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XCreateGC, XCopyGC, XChangeGC, XGetGCValues, XFreeGC, XGContextFromGC, XGCValues - ¥°¥é¥Õ¥£¥Ã¥¯¥¹¥³¥ó¥Æ¥¯¥¹¥È¤ÎÀ¸À®¡¦²òÊü´Ø¿ô¤È¡¢¥°¥é¥Õ¥£¥Ã¥¯¥¹¥³¥ó¥Æ¥¯¥¹¥È¹½Â¤ÂÎ

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GC XCreateGC(display, d, valuemask, values)
Display *display;
Drawable d;
unsigned long valuemask;
XGCValues *values;

XCopyGC(display, src, valuemask, dest)
Display *display;
GC src, dest;
unsigned long valuemask;

XChangeGC(display, gc, valuemask, values)
Display *display;
GC gc;
unsigned long valuemask;
XGCValues *values;

Status XGetGCValues(display, gc, valuemask, values_return)
Display *display;
GC gc;
unsigned long valuemask;
XGCValues *values_return;

XFreeGC(display, gc)
Display *display;
GC gc;

GContext XGContextFromGC(gc)
GC gc;

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d

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dest

ÂоݤȤʤë GC ¤ò»ØÄꤹ¤ë¡£

display

X ¥µ¡¼¥Ð¤Ø¤ÎÀܳ¤ò»ØÄꤹ¤ë¡£

gc

GC ¤ò»ØÄꤹ¤ë¡£

src

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valuemask

GC ¤Î¥³¥ó¥Ý¡¼¥Í¥ó¥È¤Î¤¦¤Á¡¢ÀßÄꡦ¥³¥Ô¡¼¡¦Êѹ¹¤µ¤ì¤ë¤â¤Î¡¢¤¢¤ë¤¤¤ÏÃͤ¬ ÊÖ¤µ¤ì¤ë¤â¤Î¤ò»ØÄꤹ¤ë¡£ ¤³¤Î°ú¤­¿ô¤Ï¡¢GC ¥³¥ó¥Ý¡¼¥Í¥ó¥È¤ÎÍ­¸ú¤Ê¥Þ¥¹¥¯¥Ó¥Ã¥È¤Î 0 ¸Ä°Ê¾å¤ËÂФ·¤Æ¡¢ ¥Ó¥Ã¥È¤´¤È¤ÎÏÀÍýϤò¤È¤Ã¤¿¤â¤Î¤Ç¤¢¤ë¡£

values

°ú¤­¿ô valuemask ¤Ç»ØÄꤷ¤¿¥³¥ó¥Ý¡¼¥Í¥ó¥È¤ÎÃͤò»ØÄꤹ¤ë¡£

values_return

»ØÄꤷ¤¿ XGCValues ¹½Â¤ÂÎÆâ¤Î GC Ãͤ¬ÊÖ¤µ¤ì¤ë¡£

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´Ø¿ô XCreateGC ¤Ï¥°¥é¥Õ¥£¥Ã¥¯¥¹¥³¥ó¥Æ¥¯¥¹¥È¤òÀ¸À®¤·¤Æ¡¢GC ¤òÊÖ¤¹¡£ À¸À®¤µ¤ì¤¿ GC ¤Ï»ØÄꤷ¤¿¥É¥í¥¦¥¢¥Ö¥ë¤ÈƱ¤¸¥ë¡¼¥È¥¦¥£¥ó¥É¥¦¡¢¿¼¤µ¤ò»ý¤Ä Ǥ°Õ¤ÎÉÁ²èÂÐ¾Ý¤Î¥É¥í¥¦¥¢¥Ö¥ë¤È¶¦¤ËÍѤ¤¤ë¤³¤È¤¬¤Ç¤­¤ë¡£ ¾¤Î¥É¥í¥¦¥¢¥Ö¥ë¤È¶¦¤Ë»È¤Ã¤¿¾ì¹ç¤Ë¤Ï¡¢¥¨¥é¡¼ BadMatch ¤È¤Ê¤ë¡£

XCreateGC ¤Ï¥¨¥é¡¼ BadAlloc, BadDrawable, BadFont, BadMatch, BadPixmap, BadValue ¤òµ¯¤³¤¹¤³¤È¤¬¤¢¤ë¡£

