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From: t...@hp835.mitek.com (Tom Kimball)
Newsgroups: comp.windows.open-look,comp.windows.x
Subject: Programming XLIB clients to do OpenLook copy/paste.
Summary: OpenLook does not send SelectionClear event.
Message-ID: <1991Sep17.161527.17240@mips.mitek.com>
Date: 17 Sep 91 16:15:27 GMT
Sender: n...@mips.mitek.com (USENET Administrator)
Organization: OpenConnect Systems
Lines: 68
Does anyone know how to program XLIB applications to allow
copy/paste functionaliy with OpenLook applications, specifically,
Sun OpenWindows 2.0 applications such as SHELLTOOL?
My situation is this: I have an application using raw XLIB calls
that handles copy/paste well with other X applications such as XTERM.
I would like to extend the copy/paste functionality to work with
OpenLook programs such as the OpenWindows SHELLTOOL, CMDTOOL, and
TEXTEDIT clients (which use the XVIEW toolkit).
The major changes I have made to my XLIB program to add OpenLook
copy/paste functionality so far are these:
1. Used the CLIPBOARD selection rather than the PRIMARY selection.
2. Added support for (target == XA_LENGTH) for SelectionRequest
Events.
Here is where the big problem occurs:
My XLIB application is the owner of the CLIPBOARD selection.
The SHELLTOOL user copies text into CLIPBOARD and thus SHELLTOOL wants
to become the new owner. SHELLTOOL does not send my application a
SelectionClear event, but instead seems to create a new CLIPBOARD
atom and uses that. At this point things become strange. Other
non-OpenLook applications such as XTERM that request the CLIPBOARD
contents get it from my XLIB appliction. But, OpenWindows applications
that paste the CLIPBOARD get the text from the SHELLTOOL that
created a new CLIPBOARD.
This problem is not specific to my application but I believe a
general one. For those who want to duplicate this problem using
only SHELLTOOL and XTERM here are instructions.
--------------
1. Put the following in your .Xdefaults file to allow XTERM to use
the OpenWindows copy and paste keys to copy and paste text into
the CLIPBOARD.
*VT100.Translations: #override \
<Key>L6: select-end(CLIPBOARD)\n\
<Key>L8: insert-selection(CLIPBOARD)
2. Bring up SHELLTOOL (or other OpenLook application) and XTERM.
3. Go to XTERM. Hold down left mouse button and drag mouse
over text.
4. Press L6 key to add selected text to CLIPBOARD.
Release left mouse button.
5. If you like, you can now paste this text into SHELLTOOL
or XTERM with the L8 key.
6. Repeat 3 and 4 for SHELLTOOL.
7. Now, if you go to XTERM and paste with the L8 button, you
get the text selected in XTERM, not SHELLTOOL. If you go
to SHELLTOOL and paste, however, you get the text selected
in SHELLTOOL. i.e., there are now two CLIPBOARD selections.
--------------
Does anyone know how to program an XLIB application to handle
OpenLook copy/paste? In particular, what XLIB events does OpenLook
generate instead of SelectionClear when it wants ownership of the
CLIPBOARD? Thanks in advance for any replies.
--
Tom Kimball t...@hp835.mitek.com
OpenConnect Systems (214)308-0497
Carrollton, TX 75006
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From: h...@luke.atdiv.lanl.GOV (Jeff Hill)
Newsgroups: comp.windows.x
Subject: Re: Programming XLIB clients to do OpenLook copy/paste.
Message-ID: <9109182130.AA28839@luke.atdiv.lanl.gov>
Date: 18 Sep 91 21:30:58 GMT
Sender: dae...@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 40
> Does anyone know how to program XLIB applications to allow
> copy/paste functionaliy with OpenLook applications, specifically,
> Sun OpenWindows 2.0 applications such as SHELLTOOL?
I am also having similar problems. Here is a copy of a message I
sent out to xpert awhile back with no response.
