samples/html/about/about.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        test.cpp
   3 // Purpose:     wxHtml testing example
   4 /////////////////////////////////////////////////////////////////////////////
   5
   6 #ifdef __GNUG__
   7     #pragma implementation "test.cpp"
   8     #pragma interface "test.cpp"
   9 #endif
  10
  11 // For compilers that support precompilation, includes "wx/wx.h".
  12 #include <wx/wxprec.h>
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 // for all others, include the necessary headers (this file is usually all you
  19 // need because it includes almost all "standard" wxWindows headers
  20 #ifndef WX_PRECOMP
  21     #include <wx/wx.h>
  22 #endif
  23
  24 #include <wx/image.h>
  25 #include <wx/imagpng.h>
  26 #include <wx/wxhtml.h>
  27
  28 // ----------------------------------------------------------------------------
  29 // private classes
  30 // ----------------------------------------------------------------------------
  31
  32
  33 // Define a new application type, each program should derive a class from wxApp
  34    class MyApp : public wxApp
  35    {
  36    public:
  37     // override base class virtuals
  38     // ----------------------------
  39
  40     // this one is called on application startup and is a good place for the app
  41     // initialization (doing it here and not in the ctor allows to have an error
  42     // return: if OnInit() returns false, the application terminates)
  43       virtual bool OnInit();
  44    };
  45
  46 // Define a new frame type: this is going to be our main frame
  47    class MyFrame : public wxFrame
  48    {
  49    public:
  50     // ctor(s)
  51       MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  52
  53     // event handlers (these functions should _not_ be virtual)
  54       void OnQuit(wxCommandEvent& event);
  55       void OnAbout(wxCommandEvent& event);
  56
  57    private:
  58     // any class wishing to process wxWindows events must use this macro
  59     DECLARE_EVENT_TABLE()
  60    };
  61
  62 // ----------------------------------------------------------------------------
  63 // constants
  64 // ----------------------------------------------------------------------------
  65
  66 // IDs for the controls and the menu commands
  67    enum
  68    {
  69     // menu items
  70    Minimal_Quit = 1,
  71    Minimal_About,
  72    Minimal_Back,
  73    Minimal_Forward,
  74
  75     // controls start here (the numbers are, of course, arbitrary)
  76    Minimal_Text = 1000,
  77    };
  78
  79 // ----------------------------------------------------------------------------
  80 // event tables and other macros for wxWindows
  81 // ----------------------------------------------------------------------------
  82
  83 // the event tables connect the wxWindows events with the functions (event
  84 // handlers) which process them. It can be also done at run-time, but for the
  85 // simple menu events like this the static method is much simpler.
  86    BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  87    EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
  88    EVT_MENU(Minimal_About, MyFrame::OnAbout)
  89    END_EVENT_TABLE()
  90
  91    // Create a new application object: this macro will allow wxWindows to create
  92    // the application object during program execution (it's better than using a
  93    // static object for many reasons) and also declares the accessor function
  94    // wxGetApp() which will return the reference of the right type (i.e. MyApp and
  95    // not wxApp)
  96    IMPLEMENT_APP(MyApp)
  97
  98    // ============================================================================
  99    // implementation
 100    // ============================================================================
 101
 102    // ----------------------------------------------------------------------------
 103    // the application class
 104    // ----------------------------------------------------------------------------
 105    // `Main program' equivalent: the program execution "starts" here
 106    bool MyApp::OnInit()
 107    {
 108     wxImage::AddHandler(new wxPNGHandler);
 109     // Create the main application window
 110       MyFrame *frame = new MyFrame("wxHtmlWindow testing application",
 111          wxPoint(50, 50), wxSize(150, 50));
 112
 113     // Show it and tell the application that it's our main window
 114     // @@@ what does it do exactly, in fact? is it necessary here?
 115       frame->Show(TRUE);
 116       SetTopWindow(frame);
 117
 118
 119     // success: wxApp::OnRun() will be called which will enter the main message
 120     // loop and the application will run. If we returned FALSE here, the
 121     // application would exit immediately.
 122       return TRUE;
 123    }
 124
 125 // ----------------------------------------------------------------------------
 126 // main frame
 127 // ----------------------------------------------------------------------------
 128
 129
 130 // frame constructor
 131    MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 132    : wxFrame((wxFrame *)NULL, -1, title, pos, size)
 133    {
 134     // create a menu bar
 135       wxMenu *menuFile = new wxMenu;
 136
 137       menuFile->Append(Minimal_About, "&About");
 138       menuFile->Append(Minimal_Quit, "E&xit");
 139
 140     // now append the freshly created menu to the menu bar...
 141       wxMenuBar *menuBar = new wxMenuBar;
 142       menuBar->Append(menuFile, "&File");
 143
 144     // ... and attach this menu bar to the frame
 145       SetMenuBar(menuBar);
 146    }
 147
 148
 149 // event handlers
 150
 151    void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 152    {
 153     // TRUE is to force the frame to close
 154       Close(TRUE);
 155    }
 156
 157    void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 158    {
 159         wxHtmlWindow *html;
 160 #ifdef __WXMSW__
 161         wxDialog dlg(this, -1, "About", wxDefaultPosition, wxSize(400, 250), wxDIALOG_MODAL | wxDEFAULT_DIALOG_STYLE);
 162 #else
 163         wxDialog dlg(this, -1, "About", wxDefaultPosition, wxSize(400, 230), wxDIALOG_MODAL | wxDEFAULT_DIALOG_STYLE);
 164 #endif
 165
 166         html = new wxHtmlWindow(&dlg, -1, wxPoint(10, 10), wxSize(380, 160), wxHW_SCROLLBAR_NEVER);
 167         html -> SetBorders(0);
 168         html -> LoadPage("data/about.htm");
 169         wxButton *bu1 = new wxButton(&dlg, wxID_OK, "OK", wxPoint(250, 185), wxSize(100, 30));
 170         bu1 -> SetDefault();
 171         dlg.ShowModal();
 172     }
 173