Question

我正在创建自己的按钮类，我用DC绘制的面板的子类，我需要在按下自定义按钮时触发wx.EVT_BUTTON。我该怎么做？

Answer 1

Wiki非常适合参考。 Andrea Gavana有一个非常完整的方法来构建你自己的custom controls。以下是从那里直接获取并扩展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()

Answer 2

创建一个wx.CommandEvent对象，调用其setter来设置适当的属性，并将其传递给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，这里有关于构造这些对象的更多信息：

wxPython: Calling an event manually

wxPython，我该如何解雇事件？

2 个答案: