Re: [Pmw-general] PMW combobox won't display properly using X

[Michael Lange <klappnase@we...>]

Hi,

Thus spoketh Friedrich Romstedt <friedrichromstedt@...> 
unto us on Thu, 10 Feb 2011 20:09:34 +0100:

> 2011/2/10 Daniel Barnette <dwbarne@...>:
> > However, when I run the app on a Linux box and try to display it back
> > to my Windows box using an X server (like freeXer or XMing), the
> > combobox widget's drop-down menu is squashed all to the left, leaving
> > just a small vertical bar which otherwise should be a wide drop-down
> > menu. Can't scroll it or select anything in it -- it's not wide
> > enough to see anything in it.

Maybe explicitely defining the list's width as in this example might help
(though I cannot test it here):

import Pmw
root=Pmw.initialise()
cb = Pmw.ComboBox()
cb.pack()
cb.update_idletasks()
cb.component('scrolledlist').configure(hull_width=cb.component('entryfield').winfo_reqwidth())
root.mainloop()

Regards

Michael


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

	"Logic and practical information do not seem to apply here."
	"You admit that?"
	"To deny the facts would be illogical, Doctor"
		-- Spock and McCoy, "A Piece of the Action", stardate unknown

[Pmw-general] PMW combobox won't display properly using X

[Daniel Barnette <dwbarne@gm...>]

Re: [Pmw-general] PMW combobox won't display properly using X

[Friedrich Romstedt <friedrichromstedt@gm...>]

2011/2/10 Daniel Barnette <dwbarne@...>:
> However, when I run the app on a Linux box and try to display it back to my
> Windows box using an X server (like freeXer or XMing), the combobox widget's
> drop-down menu is squashed all to the left, leaving just a small vertical
> bar which otherwise should be a wide drop-down menu. Can't scroll it or
> select anything in it -- it's not wide enough to see anything in it.

I don't know why it happens but the combobox uses some tricks inside
of Pmw, which also I never understood completely :-)

Comboxes are not native in Tkinter.  You might give ttk a try, iirc
they have it in.  Or the new tkinter (not "Tkinter" anymore).  Or Tix.
 Please report back about progress :-)

FYI:
http://docs.python.org/release/3.1/library/tkinter.ttk.html#combobox
http://docs.python.org/release/2.6.6/library/tix.html#Tix.ComboBox
It seems ttk is available py3.1+ and Tix is available since py2.6 or
earlier.  I don't know if Pmw works on py3k.  I also never tried Tix
so I don't know how it plays with Pmw.

Good luck!  And again, please keep us updated.

Friedrich

Re: [Pmw-general] PMW combobox won't display properly using X

[Michael Lange <klappnase@we...>]

Hi,

Thus spoketh Friedrich Romstedt <friedrichromstedt@...> 
unto us on Thu, 10 Feb 2011 20:09:34 +0100:

> 2011/2/10 Daniel Barnette <dwbarne@...>:
> > However, when I run the app on a Linux box and try to display it back
> > to my Windows box using an X server (like freeXer or XMing), the
> > combobox widget's drop-down menu is squashed all to the left, leaving
> > just a small vertical bar which otherwise should be a wide drop-down
> > menu. Can't scroll it or select anything in it -- it's not wide
> > enough to see anything in it.

Maybe explicitely defining the list's width as in this example might help
(though I cannot test it here):

import Pmw
root=Pmw.initialise()
cb = Pmw.ComboBox()
cb.pack()
cb.update_idletasks()
cb.component('scrolledlist').configure(hull_width=cb.component('entryfield').winfo_reqwidth())
root.mainloop()

Regards

Michael


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

	"Logic and practical information do not seem to apply here."
	"You admit that?"
	"To deny the facts would be illogical, Doctor"
		-- Spock and McCoy, "A Piece of the Action", stardate unknown

Re: [Pmw-general] PMW combobox won't display properly using X

[Daniel Barnette <dwbarne@gm...>]

Michael,

Your snippet helped me get to the solution. Still don't know why this works
though, as you will see.

So I took your .configure statement and tried several variations in the
wording (one can guess at this pretty well after a while, as the
documentation on such things is sparse) of the command in the argument list
until I got it right. The combobox widget code now looks like this:

        self.comboServerMySQL = Pmw.ComboBox(
            self.frameMySQL_30_00,
            scrolledlist_items=self.servers,
            listheight=100,
            entry_width=20,  # this line not needed
            scrolledlist_hull_width=8,  # without this statement, drop-down
menu is a vertical bar;
                                                  # also, if value < 8, no
width to drop down menu, even if
                                                  # the entry_width is made
smaller.
            )
        self.comboServerMySQL.grid(
            row=3,
            column=1,
            sticky=W,
            pady=2,
            )

So without "scrolledlist_hull_width", the drop-down menu just turns into a
useless vertical line when displayed from a Linux box to a Windows box using
an X server. Not good.

Also note, for some weird reason, if scrolledlist_hull_width = 7 or less,
the drop down menu reverts back to a vertical line, even though
"entry_width" is made as small as 8. IOW, "entry_width" does not seem to
affect the fact that "scrolledlist_hull_width" must be 8 or larger.

Why must the value of "scrolledlist_hull_width" be 8 or more???? I have no
idea!!

But at least it's working. Proof that the planets do align occasionally.
Users of my code will be happy, I reckon! :)

I would think the mailing list might like to know all this stuff.

Thanks for the help!

Daniel B.

On Thu, Feb 10, 2011 at 12:48 PM, Michael Lange <klappnase@...> wrote:

> Hi,
>
> Thus spoketh Friedrich Romstedt <friedrichromstedt@...>
> unto us on Thu, 10 Feb 2011 20:09:34 +0100:
>
> > 2011/2/10 Daniel Barnette <dwbarne@...>:
> > > However, when I run the app on a Linux box and try to display it back
> > > to my Windows box using an X server (like freeXer or XMing), the
> > > combobox widget's drop-down menu is squashed all to the left, leaving
> > > just a small vertical bar which otherwise should be a wide drop-down
> > > menu. Can't scroll it or select anything in it -- it's not wide
> > > enough to see anything in it.
>
> Maybe explicitely defining the list's width as in this example might help
> (though I cannot test it here):
>
> import Pmw
> root=Pmw.initialise()
> cb = Pmw.ComboBox()
> cb.pack()
> cb.update_idletasks()
>
> cb.component('scrolledlist').configure(hull_width=cb.component('entryfield').winfo_reqwidth())
> root.mainloop()
>
> Regards
>
> Michael
>
>
> .-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.
>
>        "Logic and practical information do not seem to apply here."
>        "You admit that?"
>        "To deny the facts would be illogical, Doctor"
>                -- Spock and McCoy, "A Piece of the Action", stardate
> unknown
>
>
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