From owner-ntemacs-users@june Thu Dec 5 09:10:24 1996 X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] [nil "" " 5" "December" "1996" "11:19:14" "-0500" "Michael Welsh Duggan" "md5i@schenley.com" nil "42" "Re: Alt-TAB on ntemacs 19.34/Windows 95" "^From:" nil nil "12" nil nil nil nil] nil) Received: from joker.cs.washington.edu (joker.cs.washington.edu [128.95.1.42]) by june.cs.washington.edu (8.8.3+CSE/7.2ju) with SMTP id JAA01981 for ; Thu, 5 Dec 1996 09:10:23 -0800 Received: from june.cs.washington.edu (june.cs.washington.edu [128.95.1.4]) by joker.cs.washington.edu (8.6.12/7.2ws+) with ESMTP id JAA33169 for ; Thu, 5 Dec 1996 09:10:22 -0800 Received: from gate.usaor.net (gate.usaor.net [204.157.146.1]) by june.cs.washington.edu (8.8.3+CSE/7.2ju) with ESMTP id IAA28327 for ; Thu, 5 Dec 1996 08:20:07 -0800 Received: from maru.schenley.com (maru.schenley.com [206.62.188.70]) by gate.usaor.net (8.7.3/8.7.5) with SMTP id LAA06627 for ; Thu, 5 Dec 1996 11:29:12 -0500 (EST) Received: by maru.schenley.com from localhost (router,SLMAILNT V2.2); Thu, 05 Dec 1996 11:19:16 EST Received: by maru.schenley.com from maru.schenley.com (127.0.0.1::mail daemon; unverified,SLMAILNT V2.2); Thu, 05 Dec 1996 11:19:15 EST References: <199612051201.MAA25654@propos.long.harlequin.co.uk> In-Reply-To: Andrew Innes's message of Thu, 5 Dec 1996 12:01:38 GMT Message-ID: Lines: 42 X-Mailer: Gnus v5.2.37/Emacs 19.32 From: "Michael Welsh Duggan" Sender: "Michael Welsh Duggan" To: ntemacs-users@cs.washington.edu Subject: Re: Alt-TAB on ntemacs 19.34/Windows 95 Date: 05 Dec 1996 11:19:14 -0500 Andrew Innes writes: > > On Thu, 5 Dec 1996 10:50:08 +0000, David Aspinall said: > >[Sorry in case of a repeat; I think the previous copy of this got lost] > > > >This key raises a window-selection window, which although useful is not > >what I hoped for. Can we make this key be caught by Emacs so the > >usual completion functions, etc work? > > I don't think so - Alt-TAB and various other keystrokes like it are > intercepted by the system without ever reaching application programs. > > Under Win95, DOS applications running in a DOS box can be allowed to see > them, but (as I understand it) that works by using a low-level mechanism > only applicable to DOS programs running under Win95. I think there is a way to hack this, but I'm not absolutely sure it would work... You should be able to use RegisterHotKey() to declare the Alt-Tab combination a hot key. Then when the combination is pressed, a WM_HOTKEY message is sent. The problem is that this message is pushed to the top of the event queue. Because of this, I anticipate key-ordering problems, even if we translate the command and repost it as a char event. However, someone more knowledgable about the Emacs internals may know a way this can be hacked. The keys that may need to be trapped this way are: Alt+Esc Alt+PrintScreen Alt+Tab Ctrl+Esc PrintScreen Shift+Alt+Tab I am not sure at all about Ctrl+Alt+Del. :-) -- Michael Duggan (md5i@schenley.com) From owner-ntemacs-users@june Tue Dec 3 04:01:35 1996 X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] [nil "Tue" " 3" "December" "1996" "11:09:12" "+0000" "Pat Knight" "pat@ktgroup.co.uk" nil "15" "RE: Alt-TAB" "^From:" nil nil "12" nil nil nil nil] nil) Received: from joker.cs.washington.edu (joker.cs.washington.edu [128.95.1.42]) by june.cs.washington.edu (8.8.3+CSE/7.2ju) with SMTP id EAA10870 for ; Tue, 3 Dec 1996 04:01:35 -0800 Received: from june.cs.washington.edu (june.cs.washington.edu [128.95.1.4]) by joker.cs.washington.edu (8.6.12/7.2ws+) with ESMTP id EAA30731 for ; Tue, 