´Ø¿ô XCopyGC ¤Ï¥³¥Ô¡¼¸µ¤Î GC ¤Î»ØÄꤷ¤¿¥³¥ó¥Ý¡¼¥Í¥ó¥È¤ò¥³¥Ô¡¼Àè¤Î GC ¤Ë¥³¥Ô¡¼¤¹¤ë¡£ ¥³¥Ô¡¼¸µ¤È¥³¥Ô¡¼Àè¤Î GC ¤Ï¡¢¥ë¡¼¥È¥¦¥£¥ó¥É¥¦¤È¿¼¤µ¤¬Æ±¤¸¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê ¤¤¡£¤½¤¦¤Ç¤Ê¤±¤ì¤Ð¡¢¥¨¥é¡¼ BadMatch ¤È¤Ê¤ë¡£ valuemask ¤Ï XCreateGC ¤Î¾ì¹ç¤ÈƱ¤¸¤¯¡¢¤É¤Î¥³¥ó¥Ý¡¼¥Í¥ó¥È¤ò¥³¥Ô¡¼¤¹¤ë¤«¤ò»ØÄꤹ¤ë¡£

XCopyGC ¤Ï¥¨¥é¡¼ BadAlloc, BadGC, BadMatch ¤òµ¯¤³¤¹¤³¤È¤¬¤¢¤ë¡£

´Ø¿ô XChangeGC ¤Ï¡¢»ØÄꤷ¤¿GC¤Î valuemask ¤Ç»ØÄꤷ¤¿¥³¥ó¥Ý¡¼¥Í¥ó¥È¤òÊѹ¹¤¹¤ë¡£ °ú¤­¿ô values ¤Ë¤ÏÀßÄꤹ¤ëÃͤòÍ¿¤¨¤ë¡£ ¤³¤Î´Ø¿ô¤ÎÃͤÈÀ©¸Â¤Ï XCreateGC ¤Î¾ì¹ç¤ÈƱ¤¸¤Ç¤¢¤ë¡£ clip-mask ¤ÎÊѹ¹¤Ï¡¢¤½¤Î¥³¥ó¥Æ¥¯¥¹¥È¤ËÂФ¹¤ë°ÊÁ°¤Î XSetClipRectangles ¤ò¾å½ñ¤­¤¹¤ë¡£ dash-offset ¤ä dash-list ¤ÎÊѹ¹¤Ï¡¢¤½¤Î¥³¥ó¥Æ¥¯¥¹¥È¤ËÂФ¹¤ë°ÊÁ°¤Î XSetDashes ¤ò¾å½ñ¤­¤¹¤ë¡£ ¥³¥ó¥Ý¡¼¥Í¥ó¥È¤¬³Îǧ¡¢Êѹ¹¤µ¤ì¤ë½ç½ø¤Ï¡¢¥µ¡¼¥Ð¤Ë°Í¸¤¹¤ë¡£ ¥¨¥é¡¼¤¬È¯À¸¤·¤¿¾ì¹ç¡¢¥³¥ó¥Ý¡¼¥Í¥ó¥È¤Î°ìÉô¤Ï¤¹¤Ç¤ËÊѹ¹¤µ¤ì¤Æ¤¤¤ë¤«¤â¤· ¤ì¤Ê¤¤¡£

XChangeGC ¤Ï¥¨¥é¡¼ BadAlloc, BadFont, BadGC, BadMatch, BadPixmap, BadValue ¤òµ¯¤³¤¹¤³¤È¤¬¤¢¤ë¡£

