wxSimpleDemo is a (you guessed it) simple demonstration of the basic components of a (simple) application in wxPython. It shows users how to set up a wx.Frame, initialize widgets and place them in sizers, and handling events all in a OOP context. In it's current state, there are few comments in the file. This is a Pythonic faux pas and a shortcoming of mine that I am going to rectify in future versions of this app.
Python (and wxPython, respectively) is an inherently readable language; I hope that you can understand what is going on in the code for the most part. I plan to write an in-depth breakdown of this file, so stay tuned for that. If you encounter any bugs or have suggestions/comments, please send me an e-mail, colin DOT barnette AT gmail
Download
The current version is 0.1.
Prerequisites
- Python 2.x @ http://www.python.org/download
- wxPython @ http://www.wxpython.org/download.php
wxSimpleDemo 0.1
Screenshot
Source Code
#!/usr/bin/python
import wx
# Create a class called MainFrame and have it derive properties (inherit)
# from wx.Frame.
class MainFrame(wx.Frame):
# Define our init function and require arguments that we will pass to
# wx.Frame.__init__()
def __init__(self, parent, ID, title, pos=wx.DefaultPosition,
size=wx.DefaultSize, style=wx.DEFAULT_FRAME_STYLE):
wx.Frame.__init__(self, parent, ID, title, pos, size, style)
label = "Click the button and change this text!\n(Or use the Menu..)"
# Initalize some controls..
self.panel = wx.Panel(self, -1, style=wx.BORDER_SUNKEN)
self.text = wx.StaticText(self.panel, -1, label,
style=wx.ALIGN_CENTER | wx.ST_NO_AUTORESIZE)
self.button = wx.Button(self.panel, -1, "Click me!")
self.panel.SetBackgroundColour(wx.WHITE)
# Initialize the menubar
menubar = wx.MenuBar()
self.menu = wx.Menu()
self.menu.Append(101, "&Edit text..", "Edit text")
self.menu.AppendSeparator()
self.menu.Append(102, "&Close", "Close")
menubar.Append(self.menu, "&Menu")
self.SetMenuBar(menubar)
# Initialize the statusbar
self.CreateStatusBar()
self.SetStatusText("")
# Initialize the sizers and fill them
sizer = wx.BoxSizer(wx.HORIZONTAL)
st = wx.StaticText(self.panel, -1, "")
sizer.Add(st, 1, wx.EXPAND, 0)
sizer.Add(self.button, 0, 0, 0)
st = wx.StaticText(self.panel, -1, "")
sizer.Add(st, 1, wx.EXPAND, 0)
st = wx.StaticText(self.panel, -1, "")
vsizer = wx.BoxSizer(wx.VERTICAL)
vsizer.Add(st, 1, wx.EXPAND, 0)
vsizer.Add(self.text, 1, wx.EXPAND | wx.ALL, 4)
vsizer.Add(sizer, 1, wx.EXPAND | wx.ALL, 4)
self.panel.SetSizerAndFit(vsizer)
# Bind our events.
self.Bind(wx.EVT_BUTTON, self.OnButton)
self.Bind(wx.EVT_MENU, self.OnMenu)
def OnMenu(self, event):
if event.GetId() == 101:
self.ShowEditDialog()
else:
self.OnClose(event)
def OnButton(self, event):
if event.GetId() == self.button.GetId():
self.ShowEditDialog()
def OnClose(self, event):
self.Close()
def ShowEditDialog(self):
dlg = EditDialog(self, -1, "Edit the StaticText..")
if dlg.ShowModal() == wx.ID_OK:
self.text.SetLabel(dlg.value)
self.SetStatusText("Label changed to \"" + dlg.value + "\".")
class EditDialog(wx.Dialog):
def __init__(self, parent, ID, title, pos=wx.DefaultPosition,
size=wx.DefaultSize, style=wx.DEFAULT_DIALOG_STYLE):
wx.Dialog.__init__(self, parent, ID, title, pos, size, style)
# Initialize some controls.
self.text = wx.TextCtrl(self, -1, "")
self.okay = wx.Button(self, wx.ID_OK)
self.cancel = wx.Button(self, wx.ID_CANCEL)
st = wx.StaticText(self, -1, "")
label = wx.StaticText(self, -1, "Enter text:")
hsizer = wx.BoxSizer(wx.HORIZONTAL)
hsizer.Add(st, 1, wx.EXPAND, 0)
hsizer.Add(self.okay, 0, wx.EXPAND, 0)
hsizer.Add(self.cancel, 0, wx.EXPAND, 0)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(label, 0, wx.EXPAND | wx.ALL, 4)
sizer.Add(self.text, 0, wx.EXPAND | wx.ALL, 4)
sizer.Add(hsizer, 0, wx.EXPAND | wx.ALL, 4)
self.SetSizerAndFit(sizer)
self.Bind(wx.EVT_BUTTON, self.OnButton)
def OnButton(self, event):
self.value = self.text.GetValue()
self.EndModal(event.GetId())
if __name__ == "__main__":
app = wx.App(redirect=False)
mainframe = MainFrame(None, -1, "wxSimpleDemo", size=(225, 200))
mainframe.Show()
app.MainLoop()