Jeff
------------ snip --------------- snip ---------------------
To: xp...@expo.lcs.mit.edu
Subject: does xview communicate with other types of X clients
Cc: sun...@Lanl.GOV
Status: RO
I am writing a graphics editor which does not use the xview
toolkit. This application allows cutting, copying, and pasting
via the Xlib selection mechanism described in the ICCCM. I can currently
supply the display list elements in the "PRIMARY" selection in either
a binary or ASCII form to any client which requests the selection.
Problems occur however when trying to interoperate with xview clients.
xview clients appear to ask for conversion to other target types which are
not described in the ICCCM. ie target atoms:
`_SUN_SELN_FIRST'
`_SUN_SELN_LAST'
`_SUN_SELN_DO_FUNCTION'
Does anyone know where the xview selection interface is documented?
I tried O'Reilly book 7 chapter 18 and this seemed to be a xview
programmer's reference and not the interclient communication xview
reference which I am seeking. Has anyone writing a non xview client
attempted to communicate with an xview client via the ICCCM selection
mechanism? thanks in advance.
Jeff
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mips.mitek.com!hp835.mitek.com!tk
From: t...@hp835.mitek.com (Tom Kimball)
Newsgroups: comp.windows.open-look,comp.windows.x
Subject: Re: Programming XLIB clients to do OpenLook copy/paste.
Summary: Solution
Message-ID: <1991Sep19.203521.13987@mips.mitek.com>
Date: 19 Sep 91 20:35:21 GMT
References: <1991Sep17.161527.17240@mips.mitek.com>
Sender: n...@mips.mitek.com (USENET Administrator)
Organization: OpenConnect Systems
Lines: 81
In article <1991Sep17.161527.17...@mips.mitek.com> t...@hp835.mitek.com
(Tom Kimball) writes:
>
>Does anyone know how to program XLIB applications to allow
>copy/paste functionaliy with OpenLook applications, specifically,
>Sun OpenWindows 2.0 applications such as SHELLTOOL?
>
Although I have not received any replies thus far (except me toos),
I did figure this out myself with the help of the (very handy)
xscope program. It would be nice to find this kind of thing
documented somewhere, though. Does documentation for this even
exist anywhere?
When the OpenWindows client wants control of the CLIPBOARD
that your client owns, instead of sending you a SelectionClear
event it sends you a SelectionRequest event with the target atom
"_SUN_SELN_YIELD". You are supposed to send it back a value
of 1 (True?) and give up control of the CLIPBOARD. I presume
that it is "asking permission" to receive control of the CLIPBOARD.
If is does not receive a yes (1) reply (or any reply), it
simply creates a new CLIPBOARD atom (forgot what the name is) and
uses that. Don't know how other OpenWindows clients know to
use the new CLIPBOARD instead of the real CLIPBOARD. All this
seems like a clever system but of course does not follow the
X standard and therefore blows away compatibility with most
X clients.
The name of the target atom "_SUN ..." makes me believe this
convention is specific to OpenWindows or perhaps XVIEW rather
than an OpenLook standard as I assumed earlier. Of course, the
only way to get this to work with XTERM is to patch the XTERM source.
For reference purposes, I have included below the diffs to the
xselection.c program written by Richard Hesketh and available on
uunet that will allow the program to work with OpenWindows clients.
