From msa01 at bitflipper.ca  Sun Sep  4 09:56:20 2016
From: msa01 at bitflipper.ca (Cam Farnell)
Date: Sun, 4 Sep 2016 10:56:20 -0300
Subject: [Tkinter-discuss] Dealing with a Tk reference
In-Reply-To: <CAEbkakdoDuw1eaaF6VkT1VEw0mON7nqdtHP9vS-5B6w6uYZK2Q@mail.gmail.com>
References: <HE1PR0802MB22848F926CA2E66D97E45AF98FEF0@HE1PR0802MB2284.eurprd08.prod.outlook.com>
 <CAEbkakdoDuw1eaaF6VkT1VEw0mON7nqdtHP9vS-5B6w6uYZK2Q@mail.gmail.com>
Message-ID: <57CC2804.2060904@bitflipper.ca>

I've been using New Mexico Tech example code from here:

http://infohost.nmt.edu/tcc/help/pubs/tkinter/web/menu-toplevel.html

to create a top-level menu. The example code is:

     top = self.winfo_toplevel()
     self.menuBar = tk.Menu(top)
     top['menu'] = self.menuBar

     self.subMenu = tk.Menu(self.menuBar)
     self.menuBar.add_cascade(label='Help', menu=self.subMenu)
     self.subMenu.add_command(label='About', command=self.__aboutHandler)

and that works just fine. In particular it creates a Menu using:

     self.menuBar = tk.Menu(top)

and then assigns it to the top-level using:

     top['menu'] = self.menuBar

In my application it is not convenient to keep the reference to the Menu in self.menuBar. Later when it comes time to add another another cascade to the menu I was hoping to be able access the menu bar using:

     menuBar = top['menu']

but in fact having done that, menuBar not a tk.Menu object as I was hoping but rather a string, such as ".3070843372L", which is presumably a reference to a tk object.

So my question is: how to use the string to access the corresponding tk.Menu object? There's probably some magic way to do that but a bunch of internet searching didn't turn it up.

Thanks

Cam



From klappnase at web.de  Sun Sep  4 10:38:35 2016
From: klappnase at web.de (Michael Lange)
Date: Sun, 4 Sep 2016 16:38:35 +0200
Subject: [Tkinter-discuss] Dealing with a Tk reference
In-Reply-To: <57CC2804.2060904@bitflipper.ca>
References: <HE1PR0802MB22848F926CA2E66D97E45AF98FEF0@HE1PR0802MB2284.eurprd08.prod.outlook.com>
 <CAEbkakdoDuw1eaaF6VkT1VEw0mON7nqdtHP9vS-5B6w6uYZK2Q@mail.gmail.com>
 <57CC2804.2060904@bitflipper.ca>
Message-ID: <20160904163835.dd07f5ca9af89d786e6f0eb7@web.de>

Hi,

On Sun, 4 Sep 2016 10:56:20 -0300
Cam Farnell <msa01 at bitflipper.ca> wrote:

(...)
> In my application it is not convenient to keep the reference to the
> Menu in self.menuBar. Later when it comes time to add another another
> cascade to the menu I was hoping to be able access the menu bar using:
> 
>      menuBar = top['menu']
> 
> but in fact having done that, menuBar not a tk.Menu object as I was
> hoping but rather a string, such as ".3070843372L", which is presumably
> a reference to a tk object.
> 
> So my question is: how to use the string to access the corresponding
> tk.Menu object? There's probably some magic way to do that but a bunch
> of internet searching didn't turn it up.

to convert the widget name into a Widget object you will need the
nametowidget method, as in

menubar = top.nametowidget(top['menu'])

Best regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

No one may kill a man.  Not for any purpose.  It cannot be condoned.
		-- Kirk, "Spock's Brain", stardate 5431.6

From Vasilis.Vlachoudis at cern.ch  Tue Sep  6 05:00:45 2016
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Tue, 6 Sep 2016 09:00:45 +0000
Subject: [Tkinter-discuss] Frame button binding
Message-ID: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>

Hi all,

I want to create a Scrolled Frame, it works nicely with the place command
however when I bind the B2-Motion, and I click the middle mouse button
on the child buttons instead of dragging it does nothing, since they are 
capturing the B2 and not propagate it to the master.

