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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: minimal.cpp
3 // Purpose: Minimal wxWidgets 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" wxWidgets headers)
29 #ifndef WX_PRECOMP
30 #include "wx/wx.h"
31 #endif
32
33 // ----------------------------------------------------------------------------
34 // resources
35 // ----------------------------------------------------------------------------
36
37 // the application icon (under Windows and OS/2 it is in resources and even
38 // though we could still include the XPM here it would be unused)
39 #if !defined(__WXMSW__) && !defined(__WXPM__)
40 #include "../sample.xpm"
41 #endif
42
43 // ----------------------------------------------------------------------------
44 // private classes
45 // ----------------------------------------------------------------------------
46
47 // Define a new application type, each program should derive a class from wxApp
48 class MyApp : public wxApp
49 {
50 public:
51 // override base class virtuals
52 // ----------------------------
53
54 // this one is called on application startup and is a good place for the app
55 // initialization (doing it here and not in the ctor allows to have an error
56 // return: if OnInit() returns false, the application terminates)
57 virtual bool OnInit();
58 };
59
60 // Define a new frame type: this is going to be our main frame
61 class MyFrame : public wxFrame
62 {
63 public:
64 // ctor(s)
65 MyFrame(const wxString& title);
66
67 // event handlers (these functions should _not_ be virtual)
68 void OnQuit(wxCommandEvent& event);
69 void OnAbout(wxCommandEvent& event);
70
71 private:
72 // any class wishing to process wxWidgets events must use this macro
73 DECLARE_EVENT_TABLE()
74 };
75
76 // ----------------------------------------------------------------------------
77 // constants
78 // ----------------------------------------------------------------------------
79
80 // IDs for the controls and the menu commands
81 enum
82 {
83 // menu items
84 Minimal_Quit = wxID_EXIT,
85
86 // it is important for the id corresponding to the "About" command to have
87 // this standard value as otherwise it won't be handled properly under Mac
88 // (where it is special and put into the "Apple" menu)
89 Minimal_About = wxID_ABOUT
90 };
91
92 // ----------------------------------------------------------------------------
93 // event tables and other macros for wxWidgets
94 // ----------------------------------------------------------------------------
95
96 // the event tables connect the wxWidgets events with the functions (event
97 // handlers) which process them. It can be also done at run-time, but for the
98 // simple menu events like this the static method is much simpler.
99 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
100 EVT_MENU(Minimal_Quit, MyFrame::OnQuit)
101 EVT_MENU(Minimal_About, MyFrame::OnAbout)
102 END_EVENT_TABLE()
103
104 // Create a new application object: this macro will allow wxWidgets to create
105 // the application object during program execution (it's better than using a
106 // static object for many reasons) and also implements the accessor function
107 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
108 // not wxApp)
109 IMPLEMENT_APP(MyApp)
110
111 // ============================================================================
112 // implementation
113 // ============================================================================
114
115 // ----------------------------------------------------------------------------
116 // the application class
117 // ----------------------------------------------------------------------------
118
119 // 'Main program' equivalent: the program execution "starts" here
120 bool MyApp::OnInit()
121 {
122 // create the main application window
123 MyFrame *frame = new MyFrame(_T("Minimal wxWidgets App"));
124
125 // and show it (the frames, unlike simple controls, are not shown when
126 // created initially)
127 frame->Show(true);
128
129 // success: wxApp::OnRun() will be called which will enter the main message
130 // loop and the application will run. If we returned false here, the
131 // application would exit immediately.
132 return true;
133 }
134
135 // ----------------------------------------------------------------------------
136 // main frame
137 // ----------------------------------------------------------------------------
138
139 // frame constructor
140 MyFrame::MyFrame(const wxString& title)
141 : wxFrame(NULL, wxID_ANY, title)
142 {
143 // set the frame icon
144 SetIcon(wxICON(sample));
145
146 #if wxUSE_MENUS
147 // create a menu bar
148 wxMenu *menuFile = new wxMenu;
149
150 // the "About" item should be in the help menu
151 wxMenu *helpMenu = new wxMenu;
152 helpMenu->Append(Minimal_About, _T("&About...\tF1"), _T("Show about dialog"));
153
154 menuFile->Append(Minimal_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
155
156 // now append the freshly created menu to the menu bar...
157 wxMenuBar *menuBar = new wxMenuBar();
158 menuBar->Append(menuFile, _T("&File"));
159 menuBar->Append(helpMenu, _T("&Help"));
160
161 // ... and attach this menu bar to the frame
162 SetMenuBar(menuBar);
163 #endif // wxUSE_MENUS
164
165 #if wxUSE_STATUSBAR
166 // create a status bar just for fun (by default with 1 pane only)
167 CreateStatusBar(2);
168 SetStatusText(_T("Welcome to wxWidgets!"));
169 #endif // wxUSE_STATUSBAR
170 }
171
172
173 // event handlers
174
175 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
176 {
177 // true is to force the frame to close
178 Close(true);
179 }
180
181 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
182 {
183 wxString msg;
184 msg.Printf( _T("This is the About dialog of the minimal sample.\n")
185 _T("Welcome to %s"), wxVERSION_STRING);
186
187 wxMessageBox(msg, _T("About Minimal"), wxOK | wxICON_INFORMATION, this);
188 }