Python Tkinter：如何将自定义边框添加到弹出窗口

Question

The following is a sample of my code. I do not understand why I cannot create a thin black border surrounding my pop-up window.

Note that I have purposely remove the default border using self.top.overrideredirect(True) . However, I want to re-create a thin layer.

Please try the following (Python 2.7):

from Tkinter import Tk, Frame, Toplevel, Label

class srcDestDescription(Frame):
   def __init__(self, parent):
      Frame.__init__(self, parent)
      self.top = Toplevel(parent)
      self.parent = parent
      self.top.overrideredirect(True)
      self.top.geometry('+%d+%d' % (350, 100))
      self.top.withdraw()
   def display(self):
      self.top.deiconify()
      topLabel = Label(self.top, text = "Hello World")
      topLabel.grid(column = 0, columnspan = 2, row = 0, sticky = 'NSWE', padx = 10, pady = (10, 5))
      topLabel.config(font = ('times', 14))

class Application(Frame):

   def __init__(self, parent):
      Frame.__init__(self, parent)
      self.parent = parent
      self.parent.geometry('%dx%d+%d+%d' % (300, 300, 0, 0))
      self.parent.resizable(0, 0)

      self.pack(expand = True)
      self.srcDestDescription = srcDestDescription(self)
      self.srcDestDescription.display()

def main():
   root = Tk()
   Application(root)
   root.mainloop()

if __name__ == '__main__':
   main()

Answer 1

The following works for me

from Tkinter import Tk, Frame, Toplevel, Label

class MyTop(Toplevel):
   def __init__(self, parent):
      Toplevel.__init__(self, parent)
      self.overrideredirect(True)
      self.withdraw()
      self.geometry('+%d+%d' % (350, 100))
      topLabel = Label(self, text="Hello World",
                       borderwidth=1, relief='solid')
      topLabel.pack(padx=10, pady=(10, 5))
      topLabel.config(font = ('times', 14))

class Application(Frame):

   def __init__(self, parent):
      Frame.__init__(self, parent)
      self.parent = parent
      self.parent.geometry('%dx%d+%d+%d' % (300, 300, 0, 0))
      self.parent.resizable(0, 0)

      self.pack(expand = True)
      self.mytop = MyTop(self.parent)
      self.mytop.deiconify()

def main():
   root = Tk()
   Application(root)
   root.mainloop()

if __name__ == '__main__':
   main()

Code for a tool tip popup, based on Toplevel but with a class that is not a Toplevel subclass, can be found in Pythonxy/lib/idlelib/ToolTip.py. (Copy this is you want to use it.) Idle's CalltipWindow popup are similar but a bit more complicated.

Another way to get a thin-border popup is to use a Menu instance and tk_popup(self, x, y, entry='') (docstring "Post the menu at position X,Y with entry ENTRY."). The typical use is for a right-click context menu, but you invent another use. The Idle example is Pythonxy/Lib/idlelib/EditorWindow.py, EditorWindow.right_menu_event.