wxPython，我如何触发事件？答案

【问题标题】：wxPython, how do I fire events?wxPython，我如何触发事件？
【发布时间】：2009-07-14 21:12:58
【问题描述】：

我正在制作自己的按钮类，这是我用 DC 绘制的面板的子类，当我的自定义按钮被按下时，我需要触发 wx.EVT_BUTTON。我该怎么做？

【问题讨论】：

【解决方案1】：

Wiki 非常适合参考。 Andrea Gavana 有一个非常完整的配方来构建你自己的custom controls。以下内容直接取自那里并扩展了 FogleBird answered with（注意 self 指的是 wx.PyControl 的子类）：

def SendCheckBoxEvent(self):
    """ Actually sends the wx.wxEVT_COMMAND_CHECKBOX_CLICKED event. """

    # This part of the code may be reduced to a 3-liner code
    # but it is kept for better understanding the event handling.
    # If you can, however, avoid code duplication; in this case,
    # I could have done:
    #
    # self._checked = not self.IsChecked()
    # checkEvent = wx.CommandEvent(wx.wxEVT_COMMAND_CHECKBOX_CLICKED,
    #                              self.GetId())
    # checkEvent.SetInt(int(self._checked))
    if self.IsChecked():

        # We were checked, so we should become unchecked
        self._checked = False

        # Fire a wx.CommandEvent: this generates a
        # wx.wxEVT_COMMAND_CHECKBOX_CLICKED event that can be caught by the
        # developer by doing something like:
        # MyCheckBox.Bind(wx.EVT_CHECKBOX, self.OnCheckBox)
        checkEvent = wx.CommandEvent(wx.wxEVT_COMMAND_CHECKBOX_CLICKED,
                                     self.GetId())

        # Set the integer event value to 0 (we are switching to unchecked state)
        checkEvent.SetInt(0)

    else:

        # We were unchecked, so we should become checked
        self._checked = True

        checkEvent = wx.CommandEvent(wx.wxEVT_COMMAND_CHECKBOX_CLICKED,
                                     self.GetId())

        # Set the integer event value to 1 (we are switching to checked state)
        checkEvent.SetInt(1)

    # Set the originating object for the event (ourselves)
    checkEvent.SetEventObject(self)

    # Watch for a possible listener of this event that will catch it and
    # eventually process it
    self.GetEventHandler().ProcessEvent(checkEvent)

    # Refresh ourselves: the bitmap has changed
    self.Refresh()

【讨论】：

【解决方案2】：

创建一个 wx.CommandEvent 对象，调用它的 setter 来设置适当的属性，并将它传递给 wx.PostEvent。

http://docs.wxwidgets.org/stable/wx_wxcommandevent.html#wxcommandeventctor

http://docs.wxwidgets.org/stable/wx_miscellany.html#wxpostevent

这是重复的，这里有更多关于构造这些对象的信息：

wxPython: Calling an event manually

【讨论】：

你能给我更详细的解释吗？实际上，我不过是个新手。另外，谢谢你的回答。