SimplifiedExample:

def dragStart(e):
    print "B2-pressed")

f = Frame(tk)
f.pack(expand=YES, fill=BOTH)
f.bind("<Button-2>", dragStart)

Button(f, text="Button").pack()

I found a not elegant solution of setting the bind to the toplevel like
f.winfo_toplevel().bind("<Button-2>", dragStart)

and in dragStart I am checking
     if not str(e.widget).startswith(str(f)): return

Is there a better way of doing it?

Thanks in advance
Vasilis

From klappnase at web.de  Tue Sep  6 17:24:29 2016
From: klappnase at web.de (Michael Lange)
Date: Tue, 6 Sep 2016 23:24:29 +0200
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
Message-ID: <20160906232429.e7215ffe893a602a6ecc8791@web.de>

Hi,

On Tue, 6 Sep 2016 09:00:45 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Hi all,
> 
> I want to create a Scrolled Frame, it works nicely with the place
> command however when I bind the B2-Motion, and I click the middle mouse
> button on the child buttons instead of dragging it does nothing, since
> they are capturing the B2 and not propagate it to the master.
(...)

Have you tried to simply add a binding for the event to the Frame's
children, as in

b = Button(f, text="Button")
b.pack()
b.bind("<Button-2>", dragStart)     ?

Best regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

No more blah, blah, blah!
		-- Kirk, "Miri", stardate 2713.6

From Vasilis.Vlachoudis at cern.ch  Tue Sep  6 03:41:41 2016
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Tue, 6 Sep 2016 07:41:41 +0000
Subject: [Tkinter-discuss] Toplevel background
Message-ID: <0BC70B5D93E054469872FFD0FE07220E0183221758@CERNXCHG53.cern.ch>

Hi all,

I have a window which I make full screen with the option

tk = Tk()
tk.attributes("-fullscreen", True)
c = Canvas(tk, background="Black")
c.pack(expand=YES, fill=BOTH, padx=0, pady=0)

and displays a full screen "Black" canvas. despite
I h ave padx=pady=0 I always get 1 pixel White frame all around.
I believe that it comes from the toplevel window. How can I remove this frame
or change its color to black

Thanks in advance
Vasilis

From johnmc at velseis.com  Tue Sep  6 19:54:12 2016
From: johnmc at velseis.com (johnmc)
Date: Wed, 7 Sep 2016 09:54:12 +1000
Subject: [Tkinter-discuss] Toplevel background
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E0183221758@CERNXCHG53.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E0183221758@CERNXCHG53.cern.ch>
Message-ID: <20160906235003.M94004@velseis.com>

On Tue, 6 Sep 2016 07:41:41 +0000, Vasilis Vlachoudis wrote
> Hi all,
> 
> I have a window which I make full screen with the option
> 
> tk = Tk()
> tk.attributes("-fullscreen", True)
> c = Canvas(tk, background="Black")
> c.pack(expand=YES, fill=BOTH, padx=0, pady=0)
> 
> and displays a full screen "Black" canvas. despite
> I h ave padx=pady=0 I always get 1 pixel White frame all around.
> I believe that it comes from the toplevel window. How can I remove this frame
> or change its color to black
> 
> Thanks in advance
> Vasilis


Hi Vasilis,

the 1 pixel white frame is coming from the canvas widget being in focus.

Simply change to :

c = Canvas(tk, background="Black", highlightthickness=0)

Regards,

John



-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.