´Ø¿ô XGetGCValues ¤Ï¡¢»ØÄꤷ¤¿ GC ¤Î»ØÄꤷ¤¿ valuemask ¤Ç»ØÄꤵ¤ì¤ë¥³¥ó¥Ý¡¼¥Í¥ó¥È¤òÊÖ¤¹¡£ valuemask ¤¬Àµ¤·¤¤ GC ¥Þ¥¹¥¯¥Ó¥Ã¥È¤Î½¸¹ç (GCFunction, GCPlaneMask, GCForeground, GCBackground, GCLineWidth, GCLineStyle, GCCapStyle, GCJoinStyle, GCFillStyle, GCFillRule, GCTile, GCStipple, GCTileStipXOrigin, GCTileStipYOrigin, GCFont, GCSubwindowMode, GCGraphicsExposures, GCClipXOrigin, GCCLipYOrigin, GCDashOffset, GCArcMode) ¤ò´Þ¤ó¤Ç¤ª¤ê¡¢¥¨¥é¡¼¤âµ¯¤­¤Ê¤«¤Ã¤¿¾ì¹ç¤Ë¤Ï¡¢ XGetGCValues ¤Ï°ú¤­¿ô values_return ¤ËÍ׵ᤵ¤ì¤¿¥³¥ó¥Ý¡¼¥Í¥ó¥È¤òÀßÄꤷ¡¢0 ¤Ç¤Ê¤¤ ¥¹¥Æ¡¼¥¿¥¹¤òÊÖ¤¹¡£ ¤½¤¦¤Ç¤Ê¤¤¾ì¹ç¡¢¤³¤Î´Ø¿ô¤Ï¥¹¥Æ¡¼¥¿¥¹¤È¤·¤Æ 0 ¤òÊÖ¤¹¡£ clip-mask ¤È dash-list(valuemask ¤Ç¤Ï¤½¤ì¤¾¤ì GCClipMask ¤È GCDashList ¥Ó¥Ã¥È)¤òÍ׵᤹¤ë¤³¤È¤Ï¤Ç¤­¤Ê¤¤ÅÀ¤ËÃí°Õ¤»¤è¡£ ¤Þ¤¿¡¢¥¯¥é¥¤¥¢¥ó¥È¤¬¥³¥ó¥Ý¡¼¥Í¥ó¥È¤òÌÀ¼¨Åª¤ËÀßÄꤷ¤Ê¤«¤Ã¤¿¾ì¹ç¤Ë¤Ï¡¢ GCFont, GCTile, GCStipple ¤ËÂФ·¤ÆÉÔÀµ¤Ê¥ê¥½¡¼¥¹ID¤¬ÊÖ¤µ¤ì¤ë(3¤Ä¤ÎºÇ¾å°Ì¥Ó¥Ã¥È¤Î¤¦¤Á¤Î1¤Ä°Ê¾å¤¬1 ¤ËÀßÄꤵ¤ì¤ë)ÅÀ¤Ë¤âÃí°Õ¤¹¤ë¤³¤È¡£

´Ø¿ô XFreeGC ¤Ï»ØÄꤷ¤¿ GC ¤òÇË´þ¤·¡¢Âбþ¤¹¤ë¥á¥â¥ê¤ò²òÊü¤¹¤ë¡£

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

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XGCValues ¹½Â¤ÂΤÎÆâÍƤò¼¨¤¹¡£

typedef struct {
	int function;	
	unsigned long plane_mask;	
	unsigned long foreground;	
	unsigned long background;	
	int line_width;	
	int line_style;	
	int cap_style;	
	int join_style;	
	int fill_style;	
	int fill_rule;	
	int arc_mode;	
	Pixmap tile;	
	Pixmap stipple;	
	int ts_x_origin;	
	int ts_y_origin;
	Font font;	
	int subwindow_mode;	
	Bool graphics_exposures;	
	int clip_x_origin;	
	int clip_y_origin;
	Pixmap clip_mask;	
	int dash_offset;	
	char dashes;
} XGCValues;

GC ¤Î function °À­¤Ï¥É¥í¥¦¥¢¥Ö¥ë(ÁàºîÂоÝ)¤Î°ìÉô¤ò¾¤Î¥É¥í¥¦¥¢¥Ö¥ë (Áàºî¸µ)¤Î¥Ó¥Ã¥È¤ò»È¤Ã¤Æ¹¹¿·¤¹¤ë¤È¤­¤ËÍѤ¤¤é¤ì¤ë¡£ GC ¤Î function ¥³¥ó¥Ý¡¼¥Í¥ó¥È¤Ï¡¢¿·¤·¤¤ÁàºîÂоݤΥӥåȤ¬¡¢Áàºî¸µ¤Î ¥Ó¥Ã¥È¤È¸Å¤¤ÁàºîÂоݤΥӥåȤ«¤é¤É¤Î¤è¤¦¤Ë»»½Ð¤µ¤ì¤ë¤«¤òÄêµÁ¤¹¤ë¡£ GXcopy ¤Ï¥«¥é¡¼¥Ç¥£¥¹¥×¥ì¥¤¤ÇÆ°ºî¤¹¤ë¤Î¤Ç°ìÈÌŪ¤Ë¤ÏºÇ¤âÊØÍø¤Ç¤¢¤ë¤¬¡¢ÆÃÊÌ¤Ê ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ç¤Ï¾¤Î´Ø¿ô¤ò»È¤¦¤³¤È¤â¤¢¤ë¡£ Æäˡ¢¥«¥é¡¼¥Ç¥£¥¹¥×¥ì¥¤¤ÎÆÃÄê¤Î¥×¥ì¡¼¥ó¤ò»È¤¦¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¤Ç¤Ï¤½¤¦ ¤Ç¤¢¤ë¡£ 16 ¤Î GC Áàºî´Ø¿ô¤¬ <X11/X.h> ¤ÇÄêµÁ¤µ¤ì¤Æ¤¤¤ë¡£

