我（chain99.mylife@gmail.com）我的代码问题当我从屏幕上的键盘上按下shift按钮更改字符的情况我的程序很慢你有任何想法或改进我的源代码？
class OSKeyboard(Toplevel):
def __init__(self, parent, title = None, pos_x = 50, pos_y = 50):
Toplevel.__init__(self, parent)
self.transient(parent)
#--Dialog Popup Position--#
self.pos_x = pos_x
self.pos_y = pos_y
#--Button List--#
self.btn_list = [
'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', 'Backspace',
'Tab', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\\',
'Caps', 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'', 'Enter',
'Shift','z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/', 'Shift',
'<<', 'Space', '>>', 'Clear'
]
self.btn_listM = [
'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+', 'Backspace',
'Tab', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '|',
'Caps', 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"', 'Enter',
'Shift','Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?', 'Shift',
'<<', 'Space', '>>', 'Clear'
]
self.btn_listS = [
'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', 'Backspace',
'Tab', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '(', ')', '|',
'Caps', 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '_', 'Enter',
'Shift','Z', 'X', 'C', 'V', 'B', 'N', 'M', ',', '.', '/', 'Shift',
'<<', 'Space', '>>', 'Clear'
]
self.keystate = 1; # Small size
#--Dialog title--#
if title:
self.title(title)
self.parent = parent
self.result = None
self.display = StringVar()
mbody = Frame(self)
self.initial_focus = self.body(mbody, 1)
mbody.pack()
self.grab_set()
if not self.initial_focus:
self.initial_focus = self
self.protocol("WM_DELETE_WINDOW", self.cancel)
#--Start Dialog position--#
self.geometry("+%d+%d" % (parent.winfo_rootx()+self.pos_x, parent.winfo_rooty()+self.pos_y))
#--Dialog can't Resize--#
self.resizable(width=FALSE, height=FALSE)
self.initial_focus.focus_set()
self.wait_window(self)
def body(self, master, mtyp):
# create dialog body. return widget that should have
# initial focus. this method should be overridden
for c in range(14):
master.columnconfigure(c, weight=0)#pad=1)
for r in range(5):
master.columnconfigure(r, weight=0)#pad=1)
self.label = Label(master, font=('Helvetica', 32), relief='sunken', borderwidth=3, bg='gray40', anchor=SW, fg='green', textvariable=self.display)##, anchor = SE, fg='blue')
self.label.grid(row = 0, column = 0, columnspan = 14, padx = 1, pady = 1, sticky='SWEN')
fn = ('Helvetica', 10)
fnbold = ('Helvetica', 10, 'bold')
rel = 'raised'#'groove'
if mtyp == 1:
key = self.btn_listS
elif mtyp == 2:
key = self.btn_listM
r = 1
c = 0
for b in key:
cmd = lambda x=b:self.call(x)
c_span = 1
r_span = 1
w = 4
if (r==1):
if(c==12): # Back Space
c_span = 2
cmd = lambda:self.backspace()
Button(master, text = b, font = fnbold, width = w, command = cmd, relief = rel).grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
else:
Button(master, text = b, font = fn, width = w, command = cmd, relief = rel).grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
elif (r==2):
if(c==0): # Tab (4 space)
cmd = lambda:self.call(' ')
Button(master, text = b, font = fnbold, width = w, command = cmd, relief = rel).grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
else:
Button(master, text = b, font = fn, width = w, command = cmd, relief = rel).grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
elif (r==3):
if(c==0): # Capslock
cmd = lambda:self.CapsLock()
Button(master, text = b, font = fnbold, width = w, command = cmd, relief = rel).grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
elif (c==12): # Enter
c_span = 2
r_span = 2
cmd = lambda:self.Enter()
Button(master, text = b, font = fnbold, width = w, command = cmd, relief = rel, bg = '#EF7321').grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
else:
