XSetDashes

XSetLineAttributes(3X11)	XLIB FUNCTIONS	     XSetLineAttributes(3X11)



NAME
       XSetLineAttributes, XSetDashes - GC convenience routines

SYNTAX
       int XSetLineAttributes(Display *display, GC gc, unsigned int
	      line_width, int line_style, int cap_style, int join_style);

       int XSetDashes(Display *display, GC gc, int dash_offset, char
	      dash_list[], int n);

ARGUMENTS
       cap_style Specifies the line-style and cap-style you want to set for
		 the specified GC.  You can pass CapNotLast, CapButt,
		 CapRound, or CapProjecting.

       dash_list Specifies the dash-list for the dashed line-style you want
		 to set for the specified GC.

       dash_offset
		 Specifies the phase of the pattern for the dashed line-style
		 you want to set for the specified GC.

       display	 Specifies the connection to the X server.

       gc	 Specifies the GC.

       join_style
		 Specifies the line join-style you want to set for the speci-
		 fied GC.  You can pass JoinMiter, JoinRound, or JoinBevel.

       line_style
		 Specifies the line-style you want to set for the specified
		 GC.  You can pass LineSolid, LineOnOffDash, or LineDou-
		 bleDash.

       line_width
		 Specifies the line-width you want to set for the specified
		 GC.

       n	 Specifies the number of elements in dash_list.

DESCRIPTION
       The XSetLineAttributes function sets the line drawing components in
       the specified GC.

       XSetLineAttributes can generate BadAlloc, BadGC, and BadValue errors.

       The XSetDashes function sets the dash-offset and dash-list attributes
       for dashed line styles in the specified GC.  There must be at least
       one element in the specified dash_list, or a BadValue error results.
       The initial and alternating elements (second, fourth, and so on) of
       the dash_list are the even dashes, and the others are the odd dashes.
       Each element specifies a dash length in pixels.	All of the elements
       must be nonzero, or a BadValue error results.  Specifying an odd-
       length list is equivalent to specifying the same list concatenated
       with itself to produce an even-length list.

       The dash-offset defines the phase of the pattern, specifying how many
       pixels into the dash-list the pattern should actually begin in any
       single graphics request.	 Dashing is continuous through path elements
       combined with a join-style but is reset to the dash-offset between
       each sequence of joined lines.

       The unit of measure for dashes is the same for the ordinary coordinate
       system.	Ideally, a dash length is measured along the slope of the
       line, but implementations are only required to match this ideal for
       horizontal and vertical lines.  Failing the ideal semantics, it is
       suggested that the length be measured along the major axis of the
       line.  The major axis is defined as the x axis for lines drawn at an
       angle of between -45 and +45 degrees or between 135 and 225 degrees
       from the x axis.	 For all other lines, the major axis is the y axis.

       XSetDashes can generate BadAlloc, BadGC, and BadValue errors.

DIAGNOSTICS
       BadAlloc	 The server failed to allocate the requested resource or
		 server memory.

       BadGC	 A value for a GContext argument does not name a defined
		 GContext.

       BadValue	 Some numeric value falls outside the range of values
		 accepted by the request.  Unless a specific range is speci-
		 fied for an argument, the full range defined by the argu-
		 ment’s type is accepted.  Any argument defined as a set of
		 alternatives can generate this error.

SEE ALSO
       XCreateGC(3X11), XQueryBestSize(3X11), XSetArcMode(3X11), XSetClipOri-
       gin(3X11), XSetFillStyle(3X11), XSetFont(3X11), XSetState(3X11), XSet-
       Tile(3X11)
       Xlib - C Language X Interface



						     XSetLineAttributes(3X11)