wxpython help ...

mjus

Hi ! below is a simple code that I modified from WWW.
as I run it, first time after I enter a number, it calcutes correct !
from second time on , regardless of whatever I enter a number, it calcutes wrong !
I trace it , seems self.tCalc.GetValue() not effect ! I'm confusing about it. please help
& indicate what it is going wrong here. thanks a lot.

#!/usr/bin/python
import wx

# --- Define a custom Frame, this will become the main window ---
class CalcFrame(wx.Frame):
   def __init__(self, parent, id, title, pos, size):
        wx.Frame.__init__(self, parent, id, title, pos, size)
       # we need a panel to get the right background
        panel = wx.Panel(self)

        # Now create the text and button widgets
        self.tCalc = wx.TextCtrl(panel, -1, "", pos=(3,3), size=(185,22))
        bClear = wx.Button(panel, -1, "Calc", pos=(15, 32))
        self.Bind(wx.EVT_BUTTON, self.OnCalc, bClear)
        bQuit = wx.Button(panel, -1, "Quit", pos=(100, 32))
        self.Bind(wx.EVT_BUTTON, self.OnQuit, bQuit)
   
   # these are our event handlers
   def OnCalc(self, event):
       print ".. 1 .."
       panel=wx.Panel(self)
       f=self.tCalc.GetValue()
       print 'f=',f
       c=5.0*(float(f) - 32.0)/9.0
       print 'c=',c
       self.tCalc = wx.TextCtrl(panel, -1, str(c), pos=(3,3), size=(185,22))
       #self.Update()
       print ".. 2 .."

   def OnQuit(self, event):
       self.Destroy()


# --- Define the Application Object ---
# Note that all wxPython programs MUST define an
# application class derived from wx.App
class CalcApp(wx.App):
   def OnInit(self):
       frame = CalcFrame(None, -1, "F2C", (200,50), (200,90) )
       frame.Show(True)
       self.SetTopWindow(frame)
       return True

# create instance and start the event loop
CalcApp(True,"debug.txt").MainLoop()

nietsche

1,不明白为何要定义两次panel = wx.Panel(self);
2,TextCtrl(),不是有SetValue()?为何不用之？

mjus

To Q1, inside Oncalc(), need a panel to use in self.tCalc = wx.TextCtrl(panel,...)

To Q2, I'm quite new to wxpython, please drop me a few of lines if you could. many thanks !!!

mjus

fixed it. done.