python-wx.lib.pubsub：如何更改计时器中的值

您好,我有一个问题,计时器设置为1000毫秒,我想用单选按钮更改该值.上面有一个示例代码,但我不知道确切的操作方法.wx.lib.pubsub是否可能更改计时器的值？
有人可以给我一个例子吗？

这是代码：

import wx
import time

class SettingsFrame(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY,size=(100,200))
        self.CenterOnParent()
        self.SetBackgroundColour('#e4e4e4')

        self.radio1 = wx.RadioButton(self, label="1 sec",pos=(40,45))
        self.Bind(wx.EVT_RADIOBUTTON, self.SetLab1)

        self.radio2 = wx.RadioButton(self, label="5 sec",pos=(40,65))
        self.Bind(wx.EVT_RADIOBUTTON, self.SetLab2)

        self.radio3 = wx.RadioButton(self, label="10 sec",pos=(40,85))
        self.Bind(wx.EVT_RADIOBUTTON, self.SetLab3)

        extBtn = wx.Button(self, label="Exit",pos=(20,110))
        extBtn.Bind(wx.EVT_BUTTON, self.extFrame)

    def SetLab1(self,event):
        self.Show()
    def SetLab2(self,event):
        self.Show()
    def SetLab3(self,event):
        self.Show

    def extFrame(self,event):
        self.Close()

class MainPanel(wx.Panel):

    def __init__(self, parent):
        wx.Panel.__init__(self, parent=parent)
        self.frame = parent
        self.CenterOnParent()

        setBtn = wx.Button(self, label="Set",pos=(45,10))
        setBtn.Bind(wx.EVT_BUTTON, self.setFrame)

        self.redraw_timer = wx.Timer(self)
        self.Bind(wx.EVT_TIMER, self.on_redraw_timer, self.redraw_timer)        
        self.redraw_timer.Start(milliseconds=1000)


        def setFrame(self, event):
            SettingsFrame().Show()

        def on_redraw_timer(self, event):
            print "Test: "+time.ctime()

class MainFrame(wx.Frame): 

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY,size=(200,200))
        panel = MainPanel(self)
        self.CenterOnParent()

if __name__ == "__main__":
    app = wx.PySimpleApp()
    frame = MainFrame()
    frame.Show()
    app.MainLoop()

解决方法:

非pubsub版本

将更改计时器方法添加到MainPanel中,以更改计时器的起始值

创建SettingsFrame时,将MainPanel实例的引用传递给它.

将引用存储到SettingsFrame上的父对象.

正确的RadioButton 1从

self.radio2

至

self.radio1.

更改绑定,使它们像这样绑定到单选按钮本身

self.radio1.Bind(wx.EVT_RADIOBUTTON, self.SetLab1)

在事件句柄中,使用新值调用父更改计时器方法

self.parent.change_timer(1000)

这是完整的代码,以防万一我错过了更改的步骤之一

import wx
import time


class SettingsFrame(wx.Frame):

    def __init__(self, parent):
        wx.Frame.__init__(self, None, wx.ID_ANY, size=(100, 200))
        self.parent = parent
        self.CenterOnParent()
        self.SetBackgroundColour('#e4e4e4')

        self.radio1 = wx.RadioButton(self, label="1 sec", pos=(40, 45))
        self.radio1.Bind(wx.EVT_RADIOBUTTON, self.SetLab1)

        self.radio2 = wx.RadioButton(self, label="5 sec", pos=(40, 65))
        self.radio2.Bind(wx.EVT_RADIOBUTTON, self.SetLab2)

        self.radio3 = wx.RadioButton(self, label="10 sec", pos=(40, 85))
        self.radio3.Bind(wx.EVT_RADIOBUTTON, self.SetLab3)

        extBtn = wx.Button(self, label="Exit", pos=(20, 110))
        extBtn.Bind(wx.EVT_BUTTON, self.extFrame)

    def SetLab1(self, event):
        self.parent.change_timer(1000)

    def SetLab2(self, event):
        self.parent.change_timer(5000)

