Re: screen redraw problem

["J S" <vervoom at hotmail dot com>]

Harold,

Many thanks for email. I have created an XFree debug build now and a 
symbolic link from /usr/X11R6_suffix/lib/X11/fonts to 
/usr/X11R6/lib/X11/fonts.

In order to debug this though, what's the best approach?
For example, should I use any flags on the xwin command line? Do you use gdb 
to do the debugging? If so, could you just give me a clue as to where I 
might want to set the breakpoint given the nature of the problem?

Sorry to ask for spoon-feeding on this!! Thanks again though.

JS.


> JS,
>
> Start here:
> http://xfree86.cygwin.com/docs/cg/prog-obtaining-source.html
>
> Then read how to compile:
> http://xfree86.cygwin.com/docs/cg/prog-build-native.html
>
> Notice that towards the bottom of the above section it tells how to do a 
> "Standard Build" and a "Debug Build".  The debug build uses the "makeg" 
> script, so you don't have to edit any Imakefiles or config files.
>
> Finally, read how to move your current X installation safely out of the way 
> before installing your local build:
> http://xfree86.cygwin.com/docs/cg/prog-build-native.html#prog-compiling-install
>
> As an absolute last step, if you created a host.def file that said not to 
> build fonts (look at xf86site.def for an example), then you need to cut and 
> paste C:\cygwin\usr\X11R6_suffix\lib\X11\fonts to 
> C:\cygwin\usr\X11R6\lib\X11\fonts.  Cutting and pasting is an instantaneous 
> operation.  Copying the files would take up to an hour, as there are around 
> 20,000 font files.  Just be sure that you cut and paste that fonts folder 
> into another folder before you delete one of your test installations.  You 
> don't want to end up deleting that folder... you would be in a world of 
> hurt.
>
> Harold
>
> J S wrote:
>
> > Ha ! OK I'll try to be that guy! What's the best way to do this? Recompile 
> > XWin with the -g flag? Is there anything to change in the Makefile? 
> > Haven't done this before so would appreciate any pointers.
> >
> > Thanks a lot.
> >
> >
> >
> > > JS,
> > >
> > > Looks like you have found a generic problem with X or one of the 
> > > libraries you are using.  It is going to take a lot of debugging... you 
> > > are going to have to be that guy.
> > >
> > > Harold
> > >
> > > J S wrote:
> > >
> > > > Is there anymore information I need to add to this post? I would really 
> > > > like to get some help with it. The logs don't seem to be showing 
> > > > anything. I've tried setting different color depths, and screen 
> > > > resolutions but to no avail.
> > > >
> > > > Hi,
> > > >
> > > > I have an application which has some boxes in the window. The window 
> > > > itself
> > > > is scrollable. When I scroll down -  no problem, but when I scroll up 
> > > > the
> > > > boxes turn into long vertical bars. This problem doesn't happen with 
> > > > Exceed,
> > > > but on XFree86 (both Linux XFree86 and Cygwin-XFree) it does.
> > > >
> > > > Can anyone advise me whether this is a bug, or is there some setting I 
> > > > need
> > > > to add? Let me know if you need anymore information.
> > > >
> > > > Thanks for any help.
> > > >
> > > > JS.
> > > >
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