From rms@gnu.ai.mit.edu Fri Apr 25 15:19:49 1997 X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] [nil "Fri" "25" "April" "1997" "18:19:30" "-0400" "Richard Stallman" "rms@gnu.ai.mit.edu" nil "43" "[md5i@schenley.com: Popup menu implementation & mouse events]" "^From:" nil nil "4" nil nil nil nil] nil) Received: from psilocin.gnu.ai.mit.edu (psilocin.gnu.ai.mit.edu [128.52.46.62]) by june.cs.washington.edu (8.8.5+CS/7.2ju) with SMTP id PAA21870 for ; Fri, 25 Apr 1997 15:19:47 -0700 Received: by psilocin.gnu.ai.mit.edu (8.6.12/8.6.12GNU) id SAA07705; Fri, 25 Apr 1997 18:19:30 -0400 Message-Id: <199704252219.SAA07705@psilocin.gnu.ai.mit.edu> From: Richard Stallman To: voelker@cs.washington.edu, andrewi@harlequin.co.uk Subject: [md5i@schenley.com: Popup menu implementation & mouse events] Date: Fri, 25 Apr 1997 18:19:30 -0400 Could you please do the right thing? ------- Start of forwarded message ------- Sender: "Michael Welsh Duggan" Newsgroups: gnu.emacs.help Subject: Popup menu implementation & mouse events Cc: Richard Stallman Mail-Copies-To: md5i@schenley.com From: "Michael Welsh Duggan" Date: 25 Apr 1997 09:09:36 -0400 Organization: Schenley Park Research, Inc. Lines: 23 X-Newsreader: Gnus v5.4.33/Emacs 19.34 Posted-To: gnu.emacs.help To: rms@gnu.ai.mit.edu The following message is a courtesy copy of an article that has been posted as well. I am working on the popup menu code for the NT version of Gnu Emacs, and I need to know what should happen in certain cases. 1) A menu is set up to execute on a specific mouse-down event. A click for that button/modifier combination is generated. As the menu was created by the mouse-down, should the click event go through? 2) A menu is set up as in 1. If a user clicks and holds, should the menu pop up and allow them to select an entry by releasing the mouse button on a menu entry, or should the menu wait for a seperate mouse-down? Does it make a difference if this can only be implemented on the right and left buttons (not the middle)? 3) If the answer for 2 is the first option, what events should be seen by emacs? 4) Keeping in mind that way I am implementing popup menus is aplication modal, should emacs recieve any mouse-move events generated during menu selection? - -- Michael Duggan (md5i@schenley.com) ------- End of forwarded message ------- From rms@gnu.ai.mit.edu Fri Apr 25 15:40:39 1997 X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] [nil "Fri" "25" "April" "1997" "18:28:01" "-0400" "Richard Stallman" "rms@gnu.ai.mit.edu" nil "31" "Re: Popup menu implementation & mouse events" "^From:" nil nil "4" nil nil nil nil] nil) Received: from psilocin.gnu.ai.mit.edu (psilocin.gnu.ai.mit.edu [128.52.46.62]) by june.cs.washington.edu (8.8.5+CS/7.2ju) with SMTP id PAA22557 for ; Fri, 25 Apr 1997 15:29:25 -0700 Received: by psilocin.gnu.ai.mit.edu (8.6.12/8.6.12GNU) id SAA07746; Fri, 25 Apr 1997 18:28:01 -0400 Message-Id: <199704252228.SAA07746@psilocin.gnu.ai.mit.edu> In-reply-to: (md5i@schenley.com) References: From: Richard Stallman To: md5i@schenley.com cc: voelker@cs.washington.edu, andrewi@harlequin.co.uk Subject: Re: Popup menu implementation & mouse events Date: Fri, 25 Apr 1997 18:28:01 -0400 I don't know whether this behavior fits in with Windows NT. In general, I would say that Emacs should handle menus like a good Windows NT application, to the extent that it can. 1) A menu is set up to execute on a specific mouse-down event. A click for that button/modifier combination is generated. As the menu was created by the mouse-down, should the click event go through? On X Windows, if the user pushes the button and releases it quickly, before the menu appears, then the menu should come up and stay up. When the user pushes the button again, that should select from the menu. 2) A menu is set up as in 1. If a user clicks and holds, should the menu pop up and allow them to select an entry by releasing the mouse button on a menu entry, On X Windows, it does. or should the menu wait for a seperate mouse-down? Does it make a difference if this can only be implemented on the right and left buttons (not the middle)? 3) If the answer for 2 is the first option, what events should be seen by emacs? 