Absolutely! For a Raspberry Pi 3 touchscreen GUI built with Tkinter, there are several solid ways to prevent users from exiting or minimizing your app—removing the title bar is a common and effective approach, and there are other tailored options for touchscreen/kiosk use cases too. Let’s break down the best methods:

方案1：完全移除标题栏和窗口边框 #

Using overrideredirect(True) will strip away the entire title bar (including close/minimize buttons and window borders) entirely, leaving just your GUI content. This is a foolproof way to block users from accessing window controls.

Note: When you use this, the window won’t be draggable by default. If you need drag functionality (unlikely for a fixed touchscreen app, but useful for debugging), you can implement it manually:

import tkinter as tk

root = tk.Tk()
# Remove title bar and borders
root.overrideredirect(True)
# Set to your touchscreen's resolution (common for Pi 3 is 800x480)
root.geometry("800x480")

# Optional: Add window drag functionality (for debugging)
def start_drag(event):
    root.drag_x = event.x
    root.drag_y = event.y

def drag_window(event):
    delta_x = event.x - root.drag_x
    delta_y = event.y - root.drag_y
    new_x = root.winfo_x() + delta_x
    new_y = root.winfo_y() + delta_y
    root.geometry(f"+{new_x}+{new_y}")

root.bind("<ButtonPress-1>", start_drag)
root.bind("<B1-Motion>", drag_window)

# Add your GUI elements here
main_label = tk.Label(root, text="Raspberry Pi Touchscreen App", font=("Arial", 18))
main_label.pack(pady=50)

root.mainloop()

方案2：全屏模式（推荐用于触摸屏） #

For touchscreen kiosk-style apps, fullscreen mode is often the best choice—it hides the title bar, system taskbar, and all window controls automatically, filling the entire screen. You can optionally add a secret exit shortcut (like Escape) for debugging purposes.

import tkinter as tk

root = tk.Tk()
# Enable fullscreen mode
root.attributes("-fullscreen", True)

# Optional: Add an exit shortcut (remove this in production if needed)
def exit_fullscreen(event):
    root.attributes("-fullscreen", False)

# Bind Escape key to exit fullscreen (for testing)
root.bind("<Escape>", exit_fullscreen)

# Your GUI content
status_label = tk.Label(root, text="Running in fullscreen mode", font=("Arial", 16))
status_label.pack(expand=True)

root.mainloop()

If you want to combine fullscreen with overrideredirect(True) for extra safety (though fullscreen usually covers all controls), just add root.overrideredirect(True) alongside the fullscreen attribute.

方案3：禁用关闭按钮（保留标题栏的折中方案） #

If you prefer to keep the title bar but block the close button, you can override the window’s WM_DELETE_WINDOW protocol. Note that this won’t hide minimize/maximize buttons (that’s trickier across window managers like Openbox on Raspbian), so it’s less reliable than the first two methods.

import tkinter as tk

root = tk.Tk()
root.geometry("800x480")

# Make the close button do nothing
root.protocol("WM_DELETE_WINDOW", lambda: None)

# Optional: Hide minimize/maximize buttons (works on some window managers)
root.attributes("-toolwindow", True)

# Your GUI elements
button = tk.Button(root, text="Only interactive element", font=("Arial", 14))
button.pack(pady=30)

root.mainloop()

Key Notes for Raspberry Pi: #

• For kiosk mode, you might also want to disable system-level shortcuts (like Ctrl+Alt+Delete) or hide the desktop taskbar—this requires adjusting Raspbian settings (e.g., modifying autostart files or using a lightweight window manager without taskbars).
• Always test your app on the actual Pi touchscreen, as window behavior can vary slightly between desktop environments.

内容的提问来源于stack exchange，提问作者Yasser Daif