From klappnase at web.de  Wed Sep  7 05:53:37 2016
From: klappnase at web.de (Michael Lange)
Date: Wed, 7 Sep 2016 11:53:37 +0200
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E0183223C69@CERNXCHG53.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
 <20160906232429.e7215ffe893a602a6ecc8791@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0183223C69@CERNXCHG53.cern.ch>
Message-ID: <20160907115337.3309ac2334ec9f29a031293f@web.de>

Hi,

On Wed, 7 Sep 2016 06:31:06 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Hi Michael,
> 
> the ScrollFrame is of generic use as a normal frame class. So I don't
> know apriori how many children it will have. I could set the bind
> recursively in all winfo_children() and sub-children etc. after the
> frame is populated but I though it will be an overkill.
> 

I see your point of course, especially since probably other
events than <Button-2> should be handled, too. Not sure if there is an
easy solution to this, though.
One possibility that comes to mind is adding custom geometry methods to
the ScrolledFrame class that handle the bindings, like:

    def pack_child(self, child, **kw):
        child.pack(**kw)
        child.bind("<Button-2>", self.dragStart)

Then you could conveniently do something like

    b = Button(f, text="Button")
    f.pack_child(b, side='left')

I haven't tried this, but I think it should work, however it might make
the usage of the widget feel oddly unfamiliar. Otoh it should come in
handy enough even for complex layouts with multiple layers of sub-frames
(as long as these aren't ScrolledFrames themselves of course -
definitely a flaw with this approach).

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Vulcans believe peace should not depend on force.
		-- Amanda, "Journey to Babel", stardate 3842.3

From Vasilis.Vlachoudis at cern.ch  Wed Sep  7 06:21:02 2016
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Wed, 7 Sep 2016 10:21:02 +0000
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <20160907115337.3309ac2334ec9f29a031293f@web.de>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
 <20160906232429.e7215ffe893a602a6ecc8791@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0183223C69@CERNXCHG53.cern.ch>,
 <20160907115337.3309ac2334ec9f29a031293f@web.de>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E01832255D8@CERNXCHG53.cern.ch>

Thanks for the idea. It will make the code indeed odd.
I was looking for a less intrusive method, something that I could
easily replace the Frame() with ScrollFrame() in an existing application
and everything should work.

My approach with binding on the toplevel works only if I have only one ScrollFrame, but if I have
more in the application then it doesn't. 
What happens if I bind more than once a certain event? Does Tk calls in chain all handlers
or only the last one?

Vasilis

________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of Michael Lange [klappnase at web.de]
Sent: Wednesday, September 07, 2016 11:53
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Frame button binding

Hi,

On Wed, 7 Sep 2016 06:31:06 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Hi Michael,
>
> the ScrollFrame is of generic use as a normal frame class. So I don't
> know apriori how many children it will have. I could set the bind
> recursively in all winfo_children() and sub-children etc. after the
> frame is populated but I though it will be an overkill.
>

I see your point of course, especially since probably other
events than <Button-2> should be handled, too. Not sure if there is an
easy solution to this, though.
One possibility that comes to mind is adding custom geometry methods to
the ScrolledFrame class that handle the bindings, like:

    def pack_child(self, child, **kw):
        child.pack(**kw)
        child.bind("<Button-2>", self.dragStart)

Then you could conveniently do something like

    b = Button(f, text="Button")
    f.pack_child(b, side='left')

I haven't tried this, but I think it should work, however it might make
the usage of the widget feel oddly unfamiliar. Otoh it should come in
handy enough even for complex layouts with multiple layers of sub-frames
(as long as these aren't ScrolledFrames themselves of course -
definitely a flaw with this approach).

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Vulcans believe peace should not depend on force.
                -- Amanda, "Journey to Babel", stardate 3842.3
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

From klappnase at web.de  Wed Sep  7 06:31:35 2016
From: klappnase at web.de (Michael Lange)
Date: Wed, 7 Sep 2016 12:31:35 +0200
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E01832255D8@CERNXCHG53.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
 <20160906232429.e7215ffe893a602a6ecc8791@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0183223C69@CERNXCHG53.cern.ch>
 <20160907115337.3309ac2334ec9f29a031293f@web.de>
 <0BC70B5D93E054469872FFD0FE07220E01832255D8@CERNXCHG53.cern.ch>
Message-ID: <20160907123135.ac9df2979820ab26cb115f77@web.de>

Hi,

On Wed, 7 Sep 2016 10:21:02 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Thanks for the idea. It will make the code indeed odd.
> I was looking for a less intrusive method, something that I could
> easily replace the Frame() with ScrollFrame() in an existing application
> and everything should work.