3 Dec 1996 04:01:34 -0800 Received: from tcupboard.ktgroup.co.uk (www.ktgroup.co.uk [194.70.85.1]) by june.cs.washington.edu (8.8.3+CSE/7.2ju) with ESMTP id DAA09635 for ; Tue, 3 Dec 1996 03:09:16 -0800 Received: from lurch.ktgroup.co.uk (lurch.ktgroup.co.uk [194.70.85.4]) by tcupboard.ktgroup.co.uk (8.7.6/8.7.3) with ESMTP id LAA00194; Tue, 3 Dec 1996 11:09:13 GMT Received: from pcpat (pcpat.ktgroup.co.uk [194.70.85.30]) by lurch.ktgroup.co.uk (8.7.6/8.7.3) with SMTP id LAA19011; Tue, 3 Dec 1996 11:09:11 GMT Message-Id: <1.5.4.32.19961203110912.0090e940@vcsmail> X-Sender: pat@vcsmail X-Mailer: Windows Eudora Light Version 1.5.4 (32) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" From: Pat Knight To: Kevin Gallo , David Aspinall , ntemacs-users@cs.washington.edu Subject: RE: Alt-TAB Date: Tue, 03 Dec 1996 11:09:12 +0000 In a message sent at 18:13 02/12/96 -0800, Kevin Gallo wrote that: >No - this is caught by the system and cannot be remapped in anyway (at >least there is no way I have ever seen to change it). This is not even a >feature of the shell but part of the underlying OS. > I don't know if nt-emacs does this, but it is possible to write applications which use ALT-TAB for their own purposes instead of the system default. The application should look for the WM_SYSCHAR message for keystrokes as well as the normal WM_CHAR. The WM_SYSCHAR gives you the messages generated by ALT+key combination. It's then up to the application whether to carry out the standard action or do it's own thing. Cheers, Pat From md5i@schenley.com Mon May 12 06:18:12 1997 X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] [nil "" "12" "May" "1997" "09:17:05" "-0400" "Michael Welsh Duggan" "md5i@schenley.com" nil "13" "Processing captured emacs keys" "^From:" nil nil "5" nil nil nil nil] nil) Received: from gate.usaor.net (gate.usaor.net [204.157.146.1]) by june.cs.washington.edu (8.8.5+CS/7.2ju) with ESMTP id GAA20098 for ; Mon, 12 May 1997 06:18:11 -0700 Received: from maru.schenley.com (maru.schenley.com [206.62.188.70]) by gate.usaor.net (8.8.5/8.8.5) with SMTP id JAA01971 for ; Mon, 12 May 1997 09:18:10 -0400 (EDT) Received: by maru.schenley.com from localhost (router,SLMAILNT V2.2); Mon, 12 May 1997 09:17:07 EDT Received: by maru.schenley.com from maru.schenley.com (127.0.0.1::mail daemon; unverified,SLMAILNT V2.2); Mon, 12 May 1997 09:17:07 EDT References: In-Reply-To: "Michael Welsh Duggan"'s message of 08 May 1997 20:53:55 -0400 Message-ID: Lines: 13 X-Mailer: Gnus v5.4.33/Emacs 19.34 From: "Michael Welsh Duggan" Sender: "Michael Welsh Duggan" To: voelker@cs.washington.edu (Geoff Voelker), andrewi@harlequin.co.uk Cc: "Michael Welsh Duggan" Subject: Processing captured emacs keys Date: 12 May 1997 09:17:05 -0400 I have a version of emacs sitting here on my desk which captures the Alt-Tab key combination without the OS interfering. Due to the way this works (using RegisterHotKey), a function is more appropriate than a variable for turning this processing on and off. What should a function like this look like? Keep in mind that we can trap other key events usually usurped by the OS, such as Ctrl-Esc, and Ctrl-Alt-Del. So we may want a way to turn these on or off individually. -- Michael Duggan (md5i@schenley.com) From andrewi@harlequin.co.uk Mon May 12 08:36:30 1997 X-VM-v5-Data: ([nil nil nil nil t nil nil nil nil] [nil "Mon" "12" "May" "1997" "16:35:35" "+0100" "Andrew Innes" "andrewi@harlequin.co.uk" "<199705121535.QAA17812@propos.long.harlequin.co.uk>" "26" "Re: Processing captured emacs keys" "^From:" nil nil "5" nil nil nil nil] nil) Received: