wxPython:绑定wx.EVT_CHAR_HOOK禁用TextCtrl退格 [英] wxPython: binding wx.EVT_CHAR_HOOK disables TextCtrl backspace
问题描述
我有一个wx.TextCtrl,我想要能够输入,但也可以检测按键,如UP,DOWN,RETURN,ESC。
I have a wx.TextCtrl and I want to be able to type in it, but also detect key presses such as UP, DOWN, RETURN, ESC.
所以我绑定wx.EVT_KEY_DOWN来识别任何按键,wx.EVT_CHAR_HOOK做同样的事情,即使TextCtrl有焦点。
So I binded wx.EVT_KEY_DOWN to recognize any key press, and wx.EVT_CHAR_HOOK to do the same thing even when TextCtrl has focus.
self.Bind(wx.EVT_KEY_DOWN, self.keyPressed)
self.Bind(wx.EVT_CHAR_HOOK, self.keyPressed)
按键UP,DOWN,RETURN,ESC被识别并工作正常,但由于绑定EVT_CHAR_HOOK当我输入TextCtrl时,我不能使用LEFT RIGHT BACKSPACE SHIFT。
Key presses UP, DOWN, RETURN, ESC were recognized and working fine, but due to binding EVT_CHAR_HOOK I cannot use LEFT RIGHT BACKSPACE SHIFT anymore when I type in the TextCtrl.
任何建议?
推荐答案
您应该在事件处理程序的末尾调用 event.Skip()
来进一步传播。这对我有用:
You should call event.Skip()
at the end of the event handler to propagate it further. This works for me:
import wx
class MainWindow(wx.Frame):
def __init__(self, *args, **kwargs):
wx.Frame.__init__(self, *args, **kwargs)
self.panel = wx.Panel(self)
self.text = wx.TextCtrl(self.panel)
self.text.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)
self.text.Bind(wx.EVT_KEY_UP, self.OnKeyUp)
self.sizer = wx.BoxSizer()
self.sizer.Add(self.text, 1)
self.panel.SetSizerAndFit(self.sizer)
self.Show()
def OnKeyDown(self, e):
code = e.GetKeyCode()
if code == wx.WXK_ESCAPE:
print("Escape")
if code == wx.WXK_UP:
print("Up")
if code == wx.WXK_DOWN:
print("Down")
e.Skip()
def OnKeyUp(self, e):
code = e.GetKeyCode()
if code == wx.WXK_RETURN:
print("Return")
e.Skip()
app = wx.App(False)
win = MainWindow(None)
app.MainLoop()
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