I had the same problem quite a while ago; finally I decided that if I
want to scroll the frame I will just need to use the scrollbar ;)
I don't remember what exactly I tried back then, at least I can say if
there's an easy solution, then I did not find it.

> 
> My approach with binding on the toplevel works only if I have only one
> ScrollFrame, but if I have more in the application then it doesn't. 

Exactly, and possibly nested ScrolledFrames make it even worse.

> What happens if I bind more than once a certain event? Does Tk calls in
> chain all handlers or only the last one?

By default, with add=False , only the last binding should be active.

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Women are more easily and more deeply terrified ... generating more
sheer horror than the male of the species.
		-- Spock, "Wolf in the Fold", stardate 3615.4

From Vasilis.Vlachoudis at cern.ch  Wed Sep  7 10:01:19 2016
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Wed, 7 Sep 2016 14:01:19 +0000
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <20160907123135.ac9df2979820ab26cb115f77@web.de>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
 <20160906232429.e7215ffe893a602a6ecc8791@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0183223C69@CERNXCHG53.cern.ch>
 <20160907115337.3309ac2334ec9f29a031293f@web.de>
 <0BC70B5D93E054469872FFD0FE07220E01832255D8@CERNXCHG53.cern.ch>,
 <20160907123135.ac9df2979820ab26cb115f77@web.de>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E01832259CD@CERNXCHG53.cern.ch>

Until now I had the scrollbar working which is not very elegant vs the Mouse Wheel or middle mouse drag.
Everything started in a new application I was doing for RPi as a home server that uses full screen
with no scrollbar and acts on gestures. But I wanted it general so that my other programs could benefit of it.

What if I bind the toplevel on a static method of the ScrollFrame only once by keeping a list of registered scrollframes,
 and then I check if the hit location is inside any of the ScrollFrames.

Is there any fast method to see if a point event.x_root, y_root is inside a widget or do I have to make the comparison
with the winfo_xxx() information

Thanks
Vasilis

________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of Michael Lange [klappnase at web.de]
Sent: Wednesday, September 07, 2016 12:31
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Frame button binding

Hi,

On Wed, 7 Sep 2016 10:21:02 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Thanks for the idea. It will make the code indeed odd.
> I was looking for a less intrusive method, something that I could
> easily replace the Frame() with ScrollFrame() in an existing application
> and everything should work.

I had the same problem quite a while ago; finally I decided that if I
want to scroll the frame I will just need to use the scrollbar ;)
I don't remember what exactly I tried back then, at least I can say if
there's an easy solution, then I did not find it.

>
> My approach with binding on the toplevel works only if I have only one
> ScrollFrame, but if I have more in the application then it doesn't.

Exactly, and possibly nested ScrolledFrames make it even worse.

> What happens if I bind more than once a certain event? Does Tk calls in
> chain all handlers or only the last one?

By default, with add=False , only the last binding should be active.

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Women are more easily and more deeply terrified ... generating more
sheer horror than the male of the species.
                -- Spock, "Wolf in the Fold", stardate 3615.4
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

From klappnase at web.de  Wed Sep  7 16:47:59 2016
From: klappnase at web.de (Michael Lange)
Date: Wed, 7 Sep 2016 22:47:59 +0200
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E01832259CD@CERNXCHG53.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
 <20160906232429.e7215ffe893a602a6ecc8791@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0183223C69@CERNXCHG53.cern.ch>
 <20160907115337.3309ac2334ec9f29a031293f@web.de>
 <0BC70B5D93E054469872FFD0FE07220E01832255D8@CERNXCHG53.cern.ch>
 <20160907123135.ac9df2979820ab26cb115f77@web.de>
 <0BC70B5D93E054469872FFD0FE07220E01832259CD@CERNXCHG53.cern.ch>
Message-ID: <20160907224759.901347b8c9e0cf7baedf79f2@web.de>

