How do I change tkinter default title in OS bar? - python

I am writing a python app using Tkinter and I cannot find a way to change the default title Tk in OS top bar (Gnome top bar and dock too).
I can set the main window title but it does not change the string in the top bar where it stays Tk. Honestly I am surprised I cannot find anyone asking this same question.
I am developing on Ubuntu 18.04 using Python 3.6
This is a sample code to replicate the problem:
import tkinter as tk
if __name__ == "__main__":
mainWindow = tk.Tk()
mainWindow.title("TEST")
mainWindow.geometry("1024x600")
mainWindow.mainloop()
I would expect to read the string TEST in the main window frame title, in the OS top bar and in the OS application dock, but I get it only in the windows frame title. The rest display Tk

Use className
mainWindow = tk.Tk(className='Ghanshyam')
According to python Docs on tkinter:
The Tk class is instantiated without arguments. This creates a toplevel widget of Tk which usually is the main window of an application. Each instance has its own associated Tcl interpreter.

The top bar title in Ubuntu is not set by the application running, it is set by the desktop entry for the app. I'm not sure why it works the way it does when there is no desktop entry present, but you can create a file like this and import it into Ubuntu for it to work properly.
[Desktop Entry]
Type=Application
Terminal=false
Icon=/path/to/icon/icon.png
Name=TITLE (this is what handles the top bar title)
Exec=/path/to/file/executable
Categories=Utility;
See this question on AskUbuntu.

Related

Get icon of root window to be used by second window tkinter

I was wondering if there is anyway to get the ico file of one window and use it in the same window, without getting to know the icon location.
from tkinter import *
root = Tk()
root.iconbitmap('img/icn.ico')
top = Toplevel()
root.mainloop()
Here I want top to have icon of root without saying top.iconbitmap() or top.iconphoto(), the closest ive got is top.tk.call('wm','iconbitmap') but I dont know what is to be done with this as i couldnt find a understandable documentation.
Why dont I want to use iconbitmap(), its basically that, with tkinter.messagebox you can see the messagebox automatically inherit the icons from the parent widget. I was trying to duplicate this effect. Where if the icon is the default tk icon, then show blank icon or else show the custom icon.
Thanks in advance :D
[I'm using links into the core Tk documentation here. It's much more accurate than the Tkinter docs for most things, and Tkinter is mostly an obvious thin wrapper around it.]
You don't want wm iconbitmap. That's been effectively obsolete for decades; it uses an object class — bitmap — that's not relevant these days as it is monochrome and uses the weirdest format. (Filenames need to be preceded by # to make them work.)
Instead, you want to manipulate the wm iconphoto of the toplevel windows concerned. These take true photo images (there are many image file formats you can load into them) and you can share them easily.
# Load the image from the file; can also use PNG and other formats
my_image = PhotoImage(file="image.gif")
# Apply the image as the icons
first_toplevel_window.iconphoto(False, my_image)
second_toplevel_window.iconphoto(False, my_image)
Note that how the icon is displayed can vary wildly; it's not under your control.
You can use iconphoto() and set the first argument to True, then the same icon will be used for future created toplevels as well:
import tkinter as tk
root = tk.Tk()
icn = tk.PhotoImage(file='my-icon.png')
root.iconphoto(True, icn)
top = tk.Toplevel(root)
root.mainloop()
If you use the default instead of the bitmap (or first) argument, the icon will automatically be used on all TopLevel windows:
root.iconbitmap('img/icn.ico') # icon set only on root
root.iconbitmap(bitmap='img/icn.ico') # same as above
root.iconbitmap(default='img/icn.ico') # icon set on root and all TopLevels

How to bring Tkinter window in front of other windows?

I'm working with some Tkinter Python code (Python 3.4), and I've come across a problem. When I create my Tkinter window it doesn't show up in front. I do it currently with the following code:
from tkinter import *
win = Tk()
win.minsize(width=1440, height=828)
win.maxsize(width=1440, height=828)
The minsize() and maxsize() make the window cover my entire screen, but the original python running window (The one that wouldprint("Hello, World!")) ends up on top. Is there a way to fix this? I'm running OS X 10.10.1.
Set it as the topmost (but it will always stay in front of the others):
win.attributes('-topmost', True) # note - before topmost
To not make it always in front of the others, insert this code before the mainloop:
win.lift()
win.attributes('-topmost', True)
win.attributes('-topmost', False)
Don't forget win.mainloop() at the end of your code (even if in some cases it's not explicitly required)
Other discussions on the same problem:
How to put a Tkinter window on top of the others
How to make a Tkinter window jump to the front?

ttk OptionMenu does not fit into its bounding box

I am facing a problem creating a Tkinter-application under Windows, using python 2.7. Basically, when I create an OptionMenu, its right corner (where a down button indicates that something happens when you click there) is truncated in the middle.
The following code reproduces the issue:
from Tkinter import Tk, StringVar
from ttk import OptionMenu
root = Tk()
options = list('ABC')
var = StringVar(value='A')
om = OptionMenu(root, var, var.get(), *options)
om.config(width=25)
om.pack()
root.mainloop()
The result looks on my computer like this:
I have played around with the padx and ipadx keywords of the packing layout manager and also tried a grid layout instead. None of them lets me see the down-arrow completely.
I appreciate your helpful comments on this issue.
The same happens to me on Windows 7 but not on XP, both using Python 2.7. I have found a bug report which states is should be fixed in Tk 8.5.8. Updating Tcl/Tk in Python seems to be very complicated though
The fix in question is for one of the script files shipped in the tk library. You could modify your local copy of vistaTheme.tcl to match this. In later versions I think it does actually request the size from the system properly but this should work if you are forced to use an older version of Tk.
You can find the path using:
from Tkinter import Tk
tk = Tk()
tk.eval("set tk_library")
and then edit the /ttk/vistaTheme.tcl file. I've got python3 here and it seems to have come with Tk 8.6.1 so has this fixed already.

