Linux Certif

Toute la documentation sur la certification Linux LPI

XGetWindowProperty.3x

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 XGetWindowProperty, XListProperties, XChangeProperty, XRotateWindowProperties, XDeleteProperty - ¥¦¥£¥ó¥É¥¦¤Î¥×¥í¥Ñ¥Æ¥£¤Î¼èÆÀ¤ÈÊѹ¹¤ò¹Ô¤Ê¤¦

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int XGetWindowProperty(display, w, property, long_offset, long_length, delete, req_type,

                        actual_type_return, actual_format_return, nitems_return, bytes_after_return, 

                        prop_return)

      Display *display;

      Window w;

      Atom property;

      long long_offset, long_length;

      Bool delete;

      Atom req_type; 

      Atom *actual_type_return;

      int *actual_format_return;

      unsigned long *nitems_return;

      unsigned long *bytes_after_return;

      unsigned char **prop_return;

Atom *XListProperties(display, w, num_prop_return)

      Display *display;

      Window w;

      int *num_prop_return; 

XChangeProperty(display, w, property, type, format, mode, data, nelements)

      Display *display;

      Window w;

      Atom property, type;

      int format;

      int mode;

      unsigned char *data;

      int nelements;

XRotateWindowProperties(display, w, properties, num_prop, npositions)

      Display *display;

      Window w;

      Atom properties[];

      int num_prop;

      int npositions;

XDeleteProperty(display, w, property)

      Display *display;

      Window w;

      Atom property;

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actual_format_return

¥×¥í¥Ñ¥Æ¥£¤Î¼ÂºÝ¤Î¥Õ¥©¡¼¥Þ¥Ã¥È¤¬ÊÖ¤µ¤ì¤ë¡£

actual_type_return

¥×¥í¥Ñ¥Æ¥£¤Î¼ÂºÝ¤Î¥¿¥¤¥×¤òÄêµÁ¤¹¤ë¥¢¥È¥à¼±Ê̻Ҥ¬ÊÖ¤µ¤ì¤ë¡£

bytes_after_return

¥×¥í¥Ñ¥Æ¥£¤Î°ìÉô¤À¤±Æɤ߹þ¤ó¤À¾ì¹ç¡¢»Ä¤ê¤Î¥Ð¥¤¥È¿ô¤¬ÊÖ¤µ¤ì¤ë¡£

data

¥×¥í¥Ñ¥Æ¥£¤Î¥Ç¡¼¥¿¤ò»ØÄꤹ¤ë¡£

delete

¥×¥í¥Ñ¥Æ¥£¤òºï½ü¤¹¤ë¤«¤É¤¦¤«·èÄꤹ¤ë¿¿µ¶Ãͤò»ØÄꤹ¤ë¡£

display

X ¥µ¡¼¥Ð¤Ø¤ÎÀܳ¤ò»ØÄꤹ¤ë¡£

format

¥Ç¡¼¥¿¤ò 8¥Ó¥Ã¥È¡¢16¥Ó¥Ã¥È¡¢32¥Ó¥Ã¥È¤¤¤º¤ì¤Îñ°Ì¤Î¥ê¥¹¥È¤È¤ß¤Ê¤¹¤«¤ò »ØÄꤹ¤ë¡£ 8, 16, 32 ¤ò»ØÄê¤Ç¤­¤ë¡£ ¤³¤Î¾ðÊó¤Ë¤è¤ê¡¢X ¥µ¡¼¥Ð¤ÏɬÍפ˱þ¤¸¤Æ¥Ð¥¤¥È¸ò´¹¤òÀµ¤·¤¯¹Ô¤¦¤³¤È¤¬¤Ç¤­ ¤ë¡£ ¥Õ¥©¡¼¥Þ¥Ã¥È¤¬ 16¥Ó¥Ã¥È¤«32¥Ó¥Ã¥È¤Î¾ì¹ç¤Ë¤Ï¡¢ XChangeProperty ¤Î¸Æ¤Ó½Ð¤·¤ÎºÝ¤Ë¤Ï¥Ç¡¼¥¿¤Ø¤Î¥Ý¥¤¥ó¥¿¤ò (unsigned char *) ¤Ë¥­¥ã¥¹¥È¤· ¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£