    def SetLab3(self, event):
        self.parent.change_timer(10000)

    def extFrame(self, event):
        self.Close()


class MainPanel(wx.Panel):

    def __init__(self, parent):
        wx.Panel.__init__(self, parent=parent)
        self.frame = parent
        self.CenterOnParent()

        setBtn = wx.Button(self, label="Set", pos=(45, 10))
        setBtn.Bind(wx.EVT_BUTTON, self.setFrame)

        self.redraw_timer = wx.Timer(self)
        self.Bind(wx.EVT_TIMER, self.on_redraw_timer, self.redraw_timer)
        self.redraw_timer.Start(milliseconds=1000)

    def setFrame(self, event):
        SettingsFrame(self).Show()

    def on_redraw_timer(self, event):
        print "Test: " + time.ctime()

    def change_timer(self, value):
        print 'Changing timer to:', value
        self.redraw_timer.Start(value)


class MainFrame(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, size=(200, 200))
        panel = MainPanel(self)
        self.CenterOnParent()

if __name__ == "__main__":
    app = wx.App(False)
    frame = MainFrame()
    frame.Show()
    app.MainLoop()

使用定制事件

这是使用从SettingsPanel发送的,可以绑定到MainPanel的自定义事件来完成此操作的另一种方法.

import time

import wx
from wx.lib.newevent import NewCommandEvent


TimerChangeEvent, EVT_TIMER_CHANGE = NewCommandEvent()


class SettingsFrame(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, size=(100, 200))
        self.CenterOnParent()
        self.SetBackgroundColour('#e4e4e4')

        self.radio1 = wx.RadioButton(self, label="1 sec", pos=(40, 45))
        self.radio1.Bind(wx.EVT_RADIOBUTTON, self.SetLab1)

        self.radio2 = wx.RadioButton(self, label="5 sec", pos=(40, 65))
        self.radio2.Bind(wx.EVT_RADIOBUTTON, self.SetLab2)

        self.radio3 = wx.RadioButton(self, label="10 sec", pos=(40, 85))
        self.radio3.Bind(wx.EVT_RADIOBUTTON, self.SetLab3)

        extBtn = wx.Button(self, label="Exit", pos=(20, 110))
        extBtn.Bind(wx.EVT_BUTTON, self.extFrame)

    def SetLab1(self, event):
        self.post_timer_change_event(1000)

    def SetLab2(self, event):
        self.post_timer_change_event(5000)

    def SetLab3(self, event):
        self.post_timer_change_event(10000)

    def post_timer_change_event(self, value):
        evt = TimerChangeEvent(self.Id, value=value)
        wx.PostEvent(self, evt)

    def extFrame(self, event):
        self.Close()


class MainPanel(wx.Panel):

    def __init__(self, parent):
        wx.Panel.__init__(self, parent=parent)
        self.frame = parent
        self.CenterOnParent()

        setBtn = wx.Button(self, label="Set", pos=(45, 10))
        setBtn.Bind(wx.EVT_BUTTON, self.setFrame)

        self.redraw_timer = wx.Timer(self)
        self.Bind(wx.EVT_TIMER, self.on_redraw_timer, self.redraw_timer)
        self.redraw_timer.Start(milliseconds=1000)

    def setFrame(self, event):
        settings_frame = SettingsFrame()
        settings_frame.Show()
        settings_frame.Bind(EVT_TIMER_CHANGE, self.on_change_timer)

    def on_redraw_timer(self, event):
        print "Test: " + time.ctime()

    def on_change_timer(self, event):
        value = event.value
        print 'Changing timer to:', value
        self.redraw_timer.Start(value)


class MainFrame(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, size=(200, 200))
        panel = MainPanel(self)
        self.CenterOnParent()

if __name__ == "__main__":
    app = wx.App(False)
    frame = MainFrame()
    frame.Show()
    app.MainLoop()

标签：publish-subscribe,timer,wxpython,python
来源： https://codeday.me/bug/20191122/2058115.html