I have a checkbutton inside of a menu widget in python with tkinter. (Using python 3.5.2). I know that with normal checkbuttons you can select or deselect the checkbuttons using checkbutton.select() and checkbutton.deselect(). I need to know how to do this with the checkbuttons that I have in the menu object.
I have tried the menu.entrybutton.configure(id, coption) method but there is no coption for selecting and deselecting checkbuttons within the menu.
Any help would be appreciated.
You should assign an IntVar (or possibly StringVar) to the checkbutton when you create it, via its variable= configuration option. You call .get() on this var to check the button's state, and .set() to change its state.
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There are multiple entry widgets in my tkinter gui. So I want to use a single function to enter data in the entry widget currently in focus with the help of a keypad of buttons. How can I do it?
You can use root.focus_get() to get the current focused widget, derive StringVar/IntVar and update them properly, or just use entry.insert('end','0') for example.
I have created a list of 20 check buttons for my last application using Tkinter, but I can't figure out the way to check if a Checkbutton is or not checked.
How do I check if a Checkbutton is checked?
Take a look at this answer: Making Menu options with Checkbutton in Tkinter?
For each of the menu item, you need to create and associate a tk.BooleanVar() that matches the status of the checkbox.
Since you have a lot of check buttons, you might want to create a list or dictionary to store these BooleanVars and associate each of them with its own Checkbutton.
I have multiple buttons in my tkinter 8.5 GUI (on Windows 7). I want whatever button is focused on (tabbed over) to be selected when the user hits Enter. I know I have to bind '<Return>', but I need the rest of the gaps filled in.
Thanks in advance!
Assuming you want this to be universal to all applications in the root window you could do something similar to this.
def clickButton():
widget = root.focus_get()
if widget != root:
widget.invoke()
root = Tkinter.Tk()
root.bind("<Return>", clickButton)
root.mainloop()
That will run any command associated with the currently tabbed selection. If you want to limit it to certain buttons you can do type-checking inside of the method. Widget will be whatever widget is currently in focus via the tabbed selection. Also beware of a user hitting enter on certain widgets that may not support the invoke method.
I know how to create and set menus for tkinter Toplevel windows, but I'm struggling to find any information on how to get a window's menu bar. What I'd like to do is dynamically add options to the menu, so I need to do something like:
menubar = self.getMenu()
menubar.add_cascade(...)
Where self is a Toplevel window. Thanks!
You want to use the cget method, which can be used to get any of the configured options:
menu = self.cget("menu")
How can I make that when checkbutton is checked that then all Sliders move like one by using python 3 and tkinter?
Thanks for any help! :)
First, you will need to save a reference to each of your sliders, which are instances of the Scale widget. Next, you will need to associate a command with the checkbutton (using the command attribute) which will be called whenever the checkbutton is checked or unchecked. In that command you can call the set method of each slider.