samples/html/help/help.cpp

   1
   2 /////////////////////////////////////////////////////////////////////////////
   3 // Name:        test.cpp
   4 // Purpose:     wxHtml testing example
   5 /////////////////////////////////////////////////////////////////////////////
   6
   7 #ifdef __GNUG__
   8     #pragma implementation "help.cpp"
   9     #pragma interface "help.cpp"
  10 #endif
  11
  12 // For compilers that support precompilation, includes "wx/wx.h".
  13 #include <wx/wxprec.h>
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 // for all others, include the necessary headers (this file is usually all you
  20 // need because it includes almost all "standard" wxWindows headers
  21 #ifndef WX_PRECOMP
  22     #include <wx/wx.h>
  23 #endif
  24
  25 #include <wx/image.h>
  26 #include <wx/wxhtml.h>
  27 #include <wx/filesys.h>
  28 #include <wx/fs_zip.h>
  29
  30 // ----------------------------------------------------------------------------
  31 // private classes
  32 // ----------------------------------------------------------------------------
  33
  34
  35 // Define a new application type, each program should derive a class from wxApp
  36    class MyApp : public wxApp
  37    {
  38    public:
  39     // override base class virtuals
  40     // ----------------------------
  41
  42     // this one is called on application startup and is a good place for the app
  43     // initialization (doing it here and not in the ctor allows to have an error
  44     // return: if OnInit() returns false, the application terminates)
  45       virtual bool OnInit();
  46    };
  47
  48
  49
  50 // Define a new frame type: this is going to be our main frame
  51    class MyFrame : public wxFrame
  52    {
  53    public:
  54     // ctor(s)
  55       MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  56
  57     // event handlers (these functions should _not_ be virtual)
  58       void OnQuit(wxCommandEvent& event);
  59       void OnHelp(wxCommandEvent& event);
  60       void OnClose(wxCloseEvent& event);
  61    private:
  62       wxHtmlHelpController help;
  63
  64     // any class wishing to process wxWindows events must use this macro
  65     DECLARE_EVENT_TABLE()
  66    };
  67
  68 // ----------------------------------------------------------------------------
  69 // constants
  70 // ----------------------------------------------------------------------------
  71
  72 // IDs for the controls and the menu commands
  73    enum
  74    {
  75     // menu items
  76    Minimal_Quit = 1,
  77    Minimal_Help
  78    };
  79
  80 // ----------------------------------------------------------------------------
  81 // event tables and other macros for wxWindows
  82 // ----------------------------------------------------------------------------
  83
  84 // the event tables connect the wxWindows events with the functions (event
  85 // handlers) which process them. It can be also done at run-time, but for the
  86 // simple menu events like this the static method is much simpler.
  87    BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  88    EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
  89    EVT_MENU(Minimal_Help, MyFrame::OnHelp)
  90    EVT_CLOSE(MyFrame::OnClose)
  91    END_EVENT_TABLE()
  92
  93    // Create a new application object: this macro will allow wxWindows to create
  94    // the application object during program execution (it's better than using a
  95    // static object for many reasons) and also declares the accessor function
  96    // wxGetApp() which will return the reference of the right type (i.e. MyApp and
  97    // not wxApp)
  98    IMPLEMENT_APP(MyApp)
  99
 100    // ============================================================================
 101    // implementation
 102    // ============================================================================
 103
 104    // ----------------------------------------------------------------------------
 105    // the application class
 106    // ----------------------------------------------------------------------------
 107    // `Main program' equivalent: the program execution "starts" here
 108    bool MyApp::OnInit()
 109    {
 110       wxInitAllImageHandlers();
 111 #if wxUSE_STREAMS && wxUSE_ZIPSTREAM && wxUSE_ZLIB
 112       wxFileSystem::AddHandler(new wxZipFSHandler);
 113 #endif
 114       SetVendorName("wxWindows");
 115       SetAppName("wxHTMLHelp");
 116
 117     // Create the main application window
 118       MyFrame *frame = new MyFrame("HTML Help Sample",
 119          wxPoint(50, 50), wxSize(150, 50));
 120
 121     // Show it and tell the application that it's our main window
 122     // @@@ what does it do exactly, in fact? is it necessary here?
 123       frame->Show(TRUE);
 124       SetTopWindow(frame);
 125
 126
 127     // success: wxApp::OnRun() will be called which will enter the main message
 128     // loop and the application will run. If we returned FALSE here, the
 129     // application would exit immediately.
 130       return TRUE;
 131    }
 132
 133 // ----------------------------------------------------------------------------
 134 // main frame
 135 // ----------------------------------------------------------------------------
 136
 137
 138 // frame constructor
 139    MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 140    : wxFrame((wxFrame *)NULL, -1, title, pos, size), help(wxHF_DEFAULTSTYLE | wxHF_OPENFILES)
 141    {
 142     // create a menu bar
 143       wxMenu *menuFile = new wxMenu;
 144
 145       menuFile->Append(Minimal_Help, "&Help");
 146       menuFile->Append(Minimal_Quit, "E&xit");
 147
 148     // now append the freshly created menu to the menu bar...
 149       wxMenuBar *menuBar = new wxMenuBar;
 150       menuBar->Append(menuFile, "&File");
 151
 152     // ... and attach this menu bar to the frame
 153       SetMenuBar(menuBar);
 154
 155       help.UseConfig(wxConfig::Get());
 156       bool ret;
 157       help.SetTempDir(".");
 158       ret = help.AddBook("helpfiles/testing.hhp");
 159       if (! ret)
 160           wxMessageBox("Failed adding book helpfiles/testing.hhp");
 161       ret = help.AddBook("helpfiles/another.hhp");
 162       if (! ret)
 163           wxMessageBox("Failed adding book helpfiles/another.hhp");
 164    }
 165
 166
 167 // event handlers
 168
 169    void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 170    {
 171     // TRUE is to force the frame to close
 172       Close(TRUE);
 173    }
 174
 175    void MyFrame::OnHelp(wxCommandEvent& WXUNUSED(event))
 176    {
 177        help.Display("Main page");
 178    }
 179
 180    void MyFrame::OnClose(wxCloseEvent& event)
 181    {
 182        // Close the help frame; this will cause the config data to
 183        // get written.
 184        if ( help.GetFrame() ) // returns NULL if no help frame active
 185            help.GetFrame()->Close(TRUE);
 186        // now we can safely delete the config pointer
 187        event.Skip();
 188        delete wxConfig::Set(NULL);
 189    }
 190
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