4) Keeping in mind that way I am implementing popup menus is aplication modal, should emacs recieve any mouse-move events generated during menu selection? No. From md5i@schenley.com Sat May 3 05:37:49 1997 X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] [nil "" " 3" "May" "1997" "08:36:43" "-0400" "Michael Welsh Duggan" "md5i@schenley.com" nil "56" "Re: Popup menu implementation & mouse events" "^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 FAA21740 for ; Sat, 3 May 1997 05:37:48 -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 IAA13240 for ; Sat, 3 May 1997 08:37:48 -0400 (EDT) Received: by maru.schenley.com from localhost (router,SLMAILNT V2.2); Sat, 03 May 1997 08:36:45 EDT Received: by maru.schenley.com from maru.schenley.com (127.0.0.1::mail daemon; unverified,SLMAILNT V2.2); Sat, 03 May 1997 08:36:45 EDT References: <199704252228.SAA07746@psilocin.gnu.ai.mit.edu> In-Reply-To: Richard Stallman's message of Fri, 25 Apr 1997 18:28:01 -0400 Message-ID: Lines: 56 X-Mailer: Gnus v5.4.33/Emacs 19.34 From: "Michael Welsh Duggan" Sender: "Michael Welsh Duggan" To: Richard Stallman Cc: "Michael Welsh Duggan" , voelker@cs.washington.edu, andrewi@harlequin.co.uk Subject: Re: Popup menu implementation & mouse events Date: 03 May 1997 08:36:43 -0400 Richard Stallman writes: > I don't know whether this behavior fits in with Windows NT. In > general, I would say that Emacs should handle menus like a good > Windows NT application, to the extent that it can. > > 1) A menu is set up to execute on a specific mouse-down event. A > click for that button/modifier combination is generated. As the menu > was created by the mouse-down, should the click event go through? > > On X Windows, if the user pushes the button and releases it quickly, > before the menu appears, then the menu should come up and stay up. > When the user pushes the button again, that should select from the > menu. Okay, one last question: In X Windows, in the case you have described in the preceding paragraph, should both the mouse down and the mouse up event be returned by kbd_buffer_get_event? If so, where does the mouse-up event get caught? Actually, rereading the previous paragraph makes me realize that an explanation of what I am trying to do is in order. Example and explanation: mouse.el, which is dumped into the standard Emacs distribution, maps the keybinding C-down-mouse-1 to the function mouse-buffer-menu. Clicking the first mouse button while holding down the shift key causes two events to be inserted into the keyboard buffer, a button down event and a button up event. The button down event translates into the Emacs event C-down-mouse-1, which executes the function mouse-buffer-menu. Ah, but here comes the questionable part. There is still a mouse down event in the buffer, and when mouse-buffer-menu has completed, it translates into the Emacs event C-mouse-1. This has no binding and therefore ends up calling bitch_at_user, causeing a beep. Now, I never remember this happening when I used the X Windows version of Emacs, so this event must be getting eaten somewhere. My question is this: Where should it be eaten? Should the button up event never have made it into the keyboard buffer, or should it be trapped and eaten later in the function chain? I would also like to leave you with one last question: Was I correct in sending this question to you (and the above CC'd), or was there a more appropriate forum in which to ask this question? Thanks for your time. -- Michael Duggan (md5i@schenley.com) From rms@gnu.ai.mit.edu Sat May 3 12:05:02 1997 X-VM-v5-Data: ([nil nil nil nil nil nil nil nil nil] [nil "Sat" " 3" "May" "1997" "15:04:39" "-0400" "Richard Stallman" "rms@gnu.ai.mit.edu" nil "7" "Re: Popup menu implementation & mouse events" "^From:" nil nil "5" nil nil nil nil] nil) Received: from psilocin.gnu.ai.mit.edu (psilocin.gnu.ai.mit.edu [128.52.46.62]) by june.cs.washington.edu (8.8.5+CS/7.2ju) with SMTP id MAA23683 for ; Sat, 3 May 1997 12:04:57 -0700 Received: by psilocin.gnu.ai.mit.edu (8.6.12/8.6.12GNU) id PAA00506; Sat, 3 May 1997 15:04:39 -0400 Message-Id: <199705031904.PAA00506@psilocin.gnu.ai.mit.edu> In-reply-to: (md5i@schenley.com) References: <199704252228.SAA07746@psilocin.gnu.ai.mit.edu> From: Richard Stallman To: md5i@schenley.com CC: md5i@schenley.com, voelker@cs.washington.edu, andrewi@harlequin.co.uk Subject: Re: Popup menu implementation & mouse events Date: Sat, 3 May 1997 15:04:39 -0400 In X Windows, in the case you have described in the preceding paragraph, should both the mouse down and the mouse up event be returned by kbd_buffer_get_event? With X, the menus are handled by different code entirely, part of lwlib or some other widget set. So the button events in the menu are never returned by kbd_buffer_get_event at all,