long_length

¼èÆÀ¤¹¤ë¥Ç¡¼¥¿¤Î32¥Ó¥Ã¥ÈÇܤÇŤµ¤ò»ØÄꤹ¤ë¡£

long_offset

¥Ç¡¼¥¿¤¬¼è¤ê¹þ¤Þ¤ì¤ë¡¢»ØÄꤷ¤¿¥×¥í¥Ñ¥Æ¥£Æâ¤Î¥ª¥Õ¥»¥Ã¥È(32¥Ó¥Ã¥Èñ°Ì)¤ò »ØÄꤹ¤ë¡£

mode

Áàºî¤Î¥â¡¼¥É¤ò»ØÄꤹ¤ë¡£ PropModeReplace, PropModePrepend, PropModeAppend ¤Î¤¤¤º¤ì¤«¤ò»ØÄê¤Ç¤­¤ë¡£

nelements

»ØÄꤷ¤¿¥Ç¡¼¥¿¥Õ¥©¡¼¥Þ¥Ã¥È¤ÎÍ×ÁÇ¿ô¤ò»ØÄꤹ¤ë¡£

nitems_return

prop_return ¤Ë³ÊǼ¤µ¤ì¤¿ 8¥Ó¥Ã¥È¡¢16¥Ó¥Ã¥È¡¢32¥Ó¥Ã¥È¤Î¥¢¥¤¥Æ¥à¤Î¼ÂºÝ¤Î ¿ô¤¬ÊÖ¤µ¤ì¤ë¡£

num_prop

¥×¥í¥Ñ¥Æ¥£¤ÎÇÛÎó¤ÎŤµ¤ò»ØÄꤹ¤ë¡£

num_prop_return

¥×¥í¥Ñ¥Æ¥£¤ÎÇÛÎó¤ÎŤµ¤¬ÊÖ¤µ¤ì¤ë¡£

npositions

¥í¡¼¥Æ¡¼¥·¥ç¥ó¤ÎÎ̤ò»ØÄꤹ¤ë¡£

prop_return

»ØÄꤷ¤¿¥Õ¥©¡¼¥Þ¥Ã¥È¤Î¥Ç¡¼¥¿¤¬ÊÖ¤µ¤ì¤ë¡£

property

¥×¥í¥Ñ¥Æ¥£Ì¾¤ò»ØÄꤹ¤ë¡£

properties

¥í¡¼¥Æ¡¼¥È¤µ¤»¤ë¥×¥í¥Ñ¥Æ¥£¤ÎÇÛÎó¤ò»ØÄꤹ¤ë¡£

req_type

¥×¥í¥Ñ¥Æ¥£¤Î¥¿¥¤¥×¤ËÂбþ¤¹¤ë¥¢¥È¥à¼±Ê̻Ҥ« AnyPropertyType ¤ò»ØÄꤹ¤ë¡£

type

¥×¥í¥Ñ¥Æ¥£¤Î·¿¤ò»ØÄꤹ¤ë¡£ X ¥µ¡¼¥Ð¤Ï·¿¤Î²ò¼á¤Ï¹Ô¤ï¤Ê¤¤¤¬¡¢¸å¤Ç XGetWindowProperty ¤ò¸Æ¤Ó½Ð¤·¤¿¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ë¤³¤Î·¿¤ò¤½¤Î¤Þ¤ÞÊÖ¤¹¡£

w

¥×¥í¥Ñ¥Æ¥£¤Î¼èÆÀ¡¢Êѹ¹¡¢¥í¡¼¥Æ¡¼¥È¡¢ºï½ü¤ò¹Ô¤¦¥¦¥£¥ó¥É¥¦¤ò»ØÄꤹ¤ë¡£

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*

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*

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»ØÄꤷ¤¿¥×¥í¥Ñ¥Æ¥£¤¬Â¸ºß¤·¡¢¤«¤Ä¡¢°ú¤­¿ô req_type ¤Ë AnyPropertyType ¤ò»ØÄꤹ¤ë¤«»ØÄꤷ¤¿¥¿¥¤¥×¤¬¼ÂºÝ¤Î¥×¥í¥Ñ¥Æ¥£¤È°ìÃפ·¤¿¾ì¹ç¤Ï¡¢ XGetWindowProperty ¤Ï actual_type_return ¤Ë¼ÂºÝ¤Î¥×¥í¥Ñ¥Æ¥£¤Î¥¿¥¤¥×¡¢actual_format_return ¤Ë ¼ÂºÝ¤Î¥×¥í¥Ñ¥Æ¥£¤Î¥Õ¥©¡¼¥Þ¥Ã¥È(·è¤·¤Æ 0 ¤Ë¤Ê¤é¤Ê¤¤)¤òÊÖ¤¹¡£ ¤Þ¤¿¡¢°Ê²¼¤ÇÄêµÁ¤¹¤ëÃͤò bytes_after_return ¤È nitems_return ¤ËÊÖ¤¹¡£

