[英]Hide or Close Tkinter Top Level Window When Main Window Is Not Visible
[英]Tkinter; how to use scrollbar in a popup/top-level window that opens when a button is pressed in main root window
我正在尝试在顶层窗口中创建带有滚动条的应用程序,当在主根窗口中按下按钮bttn时,该窗口会打开,并且从下面的代码中我需要以下帮助:
滚动条vscrollbar不应出现在主根窗口中,而应出现在新的弹出窗口中
from Tkinter import * class VerticalScrolledFrame(Frame): def __init__(self, parent, *args, **kw): Frame.__init__(self, parent, *args, **kw) # create a canvas object and a vertical scrollbar for scrolling it vscrollbar = Scrollbar(self, orient=VERTICAL) vscrollbar.pack(fill=Y, side=RIGHT, expand=FALSE) canvas = Canvas(self, bd=0, highlightthickness=0, yscrollcommand=vscrollbar.set) canvas.pack(side=LEFT, fill=BOTH, expand=TRUE) vscrollbar.config(command=canvas.yview) # reset the view canvas.xview_moveto(0) canvas.yview_moveto(0) # create a frame inside the canvas which will be scrolled with it self.interior = interior = Frame(canvas) interior_id = canvas.create_window(0, 0, window=interior, anchor=NW) # track changes to the canvas and frame width and sync them, # also updating the scrollbar def _configure_interior(event): # update the scrollbars to match the size of the inner frame size = (interior.winfo_reqwidth(), interior.winfo_reqheight()) canvas.config(scrollregion="0 0 %s %s" % size) if interior.winfo_reqwidth() != canvas.winfo_width(): # update the canvas's width to fit the inner frame canvas.config(width=interior.winfo_reqwidth()) interior.bind('<Configure>', _configure_interior) def _configure_canvas(event): if interior.winfo_reqwidth() != canvas.winfo_width(): # update the inner frame's width to fill the canvas canvas.itemconfigure(interior_id, width=canvas.winfo_width()) canvas.bind('<Configure>', _configure_canvas) if __name__ == "__main__": class SampleApp(Frame): def __init__(self,root, *args, **kwargs): Frame.__init__(self, root,*args, **kwargs) self.frame = VerticalScrolledFrame(root) self.frame.pack() self.widget() def widget(self): self.label = Label(text="Shrink the window to activate the scrollbar.") self.label.pack() bttn = Button(self.frame.interior, text = "Flytta fram/bak i listvy", command = self.open_new_window_with_text_and_scrollbar) bttn.pack() # Should be opened in a new, top-level, window from the main root window by pressing the #button bttn defined in widget() # the new popup window should contain the scrollbar vscrollbar defined in SampleApp # the scrollbar vscrollbar shouldn't appear in the main root window, only in the new #popup window def open_new_window_with_text_and_scrollbar(self): self.top = tk.Toplevel(self) frame = VerticalScrolledFrame(root) frame.pack() Button = tk.Button(self.top, text="Close window", command=self.top.destroy) Label = tk.Label(self.top, wraplength = 500,text="testing") Label.pack(side="left", fill="both", expand=True) Button.pack() root = tk.Tk() root.title("Maltparser1.0_demo") root.geometry("900x700") app = SampleApp(root) root.mainloop()
您要将root
作为父级传递给VerticalScrolledFrame
,而需要传递self.top
:
class SampleApp(Frame):
# ...Other code...
def open_new_window_with_text_and_scrollbar(self):
self.top = tk.Toplevel(self)
frame = VerticalScrolledFrame(self.top)
frame.pack()
# Other widgets
这就是为什么它将自身添加到主根窗口而不是Toplevel
。
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