I've looked around SO and tried the solutions offered, but I can't seem to change the text of any button I've made using a double for loop.
The loops are there so I can add them to a list of lists of buttons so I can (supposedly) access them conveniently through the nested list by calling board_button[2][3] or something. They are also dynamically created after the user inputs the board_size such that it generates a grid of nxn buttons so there's that. These are all done inside a class method, and there's another class method that should change the button's text when it's called by the button.
I've tried using the solutions offered here, but none of them actually worked for my problem.
Pardon the long block of code, but I honestly think the way I've made it may have contributed to the problem, and give more insight as result.
from tkinter import filedialog
from tkinter import *
class MainWindow(Frame):
board_size = None
file_input = None
board_buttons = None
board_strvars = None
row = []
def __init__ (self, parent):
Frame.__init__(self, parent)
# initialize widgets but don't show them yet
self.initWidgets()
# show the starting window
self.startWindow()
def generateBoard(self, to_forget=None):
# hides the groups of the method that called it
if to_forget != None:
for i in to_forget:
self.row[i].forget()
# get the board_size from user
self.board_size = int(self.size_entry.get())
# initialize text variables for each button
self.board_strvars = []
for i in range(self.board_size):
self.row_strvars=[]
for j in range(self.board_size):
var = StringVar()
var.set(" ")
self.row_strvars.append(var)
self.board_strvars.append(self.row_strvars)
# insert list of lists of buttons here
self.row[1].pack(fill=X)
self.board_buttons = []
for i in range(self.board_size):
self.row_buttons=[]
for j in range(self.board_size):
self.row_buttons.append(Button(self.row[1], textvariable=self.board_strvars[i][j], command=lambda:self.place(i, j)))
self.row_buttons[j].grid(row=i, column=j)
self.board_buttons.append(self.row_buttons)
# for solve and back button
self.row[2].pack(fill=X)
def initWidgets(self):
# create the rows or groups of widgets
for i in range(3):
self.row.append(Frame())
# row 0; startWindow
self.size_entry = Entry(self.row[0])
self.size_entry.pack(fill=X, side=LEFT)
self.size_button = Button(self.row[0], text="Enter", command=lambda:self.generateBoard([0]))
self.size_button.pack(fill=X, side=LEFT)
self.load_button = Button(self.row[0], text="Load", command=self.loadFile)
self.load_button.pack(fill=X, side=LEFT)
# row 2; generateBoard
self.solve_button = Button(self.row[2], text="Solve", command=self.showSolutions)
self.solve_button.pack(fill=X, side=LEFT)
self.back_button = Button(self.row[2], text="Back", command=lambda:self.startWindow(to_forget=[0,2], to_destroy=[1]))
self.back_button.pack(fill=X, side=RIGHT)
def loadFile(self):
print("file loaded!")
def place(self, i, j):
if self.board_strvars[i][j].get() == " ":
self.board_strvars[i][j].set("C")
else:
self.board_strvars[i][j].set(" ")
def showSolutions(self):
print("solutions shown!")
def startWindow(self, to_forget=None, to_destroy=None):
# hides the groups of the method that called it
if to_forget != None:
for i in to_forget:
self.row[i].forget()
# destroys the groups' child widgets and hides the group
if to_destroy != None:
for i in to_destroy:
for child in self.row[i].winfo_children():
child.destroy()
self.row[i].forget()
self.row[0].pack(fill=X)
if __name__ == "__main__":
root=Tk()
root.title("test")
app = MainWindow(root)
root.mainloop()
I originally wanted to define a function that will change the text of the button that called it. But so far I've found no way to do so.
Doing the solutions offered in the post I linked changes nothing to the buttons. In the code I provided though, I used the StringVar() to be assigned as textvariable of the button. However, it only changes the last row, last column button element no matter which button you click. It's supposed to work in a way that the button that was clicked, will get its text changed.
Thanks!
