distrib/autopackage/sample/minimal.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        minimal.cpp
   3 // Purpose:     Minimal wxWindows sample
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // Copyright:   (c) Julian Smart
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // For compilers that support precompilation, includes "wx/wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 // for all others, include the necessary headers (this file is usually all you
  27 // need because it includes almost all "standard" wxWindows headers)
  28 #ifndef WX_PRECOMP
  29     #include "wx/wx.h"
  30 #endif
  31
  32 // ----------------------------------------------------------------------------
  33 // resources
  34 // ----------------------------------------------------------------------------
  35
  36
  37 // ----------------------------------------------------------------------------
  38 // private classes
  39 // ----------------------------------------------------------------------------
  40
  41 // Define a new application type, each program should derive a class from wxApp
  42 class MyApp : public wxApp
  43 {
  44 public:
  45     // override base class virtuals
  46     // ----------------------------
  47
  48     // this one is called on application startup and is a good place for the app
  49     // initialization (doing it here and not in the ctor allows to have an error
  50     // return: if OnInit() returns false, the application terminates)
  51     virtual bool OnInit();
  52 };
  53
  54 // Define a new frame type: this is going to be our main frame
  55 class MyFrame : public wxFrame
  56 {
  57 public:
  58     // ctor(s)
  59     MyFrame(const wxString& title);
  60
  61     // event handlers (these functions should _not_ be virtual)
  62     void OnQuit(wxCommandEvent& event);
  63     void OnAbout(wxCommandEvent& event);
  64
  65 private:
  66     // any class wishing to process wxWindows events must use this macro
  67     DECLARE_EVENT_TABLE()
  68 };
  69
  70 // ----------------------------------------------------------------------------
  71 // constants
  72 // ----------------------------------------------------------------------------
  73
  74 // IDs for the controls and the menu commands
  75 enum
  76 {
  77     // menu items
  78     Minimal_Quit = wxID_EXIT,
  79
  80     // it is important for the id corresponding to the "About" command to have
  81     // this standard value as otherwise it won't be handled properly under Mac
  82     // (where it is special and put into the "Apple" menu)
  83     Minimal_About = wxID_ABOUT
  84 };
  85
  86 // ----------------------------------------------------------------------------
  87 // event tables and other macros for wxWindows
  88 // ----------------------------------------------------------------------------
  89
  90 // the event tables connect the wxWindows events with the functions (event
  91 // handlers) which process them. It can be also done at run-time, but for the
  92 // simple menu events like this the static method is much simpler.
  93 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  94     EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
  95     EVT_MENU(Minimal_About, MyFrame::OnAbout)
  96 END_EVENT_TABLE()
  97
  98 // Create a new application object: this macro will allow wxWindows to create
  99 // the application object during program execution (it's better than using a
 100 // static object for many reasons) and also implements the accessor function
 101 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 102 // not wxApp)
 103 IMPLEMENT_APP(MyApp)
 104
 105 // ============================================================================
 106 // implementation
 107 // ============================================================================
 108
 109 // ----------------------------------------------------------------------------
 110 // the application class
 111 // ----------------------------------------------------------------------------
 112
 113 // 'Main program' equivalent: the program execution "starts" here
 114 bool MyApp::OnInit()
 115 {
 116     // create the main application window
 117     MyFrame *frame = new MyFrame(wxT("Minimal wxWindows App"));
 118
 119     // and show it (the frames, unlike simple controls, are not shown when
 120     // created initially)
 121     frame->Show(true);
 122
 123     // success: wxApp::OnRun() will be called which will enter the main message
 124     // loop and the application will run. If we returned false here, the
 125     // application would exit immediately.
 126     return true;
 127 }
 128
 129 // ----------------------------------------------------------------------------
 130 // main frame
 131 // ----------------------------------------------------------------------------
 132
 133 // frame constructor
 134 MyFrame::MyFrame(const wxString& title)
 135        : wxFrame(NULL, wxID_ANY, title)
 136 {
 137     // set the frame icon
 138
 139 #if wxUSE_MENUS
 140     // create a menu bar
 141     wxMenu *menuFile = new wxMenu;
 142
 143     // the "About" item should be in the help menu
 144     wxMenu *helpMenu = new wxMenu;
 145     helpMenu->Append(Minimal_About, wxT("&About\tF1"), wxT("Show about dialog"));
 146
 147     menuFile->Append(Minimal_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program"));
 148
 149     // now append the freshly created menu to the menu bar...
 150     wxMenuBar *menuBar = new wxMenuBar();
 151     menuBar->Append(menuFile, wxT("&File"));
 152     menuBar->Append(helpMenu, wxT("&Help"));
 153
 154     // ... and attach this menu bar to the frame
 155     SetMenuBar(menuBar);
 156 #endif // wxUSE_MENUS
 157
 158 #if wxUSE_STATUSBAR
 159     // create a status bar just for fun (by default with 1 pane only)
 160     CreateStatusBar(2);
 161     SetStatusText(wxT("Welcome to wxWindows!"));
 162 #endif // wxUSE_STATUSBAR
 163 }
 164
 165
 166 // event handlers
 167
 168 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 169 {
 170     // true is to force the frame to close
 171     Close(true);
 172 }
 173
 174 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 175 {
 176     wxString msg;
 177     msg.Printf( wxT("This is the About dialog of the minimal sample.\n")
 178                 wxT("Welcome to %s"), wxVERSION_STRING);
 179
 180     wxMessageBox(msg, wxT("About Minimal"), wxOK | wxICON_INFORMATION, this);
 181 }