Re: What is intvar? [Python Docs]
On Jan 26, 11:15 am, W. eWatson notval...@sbcglobal.net wrote: I might be repeating myself here, but If anyone has pdf experience, and could provide page numbers and maybe a TOC for some of Lundh's contributions, that would be helpful. Did you try this one? http://effbot.org/tkinterbook/tkinter-index.htm here is the older less detailed version: http://www.pythonware.com/library/tkinter/introduction/ neither are PDF thought. But NMT has a PDF download here: http://infohost.nmt.edu/tcc/help/pubs/tkinter/ -- http://mail.python.org/mailman/listinfo/python-list
Re: What is intvar? [Python Docs]
r wrote: W. eWatson, I contacted the author of New Mexico Techs Introduction to Tkinter a couple of weeks ago. He is going to update the reference material with a few missing widgets and some info on Photo and Bitmap classes. I really love the NMT layout and use it quite often. Fredricks Tkinterbook is more detail but lacking in navigation. I swing back and forth between both sites. Good. Thanks. I think Lundh might have taken his material to book form. I might be repeating myself here, but If anyone has pdf experience, and could provide page numbers and maybe a TOC for some of Lundh's contributions, that would be helpful. -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: What is intvar?
Steve Holden wrote: W. eWatson wrote: W. eWatson wrote: r wrote: here is a good explanation of control vars: http://infohost.nmt.edu/tcc/help/pubs/tkinter/control-variables.html Here are 3 great Tkinter refernces in order: http://infohost.nmt.edu/tcc/help/pubs/tkinter/ http://effbot.org/tkinterbook/ http://www.pythonware.com/library/tkinter/introduction/ Thanks to all for the reference and tips. tkinterbook is easy to follow, but it seems to have been abandoned in 2005. Did it appear in another guise somewhere else? There hasn't been a lot of development on Tkinter in the intervening period. It's a mature system, so there has been no need to update the documentation. regards Steve Unfortunately, the author seems to have stopped mid-stream. I see a fair number of FIXMEs in it. It looks like the New Mexico pdf is a fitting replacement. Perhaps Intro to Tkinter should be scrapped? Another of the author's writings, on PIL, looks good as a pdf, but is missing a TOC. Maybe some pdf knowledgeable person knows how to generate one easily. -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: What is intvar?
W. eWatson, I contacted the author of New Mexico Techs Introduction to Tkinter a couple of weeks ago. He is going to update the reference material with a few missing widgets and some info on Photo and Bitmap classes. I really love the NMT layout and use it quite often. Fredricks Tkinterbook is more detail but lacking in navigation. I swing back and forth between both sites. -- http://mail.python.org/mailman/listinfo/python-list
Re: What is intvar?
W. eWatson wrote: r wrote: here is a good explanation of control vars: http://infohost.nmt.edu/tcc/help/pubs/tkinter/control-variables.html Here are 3 great Tkinter refernces in order: http://infohost.nmt.edu/tcc/help/pubs/tkinter/ http://effbot.org/tkinterbook/ http://www.pythonware.com/library/tkinter/introduction/ Thanks to all for the reference and tips. tkinterbook is easy to follow, but it seems to have been abandoned in 2005. Did it appear in another guise somewhere else? -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: What is intvar?
W. eWatson wrote: W. eWatson wrote: r wrote: here is a good explanation of control vars: http://infohost.nmt.edu/tcc/help/pubs/tkinter/control-variables.html Here are 3 great Tkinter refernces in order: http://infohost.nmt.edu/tcc/help/pubs/tkinter/ http://effbot.org/tkinterbook/ http://www.pythonware.com/library/tkinter/introduction/ Thanks to all for the reference and tips. tkinterbook is easy to follow, but it seems to have been abandoned in 2005. Did it appear in another guise somewhere else? There hasn't been a lot of development on Tkinter in the intervening period. It's a mature system, so there has been no need to update the documentation. regards Steve -- Steve Holden+1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: What is intvar?
r wrote: here is a good explanation of control vars: http://infohost.nmt.edu/tcc/help/pubs/tkinter/control-variables.html Here are 3 great Tkinter refernces in order: http://infohost.nmt.edu/tcc/help/pubs/tkinter/ http://effbot.org/tkinterbook/ http://www.pythonware.com/library/tkinter/introduction/ Thanks to all for the reference and tips. -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
What is intvar?
I'm looking at someone's code in which invar() is used fairly often. Apparently, it's a Tkinter method. Here's a use: def body(self,master): self.title(Display Settings) self.colorVar = IntVar() Radiobutton( master, text=Gray Scale, value=1, variable=self.colorVar).grid(row=0, sticky=W) Radiobutton( master, text=Pseudo Color, value=2, variable=self.colorVar).grid(row=1, sticky=W) ... What is the need for this use? It looks like some sort of initialization for a widget. I've scoured the internet with Google, and have yet to find a simple explanation of what it's used for. -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: What is intvar?
On Thu, Jan 22, 2009 at 6:38 PM, W. eWatson notval...@sbcglobal.net wrote: I'm looking at someone's code in which invar() is used fairly often. Apparently, it's a Tkinter method. Here's a use: def body(self,master): self.title(Display Settings) self.colorVar = IntVar() Radiobutton( master, text=Gray Scale, value=1, variable=self.colorVar).grid(row=0, sticky=W) Radiobutton( master, text=Pseudo Color, value=2, variable=self.colorVar).grid(row=1, sticky=W) ... What is the need for this use? It looks like some sort of initialization for a widget. I've scoured the internet with Google, and have yet to find a simple explanation of what it's used for. Search for IntVar on http://docs.python.org/library/tkinter.html and read the enclosing section. I think it's basically used to propagate changes to the GUI and convert values (in this case, ints) between Python and Tk. Cheers, Chris -- Follow the path of the Iguana... http://rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: What is intvar?
On Fri, 23 Jan 2009 02:38:32 -, W. eWatson notval...@sbcglobal.net wrote: I'm looking at someone's code in which invar() is used fairly often. Apparently, it's a Tkinter method. Here's a use: def body(self,master): self.title(Display Settings) self.colorVar = IntVar() Radiobutton( master, text=Gray Scale, value=1, variable=self.colorVar).grid(row=0, sticky=W) Radiobutton( master, text=Pseudo Color, value=2, variable=self.colorVar).grid(row=1, sticky=W) ... What is the need for this use? It looks like some sort of initialization for a widget. Chris has already pointed you to the Tkinter documentation, which is a good start but a little less than clear in places. What your example code does is to associate self.colorVar with the set of radio buttons. This isn't just initialisation, it's a full reflection of the current state. self.colorVar.get() returns the value parameter that you gave to the radio button which is currently selected (so, for example, if it returns 1 you know that the Grey Scale button is the one selected). Similarly self.colorVar.set(n) selects whichever radio button has the value which matches n (so self.colorVar.set(2) selects the Pseudo Color button). IntVar and StringVar (and DoubleVar if you must :-) are basically the easy way of dynamically reading and changing the values in various entry widgets, the text on buttons, and so on. -- Rhodri James *-* Wildebeeste Herder to the Masses -- http://mail.python.org/mailman/listinfo/python-list
Re: What is intvar?
here is a good explanation of control vars: http://infohost.nmt.edu/tcc/help/pubs/tkinter/control-variables.html Here are 3 great Tkinter refernces in order: http://infohost.nmt.edu/tcc/help/pubs/tkinter/ http://effbot.org/tkinterbook/ http://www.pythonware.com/library/tkinter/introduction/ -- http://mail.python.org/mailman/listinfo/python-list
