Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!apctrc!zjmw0a
From: zjmw0a@apctrc.trc.amoco.com (Joe M. Wade)
Newsgroups: comp.windows.x
Subject: Problem with XDrawLines
Keywords: Xlib XDrawLines
Message-ID: <918@apctrc.UUCP>
Date: 13 Jun 89 22:12:35 GMT
Sender: news@apctrc.UUCP
Reply-To: zjmw0a@apctrc.trc.amoco.com (Joe M. Wade)
Distribution: usa
Organization: Amoco Production Company, Tulsa Research Center
Lines: 21

I have uncovered what appears to be a bug in XDrawLines. Hopefully this
has not been discussed before. If I pass XDrawLines a set of points where 
there is a duplicate point, the line is never drawn. An example set of 
points I used is:
     xypoint[0].x = 150; xypoint[0].y = 150;
     xypoint[1].x = 150; xypoint[1].y = 150;
     xypoint[2].x = 350; xypoint[2].y = 150;
     xypoint[3].x = 350; xypoint[3].y = 350;
     xypoint[4].x = 150; xypoint[4].y = 350;
     xypoint[5].x = 150; xypoint[5].y = 150;

A call of XDrawLines(display,window,gc,xypoint,6,CoordModeOrigin) results in 
no line being drawn, whereas  XDrawLines(display,window,gc,&xypoint[1],5,
CoordModeOrigin) will get it. Is there something I can specify in the gc to 
get around this? Is this a known bug? Pertinent information is ( Sun 3/60,
OS4.0, X11R3) Thanks.

****************************************************************
*  Joe M. Wade                                                 *
*  Amoco Research Center                                       *
*  Tulsa, OK                                                   *