禁用按钮功能

Question

我是python的初学者。我在穿线方面遇到了问题，前天在学校得到了解决stackoverflow.com网站. 这个问题的链接如下：Python : creating a new process

现在我又遇到了另一个问题。在下面所附的代码中，我想在OnButtonClick1执行某些操作时禁用Button OnButtonClick2的功能。你知道吗

import Tkinter
import threading
import time
class simpleapp_tk(Tkinter.Tk):
    def __init__(self,parent):
        Tkinter.Tk.__init__(self,parent)
        self.parent = parent
        self.initialize()

    def initialize(self):
        self.grid()

        self.entryVariable = Tkinter.StringVar()
        self.entry = Tkinter.Entry(self,textvariable=self.entryVariable)
        self.entry.grid(column=0,row=0,sticky='EW')
        self.entry.bind("<Return>", self.OnPressEnter)
        self.entryVariable.set(u"Enter text here.")



        button1 = Tkinter.Button(self,text=u"Exp1 ",
                                command=self.OnButtonClick1)
        button1.grid(column=1,row=0)


        button2 = Tkinter.Button(self,text=u"Exp2 ",
                                command=self.OnButtonClick2)
        button2.grid(column=1,row=1)


        self.grid_columnconfigure(0,weight=1)
        self.resizable(True,False)
        self.update()
        self.geometry(self.geometry())       
        self.entry.focus_set()
        self.entry.selection_range(0, Tkinter.END)

    def OnButtonClick1(self):
        thr = threading.Thread(target=self.print_deep1)
        thr.start()
    def print_deep1(self):
        time.sleep(10)
        print 'deep'


    def OnButtonClick2(self):
        thr = threading.Thread(target=self.print_deep2)
        thr.start()
    def print_deep2(self):
       while True:
          print 'deepak'


    def OnPressEnter(self,event):
        self.labelVariable.set( self.entryVariable.get()+" (You pressed ENTER)" )
        self.entry.focus_set()
        self.entry.selection_range(0, Tkinter.END)

if __name__ == "__main__":
    app = simpleapp_tk(None)
    app.title('my application')
    app.mainloop()

Answer 1

最简单的（不是最好的）方法是将onclick2指向dumb函数；但是您必须知道button1上的线程何时完成作业。重命名OnButtontClick2-onBtClick2和self.OnButtonClick2 = lambda *arg:None。线程完成作业时self.OnButtonClick2 = self.onBtClick2。你知道吗

哦，别把方法命名成类了。以小写字母或蛇形字母开头，更容易阅读。你知道吗

Answer 2

以下代码可能是解决问题的方法之一：

import Tkinter
import threading
import time

class simpleapp_tk(Tkinter.Tk):
    global sempahore

    def __init__(self,parent):
        Tkinter.Tk.__init__(self,parent)
        self.parent = parent
        self.initialize()
        self.kick=True

    def initialize(self):
        self.grid()

        self.entryVariable = Tkinter.StringVar()
        self.entry = Tkinter.Entry(self,textvariable=self.entryVariable)
        self.entry.grid(column=0,row=0,sticky='EW')
        self.entry.bind("<Return>", self.OnPressEnter)
        self.entryVariable.set(u"Enter text here.")



        button1 = Tkinter.Button(self,text=u"Exp1 ",
                                command=self.OnButtonClick1)
        button1.grid(column=1,row=0)


        button2 = Tkinter.Button(self,text=u"Exp2 ",
                                command=self.OnButtonClick2)
        button2.grid(column=1,row=1)


        self.grid_columnconfigure(0,weight=1)
        self.resizable(True,False)
        self.update()
        self.geometry(self.geometry())       
        self.entry.focus_set()
        self.entry.selection_range(0, Tkinter.END)

    def OnButtonClick1(self):
        if (self.kick == True):
            print 'before assignment self.kick =  %s' %(self.kick,)
            self.kick=False
            print 'after assignment self.kick =  %s' %(self.kick,)
            thr = threading.Thread(target=self.print_deep1)
            thr.start()        
    def print_deep1(self):
        print 'on entering function self.kick =  %s' %(self.kick,)
        print (time.strftime("%H:%M:%S"))
        time.sleep(10)
        print (time.strftime("%H:%M:%S"))
        print 'deep'
        self.kick= True
        print 'at end of function self.kick =  %s' %(self.kick,)


    def OnButtonClick2(self):
        if (self.kick !=False):
            thr = threading.Thread(target=self.print_deep2)
            thr.start()
    def print_deep2(self):
        print self.kick
        print (time.strftime("%H:%M:%S"))
        time.sleep(5)
        print (time.strftime("%H:%M:%S"))
        print 'deep1'
        self.kick= True

    def OnPressEnter(self,event):
        self.labelVariable.set( self.entryVariable.get()+" (You pressed ENTER)" )
        self.entry.focus_set()
        self.entry.selection_range(0, Tkinter.END)

if __name__ == "__main__":
    app = simpleapp_tk(None)
    app.title('my application')
    app.mainloop()