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我希望我的wxPython应用程序在文本输入小部件失去焦点时触发事件。我按照教程here,其中描述使用wx.EVT_KILL_FOCUS
。但是,我收到意想不到的行为。为什么wxPython的EVT_KILL_FOCUS的这种用法意外行为?
下面的代码工作正常:
import wx
class MyForm(wx.Frame):
def __init__(self):
wx.Frame.__init__(self, None, wx.ID_ANY, "Focus Tutorial 1a")
panel = wx.Panel(self, wx.ID_ANY)
txt = wx.TextCtrl(panel, wx.ID_ANY, "")
txt.Bind(wx.EVT_KILL_FOCUS, self.onTextKillFocus)
"""
This next line seems to be important for working correctly,
but I don't understand why:
"""
txt.Bind(wx.EVT_SET_FOCUS, self.onTextFocus)
btn = wx.Button(panel, wx.ID_ANY, "Test")
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(txt, 0, wx.ALL, 5)
sizer.Add(btn, 0, wx.ALL, 5)
panel.SetSizer(sizer)
def onTextFocus(self, event):
print "text received focus!"
def onTextKillFocus(self, event):
print "text lost focus!"
if __name__ == '__main__':
app = wx.App()
frame = MyForm().Show()
app.MainLoop()
当我标签来回从文本控制按钮,或者点击或缩小文本控制的,我获得焦点的消息我的期望。
然而,当我提出以下(?合理的)编辑,事情南下:
import wx
class MyForm(wx.Frame):
def __init__(self):
wx.Frame.__init__(self, None, wx.ID_ANY, "Focus Tutorial 1a")
panel = wx.Panel(self, wx.ID_ANY)
txt = wx.TextCtrl(panel, wx.ID_ANY, "")
txt.Bind(wx.EVT_KILL_FOCUS, self.onTextKillFocus)
"""
This next line seems to be important for working correctly,
but I don't understand why:
"""
## txt.Bind(wx.EVT_SET_FOCUS, self.onTextFocus)
btn = wx.Button(panel, wx.ID_ANY, "Test")
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(txt, 0, wx.ALL, 5)
sizer.Add(btn, 0, wx.ALL, 5)
panel.SetSizer(sizer)
def onTextFocus(self, event):
print "text received focus!"
def onTextKillFocus(self, event):
print "text lost focus!"
if __name__ == '__main__':
app = wx.App()
frame = MyForm().Show()
app.MainLoop()
意外的行为是,当我试图改变焦点从文本框到别的(Tab键或鼠标点击),'text lost focus!'
消息打印一次,永不再次,我不能再编辑文本控件的内容。
这是预期的行为?如果不是,我做错了什么?
Python版本2.7,wxPython的版本3.0.0.0,Windows 7的64位
我试过修改后的代码,并在tabb我得到文本失去焦点重复只要我选项卡,但我使用的是wxPython 2.9.5.0。我无法用3.0测试,但它听起来像一个错误。 – pedram
尝试将** event.Skip()**添加到** onTextKillFocus **和** onTextFocus **的末尾。 –
迈克Driscoll,那工作。谢谢!如果您想将此作为答案,我会接受它。我不明白什么是错的,或者它为什么起作用,所以如果你能解决任何问题,我也会很感激。 – Andrew