XSetLineAttributes(3X11)    X Version 11(Release 5)    XSetLineAttributes(3X11)


NAME
      XSetLineAttributes, XSetDashes - GC convenience routines

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

      XSetDashes(display, gc, dash_offset, dash_list, n)
              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 specified
                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 LineDoubleDash.

      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.


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XSetLineAttributes(3X11)    X Version 11(Release 5)    XSetLineAttributes(3X11)


      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 specified for an
                argument, the full range defined by the argument's type is
                accepted.  Any argument defined as a set of alternatives can
                generate this error.

SEE ALSO
      XCreateGC(3X11), XQueryBestSize(3X11), XSetArcMode(3X11),
      XSetClipOrigin(3X11), XSetFillStyle(3X11), XSetFont(3X11),
      XSetState(3X11), XSetTile(3X11)
      Xlib - C Language X Interface







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