added html help viewer sample

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4278 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/html/helpview/helpview.cpp

@@ -0,0 +1,88 @@
+
+/////////////////////////////////////////////////////////////////////////////
+// Name:        helpview.cpp
+// Purpose:     wxHtml help browser
+/////////////////////////////////////////////////////////////////////////////
+
+#ifdef __GNUG__
+#pragma implementation "help.cpp"
+#pragma interface "help.cpp"
+#endif
+
+// For compilers that support precompilation, includes "wx/wx.h".
+#include <wx/wxprec.h>
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
+// for all others, include the necessary headers (this file is usually all you
+// need because it includes almost all "standard" wxWindows headers
+#ifndef WX_PRECOMP
+#include <wx/wx.h>
+#endif
+
+#include <wx/image.h>
+#include <wx/wxhtml.h>
+#include <wx/fs_zip.h>
+
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+
+// Define a new application type, each program should derive a class from wxApp
+class MyApp : public wxApp
+{
+    public:
+        // override base class virtuals
+        // ----------------------------
+
+        // this one is called on application startup and is a good place for the app
+        // initialization (doing it here and not in the ctor allows to have an error
+        // return: if OnInit() returns false, the application terminates)
+
+        virtual bool OnInit();
+        virtual int OnExit();
+
+    private:
+        wxHtmlHelpController *help;
+        wxConfig* config;
+};
+
+
+IMPLEMENT_APP(MyApp)
+
+
+bool MyApp::OnInit()
+{
+    wxInitAllImageHandlers();
+    wxFileSystem::AddHandler(new wxZipFSHandler);
+
+    config = new wxConfig("wxHTMLhelp");
+    help = new wxHtmlHelpController;
+    help -> UseConfig(config);
+    
+    if (argc < 2) {
+        wxLogError("Usage : helpview <helpfile> [<more helpfiles>]");
+        wxLogError("  helpfile may be .hhp, .zip or .htb");
+        return FALSE;
+    }
+
+    for (int i = 1; i < argc; i++)
+        help -> AddBook(argv[i]);
+
+    help -> DisplayContents();
+
+    return TRUE;
+}
+
+
+int MyApp::OnExit()
+{
+    delete help;
+    delete config;
+
+    return 0;
+}
+