如何使用 wxPython 创建 cmd？

Question

我正在尝试在 wxPython 中创建一个 cmd，它的执行类似于 windows 上的 cmd，它具有相同的功能，但我也可以在其中添加我自己的命令。 我试过这段代码，但它给了我所有类型的警告和错误：

import wx
import subprocess

class MyFrame(wx.Frame):
    def __init__(self, *args, **kwds):
        # begin wxGlade: MyFrame.__init__
        kwds["style"] = wx.DEFAULT_FRAME_STYLE
        wx.Frame.__init__(self, *args, **kwds)

        self.prompt = "user@stackOvervlow:~ "
        self.textctrl = wx.TextCtrl(self, -1, '', style=wx.TE_PROCESS_ENTER|wx.TE_MULTILINE)
        self.default_txt = self.textctrl.GetDefaultStyle()
        self.textctrl.AppendText(self.prompt)

        self.__set_properties()
        self.__do_layout()
        self.__bind_events()


    def __bind_events(self):
        self.Bind(wx.EVT_TEXT_ENTER, self.__enter)


    def __enter(self, e):
        self.value = (self.textctrl.GetValue())
        self.eval_last_line()
        e.Skip()


    def __set_properties(self):
        self.SetTitle("Poor Man's Terminal")
        self.SetSize((800, 600))
        self.textctrl.SetFocus()

    def __do_layout(self):
        sizer_1 = wx.BoxSizer(wx.VERTICAL)
        sizer_1.Add(self.textctrl, 1, wx.EXPAND, 0)
        self.SetSizer(sizer_1)
        self.Layout()

    def eval_last_line(self):
        nl = self.textctrl.GetNumberOfLines()
        ln =  self.textctrl.GetLineText(nl-1)
        ln = ln[len(self.prompt):]
        args = ln.split(" ")

        proc = subprocess.Popen(args, stdout=subprocess.PIPE)
        retvalue = proc.communicate()[0]

        c = wx.Colour(239, 177, 177)
        tc = wx.TextAttr(c)
        self.textctrl.SetDefaultStyle(tc)
        self.textctrl.AppendText(retvalue)
        self.textctrl.SetDefaultStyle(self.default_txt)
        self.textctrl.AppendText(self.prompt)
        self.textctrl.SetInsertionPoint(GetLastPosition() - 1)

if __name__ == "__main__":
    app = wx.PySimpleApp(0)
    wx.InitAllImageHandlers()
    frame_1 = MyFrame(None, -1, "")
    app.SetTopWindow(frame_1)
    frame_1.Show()
    app.MainLoop()

我在 wxPython 中需要这个，因为我还想在 cmd 旁边创建按钮。我怎样才能创建这个？谢谢

Answer 1

做你的

        self.textctrl.SetInsertionPoint(GetLastPosition() - 1)

到

        self.textctrl.SetInsertionPoint(self.textctrl.GetLastPosition() - 1)

---

将您的代码更改为此，我更正了问题。它正在生成错误，因为 EVT_TEXT_ENTER 事件将换行符附加到文本框中，这里我使用 EVT_CHAR 通过使输入发生在self.prompt:

import wx
import subprocess

class MyFrame(wx.Frame):
  def __init__(self, *args, **kwds):
    # begin wxGlade: MyFrame.__init__
    kwds["style"] = wx.DEFAULT_FRAME_STYLE
    wx.Frame.__init__(self, *args, **kwds)

    self.prompt = "user@stackOvervlow:~"
    self.textctrl = wx.TextCtrl(self, -1, '', style=wx.TE_PROCESS_ENTER|wx.TE_MULTILINE)
    self.default_txt = self.textctrl.GetDefaultStyle()
    self.textctrl.AppendText(self.prompt)

    self.textctrl.Bind(wx.EVT_CHAR, self.__bind_events)
    self.__set_properties()
    self.__do_layout()


  def __bind_events(self,e):
    if e.GetKeyCode() == 13:
        self.value = (self.textctrl.GetValue())
        self.eval_last_line()
        self.textctrl.WriteText(self.prompt)
    else:
              e.Skip()

  def __set_properties(self):
    self.SetTitle("Poor Man's Terminal")
    self.SetSize((800, 600))
    self.textctrl.SetFocus()

  def __do_layout(self):
    sizer_1 = wx.BoxSizer(wx.VERTICAL)
    sizer_1.Add(self.textctrl, 1, wx.EXPAND, 0)
    self.SetSizer(sizer_1)
    self.Layout()

  def eval_last_line(self):

    nl = self.textctrl.GetNumberOfLines()
    ln =  self.textctrl.GetLineText(nl-1)
    ln = ln[len(self.prompt):]
    args = ln.split(" ")

    proc = subprocess.Popen(args, stdout=subprocess.PIPE)
    retvalue = proc.communicate()[0]

    c = wx.Colour(239, 177, 177)
    tc = wx.TextAttr(c)
    self.textctrl.SetDefaultStyle(tc)
    self.textctrl.AppendText("\n"+retvalue)
    self.textctrl.SetDefaultStyle(self.default_txt)

 if __name__ == "__main__":
   app = wx.PySimpleApp(0)
   wx.InitAllImageHandlers()
   frame_1 = MyFrame(None, -1, "")
   app.SetTopWindow(frame_1)
   frame_1.Show()
   app.MainLoop()