On 2019-06-26 16:47, Cecil Westerhof wrote:
I just started with GUI stuff in tkinter. I have a progressbar, but I
want it to be only visible when it is used. So I tried the following:
window = Tk()
window.title(window_str)
frame = Frame(window)
frame.pack(side = "top", fill = "both", expand = True)
Button(window, text = button_str, command = select_dir).pack()
progress = ttk.Progressbar(window, orient = "horizontal", length = 200,
mode = "determinate")
progress.pack()
progress.lower(frame)
window.mainloop()
But that does not hide the progressbar. What am I doing wrong?
I could use pack_forget, but that will change the dimensions of the
window.
The progress bar isn't hidden because there's nothing on top of it to
hide it.
import tkinter as tk
import tkinter.ttk as ttk
window = tk.Tk()
window.title(window_str)
frame = tk.Frame(window)
frame.pack(side='top', fill='both', expand=True)
tk.Button(window, text=button_str, command=select_dir).pack()
# Create a frame to hold the progress bar.
progress_frame = tk.Frame(window)
progress_frame.pack(fill='x', expand=True)
# Put the progress bar into the progress frame, ensuring that it fills
the grid cell.
progress = ttk.Progressbar(progress_frame, orient='horizontal',
length=200, mode='determinate')
progress.grid(row=0, column=0, sticky='nsew')
# Now put a blank frame into the progress frame over the progress bar,
ensuring that it fills the same grid cell.
blank = tk.Frame(progress_frame)
blank.grid(row=0, column=0, sticky='nsew')
# Raise the progress bar over the blank frame to reveal it.
progress.tkraise()
# Lower the progress bar underneath the blank frame to hide it.
progress.lower()
window.mainloop()
--
https://mail.python.org/mailman/listinfo/python-list
