使用切换按钮

Question

我想和T一起玩。开始时，我想有2个选项停止或暂停。当我停止时，我必须重新启动我的 0 计数器。但是当我暂停时，我必须重新启动并继续我停止的地方。

import time
import sys

class ToggleButtonDemo(wx.Frame):
    def __init__(self, parent):
        super().__init__(parent)
        self.panel = wx.Panel(self, -1)
        self.startbutton = wx.ToggleButton(self.panel, -1, "Start")
        self.stopbutton = wx.Button(self.panel, -1, "stop")
        self.stopbutton.Disable()

        self.startbutton.Bind(wx.EVT_TOGGLEBUTTON, self.onButton)
        self.stopbutton.Bind(wx.EVT_BUTTON, self.onStop)
        vbox = wx.BoxSizer(wx.VERTICAL)
        vbox.Add(self.startbutton)
        vbox.Add(self.stopbutton)
        #self.keepGoing = False
        self.panel.SetSizer(vbox)
        self.Show()
        self.etat = True
        self.stop_thread = False        
    def activity(self):
        while self.stop_thread == True:
            for i in range(5):
                print (i)
                time.sleep(1)
                if self.stop_thread == False:
                    #stop
                    return self.stop_thread
                if self.etat == False:
                    print("Pause")
                    break
            self.startbutton.SetLabel("start")
            self.stopbutton.SetLabel("stop")
            self.stopbutton.Disable()
            if self.etat == True:
                self.startbutton.SetValue(False)
            else:
                self.startbutton.SetValue(True)
            return self.stop_thread
    def onButton(self, event):
        self.etat = self.startbutton.GetValue()
        if self.etat == True:
            self.stop_thread = True
            import threading
            self.t = threading.Thread(target = self.activity)
            self.t.start()
            event.GetEventObject().SetLabel("Pause")
            self.stopbutton.Enable()
        if self.etat == False:
            self.etat = False
            #Pause code
            event.GetEventObject().SetLabel("Start")
            self.stopbutton.Disable()
    def onStop(self, event):
        self.stop_thread = False
        self.startbutton.SetLabel("Start")
        self.stopbutton.Disable()
        self.startbutton.SetValue(False)
app = wx.App()
prog = ToggleButtonDemo(None)
app.MainLoop()

停止功能已经可用，我现在需要暂停

Answer 1

您有一个指示线程是否处于运行ning (self.stop_thread) 的状态和一个指示线程是否暂停的状态。这就是你所需要的。在线程中使用 while 循环并在线程中使用运行线程，只要它没有停止并作为计数器（i 小于 5。递增并在循环中打印计数器，如果线程没有暂停。
当 onButton 事件发生时，只有当 theread 不是运行inng (self.stop_thread == False) 时才允许启动线程。例如：

class ToggleButtonDemo(wx.Frame):
    # [...]

    def activity(self):
        # run thread as long not stopped and i <  max_i 
        max_i = 5
        i = 0
        while self.stop_thread and i < max_i:
            if self.etat:
                print(i)
                i = i+1
            time.sleep(1)
        # ensure that stop state is not set (so thread can start again)
        self.stop_thread = False
        self.etat = True
        self.startbutton.SetLabel("Start")
        self.stopbutton.SetLabel("Stop")
        self.stopbutton.Disable()
        self.startbutton.SetValue(False)
        return self.stop_thread

    def onButton(self, event):
        self.etat = self.startbutton.GetValue()
        # start thread in not running
        if self.etat == True:
            if self.stop_thread == False:
                self.stop_thread = True
                self.t = threading.Thread(target = self.activity)
                self.t.start()
                event.GetEventObject().SetLabel("Pause")
            self.stopbutton.Enable()      
        # pause
        if self.etat == False:
            self.etat = False
            event.GetEventObject().SetLabel("Start")
            self.stopbutton.Disable()

使用切换按钮

Use ToggleButton

python

wxpython

python-3.5