xwinclip/-clipboard - Development on no selection stealing version

[J S]

Hi,

Could you help me out please? I'm not too familiar with using the XFree CVS. 
Do I need to check out all the XFree code to compile the test code below? I 
tried:

cvs checkout -A xc

but that is taking a really long tim to download so not sure if I'm on the 
right track here.
I also tried :

cvs checkout -rEXPR1 XFIXES_BRANCH

but that didn't work.

Thanks for any help.

JS.

>
>I committed an XFIXES_BRANCH branch to CVS on SourceForge.  Follow the 
>instructions from David's email in this thread if you don't know how to 
>checkout a branch.
>
>I hope I got all the correct files checked in... I won't be back online 
>until Sunday evening.
>
>Harold
>
>Harold L Hunt II wrote:
>>I have been working with the code for Keith Packard's XFIXES extension.  
>>The XFIXES extension includes a new hook in Xserver/dix/dispatch.c that 
>>allows functions within the Xserver (such as the XFIXES xtension) to 
>>register for a callback when a selection's ownership changes, among other 
>>things.
>>
>>The best documentation I can find for the selection portion of XFIXES is 
>>Owen Taylor's writeup on a RedHat list that doesn't seem to have a public 
>>archive anymore.  Google has a cache; both URLs are below...
>>
>>https://listman.redhat.com/pipermail/xdg-list/2002-November/000937.html
>>
>>http://216.239.53.100/search?q=cache:4osKtTvNNhcJ:https://listman.redhat.com/pipermail/xdg-list/2002-November/000937.html+XFixesSelectSelectionInput&hl=en&ie=UTF-8
>>
>>
>>
>>In any case, I reincluded the XFIXES extension in my local tree from 
>>SourceForge.  I built the extension and modified the -clipboard module to 
>>register for messages from the XFIXES extension related to ownership 
>>changes of XA_PRIMARY.
>>
>>The ownership notifications work just fine, and I am able to copy text 
>>from X to Windows repeatedly without having to transfer ownership of 
>>XA_PRIMARY to the clipboard manager (the -clipboard module).
>>
>>The remaining problem is that I modified the Win32 message loop in the 
>>-clipboard module to add itself to the clipboard chain and to call 
>>XSetSelectionOwner when something comes through the Windows clipboard. 
>>This immediately resulted in an infinite loop, as my X event handling for 
>>a selection ownership change calls XConvertSelection, which ends up 
>>sending a SelectionNotify event back to the -clipboard module.  The 
>>-clipboard module copies the text from the X clipboard to the Windows 
>>clipboard on a SelectionNofity event.  Thus, the text makes a round-trip 
>>from the Windows clipboard, to the X clipboard, back to the Windows 
>>clipboard, ad nauseam.
>>
>>I added a little break-out in the selection ownership change processing 
>>that prevents XSetSelectionOwner from being called if the current owner of 
>>the selection is the clipboard manager window.  This stops the infinite 
>>looping, but it causes a problem very similar to the original xwinclip 
>>problem: the X selection is immediately unhighlighted.
>>
>>So, my questions are:
>>
>>1) Does anyone feel like helping on this?  Got any ideas right off the 
>>bat?
>>
>>2) What would be the best way for me to share the code with other 
>>developers?  I don't want to commit the XFIXES stuff to our SourceForge 
>>tree's HEAD, but could I use another branch?  If so, please give me some 
>>instructions for what to do... I haven't got time to study CVS all day.
>>
>>
>>I am pleased with my current progress point.  This version that is 
>>dependent upon a stripped-down XFIXES extension will represent about a 40% 
>>completion point in new clipboard integration support that doesn't steal 
>>selection ownership.  The remaining work to be done could include removing 
>>the clipboard manager client altogether, removing any dependency on XFIXES 
>>and using only the internal hooking interface, etc.
>>
>>Please postpone any debate on those remaining steps until the current 
>>programming actually works.  There will be no point to debate the merits 
>>of steps 5, 6, and 7 unless we can actually get step 4 to do what we 
>>intend.
>>
>>
>>Harold
>

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