Added the sample code from wxPython In Action to the samples dir

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42925 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/samples/wxPIA_book/Chapter-09/progress_box.py

@@ -0,0 +1,33 @@
+import wx
+
+class Frame(wx.Frame):
+    def __init__(self, parent):
+        wx.Frame.__init__(self, parent, title="ProgressDialog sample")
+        self.progressMax = 100
+        self.count = 0
+        self.dialog = None
+        self.timer = wx.Timer(self)
+        self.Bind(wx.EVT_TIMER, self.OnTimer, self.timer)
+        self.timer.Start(1000)
+
+    def OnTimer(self, evt):
+        if not self.dialog:
+            self.dialog = wx.ProgressDialog("A progress box", "Time remaining",
+                                            self.progressMax,
+                                            style=wx.PD_CAN_ABORT
+                                            | wx.PD_ELAPSED_TIME
+                                            | wx.PD_REMAINING_TIME)
+
+        self.count += 1
+        keepGoing = self.dialog.Update(self.count)
+        if not keepGoing or self.count == self.progressMax:
+            self.dialog.Destroy()
+            self.timer.Stop()
+        
+
+if __name__ == "__main__":
+    app = wx.PySimpleApp()
+    frame = Frame(None)
+    frame.Show()
+    app.MainLoop()
+