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 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx/wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 // for all others, include the necessary headers (this file is usually all you
  28 // need because it includes almost all "standard" wxWindows headers)
  29 #ifndef WX_PRECOMP
  30     #include "wx/wx.h"
  31 #endif
  32
  33 // ----------------------------------------------------------------------------
  34 // resources
  35 // ----------------------------------------------------------------------------
  36
  37
  38 // ----------------------------------------------------------------------------
  39 // private classes
  40 // ----------------------------------------------------------------------------
  41
  42 // Define a new application type, each program should derive a class from wxApp
  43 class MyApp : public wxApp
  44 {
  45 public:
  46     // override base class virtuals
  47     // ----------------------------
  48
  49     // this one is called on application startup and is a good place for the app
  50     // initialization (doing it here and not in the ctor allows to have an error
  51     // return: if OnInit() returns false, the application terminates)
  52     virtual bool OnInit();
  53 };
  54
  55 // Define a new frame type: this is going to be our main frame
  56 class MyFrame : public wxFrame
  57 {
  58 public:
  59     // ctor(s)
  60     MyFrame(const wxString& title);
  61
  62     // event handlers (these functions should _not_ be virtual)
  63     void OnQuit(wxCommandEvent& event);
  64     void OnAbout(wxCommandEvent& event);
  65
  66 private:
  67     // any class wishing to process wxWindows events must use this macro
  68     DECLARE_EVENT_TABLE()
  69 };
  70
  71 // ----------------------------------------------------------------------------
  72 // constants
  73 // ----------------------------------------------------------------------------
  74
  75 // IDs for the controls and the menu commands
  76 enum
  77 {
  78     // menu items
  79     Minimal_Quit = wxID_EXIT,
  80
  81     // it is important for the id corresponding to the "About" command to have
  82     // this standard value as otherwise it won't be handled properly under Mac
  83     // (where it is special and put into the "Apple" menu)
  84     Minimal_About = wxID_ABOUT
  85 };
  86
  87 // ----------------------------------------------------------------------------
  88 // event tables and other macros for wxWindows
  89 // ----------------------------------------------------------------------------
  90
  91 // the event tables connect the wxWindows events with the functions (event
  92 // handlers) which process them. It can be also done at run-time, but for the
  93 // simple menu events like this the static method is much simpler.
  94 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  95     EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
  96     EVT_MENU(Minimal_About, MyFrame::OnAbout)
  97 END_EVENT_TABLE()
  98
  99 // Create a new application object: this macro will allow wxWindows to create
 100 // the application object during program execution (it's better than using a
 101 // static object for many reasons) and also implements the accessor function
 102 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 103 // not wxApp)
 104 IMPLEMENT_APP(MyApp)
 105
 106 // ============================================================================
 107 // implementation
 108 // ============================================================================
 109
 110 // ----------------------------------------------------------------------------
 111 // the application class
 112 // ----------------------------------------------------------------------------
 113
 114 // 'Main program' equivalent: the program execution "starts" here
 115 bool MyApp::OnInit()
 116 {
 117     // create the main application window
 118     MyFrame *frame = new MyFrame(_T("Minimal wxWindows App"));
 119
 120     // and show it (the frames, unlike simple controls, are not shown when
 121     // created initially)
 122     frame->Show(true);
 123
 124     // success: wxApp::OnRun() will be called which will enter the main message
 125     // loop and the application will run. If we returned false here, the
 126     // application would exit immediately.
 127     return true;
 128 }
 129
 130 // ----------------------------------------------------------------------------
 131 // main frame
 132 // ----------------------------------------------------------------------------
 133
 134 // frame constructor
 135 MyFrame::MyFrame(const wxString& title)
 136        : wxFrame(NULL, wxID_ANY, title)
 137 {
 138     // set the frame icon
 139
 140 #if wxUSE_MENUS
 141     // create a menu bar
 142     wxMenu *menuFile = new wxMenu;
 143
 144     // the "About" item should be in the help menu
 145     wxMenu *helpMenu = new wxMenu;
 146     helpMenu->Append(Minimal_About, _T("&About...\tF1"), _T("Show about dialog"));
 147
 148     menuFile->Append(Minimal_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
 149
 150     // now append the freshly created menu to the menu bar...
 151     wxMenuBar *menuBar = new wxMenuBar();
 152     menuBar->Append(menuFile, _T("&File"));
 153     menuBar->Append(helpMenu, _T("&Help"));
 154
 155     // ... and attach this menu bar to the frame
 156     SetMenuBar(menuBar);
 157 #endif // wxUSE_MENUS
 158
 159 #if wxUSE_STATUSBAR
 160     // create a status bar just for fun (by default with 1 pane only)
 161     CreateStatusBar(2);
 162     SetStatusText(_T("Welcome to wxWindows!"));
 163 #endif // wxUSE_STATUSBAR
 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::OnAbout(wxCommandEvent& WXUNUSED(event))
 176 {
 177     wxString msg;
 178     msg.Printf( _T("This is the About dialog of the minimal sample.\n")
 179                 _T("Welcome to %s"), wxVERSION_STRING);
 180
 181     wxMessageBox(msg, _T("About Minimal"), wxOK | wxICON_INFORMATION, this);
 182 }