screen redraw problem

[J S]

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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>>
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>

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