        N = ³ÊǼ¤µ¤ì¤Æ¤¤¤ë¥×¥í¥Ñ¥Æ¥£¤Î¼ÂºÝ¤Î¥Ð¥¤¥ÈĹ

             (¥Õ¥©¡¼¥Þ¥Ã¥È¤¬16¤Þ¤¿¤Ï32¤Î¾ì¹ç¤â´Þ¤à)

        I = 4 * long_offset

        T = N - I

        L = MINIMUM(T, 4 * long_length)

        A = N - (I + L)

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XGetWindowProperty XGetWindowProperty ¤Ï¾ï¤Ë prop_return ¤ËÄɲäÎ1¥Ð¥¤¥È¤ò³ä¤êÅö¤Æ¡¢¤½¤³¤Ë 0 ¤òÀßÄꤹ¤ë¡£ ʸ»ú¤«¤é¤Ê¤ë´Êñ¤Ê¥×¥í¥Ñ¥Æ¥£¤ò¡¢»ÈÍÑÁ°¤ËÊ̤Îʸ»úÎó¤Ë¥³¥Ô¡¼¤¹¤ëɬÍ× ¤¬¤Ê¤¤¤è¤¦¤Ë¤¹¤ë¤¿¤á¤Ç¤¢¤ë¡£

delete ¤¬ True ¤Ç bytes_after_return ¤¬ 0 ¤Ê¤é¤Ð¡¢ XGetWindowProperty ¤Ï¥×¥í¥Ñ¥Æ¥£¤ò¥¦¥£¥ó¥É¥¦¤«¤éºï½ü¤·¡¢¤½¤Î¥¦¥£¥ó¥É¥¦¾å¤Ë PropertyNotify ¥¤¥Ù¥ó¥È¤òÀ¸À®¤¹¤ë¡£

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XGetWindowProperty ¤Ï¥¨¥é¡¼ BadAtom, BadValue, BadWindow ¤òµ¯¤³¤¹¤³¤È¤¬¤¢¤ë¡£

´Ø¿ô XListProperties ¤Ï»ØÄꤵ¤ì¤¿¥¦¥£¥ó¥É¥¦¤ËÂФ·¤ÆÄêµÁ¤µ¤ì¤Æ¤¤¤ë¥¢¥È¥à¥×¥í¥Ñ¥Æ¥£¤ÎÇÛÎó¤Ø¤Î ¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£¥×¥í¥Ñ¥Æ¥£¤¬¸«¤Ä¤«¤é¤Ê¤«¤Ã¤¿¾ì¹ç¤Ë¤Ï NULL ¤òÊÖ¤¹¡£ ¤³¤Î´Ø¿ô¤¬³ä¤êÅö¤Æ¤¿¥á¥â¥ê¤ò²òÊü¤¹¤ë¤Ë¤Ï XFree ¤ò»È¤¦¤³¤È¡£

XListProperties ¤Ï¥¨¥é¡¼ BadWindow ¤òµ¯¤³¤¹¤³¤È¤¬¤¢¤ë¡£

´Ø¿ô XChangeProperty ¤Ï»ØÄꤵ¤ì¤¿¥¦¥£¥ó¥É¥¦¤Î¥×¥í¥Ñ¥Æ¥£¤òÊѹ¹¤·¡¢ ¤½¤Î¥¦¥£¥ó¥É¥¦¾å¤Î PropertyNotify ¥¤¥Ù¥ó¥È¤ò X ¥µ¡¼¥Ð¤ËÀ¸À®¤µ¤»¤ë¡£ XChangeProperty ¤Ï°Ê²¼¤ÎÆ°ºî¤ò¹Ô¤¦¡£

*

°ú¤­¿ô mode ¤¬ PropModeReplace ¤Ê¤é¤Ð¡¢ XChangeProperty ¤Ï°ÊÁ°¤Î¥×¥í¥Ñ¥Æ¥£ÃͤòÇË´þ¤·¡¢¿·¤·¤¤¥Ç¡¼¥¿¤ò³ÊǼ¤¹¤ë¡£