Hi,

On Wed, 7 Sep 2016 14:01:19 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Until now I had the scrollbar working which is not very elegant vs the
> Mouse Wheel or middle mouse drag. Everything started in a new
> application I was doing for RPi as a home server that uses full screen
> with no scrollbar and acts on gestures. But I wanted it general so that
> my other programs could benefit of it.
> 
> What if I bind the toplevel on a static method of the ScrollFrame only
> once by keeping a list of registered scrollframes, and then I check if
> the hit location is inside any of the ScrollFrames.
> 
> Is there any fast method to see if a point event.x_root, y_root is
> inside a widget or do I have to make the comparison with the winfo_xxx
> () information

Shouldn't simply using event.widget in the callback be the easiest
way to check which frame (resp. child widget) was clicked?

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Blast medicine anyway!  We've learned to tie into every organ in the
human body but one.  The brain!  The brain is what life is all about.
		-- McCoy, "The Menagerie", stardate 3012.4

From Vasilis.Vlachoudis at cern.ch  Wed Sep  7 02:31:06 2016
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Wed, 7 Sep 2016 06:31:06 +0000
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <20160906232429.e7215ffe893a602a6ecc8791@web.de>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>,
 <20160906232429.e7215ffe893a602a6ecc8791@web.de>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E0183223C69@CERNXCHG53.cern.ch>

Hi Michael,

the ScrollFrame is of generic use as a normal frame class. So I don't know apriori how many
children it will have. I could set the bind recursively in all winfo_children() and sub-children etc. after the
frame is populated but I though it will be an overkill.

Vasilis
________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of Michael Lange [klappnase at web.de]
Sent: Tuesday, September 06, 2016 23:24
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Frame button binding

Hi,

On Tue, 6 Sep 2016 09:00:45 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Hi all,
>
> I want to create a Scrolled Frame, it works nicely with the place
> command however when I bind the B2-Motion, and I click the middle mouse
> button on the child buttons instead of dragging it does nothing, since
> they are capturing the B2 and not propagate it to the master.
(...)

Have you tried to simply add a binding for the event to the Frame's
children, as in

b = Button(f, text="Button")
b.pack()
b.bind("<Button-2>", dragStart)     ?

Best regards

Michael

.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

No more blah, blah, blah!
                -- Kirk, "Miri", stardate 2713.6
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

From johnmc at velseis.com  Thu Sep  8 06:21:02 2016
From: johnmc at velseis.com (johnmc)
Date: Thu, 8 Sep 2016 20:21:02 +1000
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
Message-ID: <20160908101050.M39431@velseis.com>

On Tue, 6 Sep 2016 09:00:45 +0000, Vasilis Vlachoudis wrote
> Hi all,
> 
> I want to create a Scrolled Frame, it works nicely with the place command
> however when I bind the B2-Motion, and I click the middle mouse button
> on the child buttons instead of dragging it does nothing, since they are 
> capturing the B2 and not propagate it to the master.
> 
> SimplifiedExample:
> 
> def dragStart(e):
>     print "B2-pressed")
> 
> f = Frame(tk)
> f.pack(expand=YES, fill=BOTH)
> f.bind("<Button-2>", dragStart)
> 
> Button(f, text="Button").pack()
> 
> I found a not elegant solution of setting the bind to the toplevel like
> f.winfo_toplevel().bind("<Button-2>", dragStart)
> 
> and in dragStart I am checking
>      if not str(e.widget).startswith(str(f)): return
> 
> Is there a better way of doing it?
> 