¥°¥é¥Õ¥£¥Ã¥¯¥¹Áàºî¤Î¿¤¯¤Ï¡¢GC ¤Î¥Ô¥¯¥»¥ëÃͤä¥×¥ì¡¼¥ó¤Ë°Í¸¤¹¤ë¡£ ¥×¥ì¡¼¥ó°À­¤Ï long ·¿¤Ç¡¢¥×¥ì¡¼¥ó¤´¤È¤Ë1¥Ó¥Ã¥È¤¬³ä¤êÅö¤Æ¤é¤ì¤Æ¤ª¤ê¡¢ ÉÁ²èÂоݤΤɤΥץ졼¥ó¤¬Êѹ¹¤µ¤ì¤ë¤«»ØÄꤹ¤ë¡£ ¥â¥Î¥¯¥í¤Î¥Ç¥£¥¹¥×¥ì¥¤¤Ï1¤Ä¤Î¥×¥ì¡¼¥ó¤·¤«»ý¤¿¤º¡¢¥×¥ì¡¼¥ó¥Þ¥¹¥¯¤Î ºÇ²¼°Ì¥Ó¥Ã¥È¤·¤«°ÕÌ£¤ò»ý¤¿¤Ê¤¤¡£ ¥Ç¥£¥¹¥×¥ì¥¤¤Î¥Ï¡¼¥É¥¦¥§¥¢¤Î¥×¥ì¡¼¥ó¤¬Áý¤¨¤ë¤Ë½¾¤Ã¤Æ¡¢¥×¥ì¡¼¥ó¥Þ¥¹¥¯¤Î ¤è¤ê¾å°Ì¤Î¥Ó¥Ã¥È¤¬»È¤ï¤ì¤ë¡£

¥°¥é¥Õ¥£¥Ã¥¯¥¹Áàºî¤Ç¤ÏÁàºî¸µ¤ÈÁàºîÂоݤΥԥ¯¥»¥ë¤¬Í¿¤¨¤é¤ì¤ë¤È¡¢ ¥Ô¥¯¥»¥ë¤ÎÂбþ¤¹¤ë³Æ¥Ó¥Ã¥È¤¬¥Ó¥Ã¥È¤´¤È¤Ë±é»»¤µ¤ì¤Æ¡¢·ë²Ì¤¬ÆÀ¤é¤ì¤ë¡£ ¤Ä¤Þ¤ê¡¢³Æ¥×¥ì¡¼¥ó¤Ë¤ª¤¤¤Æ¥Ö¡¼¥ê¥¢¥óÁàºî¤¬¼Â¹Ô¤µ¤ì¤ë¡£ plane_mask ¤ÏÁàºî¤ò¥×¥ì¡¼¥ó¤Î°ìÉôʬ¤ËÀ©¸Â¤¹¤ë¡£ ¥Þ¥¯¥íÄê¿ô AllPlanes ¤ò»È¤¦¤³¤È¤Ç¡¢¥¹¥¯¥ê¡¼¥ó¤ÎÁ´¤Æ¤Î¥×¥ì¡¼¥ó¤òƱ»þ¤Ë»²¾È¤¹¤ë¤³¤È¤¬¤Ç¤­¤ë¡£ ·ë²Ì¤Ï°Ê²¼¤Î¤è¤¦¤Ë·×»»¤µ¤ì¤ë¡£

((src FUNC dst) AND plane-mask) OR (dst AND (NOT plane-mask))

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[x1-(w*sn/2), y1+(w*cs/2)], [x1+(w*sn/2), y1-(w*cs/2)],
[x2-(w*sn/2), y2+(w*cs/2)], [x2+(w*sn/2), y2-(w*cs/2)]

