How to use the cefpython3.wx.chromectrl function in cefpython3

def OnClose(self, event):
        # Remember to destroy all CEF browser references before calling
        # Destroy(), so that browser closes cleanly. In this specific
        # example there are no references kept, but keep this in mind
        # for the future.
        self.Destroy()
        # On Mac the code after app.MainLoop() never executes, so
        # need to call CEF shutdown here.
        if platform.system() == "Darwin":
            chrome.Shutdown()
            wx.GetApp().Exit()

# in this example we dont want reload button
        self.GetReloadButton().Hide()
        self.SetSizer(sizer)
        self.Fit()


class MyApp(wx.App):
    def OnInit(self):
        frame = MainFrame()
        self.SetTopWindow(frame)
        frame.Show()
        return True


if __name__ == '__main__':
    chrome.Initialize()
    print('sample3.py: wx.version=%s' % wx.version())
    app = MyApp()
    app.MainLoop()
    # Important: do the wx cleanup before calling Shutdown
    del app
    # On Mac Shutdown is called in OnClose
    if platform.system() in ["Linux", "Windows"]:
        chrome.Shutdown()

def OnClose(self, event):
        # Remember to destroy all CEF browser references before calling
        # Destroy(), so that browser closes cleanly. In this specific
        # example there are no references kept, but keep this in mind
        # for the future.
        self.Destroy()
        # On Mac the code after app.MainLoop() never executes, so
        # need to call CEF shutdown here.
        if platform.system() == "Darwin":
            chrome.Shutdown()
            wx.GetApp().Exit()

def OnClose(self, event):
        # Remember to destroy all CEF browser references before calling
        # Destroy(), so that browser closes cleanly. In this specific
        # example there are no references kept, but keep this in mind
        # for the future.
        self.Destroy()
        # On Mac the code after app.MainLoop() never executes, so
        # need to call CEF shutdown here.
        if platform.system() == "Darwin":
            chrome.Shutdown()
            wx.GetApp().Exit()

self.Destroy()
        # On Mac the code after app.MainLoop() never executes, so
        # need to call CEF shutdown here.
        if platform.system() == "Darwin":
            chrome.Shutdown()
            wx.GetApp().Exit()

class MyApp(wx.App):
    def OnInit(self):
        frame = MainFrame()
        self.SetTopWindow(frame)
        frame.Show()
        return True

if __name__ == '__main__':
    chrome.Initialize({
        "debug": True,
        "log_file": "debug.log",
        "log_severity": chrome.cefpython.LOGSEVERITY_INFO,
        "release_dcheck_enabled": True,
        # "cache_path": "webcache/",
    })
    print('[sample1.py] wx.version=%s' % wx.version())
    app = MyApp(False)
    app.MainLoop()
    # Important: do the wx cleanup before calling Shutdown
    del app
    # On Mac Shutdown is called in OnClose
    if platform.system() in ["Linux", "Windows"]:
        chrome.Shutdown()

chrome.Initialize()
    if platform.system() == "Linux":
        # CEF initialization fails intermittently on Linux during
        # launch of a subprocess (Issue 131). The solution is
        # to offload cpu for half a second after Initialize
        # has returned (it still runs some stuff in its thread).
        import time
        time.sleep(0.5)
    print('sample2.py: wx.version=%s' % wx.version())
    app = MyApp(False)
    app.MainLoop()
    # Important: do the wx cleanup before calling Shutdown
    del app
    # On Mac Shutdown is called in OnClose
    if platform.system() in ["Linux", "Windows"]:
        chrome.Shutdown()

def __init__(self, parent, url):
        wx.Frame.__init__(self, parent)
        self.sizer = wx.BoxSizer(wx.HORIZONTAL)

        if HAS_CHROME:
            self.browser = browser.ChromeWindow(self, url)
        else:
            self.browser = browser.WebView.New(parent=self, url=url, name='LalkaWebViewGui')

        self.sizer.Add(self.browser, 1, wx.EXPAND)

        self.SetSizer(self.sizer)
        self.Show()
        self.SetFocus()

if __name__ == '__main__':
    chrome.Initialize({
        "debug": True,
        "log_file": "debug.log",
        "log_severity": chrome.cefpython.LOGSEVERITY_INFO,
        "release_dcheck_enabled": True,
        # "cache_path": "webcache/",
    })
    print('[sample1.py] wx.version=%s' % wx.version())
    app = MyApp(False)
    app.MainLoop()
    # Important: do the wx cleanup before calling Shutdown
    del app
    # On Mac Shutdown is called in OnClose
    if platform.system() in ["Linux", "Windows"]:
        chrome.Shutdown()

def __init__(self):
        wx.Frame.__init__(self, parent=None, id=wx.ID_ANY,
                          title='cefwx example1', size=(800,600))

        self.cefWindow = chrome.ChromeWindow(self,
                url=os.path.join(os.path.dirname(os.path.abspath(__file__)),
                                 "sample1.html"))

        sizer = wx.BoxSizer()
        sizer.Add(self.cefWindow, 1, wx.EXPAND, 0)
        self.SetSizer(sizer)

        self.Bind(wx.EVT_CLOSE, self.OnClose)

def OnSelChanged(self, event):
        self.item = event.GetItem()
        url = self.tree.GetItemText(self.item)
        if url and url != ROOT_NAME:
            cefPanel = chrome.ChromeCtrl(self.tabs, useTimer=True, url=str(url))
            self.tabs.AddPage(cefPanel, url)
            self.tabs.SetSelection(self.tabs.GetPageCount()-1)
        event.Skip()