Mailman 3 March 2005 - Tkinter-discuss

Tkinter clipboard_get method...
by Martin Franklin April 12, 2005

April 12, 2005

Hi all, I just submitted a patch to python (SF #1063914) that adds the clipboard_get method. As it stands this method will raise a TclError if it is called and the clipboard (the system clipboard) is empty... my question is therefore should I catch this exception in the Tkinter clipboard_get method (and return an empty string / None?) or let the user worry about it? Cheers Martin -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

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Here's a tough one -- dynamic, multi-line XML syntax highlighting
by Jared Cohen April 2, 2005

April 2, 2005

Hiya. My current project is an XML editor using the Tkinter.Text widget. Using the parsing tools from xml.parsers.expat, I've managed to implement a nice system of syntax highlighting when the document is first loaded. However, I want the user to be able to edit the text, and have the highlightling automatically update to conform to whatever is added or deleted. I can easily do this for single-line tags (those that start and end on the same line), because then I can just read in that one line and use the parser to re-highlight it. But for multiple-line tags, like comments or CDATA sections, it's not so easy. The problem is that the exact location where the user inserts/removes text, will determine how the highlighting changes. For example, a comment block is delimeted by  Now, if the user types new text BETWEEN those two tags, nothing changes; the new text gets the existing "comment" highlighting that's already there. If they type new text on the same line as one of the delimeters, but outside their range, it gets no tags at all. But if the new text is INSIDE one of the delimeters themselves (making them no longer syntactically valid), then the whole comment block needs to get re-highlighted. And I don't know how to do that without re-highlighting the WHOLE document all over again. When that happens with every single keystroke, it adds up to a whole lot of highlighting. There's got to be a better way, but I can't think of one. Can anyone help? And by the way, I already know about the xmltools package from logilab, and it might be exactly what I need. However, I'm working on this project at my office, not at home; so I have to rely on the sysadmins to install new packages. And the xmltools package will require a LOT of dependancies, so it doesn't look like it'll be done any time in the near future. :-( P.S. On a totally unrelated note, how do I reply to messages on this board and get them to appear in "nested thread" format? Every time I reply, it always appears as a new top-level thread!

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Re: [Tkinter-discuss] Here's a tough one -- dynamic, multi-line XML syntax highlighting
by Stewart Midwinter March 28, 2005

March 28, 2005

you can get ElementTree from http://effbot.org, Fredrik Lundh's site. He has a full page of documentation on how it works here: http://effbot.org/zone/element.htm He also has a cElementTree module, which is the same thing implemented in C for speed. If you are parsing very large files, that would be worth using instead. I use ElementTree to process configuration information for an app, and display it in a pick-list. S On Mon, 28 Mar 2005 15:52:23 -0500, Jared Cohen <Jared.Cohen(a)noaa.gov> wrote: > Where can I find elementTree? > > -- Stewart Midwinter stewart(a)midwinter.ca stewart.midwinter(a)gmail.com Skype: midtoad

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Re: [Tkinter-discuss] Here's a tough one -- dynamic, multi-line XML syntax highlighting
by Tim Jones March 28, 2005

March 28, 2005

On Mar 28, 2005, at 10:21 AM, Jared Cohen wrote: > Not a bad idea, but real syntax highlighting doesn't work that way. If > I'm programming C++ and I type the word "int", the word gets > highlighted as a keyword the instant I type the "t", not when there's > a pause in my typing. If that were the case, then I could type an > entire paragraph and the highlighting wouldn't change until I was > done. > > Thanks anyway though. Any other ideas? :-) How about a maintained list of keywords as part of your syntax dictionary that effect from the current insertion point forward ( for example)? This way you're not always parsing the entire text on an insertion. And, you might consider only updating the text that is visible at the moment of updating. As another thought, how about auto-completion of the block for the user: i.e.: They type '' on the next line or on a new line at the end of a selected section. I can't think of anything else at the moment. Have you also considered examining what is done in VIM's syntax highlighting? Tim -- Tim Jones tjmac [at] tolisgroup [dot] com > > Tim Jones wrote: > On Mar 28, 2005, at 10:10 AM, Jared Cohen wrote: > > <snip> > > When that happens with every single keystroke, it adds up to a whole > lot of highlighting. There's got to be a better way, but I can't think > of one. Can anyone help? > > > How about using a timer to monitor the delay between keystrokes? > This way, you only update the highlight if the user pauses in their > typing rather than after each keyup. > > Tim > -- > Tim Jones tjmac [at] > tolisgroup [dot] com > >