¤³¤³¤Ç sn ¤ÏÀþ¤Î³ÑÅ٤Υµ¥¤¥ó¤Ç¤¢¤ê¡¢cs ¤ÏÀþ¤Î³ÑÅ٤Υ³¥µ¥¤¥ó¤Ç¤¢¤ë¡£ ¥Ô¥¯¥»¥ë¤ÏÀþ¤Î°ìÉô¤Ç¤¢¤ê¡¢½¾¤Ã¤Æ¥Ô¥¯¥»¥ë¤ÎÃæ¿´¤¬´°Á´¤Ë¥Ð¥¦¥ó¥Ç¥£¥ó¥°¥Ü¥Ã ¥¯¥¹(¤³¤ì¤Ï̵¸Â¤ËºÙ¤¤ÊÕ¤ò»ý¤Ä¤È¹Í¤¨¤ë)¤ÎÆâÉô¤Ë¤¢¤ì¤Ð¡¢¤³¤Î¥Ô¥¯¥»¥ë¤ÏÉÁ ²è¤µ¤ì¤ë¡£ ¥Ô¥¯¥»¥ë¤ÎÃæ¿´¤¬¤Á¤ç¤¦¤É¥Ð¥¦¥ó¥Ç¥£¥ó¥°¥Ü¥Ã¥¯¥¹¤ÎÊդξå¤Ë¤¢¤ë¾ì¹ç¤Ï¡¢¥Ð ¥¦¥ó¥Ç¥£¥ó¥°¥Ü¥Ã¥¯¥¹¤ÎÆâÉô¤¬¥Ô¥¯¥»¥ëÃæ¿´¤Î¤¹¤°±¦(x ¤ÎÁý²ÃÊý¸þ)¤Ë¤¢¤ë»þ ¤Ë¸Â¤ê¡¢¥Ô¥¯¥»¥ë¤¬Àþ¤Î°ìÉô¤È¤Ê¤ë¡£ ¥Ô¥¯¥»¥ë¤ÎÃæ¿´¤¬¿åÊ¿¤ÊÊÕ¾å¤Ë¤¢¤ë¾ì¹ç¤ÏÆÃÊ̤ǡ¢¥Ð¥¦¥ó¥Ç¥£¥ó¥°¥Ü¥Ã¥¯¥¹Æâ Éô¤«¶­³¦¤¬Ãæ¿´¤Î¤¹¤°²¼(y ¤ÎÁý²ÃÊý¸þ)¤Ë¤¢¤ê¡¢¥Ð¥¦¥ó¥Ç¥£¥ó¥°¥Ü¥Ã¥¯¥¹ÆâÉô ¤«¶­³¦¤¬Ãæ¿´¤Î¤¹¤°±¦(x ¤ÎÁý²ÃÊý¸þ)¤Ë¤¢¤ë»þ¤Ë¸Â¤ê¡¢¥Ô¥¯¥»¥ë¤¬Àþ¤Î°ìÉô¤È ¤Ê¤ë¡£

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1.

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2.

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cap-style ¤ä join-style ¤ò¹Íθ¤ËÆþ¤ì¤Ê¤±¤ì¤Ð¡¢[x1,y1] ¤«¤é [x2,y2] ¤Ë ÉÁ¤«¤ì¤ë wide line ¤È [x2,y2] ¤«¤é [x1,y1] ¤ËÉÁ¤«¤ì¤ë wide line ¤Ï¾ï¤Ë Ʊ¤¸¥Ô¥¯¥»¥ë¤òÉÁ²è¤¹¤ë¡£ ¤³¤ì¤Ï thin line ¤Ç¤âÀ®¤êΩ¤Ä¤³¤È¤¬Ë¾¤Þ¤·¤¤¤¬¡¢É¬¿Ü¤Ç¤Ï¤Ê¤¤¡£ line-width ¤¬ 0 ¤ÎÀþ¤È line-width ¤¬ 1 ¤ÎÀþ¤Î¾ì¹ç¤Ç¤Ï¡¢°Û¤Ê¤ë¥Ô¥¯¥»¥ë ¤¬ÉÁ²è¤µ¤ì¤Æ¤â¤è¤¤¡£ ¤³¤ì¤Ë¤è¤ê¡¢¥Ï¡¼¥É¥¦¥§¥¢¤ÇÄ󶡤µ¤ì¤ëÀþ¤ÎÉÁ²èµ¡Ç½¤¬ÍøÍѤǤ­¡¢Àµ³Î¤Ë»ÅÍÍ ¤¬·è¤á¤é¤ì¤Æ¤¤¤ë wide line ¤è¤ê¤º¤Ã¤È®¤¯¼Â¹Ô¤¹¤ë¤³¤È¤¬¤Ç¤­¤ë¡£

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line-style ¤ÏÀþ¤Î¤É¤ÎÉôʬ¤¬ÉÁ²è¤µ¤ì¤ë¤«¤òÄêµÁ¤¹¤ë¡£

cap-style ¤Ïµ°ÀפÎüÅÀ¤¬¤É¤Î¤è¤¦¤ËÉÁ²è¤µ¤ì¤ë¤«ÄêµÁ¤¹¤ë¡£

join-style ¤Ï wide line ¤Î³Ñ¤¬¤É¤Î¤è¤¦¤ËÉÁ²è¤µ¤ì¤ë¤Î¤«¤òÄêµÁ¤¹¤ë¡£

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