Path: utzoo!attcan!uunet!ncrlnk!ncrcae!hubcap!gatech!uflorida!ukma!tut.cis.ohio-state.edu!bloom-beacon!bu-cs!dartvax!maxlin!quinn
From: quinn@maxlin.dartmouth.edu (Jerry Quinn)
Newsgroups: comp.windows.x
Subject: HELP!!!
Summary: X timing troubles?
Message-ID: <10862@dartvax.Dartmouth.EDU>
Date: 11 Nov 88 17:51:22 GMT
Sender: news@dartvax.Dartmouth.EDU
Reply-To: quinn@sunapee (Jerry Quinn)
Organization: Dartmouth College
Lines: 48


I have been trying to get my own colormaps to work with X11R3. This is
the section of code that is doing this : 

Display    *dpy;        /* X server connection */
Window      win;        /* Window ID */
GC          gc;     /* GC to draw with */
Colormap colors;
XColor color;
  /**************  Colormap Section ******************************/

  colors = XCreateColormap(dpy,win,vs,AllocAll);
  for (i=0; i < 256; i++) {
    color.pixel = i;
    color.red = color.green = color.blue = i<<8;
    color.flags = (DoRed | DoGreen | DoBlue);
    XStoreColor(dpy,colors,&color);
  }
  XInstallColormap(dpy,colors); 

  gcv.foreground = 128;
  gcv.background = 200;
  gc = XCreateGC(dpy, win, (GCForeground | GCBackground), &gcv); 

  XMapWindow(dpy,win);
/******** draw a colorbar ***********/
  for (ij=0; ij < 256; ij++) {
    gcv.foreground = ij;
    XChangeGC(dpy, gc, (GCForeground), &gcv);
    XFillRectangle(dpy,win,gc,83+ij*2,43,2,10);
  }
   XFlush(dpy);


This creates a grayscale map on my color SUN-3.  The last part puts up
a colorbar of the whole colormap.  Or rather it should.

This is the problem: If I run the program, it puts up my window, the
associated widgets and such, but doesn't draw the colorbar.  If I step
through a few lines at a time in the debugger, the colorbar gets
drawn.  I have no ideas on how to fix this.  (The whole program window
consists of widgets and one normal drawing window).

please reply either to this group or e-mail me.

thanks in advance,
jerry quinn
quinn@sunapee.dartmouth.edu