------------------------------------------------------------
385a386,424
> Atom XA_YIELD =
> XInternAtom(dpy, "_SUN_SELN_YIELD", True);
>
>
> if (ptr_event->xselectionrequest.target == XA_YIELD) {
> unsigned long yield = 1;
>
> /* yield the selection to OpenWindows client */
> XSetSelectionOwner(ptr_event->xselectionrequest.display,
> ptr_event->xselectionrequest.selection, None,CurrentTime);
>
> XChangeProperty(ptr_event->xselectionrequest.display,
> ptr_event->xselectionrequest.requestor,
> ptr_event->xselectionrequest.property,
> ptr_event->xselectionrequest.target,
> 32, PropModeReplace, &yield,
> 1);
>
> req_event = &(ptr_event->xselectionrequest);
>
> notify_event.type = SelectionNotify;
> notify_event.display = req_event->display;
> notify_event.requestor = req_event->requestor;
> notify_event.selection = req_event->selection;
> notify_event.target = req_event->target;
> notify_event.time = req_event->time;
>
> if (req_event->property == None)
> notify_event.property = req_event->target;
> else
> notify_event.property = req_event->property;
>
> (void)XSendEvent(req_event->display, req_event->requestor,
> False, 0, (XEvent *)¬ify_event);
> XFlush(dpy);
> XCloseDisplay(dpy);
> exit(0);
> }
>
--
Tom Kimball t...@hp835.mitek.com
OpenConnect Systems (214)308-0497
Carrollton, TX 75006
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spdev!texsun!ukcsd.uk.sun.com!jeremy
From: jer...@ukcsd.uk.sun.com (Jeremy Allison - Sun UK - Tech Support)
Newsgroups: comp.windows.open-look,comp.windows.x
Subject: Re: Programming XLIB clients to do OpenLook copy/paste.
Message-ID: <8650@texsun.Central.Sun.COM>
Date: 20 Sep 91 08:32:40 GMT
References: <1991Sep17.161527.17240@mips.mitek.com>
<1991Sep19.203521.13987@mips.mitek.com>
Sender: n...@texsun.Central.Sun.COM
Reply-To: Jeremy.Alli...@UK.Sun.COM
Followup-To: comp.windows.open-look
Organization: Sun Microsystems UK Answer Centre
Lines: 42
In article <1991Sep19.203521.13...@mips.mitek.com>, t...@hp835.mitek.com
(Tom Kimball) writes:
|> In article <1991Sep17.161527.17...@mips.mitek.com> t...@hp835.mitek.com
|> (Tom Kimball) writes:
|> >
|> >Does anyone know how to program XLIB applications to allow
|> >copy/paste functionaliy with OpenLook applications, specifically,
|> >Sun OpenWindows 2.0 applications such as SHELLTOOL?
|> >
|>
....
.... code and non-standard method deleted
....
|> Tom Kimball t...@hp835.mitek.com
|> OpenConnect Systems (214)308-0497
|> Carrollton, TX 75006
I wanted to do the same thing to cut/paste between cmdtool/shelltool and
emacs - but I didn't find this problem. I method I used was the standard
ICCCM - just using the standard CLIPBOARD atom and putting the data on
the window as a property. It worked just find doing copy/paste operations.
I never even heard of this _SUN_SELN_YIELD atom.
Also to do copy/paste between cmd/shelltools and xterms I just modify
the VT100 widget translation table as shown.
XTerm*VT100*Translations: #override\n\
Shift <KeyPress> Select:select-cursor-start() select-cursor-end(CLIPBOARD, CUT_BUFFER0, PRIMARY)\n\
~Ctrl ~Meta <Btn1Down>: select-start() \n\
~Ctrl ~Meta <Btn2Down>: start-extend()\n\
~Ctrl ~Meta <Btn2Motion>: start-extend()\n\
~Ctrl ~Meta <Btn2Up>: select-end(PRIMARY)\n\
~Ctrl ~Meta <Btn3Down>: ignore()\n\
~Ctrl ~Meta <Btn3Up>: insert-selection(CLIPBOARD,CUT_BUFFER0,PRIMARY)\n\
<Key>L8: insert-selection(CLIPBOARD,CUT_BUFFER0,PRIMARY)\n\
<Key>L6: select-extend() select-end(CLIPBOARD, CUT_BUFFER0, PRIMARY)
Both of these work fine for me.
-----------------------------------------------------------------
Jeremy Allison.
Sun UK Hotline.
-----------------------------------------------------------------
Sun don't speak for me - I don't speak for Sun.
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