Question

With wxPython a password field could be created as:

wx.TextCtrl(frm, -1, '', style=wx.TE_PASSWORD )

I’m wondering if there is a way to dynamically change this password field into a normal textctrl, such that user could see what the password is.

Answer 1

Its not possible to change the style flag after creating the control.

You can either destroy the control and create a new one without the password flag, or maintain two side by side in a sizer, with one always hidden. When you want to switch you can copy the text into the other text control, Hide one and Show the other then call Layout on the sizer.

import wx

class Frame(wx.Frame):
    def __init__(self,*args,**kwargs):
        wx.Frame.__init__(self,*args,**kwargs)
        panel= wx.Panel(self)
        self.password_shown= False

        sizer= wx.BoxSizer(wx.VERTICAL)
        self.password_sizer= wx.BoxSizer(wx.HORIZONTAL)
        self.text_password= wx.TextCtrl(panel,style=wx.TE_PASSWORD)
        self.password_sizer.Add(self.text_password,0,wx.ALL,5)
        self.text_no_password= wx.TextCtrl(panel)
        self.text_no_password.Hide()
        self.password_sizer.Add(self.text_no_password,0,wx.ALL,5)
        sizer.Add(self.password_sizer)
        self.button= wx.Button(panel,-1,"Toggle Password")
        sizer.Add(self.button,0,wx.ALL,5)
        self.button.Bind(wx.EVT_BUTTON,self.OnButton)
        panel.SetSizer(sizer)

        self.Show()

    def OnButton(self,event):
        self.text_password.Show(self.password_shown)
        self.text_no_password.Show(not self.password_shown)
        if not self.password_shown:
            self.text_no_password.SetValue(self.text_password.GetValue())
            self.text_no_password.SetFocus()
        else:
            self.text_password.SetValue(self.text_no_password.GetValue())
            self.text_password.SetFocus()
        self.text_password.GetParent().Layout()
        self.password_shown= not self.password_shown


if __name__ == "__main__":
    app= wx.App(0)
    Frame(None)
    app.MainLoop()