wxPython combo.ComboCtrl事件处理问题
我有一个myComboCtrl(combo.ComboCtrl)对象,我想对与之链接的ComboPopup对象中的值的更改做出反应-单击后,我想根据myComboCtrl中的值更新框架的一部分。因此,基于: 我知道我需要将事件发送到ComboCtrl事件处理程序。据我所知,发送事件可以通过两种方式完成,一种是EventHandler的ProcessEvent方法,另一种是使用PostEvent 因此,在我的ComboPopup(从ListCtrl派生)中,我试图触发事件wxPython combo.ComboCtrl事件处理问题,wxpython,Wxpython,我有一个myComboCtrl(combo.ComboCtrl)对象,我想对与之链接的ComboPopup对象中的值的更改做出反应-单击后,我想根据myComboCtrl中的值更新框架的一部分。因此,基于: 我知道我需要将事件发送到ComboCtrl事件处理程序。据我所知,发送事件可以通过两种方式完成,一种是EventHandler的ProcessEvent方法,另一种是使用PostEvent 因此,在我的ComboPopup(从ListCtrl派生)中,我试图触发事件 def SetStri
def SetStringValue(self, val):
idx = self.FindItem(-1, val)
if idx != wx.NOT_FOUND:
self.Select(idx)
myComboCtrlEventHandler = self.GetCombo().GetEventHandler()
myEvent = wx.CommandEvent(0, wx.EVT_COMBOBOX.typeId)
myComboCtrlEventHandler.ProcessEvent(myEvent)
ComboCtrl已通过以下方式绑定:
self.myComboCtrl.Bind(wx.EVT_COMBOBOX, self.DoSomethin,None,wxID_MYCOMBOCTRLID)
DoSomethin函数内部只有一个wx.MessageBox。当我运行代码时,单击弹出窗口上的项目可以正确地触发SetStringValue,但什么也没有发生。我做错了什么
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下面是一个示例源文件,它显示了我的问题。我希望ComboCtrl的操作方式与通用ComboBox的操作方式相同,但遗憾的是,我无法使该事件正常工作
import wx
import wx.combo
[wxID_MYFRAME, wxID_MYFRAMECOMBOBOX1, wxID_MYFRAMECOMBOBOX2, wxID_MYFRAMEPANEL1,
wxID_MYFRAMESTATICTEXT1, wxID_MYFRAMESTATICTEXT2,
] = [wx.NewId() for _init_ctrls in range(6)]
######################################################################################
class ListCtrlComboPopup(wx.ListCtrl, wx.combo.ComboPopup):
def __init__(self):
self.PostCreate(wx.PreListCtrl())
wx.combo.ComboPopup.__init__(self)
def AddItem(self, txt):
self.InsertStringItem(self.GetItemCount(), txt)
def OnMotion(self, evt):
item, flags = self.HitTest(evt.GetPosition())
if item >= 0:
self.Select(item)
self.curitem = item
def OnLeftDown(self, evt):
self.value = self.curitem
self.Dismiss()
def Init(self):
self.value = -1
self.curitem = -1
def Create(self, parent):
wx.ListCtrl.Create(self, parent,
style=wx.LC_LIST|wx.LC_SINGLE_SEL|wx.SIMPLE_BORDER)
self.Bind(wx.EVT_MOTION, self.OnMotion)
self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
return True
def GetControl(self):
return self
def SetStringValue(self, val):
idx = self.FindItem(-1, val)
if idx != wx.NOT_FOUND:
self.Select(idx)
myComboCtrlEventHandler = self.GetCombo().GetEventHandler()
myEvent = wx.CommandEvent(winid=0, commandType=wx.EVT_COMBOBOX.typeId)
myComboCtrlEventHandler.ProcessEvent(myEvent)
def GetStringValue(self):
if self.value >= 0:
return self.GetItemText(self.value)
return ""
def OnPopup(self):
wx.combo.ComboPopup.OnPopup(self)
def OnDismiss(self):
wx.combo.ComboPopup.OnDismiss(self)
######################################################################################
class myFrame(wx.Frame):
def __init__(self, objParent):
myChoices = ['one','two','three','four']
wx.Frame.__init__(self, id=wxID_MYFRAME, name='', parent=objParent,
pos=wx.Point(515, 255), size=wx.Size(258, 129),
style=wx.DEFAULT_FRAME_STYLE, title='MYFRAME')
self.panel1 = wx.Panel(id=wxID_MYFRAMEPANEL1, name='panel1', parent=self,
pos=wx.Point(0, 0), size=wx.Size(250, 102),
style=wx.TAB_TRAVERSAL)
