hpux man page for xsetdashes

XSetDashes()															      XSetDashes()

Name
  XSetDashes - set a pattern of line dashes in a graphics context.

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

Arguments
  display   Specifies a connection to an X server; returned from XOpenDisplay().

  gc	    Specifies the graphics context.

  dash_offset
	    Specifies the phase of the pattern for the dashed line style.

  dash_list Specifies the dash list for the dashed line style.	An odd-length list is equivalent to the same list concatenated with itself to
	    produce an even-length list.

  n	    Specifies the length of the dash list argument.

Description
  XSetDashes() sets the dashes component of a GC.  The initial and alternating elements of the dash_list argument are the dashes, the  others
  are  the  gaps.   All of the elements must be non-zero, with lengths measured in pixels.  The dash_offset argument defines the phase of the
  pattern, specifying how many pixels into the dash_list the pattern should actually begin in the line drawn by the request.

  n specifies the length of dash_list.	An odd value for n is interpreted as specifying the dash_list concatenated  with  itself  to  produce
  twice as long a list.

  Ideally,  a dash length is measured along the slope of the line, but server implementors are only required to match this ideal for horizon-
  tal 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 315 and 225 degrees from the x
  axis.  For all other lines, the major axis is the y axis.

  See Volume One, Chapter 5, The Graphics Context, for further information.

Errors
  BadAlloc

  BadGC

  BadValue  No values in dash_list.
	    Element in dash_list is 0.

See Also
  XDefaultGC(), XChangeGC(), XCopyGC(), XCreateGC(), XFreeGC(), XGContextFromGC(), XSetArcMode(), XSetBackground(), XSetClipMask(),  XSetCli-
  pOrigin(),  XSetClipRectangles(),  XSetFillRule(),  XSetFillStyle(), XSetForeground(), XSetFunction(), XSetGraphicsExposures(), XSetLineAt-
  tributes(), XSetPlaneMask(), XSetState(), XSetStipple(), XSetSubwindowMode(), XSetTSOrigin().

Xlib - Graphics Context 													      XSetDashes()