.GetValue() is not working for TextCtrl in this particular case

Question

hey folks using Python i have bind the radio button and when that's clicked the TextCtrl is called upon but after I type in TextCtrl i am not able to get the string that has been entered, My code goes like this

def A(self,event):
    radiobut = wx.RadioButton(self.nameofframe, label = 'Opt-1', pos = (10,70),size= (90,-1))
    self.Bind(wx.EVT_RADIOBUTTON,self.B,radiobut)
def B(self,event):
    Str1 = wx.TextCtrl(self.nameofframe,pos = (100,70), size=(180,-1))
    print Str1.GetValue()

Could anyone please tell me where is the problem . Why can't i get it printed ?

Answer 1

Radio button usually comes within a group, one or more more than one, and one at least should clicked but you have only one button. What is usually used in such case is a check box, CheckBox.

In this example, it prints the text entered in TextCtrl when a CheckBox is activated:

#!python
# -*- coding: utf-8 -*-

import wx

class MyFrame(wx.Frame):
  def __init__(self, title):
    super(MyFrame, self).__init__(None, title=title)

    panel = wx.Panel(self)
    self.check = wx.CheckBox(panel, label='confiurm?', pos =(10,70), size=(90,-1))
    self.text  = wx.TextCtrl(panel, pos=(100,70), size=(180,-1))
    # disable the button until the user enters something
    self.check.Disable()

    self.Bind(wx.EVT_CHECKBOX, self.OnCheck, self.check)
    self.Bind(wx.EVT_TEXT, self.OnTypeText, self.text)

    self.Centre()

  def OnTypeText(self, event):
    '''
    OnTypeText is called when the user types some string and
    activate the check box if there is a string.
    '''
    if( len(self.text.GetValue()) > 0 ):
      self.check.Enable()
    else:
      self.check.Disable()

  def OnCheck(self, event):
    '''
    Print the user input if he clicks the checkbox.
    '''
    if( self.check.IsChecked() ):
      print(self.text.GetValue())

class MyApp(wx.App):
  def OnInit(self):
    self.frame = MyFrame('Example')
    self.frame.Show()
    return True

MyApp(False).MainLoop()

This is how it works:

Answer 2

Str1.GetValue() will be empty because when the radio button is clicked you are creating a new TextCtrl and then immediatly getting its value, it will be empty as the user has not been able to type anything in it yet.

Answer 3

Here is the usual way of doing it.

Create the text control when you create the frame. Save a pointer ( sorry C++ - whatever you do with python ) to the text control and bind a method to the EVT_TEXT_ENTER event. When the event fires, you can read what the user typed.

If you want to control when and when not the text control is visible, use the hide() method.