self.comboBox1 = wx.ComboBox(choices=myChoices, id=wxID_MYFRAMECOMBOBOX1,
name='comboBox1', parent=self.panel1, pos=wx.Point(32, 24),
size=wx.Size(130, 21), style=0, value='comboBox1')
self.comboBox2 = wx.combo.ComboCtrl(id=wxID_MYFRAMECOMBOBOX2,
name='comboBox2', parent=self.panel1, pos=wx.Point(32, 56),
size=wx.Size(130, 21), style=0, value='comboBox2')
self.staticText1 = wx.StaticText(id=wxID_MYFRAMESTATICTEXT1,
label='staticText1', name='staticText1', parent=self.panel1,
pos=wx.Point(176, 24), size=wx.Size(54, 13), style=0)
self.staticText2 = wx.StaticText(id=wxID_MYFRAMESTATICTEXT2,
label='staticText2', name='staticText2', parent=self.panel1,
pos=wx.Point(176, 56), size=wx.Size(54, 13), style=0)
myComboPopup = ListCtrlComboPopup()
self.comboBox2.SetPopupControl(myComboPopup)
for i in range(len(myChoices)):
print type(myChoices[i])
myComboPopup.AddItem(myChoices[i])
self.comboBox1.Bind(wx.EVT_COMBOBOX, self.OnCb1Click,None,wxID_MYFRAMECOMBOBOX1)
self.comboBox2.Bind(wx.EVT_COMBOBOX, self.OnCb2Click,None,wxID_MYFRAMECOMBOBOX2)
def OnCb1Click(self, event):
del self.staticText1
self.staticText1 = wx.StaticText(id=wxID_MYFRAMESTATICTEXT1,
label=self.comboBox1.GetValue(), parent=self.panel1,
pos=wx.Point(176, 24), size=wx.Size(54, 13), style=0)
event.Skip()
def OnCb2Click(self, event):
del self.staticText2
self.staticText2 = wx.StaticText(id=wxID_MYFRAMESTATICTEXT1,
label=self.comboBox2.GetValue(), parent=self.panel1,
pos=wx.Point(176, 24), size=wx.Size(54, 13), style=0)
event.Skip()
######################################################################################
def main():
app = wx.PySimpleApp()
myFrameObj = myFrame(None)
myFrameObj.Show()
app.MainLoop()
if __name__ == '__main__':
main()
创建事件时传入了错误的参数 应该是:
myEvent = wx.CommandEvent(wx.EVT_COMBOBOX.typeId)
下面是“CommandEvent”类的源代码:
编辑:
它应该可以工作,请尝试这个简单的演示
import wx
def cbEvent(evt):
print "cbEvent"
def btnEvent(evt):
print "btnEvent"
myComboCtrlEventHandler = cb.GetEventHandler()
myEvent = wx.CommandEvent(wx.EVT_COMBOBOX.typeId)
myComboCtrlEventHandler.ProcessEvent(myEvent)
if __name__=='__main__':
app = wx.App(redirect=False)
frame = wx.Frame(None)
p = wx.Panel(frame)
cb = wx.ComboBox(p, 500, "default value", (90, 50), (160, -1), "test")
cb.Bind(wx.EVT_COMBOBOX, cbEvent)
bt = wx.Button(p, -1, "btn", (90,100))
bt.Bind(wx.EVT_BUTTON, btnEvent)
frame.Show()
app.MainLoop()
编辑2:
创建事件时,应分配正确的ID。
当绑定事件时,还应该分配正确的ID
myEvent = wx.CommandEvent(winid=self.GetId(), commandType=wx.EVT_COMBOBOX.typeId)
self.comboBox2.Bind(wx.EVT_COMBOBOX, self.OnCb2Click,None,myComboPopup.GetId())
或者,您可以不使用它们(默认为wx.ID_ANY):
两个都用代码进行了测试:)好的,我已经更改了那一行,但是仍然没有发生任何事情。尝试像这样绑定事件:self.myComboCtrl.bind(wx.EVT_COMBOBOX,self.DoSomethin)是的,您发布的编辑可能会起作用,问题是您将事件附加到wx控件,而我在wx.combo控件上遇到问题。我的事件可以很好地用于按钮、listCtrls等,只是combo.ComboCtrl似乎在做idk。我已经发布了一个包含该活动的示例代码,请检查该代码:)
myEvent = wx.CommandEvent(winid=self.GetId(), commandType=wx.EVT_COMBOBOX.typeId)
self.comboBox2.Bind(wx.EVT_COMBOBOX, self.OnCb2Click,None,myComboPopup.GetId())
myEvent = wx.CommandEvent(commandType=wx.EVT_COMBOBOX.typeId)
self.comboBox2.Bind(wx.EVT_COMBOBOX, self.OnCb2Click)