from holly.cam.harlequin.co.uk (holly.cam.harlequin.co.uk [193.128.4.58]) by june.cs.washington.edu (8.8.5+CS/7.2ju) with ESMTP id IAA26719 for ; Mon, 12 May 1997 08:36:27 -0700 Received: from propos.long.harlequin.co.uk (propos.long.harlequin.co.uk [193.128.93.50]) by holly.cam.harlequin.co.uk (8.8.4/8.7.3) with ESMTP id QAA01515; Mon, 12 May 1997 16:36:08 +0100 (BST) Received: from elan.long.harlequin.co.uk (elan.long.harlequin.co.uk [193.128.93.78]) by propos.long.harlequin.co.uk (8.8.4/8.6.12) with SMTP id QAA17812; Mon, 12 May 1997 16:35:35 +0100 (BST) Message-Id: <199705121535.QAA17812@propos.long.harlequin.co.uk> In-reply-to: (md5i@schenley.com) From: Andrew Innes To: md5i@schenley.com CC: voelker@cs.washington.edu Subject: Re: Processing captured emacs keys Date: Mon, 12 May 1997 16:35:35 +0100 (BST) On 12 May 1997 09:17:05 -0400, "Michael Welsh Duggan" said: >I have a version of emacs sitting here on my desk which captures the >Alt-Tab key combination without the OS interfering. Due to the way >this works (using RegisterHotKey), a function is more appropriate than >a variable for turning this processing on and off. What should a >function like this look like? > >Keep in mind that we can trap other key events usually usurped by the >OS, such as Ctrl-Esc, and Ctrl-Alt-Del. So we may want a way to turn >these on or off individually. Yes, I think individual control is necessary. Well, Ctrl-Alt-Del can't be trapped at the application level, but for the others you could presumably write a function analogous to global-set-key that does the necessary work to register special keychords as hot keys (called, say, `register-hot-key'). That is, it would accept a keychord specified in any of the formats supported by global-set-key, perhaps with an optional argument that if non-nil means unregister the keychord. It would do nothing if the keychord was not special. Binding the keychord should still be done by global-set-key or using keymaps etc, as now. AndrewI From md5i@schenley.com Fri May 9 10:06:58 1997 X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] [nil "" " 9" "May" "1997" "13:05:48" "-0400" "Michael Welsh Duggan" "md5i@schenley.com" nil "21" "Alt-Tab processing" "^From:" nil nil "5" nil nil nil nil] nil) Received: from gate.usaor.net (gate.usaor.net [204.157.146.1]) by june.cs.washington.edu (8.8.5+CS/7.2ju) with ESMTP id KAA15273 for ; Fri, 9 May 1997 10:06:57 -0700 Received: from maru.schenley.com (maru.schenley.com [206.62.188.70]) by gate.usaor.net (8.8.5/8.8.5) with SMTP id NAA05680 for ; Fri, 9 May 1997 13:06:53 -0400 (EDT) Received: by maru.schenley.com from localhost (router,SLMAILNT V2.2); Fri, 09 May 1997 13:05:50 EDT Received: by maru.schenley.com from maru.schenley.com (127.0.0.1::mail daemon; unverified,SLMAILNT V2.2); Fri, 09 May 1997 13:05:50 EDT Message-ID: Lines: 21 From: "Michael Welsh Duggan" Sender: "Michael Welsh Duggan" To: voelker@cs.washington.edu, andrewi@harlequin.co.uk Subject: Alt-Tab processing Date: 09 May 1997 13:05:48 -0400 I am afraid that I have been having so much fun hacking Emacs this past week or so, I am looking for excuses to continue doing so. I am considering tackling handling the following keys: Alt+Esc Alt+PrintScreen Alt+Tab Ctrl+Esc PrintScreen Shift+Alt+Tab Ctrl+Alt+Del How should I go about deciding which keys to trap? We want something similar to win32-pass-optional-keys-to-system and win32-pass-alt-to-system, and we don't necessarily want this to be a single switch on _all_ of the above combinations. Suggestions? Or have one of you already handled this? -- Michael Duggan (md5i@schenley.com)