Tkinter文本编辑器不显示菜单部件

问题描述:

我试图通过python重新制作记事本问题是我的菜单不会打包。我正在使用tkinter模块。到目前为止,尝试的产品应该是一个带有上方菜单栏的文本框。点击每个菜单按钮应该拉起一个手段。我没有写每个菜单选项的任何功能,但让我知道我所有的“add_command” S没有命令Tkinter文本编辑器不显示菜单部件

from tkinter import * 
import tkinter.messagebox 
import tkinter 

# Text Box 
class ScrolledText(Frame): 
     def __init__(self, parent=None, text='', file=None): 
       Frame.__init__(self, parent) 
     self.pack(expand=YES, fill=X)    #make expandable 
     self.makewidgets() 
     self.settext(text,file) 

    def makewidgets(self): 
     sbar = Scrollbar(self) 
     text = Text(self, relief=SUNKEN) 
     sbar.config(command=text.yview)     # xlink sbar and text 
     text.config(yscrollcommand=sbar.set)   # moving one moves other 
     sbar.pack(side=RIGHT, fill=Y)     #pack first-clip last 
     text.pack(side=LEFT, expand=YES, fill=BOTH)  # text clipped first 
     self.text = text 

def settext(self, text='', file=None): 
    if file: 
     text = open(file, 'r').read() 
    self.text.delete('1.0', END) 
    self.text.insert('1.0', text) 
    self.text.mark_set(INSERT, '1.0') 
    self.text.focus() 

def gettext(self): 
    return self.text.get('1.0', END+'-1c') 

# Menu Bar 
class SimpleEditor(ScrolledText): 
    def __init__(self, parent=None, file=None): 
     frm = Frame(parent) 
     frm.pack(fill=X) 
     #Menus 
     mf = Menubutton(root, text='File', width=5, activebackground='lightblue') 
     mf.grid(row=0, column=0, sticky=W) 
     mf.menu = Menu(mf, tearoff=0) 
     mf["menu"] = mf.menu 

     me = Menubutton(root, text='Edit', width=5, activebackground='lightblue') 
     me.grid(row=0, column=1) 
     me.menu = Menu(me, tearoff=0) 
     me["menu"] = me.menu 

     mo = Menubutton(root, text='Format', width=8, activebackground='lightblue') 
     mo.grid(row=0, column=2, sticky=W) 
     mo.menu = Menu(mo, tearoff=0) 
     mo["menu"] = mo.menu 

     mv = Menubutton(root, text='File', width=5, activebackground='lightblue') 
     mv.grid(row=0, column=3, sticky=W) 
     mv.menu = Menu(mv, tearoff=0) 
     mv["menu"] = mv.menu 

     mh = Menubutton(root, text='Help', width=5, activebackground='lightblue') 
     mh.grid(row=0, column=4, sticky=W) 
     mh.menu = Menu(mh, tearoff=0) 
     mh["menu"] = mh.menu 

     # File Options 
     mf.menu.add_command(label='New   Ctrl+N', activebackground='lightblue') 
     mf.menu.add_command(label='Open...  Ctrl+O', activebackground='lightblue') 
     mf.menu.add_command(label='Save   Ctrl+S', activebackground='lightblue') 
     mf.menu.add_command(label='Save as...', activebackground='lightblue') 
     mf.menu.add_separator() 
     mf.menu.add_command(label='Page Setup...', activebackground='lightblue') 
     mf.menu.add_command(label='Print...  Ctrl+P', activebackground='lightblue') 
     mf.menu.add_separator() 
     mf.menu.add_command(label='Exit', activebackground='lightblue') 

     # Edit Options 
     me.menu.add_command(label='Undo   Ctrl+Z', activebackground='lightblue') 
     me.menu.add_separator() 
     me.menu.add_command(label='Cut   Ctrl+X', activebackground='lightblue') 
     me.menu.add_command(label='Copy   Ctrl+C', activebackground='lightblue') 
     me.menu.add_command(label='Paste  Ctrl+V', activebackground='lightblue') 
     me.menu.add_command(label='Delete   Del', activebackground='lightblue') 
     me.menu.add_separator() 
     me.menu.add_command(label='Find   Ctrl+F', activebackground='lightblue') 
     me.menu.add_command(label='Find Next  F3', activebackground='lightblue') 
     me.menu.add_command(label='Replace... Ctrl+H', activebackground='lightblue') 
     me.menu.add_command(label='Go To...  Ctrl+G', activebackground='lightblue') 
     me.menu.add_separator() 
     me.menu.add_command(label='Select All Ctrl+A', activebackground='lightblue') 
     me.menu.add_command(label='Time/Date  F5', activebackground='lightblue') 

     # Format Options 
     mo.menu.add_checkbutton(label='Word Wrap', activebackground='lightblue') 
     mo.menu.add_command(label='Font...', activebackground='lightblue') 

     # View Options 
     mv.menu.add_checkbutton(label='Status Bar', activebackground='lightblue') 

     # Help Options 
     mh.menu.add_command(label='View Help', activebackground='lightblue') 
     mh.menu.add_separator() 
     mh.menu.add_command(label='About Notepad', activebackground='lightblue') 


if __name__ == '__main__': 
    root = Tk() 
    if len(sys.argv) > 1: 
     ScrolledText(file=sys.argv[1]).mainloop() 
    else: 
     ScrolledText(text='').mainloop() 
    root.mainloop() 
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由于某种原因,我发现网格不会随包装一起出现。我重新设置了所有包装菜单,它工作正常。有没有人有任何线索,为什么会这样? –

+0

您不能在同一个包含小部件中使用包和网格,因为每个都会响应正在打包/网格化的小部件中的更改。所以,包会根据其算法增加或缩小小部件。网格会看到小部件改变大小并尝试重新排列小部件以适应_its_算法。包会看到一些小部件改变了大小,并尝试重新排列小部件以适合_its_算法。网格会看到一些小部件改变了大小,并且...无限。 –

这是高度异常,使菜单按钮为滚动文本的孩子小部件。使菜单栏的正确方法是创建一个菜单(不是菜单按钮),然后安装菜单到根:

menubar = tk.Menu(root) 
    root.configure(menu=menubar) 
    fileMenu = tk.Menu(menubar) 
    menubar.add_cascade(label="File", menu=fileMenu) 
    ... 

这样做,这样保证你得到适当的,原生的菜单栏。