Can anyone tell me what method python uses to set the color of a button in dialogs? I'm trying to modify a script which uses lines like this

self.buttonBack = Button(self.master, text="Back", bg="lightgreen",command=self.HandleBack)

Is there any option other than naming the color, (like 'lightgreen')? Can I use RGB codes for colors? If not, what names are acceptable in python? I've found a few by experimenting, but it's tedious work.

TIA

mac

PS I did trying searching for this subject, but I kept getting hundreds of unrelated posts.

self.buttonBack = Button(self.master, fg="#ffffff", bg="#000000"  ....

("fg" or "foreground", "bg" or "background"; parameter: same notation as in HTML)

Tkinter docu: http://effbot.org/tkinterbook/

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Wow! That was fast!

Thanks very much. And thanks for the link. I've been on google for ages hunting down python pages.

cheers

mac

www.python.org is a good start point .

Hi adp,

I have a question. I was looking through the docs you linked to, and on this page

http://effbot.org/tkinterbook/tkinter-standard-dialogs.htm

it mentions an 'icon (constant)' option.

Does this mean icons can be used on a dialog button in place of text? I couldn't find any more information on this in the docs.

mac

I think I found it.

image=

Although I'm not sure what the path would be. Somewhere in the python library? And are .pngs ok as images?

Sorry. I'm fumbling about in the dark with this stuff. LOL.

mac

Quote - I think I found it.

image=

Although I'm not sure what the path would be. Somewhere in the python library? And are .pngs ok as images?

Sorry. I'm fumbling about in the dark with this stuff. LOL.

mac

My tcl/tk is a little rusty, but IIRC, image handling is limited unless PIL is available.
There are two image types available without PIL :-
BitmapImage -> http://effbot.org/tkinterbook/bitmapimage.htm
PhotoImage -> http://effbot.org/tkinterbook/photoimage.htm

Only PhotoImages will be any use to you, and without PIL, you're essentially limited to GIFs.

nruddock is right. Only GIFs or XBM-files (a format mostly used on unixoid OS's).
The way out is indeed PIL. It's easy to use if you have found out to handle it.

The following code is untested, but will give an idea:

import Image as PIL
import ImageTk as PILTK

class ImageButton(Button) :
        def __init__(self, master, **kw) :
                img=kw.pop("image",None)
                if img:
                        self.TKimage=ImageTk.PhotoImage(PIL.open(img))
                        kw["image"]=self.TKimage
                else :
                        self.TKimage=None

                
                Button.__init__(self, master, **kw)

The class ImageButton can now be used like a standard button. If you give an imagename, the image is opened via PIL (so nearly any format is supported) and a Tk-compatible image is buffered in class ImageButton (this is needed to avoid that the image is removed via Pythons garbage-collection). The filename is than replaced with a pointer to the image, so the original init-call is done properly.

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Sorry - better write: import ImageTk (without "as PILTK")

Pil can be downloaded from here: http://www.pythonware.com/products/pil/index.htm

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Thanks a lot, guys. I'll check out these links and try it out.

cheers

mac

Here's a working example of a GIF on a button. 
Two fussy points:
You have to initialize the PhotoImage variable before using it on the button, and
the PhotoImage variable MUST be a global variable.

from Tkinter import *
global imHelp

...........

        imHelp=PhotoImage(file="c:poser 7runtimepythonposerScriptsHelp.gif")
        self.HelpButton=Button(self.master,image=imHelp,command=self.HandleHelp)
        self.HelpButton.grid(row=0,column=1,sticky=E)

My python page
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Quote - Here's a working example of a GIF on a button. 
Two fussy points:
You have to initialize the PhotoImage variable before using it on the button, and
the PhotoImage variable MUST be a global variable.

PhotoImage variable must be protected from being killed by Pythons garbage collection, as I wrote previously. That does not mean variable PhotoImage must be global! It can also be a class-variable. It can also be carried in Button itself.

img=Photoimg( ... )
button=Button( master, image=img, ... )
button.img=img

will work perfectly. The Advantage is, you don't have to take care about your images. They are there as long as the "container" lives (Button in this example) and will be "garbage-collected" as soon as Button isn't used anymore.

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