Button(master, text = b, font = fn, width = w, command = cmd, relief = rel).grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
elif (r==4):
if(c==0): # Shift Left
cmd = lambda:self.Shift()
Button(master, text = b, font = fnbold, width = w, command = cmd, relief = rel).grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
elif(c==11): # Shift Right
cmd = lambda:self.Shift()
Button(master, text = b, font = fnbold, width = w, command = cmd, relief = rel).grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
else:
Button(master, text = b, font = fn, width = w, command = cmd, relief = rel).grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
elif (r==5):
if(c==0): # <<
Button(master, text = b, font = fnbold, width = w, command = cmd, relief = rel, state=DISABLED).grid(row = r, column = c, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
elif(c==1): # Space
c_span = 10
cmd = lambda:self.call(' ')
Button(master, text = b, font = fnbold, width = w, command = cmd, relief = rel).grid(row = r, column = 1, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
elif(c==2): # >>
Button(master, text = b, font = fnbold, width = w, command = cmd, relief = rel, state=DISABLED).grid(row = r, column = 11, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
elif(c==3): # Clear
c_span = 2
cmd = lambda:self.clear()
Button(master, text = b, font = fnbold, width = w, command = cmd, relief = rel).grid(row = r, column = 12, rowspan = r_span, columnspan = c_span, padx = 1, pady=1, sticky='SWEN')
c += 1
if (c == 12):
if (r==4):
r += 1
c = 0
elif (c == 13):
if (r==1) or (r==3):
r += 1
c = 0
elif (c == 14):
r += 1
c = 0
def buttonbox(self):
# add standard button box. override if you don't want the
# standard buttons
pass
#
# standard button semantics
def ok(self, event=None):
if not self.validate():
self.initial_focus.focus_set() # put focus back
return
self.withdraw()
self.update_idletasks()
self.apply()
self.cancel()
def cancel(self, event=None):
# put focus back to the parent window
self.parent.focus_set()
self.destroy()
#
# command hooks
def validate(self):
return 1 # override
def apply(self):
pass # override
#--Key return function--#
def call(self, num):
content = self.display.get() + num
self.display.set(content)
if self.keystate == 2: # Shift press
self.body(self, 1)
self.keystate = 1
def Enter(self):
content = self.display.get()
if content == '':
pass
else:
self.result = content
self.ok()
def Backspace(self):
pass
def Shift(self):
self.body(self, 2);
self.keystate = 2
def Tab(self):
pass
def CapsLock(self):
if self.keystate == 1:
self.body(self, 2)
self.keystate = 3
elif self.keystate == 3 or self.keystate == 2:
self.body(self, 1)
self.keystate = 1
def Space(self):
pass
#--Sign--#
def sign(self):
content = -(float(self.display.get()))
self.display.set(content)
#--Calculated using the eval function--#
def calculate(self):
try:
content = self.display.get()
result = eval(content)
self.result = result
self.display.set(str(result))
self.ok()
except:
self.display.set('Error')
self.clear()
#--Empty the contents of the column--#
def clear(self):
self.display.set('')
#--Before you delete a charater--#
def backspace(self):
self.display.set(str(self.display.get()[:-1]))
def open_dialog():
pass
def main():
root = Tk()
d = OSKeyboard(root, 'On Screen Keyboard', 600, 100)
print d.result
root.mainloop()
答案 0 :(得分：0)
pack_forget()
from Tkinter import *
master = Tk()
def show():
global hello_visible
if hello_visible:
hello_visible = False
l1.pack_forget()
l2.pack(side=RIGHT)
else:
hello_visible = True
l1.pack(side=LEFT)
l2.pack_forget()
b1 = Button(master, text="PRESS", command=show, width=10)
b1.pack()
l1 = Label(master, text="Hello")
l2 = Label(master, text="World")
hello_visible = True
l1.pack(side=LEFT)
master.mainloop()
您可以使用pack_forget删除任何小部件（由pack()添加）
然后您可以使用pack(all_arguments_again)
与grid/grid_forget
pack()再次添加小部件，但是在所有可见元素之后
使用grid()，您可以在同一位置添加元素。