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