*

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´Ø¿ô XRotateWindowProperties ¤ò»È¤¦¤È¡¢¥¦¥£¥ó¥É¥¦¤Î¥×¥í¥Ñ¥Æ¥£¤ò¥í¡¼¥Æ¡¼¥È¤µ¤»¤ë¤³¤È¤¬¤Ç¤­¤ë¡£¤Þ¤¿¡¢ ¤³¤Î´Ø¿ô¤ÏX ¥µ¡¼¥Ð¤Ë PropertyNotify ¥¤¥Ù¥ó¥È¤òÀ¸À®¤µ¤»¤ë¡£ ¥×¥í¥Ñ¥Æ¥£¤ÎÇÛÎóÆâ¤Î¥×¥í¥Ñ¥Æ¥£Ì¾¤Ë 0 ¤«¤é»Ï¤Þ¤ëÈÖ¹æ¤òÉÕ¤±¡¢¥ê¥¹¥ÈÃæ¤Ë num_prop ¸Ä¤Î¥×¥í¥Ñ¥Æ¥£Ì¾¤¬¤¢¤ë¤â¤Î¤È¤¹¤ë¤È¡¢¥×¥í¥Ñ¥Æ¥£Ì¾ I ¤ËÂбþ¤¹¤ë Ãͤϥץí¥Ñ¥Æ¥£Ì¾ (I + npositions) mod N ¤ËÂбþ¤¹¤ëÃͤȤʤë(I ¤ÎÃÍ¤Ï 0 ¤« N-1 ¤Þ¤Ç)¡£ ¤³¤Î´Ø¿ô¤Î¸ú²Ì¤Ï¡¢¾õÂÖ¤ò¥×¥í¥Ñ¥Æ¥£Ì¾¤Î²¾ÁÛŪ¤Ê¥ê¥ó¥°¤Î¼þ¤ê¤Ç npositions ʬ¤Î°ÌÃÖ¤À¤±¥í¡¼¥Æ¡¼¥È¤µ¤»¤ë¤³¤È¤Ç¤¢¤ë(npositions ¤¬Àµ¤Ê¤é ¤Ð±¦¼þ¤ê¤Ç¡¢Éé¤Ê¤é¤Ðº¸²ó¤ê)¡£ npositions mod N ¤¬ 0 ¤Ç¤Ê¤±¤ì¤Ð¡¢X ¥µ¡¼¥Ð¤Ï ÇÛÎóÃæ¤ËÎóµó¤µ¤ì¤Æ¤¤¤ë½ç¤Ë³Æ¥×¥í¥Ñ¥Æ¥£¤ËÂФ¹¤ë PropertyNotify ¥¤¥Ù¥ó¥È¤òÀ¸À®¤¹¤ë¡£ 1¤Ä¤Î¥¢¥È¥à¤¬¥ê¥¹¥ÈÃæ¤Ë2Åٰʾ帽¤ï¤ì¤¿¾ì¹ç¤È¥¦¥£¥ó¥É¥¦¤ËÂФ·¤Æ¤½¤Î̾Á° ¤Î¥×¥í¥Ñ¥Æ¥£¤¬ÄêµÁ¤µ¤ì¤Æ¤¤¤Ê¤¤¾ì¹ç¤Ë¤Ï¡¢¥¨¥é¡¼ BadMatch ¤È¤Ê¤ë¡£ ¥¨¥é¡¼ BadAtom ¤¢¤ë¤¤¤Ï BadMatch ¤¬µ¯¤­¤¿¾ì¹ç¡¢¥×¥í¥Ñ¥Æ¥£¤ÏÊѹ¹¤µ¤ì¤Ê¤¤¡£

XRotateWindowProperties ¤Ï¥¨¥é¡¼ BadAtom, BadMatch, BadWindow ¤òµ¯¤³¤¹¤³¤È¤¬¤¢¤ë¡£

´Ø¿ô XDeleteProperty ¤Ï»ØÄꤷ¤¿¥×¥í¥Ñ¥Æ¥£¤¬»ØÄꤷ¤¿¥¦¥£¥ó¥É¥¦¤ËÂФ·¤ÆÄêµÁ¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¤Ë¸Â ¤Ã¤Æ¤³¤Î¥×¥í¥Ñ¥Æ¥£¤òºï½ü¤·¡¢¤½¤Î¥¦¥£¥ó¥É¥¦¾å¤Ç¤Î PropertyNotify ¥¤¥Ù¥ó¥È¤ò X ¥µ¡¼¥Ð¤ËÀ¸À®¤µ¤»¤ë¡£

XDeleteProperty ¤Ï¥¨¥é¡¼ BadAtom¡¢ BadWindow ¤òµ¯¤³¤¹¤³¤È¤¬¤¢¤ë¡£

ÊÖ¤êÃÍ

BadAlloc

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BadAtom

°ú¤­¿ô Atom ¤ÎÃͤ¬¡¢ÄêµÁ¤µ¤ì¤Æ¤¤¤ë Atom ¤ò»Ø¤·¤Æ¤¤¤Ê¤¤¡£

BadValue

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BadWindow

°ú¤­¿ô Window ¤ÎÃͤ¬¡¢ÄêµÁ¤µ¤ì¤Æ¤¤¤ë Window ¤ò»Ø¤·¤Æ¤¤¤Ê¤¤¡£

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XFree(3X11), XInternAtom(3X11)
Xlib - C Language X Interface