Hi Vasilis,

I'm a bit late in this discussion, but have you tried the following (a modification 
of your simplified code):

from Tkinter import *

root = Tk()

def dragStart(e):
    print "B2-pressed"

def check(e):
    print "Button pressed with B2"
    return "break"
    
f = Frame(root)
f.pack(fill=BOTH, expand=YES)
root.bind("<Button-2>", dragStart)

b = Button(f, text='Button')
b.pack()
b.bind("<Button-2>", check)

root.mainloop()


In the above the <Button-2> event is bound to all the widgets in the Toplevel. There 
is also a separate binding specific to the Button widget.  If the <Button-2> event 
happens on the Button "b" widget it is not propagated to the higher binding level by 
means of the "break" return.

Regards,

John


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From Vasilis.Vlachoudis at cern.ch  Fri Sep  9 03:24:57 2016
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Fri, 9 Sep 2016 07:24:57 +0000
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <20160907224759.901347b8c9e0cf7baedf79f2@web.de>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
 <20160906232429.e7215ffe893a602a6ecc8791@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0183223C69@CERNXCHG53.cern.ch>
 <20160907115337.3309ac2334ec9f29a031293f@web.de>
 <0BC70B5D93E054469872FFD0FE07220E01832255D8@CERNXCHG53.cern.ch>
 <20160907123135.ac9df2979820ab26cb115f77@web.de>
 <0BC70B5D93E054469872FFD0FE07220E01832259CD@CERNXCHG53.cern.ch>,
 <20160907224759.901347b8c9e0cf7baedf79f2@web.de>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E018322C674@CERNXCHG53.cern.ch>

for the moment I was using the event.widget and compare it as a string it is has as prefix the scrolled frame,
but I was wondering if there was a more elegant way.

V.

________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of Michael Lange [klappnase at web.de]
Sent: Wednesday, September 07, 2016 22:47
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Frame button binding

Hi,

On Wed, 7 Sep 2016 14:01:19 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Until now I had the scrollbar working which is not very elegant vs the
> Mouse Wheel or middle mouse drag. Everything started in a new
> application I was doing for RPi as a home server that uses full screen
> with no scrollbar and acts on gestures. But I wanted it general so that
> my other programs could benefit of it.
>
> What if I bind the toplevel on a static method of the ScrollFrame only
> once by keeping a list of registered scrollframes, and then I check if
> the hit location is inside any of the ScrollFrames.
>
> Is there any fast method to see if a point event.x_root, y_root is
> inside a widget or do I have to make the comparison with the winfo_xxx
> () information

Shouldn't simply using event.widget in the callback be the easiest
way to check which frame (resp. child widget) was clicked?

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Blast medicine anyway!  We've learned to tie into every organ in the
human body but one.  The brain!  The brain is what life is all about.
                -- McCoy, "The Menagerie", stardate 3012.4
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

From Vasilis.Vlachoudis at cern.ch  Fri Sep  9 04:40:50 2016
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Fri, 9 Sep 2016 08:40:50 +0000
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <20160907224759.901347b8c9e0cf7baedf79f2@web.de>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>
 <20160906232429.e7215ffe893a602a6ecc8791@web.de>
 <0BC70B5D93E054469872FFD0FE07220E0183223C69@CERNXCHG53.cern.ch>
 <20160907115337.3309ac2334ec9f29a031293f@web.de>
 <0BC70B5D93E054469872FFD0FE07220E01832255D8@CERNXCHG53.cern.ch>
 <20160907123135.ac9df2979820ab26cb115f77@web.de>
 <0BC70B5D93E054469872FFD0FE07220E01832259CD@CERNXCHG53.cern.ch>,
 <20160907224759.901347b8c9e0cf7baedf79f2@web.de>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E018322C956@CERNXCHG53.cern.ch>

BTW is there a method to get back from Tkinter which function is binded for a message?