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GCC Error when building under Irix 6.5
by Tim Jones March 28, 2005

March 28, 2005

HI Folks, I'm working on a port of a Python/Tkinter project to Irix 6.5, but attempts to compile results in a GCC error of a type I've not seen before. Python 2.3.3 by itself builds properly. This turns out to be an issue with the optimization flag. If any of you run into this, start by checking the -O flag in your Python Makefile. If this is a FAQ, sorry but I couldn't find it via Google. Tim -- Tim Jones tjmac [at] tolisgroup [dot] com Example of the GCC error: gcc -fno-strict-aliasing -DNDEBUG -g -O3 -Wall -Wstrict-prototypes -I. -I./Include -DPy_BUILD_CORE -c ./Modules/timemodule.c -o Modules/timemodule.o ./Modules/timemodule.c: In function `floattime': ./Modules/timemodule.c:941: Internal compiler error in `gen_tagged_type_instantiation_die', at dwarf2out.c:9308 Please submit a full bug report. See <URL:http://www.gnu.org/software/gcc/faq.html#bugreport> for instructions. make: *** [Modules/timemodule.o] Error 1 Command returned 2

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Modal dialog behavior
by Michael Lange March 23, 2005

March 23, 2005

Hello list, I encoutered a strange behavior of modal dialog windows on linux, which depends on the window manager I use. I use a message box to notify the user that a process that takes a while has finished. Now when I switch to another workspace while this process is running, the dialog box should ideally pop up on the current workspace; this worked as expected with tk-8.3.3, now with tk-8.4.5 I get the following: XFCE: it still works as expected GNOME: the dialog pops up for a split second on the current workspace and then disppears, when I switch back to the main window's workspace the dialog is there. KDE: dito IceWM: here it is worst; the dialog pops up for a split second and then disappears again, but as soon as I try to switch to the main window's workspace IceWM "automagically" switches back to the workspace where the dialog *should* be. There's no way to get back to the application, except of opening the window list and move the main window to the current workspace (that's most annoying, because Icewm is usually my preferred wm :-( I don't think that it is a IceWm bug, because it worked correctly with tk-8.3.3) Has anyone else encountered similar problems, and is there a way to fix it? Thanks in advance Michael

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Tile
by Martin Franklin March 19, 2005

March 19, 2005

Hi All, I've made a start on wrapping Tile (see previous post + thread on c.l.python) a *very* rough first stab is here:- http://mfranklin.is-a-geek.org/docs/Tile/index.html lots of stubs and NO documentation... plus I can't find the progress bar in the tile package, that said it works for me Martin.

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creating a conformation window that does multiple commands
by Jonathan Stevens March 7, 2005

March 7, 2005

Hello, I'm new to tkinter, so this might be a stupid question, but please bear with me. I have a gui made and when the user goes to file->quit a conformation window will pop up asking if they are sure that they want to quit, if "yes" then the program will quit. What I can not get it how to get the conformation window to be destroyed and the main program will quit with one command? Plus can this be done where, for another command instead of qiuting the program, i say go to another function but the pop up window does close? Any advice will be much appreciated and I thank you all for helping me out

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Re: Another problem -- deselecting individualentriesin Tix HList
by Jared Cohen March 2, 2005

March 2, 2005

That works perfectly! Many thanx!! :-) >might be a bug in the Python binding. does the following "direct" call >work as expected? > > widget.tk.call(widget, "selection", "clear", fromvalue, tovalue) >

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Another problem -- deselecting individual entries in Tix HList
by Jared Cohen March 2, 2005

March 2, 2005

According to the documentation for the Tcl version of Tix, it's possible to use selection_clear() to deselect individual entries, as opposed to the entire selection. The documentation says the following: pathName selection clear ?from? ?to? When no extra arguments are given, deselects all of the list entrie(s) in this HList widget. When only from is given, only the list entry identified by from is deselected. When both from and to are given, deselects all of the list entrie(s) between between from and to, inclusive, without affecting the selection state of entries outside that range. However, I can't for the life of me figure out how to get this functionality in Python. You'd think that you could just pass in "from" and "to" as individual arguments, but you'd be wrong -- the Python version of selection_clear() has the form: selection_clear(self, cnf={}, **kw) . It expects a dictionary and/or a keyword list. And I can't figure out the right syntax for that "from-to" thing. Can anyone help please?

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