I'm making a text editor whose main widget is a Text widget for the user to actually enter text. I need to make the text widget fit to the window when the user resizes the pane. I kind of cheated by making the widget huge, but that's just a makeshift solution to let me work on other parts while I look for a solution. How can I make the Text widget automatically resize to fit the window?
Use pack to place the widget, with expand set to True and fill set to BOTH. Ex:
from tkinter import *
root=Tk()
text=Text(root)
text.pack(expand=True, fill=BOTH)
root.mainloop
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I am making a physics calculator that involves splitting and organizing my calculator by topic. this means i have lots of widgets to navigate the menu to get to the problem. i don't want to delete the widgets as this would remove all the details of the widgets which would make my code unnecessarily complicated and long. is there a way to dynamically link the variables or widgets so that the program can run more smoothly?
I do not know of any way to do this so i cannot provide any code. If there is no way to do it i would also appreciate knowing this.
a way to dynamically link the variables or widgets so that the program can run more smoothly?
I suggest taking look at StringVar which might be linked with suitable widgets, consider following simple example
from tkinter import Tk, Label, Entry, StringVar
root = Tk()
str_var = StringVar(root,"hello")
label = Label(root, textvariable=str_var)
entry = Entry(root, textvariable=str_var)
label.pack()
entry.pack()
root.mainloop()
This creates window with Label and Entry, as you change text in Entry corresponding change is made to Label. You might also find .trace method of StringVar instance useful as it allows you to register callback i.e. function to be called when value was changed.
In other words, is it possible to create a button with Tkinter and place Tkinter canvas text on top of it? The normal workaround would be to simply create a label containing the text on top of the button. However, the button where I want to place the text is an image containing a color gradient and you need to specify a background color for the label.
In other words, how can I create an image that I can click on and execute a function (like a button would do) and place text on top of this button without the need of specifying a background color for the text?
Is there a way to place a tkinter button behind tkinter canvas text?
No, there is not. Windows will always be on top of other canvas objects.
From the official documentation:
"Window items are an exception to the above rules. The underlying window systems require them always to be drawn on top of other items. In addition, the stacking order of window items is not affected by any of the canvas widget commands; you must use the Tk raise command and lower command instead."
In other words, how can I create an image that I can click on and execute a function (like a button would do) and place text on top of this button without the need of specifying a background color for the text?
You can create your own button widget by placing the image on a canvas, then writing text on top of the image. You can then add your own bindings that fire when you click on the canvas.
I am using Tkinter for my python script. At current stage, gui looks ugly because of too many options/widgets in one screen. Not all of them are needed all the time and it can be divided into four parts. Hence my idea is to have them expand the frame (one frame for each part) with its options/widgets in the current window.
Is it possible in tkinter to expand the window/frame when a button or a checkbox is clicked?
ps - I have tried opening each part in new window but this makes gui unnecessarily complicated.
Thanks!
So, your gonna need to define what happens when the button is clicked-
def buttonClicked():
root.geometry("350x300")
where root is the window and then on the button you will need to write -
btn = tkinter.Button(text = "Button", command=buttonClicked)
btn.pack
Hope that answers your question!
When a user selects a portion of text in a Tkinter Entry widget it becomes highlighted. However, when the user clicks away from the widget the highlighting disappears.
Is there any way to keep the selected text highlighted despite the Entry widget not having focus?
I'm attempting to make a custom right-click menu not based on the Tkinter Menu widget (it's based on a Tkinter Toplevel widget), and I would like the text to remain highlighted despite the menu having focus.
You want to set the exportselection option of the text widget to False
text_widget.configure(exportselection=False)
I have implemented an informational popup in a python app using a Tkinter Menu widget. I have a Text widget on a canvas in the root window. I created a Menu widget that has root as its parent. When I detect a mouse hover over the text widget I post the popup menu with menuWidget.post(). When I get a leave event from the text widget my intention was to have the popup disappear by calling menuWidget.unpost(), only the popup menu does not disappear until I click elsewhere outside the text widget.
First, is this a sane method for implementing an informational popup? And can anyone tell me why the popup menu won't disappear?
This is not the right way to do an informational popup. On the Mac and on windows machines menus are native controls. Because of this the unpost command doesn't work because tk cedes control to the system event loop in order to get platform-specific behavior.
What you want is to use instead is a toplevel window with the overrideredirect flag set. This lets you display a borderless window anywhere you want. The upside to this is that you aren't limited to simple text -- you can put anything you want in that toplevel -- another text widget, a canvas, buttons, etc.