________________________________________
From: Tkinter-discuss [tkinter-discuss-bounces+vasilis.vlachoudis=cern.ch at python.org] on behalf of Michael Lange [klappnase at web.de]
Sent: Wednesday, September 07, 2016 22:47
To: tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Frame button binding

Hi,

On Wed, 7 Sep 2016 14:01:19 +0000
Vasilis Vlachoudis <Vasilis.Vlachoudis at cern.ch> wrote:

> Until now I had the scrollbar working which is not very elegant vs the
> Mouse Wheel or middle mouse drag. Everything started in a new
> application I was doing for RPi as a home server that uses full screen
> with no scrollbar and acts on gestures. But I wanted it general so that
> my other programs could benefit of it.
>
> What if I bind the toplevel on a static method of the ScrollFrame only
> once by keeping a list of registered scrollframes, and then I check if
> the hit location is inside any of the ScrollFrames.
>
> Is there any fast method to see if a point event.x_root, y_root is
> inside a widget or do I have to make the comparison with the winfo_xxx
> () information

Shouldn't simply using event.widget in the callback be the easiest
way to check which frame (resp. child widget) was clicked?

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

Blast medicine anyway!  We've learned to tie into every organ in the
human body but one.  The brain!  The brain is what life is all about.
                -- McCoy, "The Menagerie", stardate 3012.4
_______________________________________________
Tkinter-discuss mailing list
Tkinter-discuss at python.org
https://mail.python.org/mailman/listinfo/tkinter-discuss

From Vasilis.Vlachoudis at cern.ch  Fri Sep  9 03:26:39 2016
From: Vasilis.Vlachoudis at cern.ch (Vasilis Vlachoudis)
Date: Fri, 9 Sep 2016 07:26:39 +0000
Subject: [Tkinter-discuss] Frame button binding
In-Reply-To: <20160908101050.M39431@velseis.com>
References: <0BC70B5D93E054469872FFD0FE07220E018322184A@CERNXCHG53.cern.ch>,
 <20160908101050.M39431@velseis.com>
Message-ID: <0BC70B5D93E054469872FFD0FE07220E018322C6A9@CERNXCHG53.cern.ch>

Thanks John,

if I have to bind in all children the "check" function, when I would
find it simpler to bind the dragStart directly

Vasiis

________________________________________
From: johnmc [johnmc at velseis.com]
Sent: Thursday, September 08, 2016 12:21
To: Vasilis Vlachoudis; tkinter-discuss at python.org
Subject: Re: [Tkinter-discuss] Frame button binding

On Tue, 6 Sep 2016 09:00:45 +0000, Vasilis Vlachoudis wrote
> Hi all,
>
> I want to create a Scrolled Frame, it works nicely with the place command
> however when I bind the B2-Motion, and I click the middle mouse button
> on the child buttons instead of dragging it does nothing, since they are
> capturing the B2 and not propagate it to the master.
>
> SimplifiedExample:
>
> def dragStart(e):
>     print "B2-pressed")
>
> f = Frame(tk)
> f.pack(expand=YES, fill=BOTH)
> f.bind("<Button-2>", dragStart)
>
> Button(f, text="Button").pack()
>
> I found a not elegant solution of setting the bind to the toplevel like
> f.winfo_toplevel().bind("<Button-2>", dragStart)
>
> and in dragStart I am checking
>      if not str(e.widget).startswith(str(f)): return
>
> Is there a better way of doing it?
>


Hi Vasilis,

I'm a bit late in this discussion, but have you tried the following (a modification
of your simplified code):

from Tkinter import *

root = Tk()

def dragStart(e):
    print "B2-pressed"

def check(e):
    print "Button pressed with B2"
    return "break"

f = Frame(root)
f.pack(fill=BOTH, expand=YES)
root.bind("<Button-2>", dragStart)

b = Button(f, text='Button')
b.pack()
b.bind("<Button-2>", check)

root.mainloop()


In the above the <Button-2> event is bound to all the widgets in the Toplevel. There
is also a separate binding specific to the Button widget.  If the <Button-2> event
happens on the Button "b" widget it is not propagated to the higher binding level by
means of the "break" return.

Regards,

John


--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.