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-16/html_help.py

@@ -0,0 +1,59 @@
+"""
+wxPython can use html files for online help or other forms of
+documentation for your application.  The help can be organized as a
+collection of books, and there is a help viewer available that enables
+the user to browse by book, via an index or full text search.  The
+format of the contents and index files are similar to Microsoft
+HtmlHelp.
+"""
+
+import wx
+import wx.html
+
+class MyHtmlFrame(wx.Frame):
+    def __init__(self, parent, title):
+        wx.Frame.__init__(self, parent, -1, title)
+        p = wx.Panel(self)
+        b1 = wx.Button(p, -1, "Show Help Contents")
+        b2 = wx.Button(p, -1, "Show Help Index")
+        b3 = wx.Button(p, -1, "Show Specific Help")
+        self.Bind(wx.EVT_BUTTON, self.OnShowHelpContents, b1)
+        self.Bind(wx.EVT_BUTTON, self.OnShowHelpIndex, b2)
+        self.Bind(wx.EVT_BUTTON, self.OnShowSpecificHelp, b3)
+
+        sizer = wx.BoxSizer(wx.VERTICAL)
+        sizer.Add((10,10))
+        sizer.Add(b1, 0, wx.ALL, 10)
+        sizer.Add(b2, 0, wx.ALL, 10)
+        sizer.Add(b3, 0, wx.ALL, 10)
+        p.SetSizer(sizer)
+        
+        self.InitHelp()
+
+
+    def InitHelp(self):
+        def _addBook(filename):
+            if not self.help.AddBook(filename):
+                wx.MessageBox("Unable to open: " + filename,
+                              "Error", wx.OK|wx.ICON_EXCLAMATION)
+
+        self.help = wx.html.HtmlHelpController()
+
+        _addBook("helpfiles/testing.hhp")
+        _addBook("helpfiles/another.hhp")
+
+
+    def OnShowHelpContents(self, evt):
+        self.help.DisplayContents()
+
+    def OnShowHelpIndex(self, evt):
+        self.help.DisplayIndex()
+
+    def OnShowSpecificHelp(self, evt):
+        self.help.Display("sub book")
+
+
+app = wx.PySimpleApp()
+frm = MyHtmlFrame(None, "HTML Help")
+frm.Show()
+app.MainLoop()