Adding a program icon in Python GTK

I know this is very simple, just use the command self.set_icon_from_file("icon.png"), however my program still does not display the icon. I made sure the icon.png is in the same working directory as the Python file. I also tried giving the complete file path, but still it does not display the icon.
I am using Ubuntu 10.10 if that helps and using Python V2.6. I use Glade Interface Designer to design the GUI. However, I tried setting the icon both using Glade and using the command above.
I hope I have provided sufficient information.
EDIT: I got the status icon to work in my program.. However in the question I meant the program icon displayed in the task bar and also on the left side of the application bar.
I made sure the icon.png is in the same working directory of the python file.
This may be your problem — paths are looked up relative to the working directory of the Python interpreter, not the file containing the code. I often find myself defining a function like:
def get_resource_path(rel_path):
dir_of_py_file = os.path.dirname(__file__)
rel_path_to_resource = os.path.join(dir_of_py_file, rel_path)
abs_path_to_resource = os.path.abspath(rel_path_to_resource)
return abs_path_to_resource
Mine isn't actually quite that verbose, but hopefully the variable names make it clear what's going on. Also, getting the absolute path isn't strictly necessary, but might help if you need to debug.
Then you can just do:
self.set_icon_from_file(get_resource_path("icon.png"))
Update: Here is a demo program. "icon.png" is in the same directory as this script, and I run it using ./gtktest.py. I see the icon in the top left corner (standard place for my theme). icon.png is just a shape drawn in Inkscape and exported as a bitmap (it works with the original SVG too, anyway).
#!/usr/bin/env python
import pygtk
pygtk.require('2.0')
import gtk
class HelloWorld:
def delete_event(self, widget, event, data=None):
return False
def destroy(self, widget, data=None):
gtk.main_quit()
def __init__(self):
# create a new window
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.set_icon_from_file('icon.png')
self.window.connect("delete_event", self.delete_event)
self.window.connect("destroy", self.destroy)
# Creates a new button with the label "Hello World".
self.button = gtk.Button("Hello World")
self.window.add(self.button)
self.button.show()
self.window.show()
def main(self):
gtk.main()
if __name__ == "__main__":
hello = HelloWorld()
hello.main()
I am not sure what icon you are creating, but try this smallest PyGTK icon-showing example of taskbar icon I have thought of:
#!/usr/bin/env python
import pygtk
pygtk.require('2.0')
import gtk
# create icon object
statusIcon = gtk.StatusIcon()
# load it
statusIcon.set_from_file("icon.ico")
# show it
statusIcon.set_visible(True)
# and run main gtk loop
gtk.main()
Maybe you just missed the command statusIcon.set_visible(True)
For standard icons, use stock items, and find icons that suits your needs. that way
You don't have to pack icons whith your program
The icons change
according to the user's theme and will blend nicely in her
environment.
for pyGTK :
gtk.icon_theme_get_default().load_icon("folder-open", 128, 0)

Python 2.7/Windows: How to control position of Tkinter common dialogs?

Python 2.7 under Windows: How can we control the position of Tkinter's common dialogs?
Here's what we've discovered:
Certain common dialogs always open up relative to their parent window
Certain common dialogs always open up centered on the user's desktop
All common dialogs appear to ignore the optional parent= parameter
Questions:
How can we force a dialog to open up relative to its parent window?
How can we force a dialog to open up centered on the user's desktop?
Background:
import tkColorChooser as colorchooser
import tkFileDialog as filedialog
import tkMessageBox as messagebox
; # always open up relative to parent windows
fileOpen = filedialog.askopenfilename()
fileOpens = filedialog.askopenfilenames()
fileSaveAs = filedialog.asksaveasfilename()
color = colorchooser.askcolor()
; # always open up centered on desktop
folderOpen = filedialog.askdirectory()
messagebox.askquestion()
Thank you,
Malcolm
For the Windows messagebox you can't. It appears in the center of the screen and that is that. However, the file selection dialog and color chooser are system dialogs that have been given a Tk wrapper so that users see the stock dialogs on this platform. If you set the -parent option then this is passed through to the wrapped windows and it will center itself over your designated toplevel.
In Tk:toplevel .t
tk_chooseColor -parent .t
How you turn that into Tkinter I leave to someone with some Python experience.
As for centering these, the hwndOwner member of the CHOOSECOLOR structure is always set to the HWND for one of your Tk toplevels. To let it parent against the desktop you'd need to pass NULL there and Tk doesn't let you. You could source the unix version (lib/clrpick.tcl) and show that instead but it would then look weird on a Windows desktop.

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