµÄbugÈçÏÂ
	xa µÄbug , crtl-win95  Ϊcore dump
	     ³£³£°´Ï ÓÒÏÂ½ÇµÄ 0/Ins   »áÖжϳÌʽ
	     °´Ï F12 ʱ »á²Áµô²¿·ÝÓ©Ä»
	              ¶øÇÒ, ÏÔʾºÜ²î,×ÖÐÎÓÐʱ̫С,ÓÐʱ¿´²»µ½,´ý¸Ä½ø
	+cv bug
	×ÖÐδóСÅжÏÈÔ²»¹»ºÃ,ÓеÄʱºò»áʹµÃÓ©Ä»¿´ÆðÀ´ÔàÔàµÄ,ÓÐʱ»áÓÐÎÊÌâ
	ÖÐÎĶÏ×ÖÎÄ·¨´¦Àí