Path: utzoo!attcan!uunet!husc6!bloom-beacon!EXPO.LCS.MIT.EDU!keith
From: keith@EXPO.LCS.MIT.EDU (Keith Packard)
Newsgroups: comp.windows.x
Subject: Re: xwanderer
Message-ID: <8811150542.AA26721@EXPO.LCS.MIT.EDU>
Date: 15 Nov 88 05:42:15 GMT
References: <722@sunspot.cme-durer.ARPA>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 30


xwanderer uses colors 0 and 1 for foreground/background as it
simply creates GC's with XCreateGC without specifying the appropriate
colors.  On many displays, colors 0 and 1 are writable, and
frequently not white and black.  On my display, they ended up using
my normal foreground/background colors (sheer coincidence) and I thought
xwanderer was using the resource manager...

This is a trivial fix, simply add code like:

build_pixmaps ()
{
...
+	XGCValues	gcv;
...

+	gcv.foreground = WhitePixel (dpy, DefaultScreen (dpy));
+	gcv.background = BlackPixel (dpy, DefaultScreen (dpy));

	/* build all of the GC's here too! */

!	foogc = XCreateGC (dpy, win, GCForeground|GCBackground, &gcv)

Actually, I've made these and other changes to xwanderer, like
converting the icons into a font, which speeds up the display of
the map quite a bit, while making startup time also faster.  Sort
of a win-win situation.  It would also enable one to create
different font sets for different display resolutions, and do lots
of fun stuff with that.  If there is any interest, I can make the
diffs availible for anonymous ftp...