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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#ifdef __GNUG__
21// #pragma implementation "minimal.cpp"
22// #pragma interface "minimal.cpp"
23#endif
24
25// For compilers that support precompilation, includes "wx/wx.h".
26#include "wx/wxprec.h"
27
28#ifdef __BORLANDC__
29 #pragma hdrstop
30#endif
31
32// for all others, include the necessary headers (this file is usually all you
33// need because it includes almost all "standard" wxWindows headers)
34#ifndef WX_PRECOMP
35 #include "wx/wx.h"
36#endif
37
38// ----------------------------------------------------------------------------
39// resources
40// ----------------------------------------------------------------------------
41// the application icon
42#if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__)
43 #include "mondrian.xpm"
44#endif
45
46// ----------------------------------------------------------------------------
47// private classes
48// ----------------------------------------------------------------------------
49
50// Define a new application type, each program should derive a class from wxApp
51class MyApp : public wxApp
52{
53public:
54 // override base class virtuals
55 // ----------------------------
56
57 // this one is called on application startup and is a good place for the app
58 // initialization (doing it here and not in the ctor allows to have an error
59 // return: if OnInit() returns false, the application terminates)
60 virtual bool OnInit();
61};
62
63// Define a new frame type: this is going to be our main frame
64class MyFrame : public wxFrame
65{
66public:
67 // ctor(s)
68 MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
69
70 // event handlers (these functions should _not_ be virtual)
71 void OnQuit(wxCommandEvent& event);
72 void OnAbout(wxCommandEvent& event);
73
74private:
75 // any class wishing to process wxWindows events must use this macro
76 DECLARE_EVENT_TABLE()
77};
78
79// ----------------------------------------------------------------------------
80// constants
81// ----------------------------------------------------------------------------
82
83// IDs for the controls and the menu commands
84enum
85{
86 // menu items
87 Minimal_Quit = 1,
88 Minimal_About
89};
90
91// ----------------------------------------------------------------------------
92// event tables and other macros for wxWindows
93// ----------------------------------------------------------------------------
94
95// the event tables connect the wxWindows events with the functions (event
96// handlers) which process them. It can be also done at run-time, but for the
97// simple menu events like this the static method is much simpler.
98BEGIN_EVENT_TABLE(MyFrame, wxFrame)
99 EVT_MENU(Minimal_Quit, MyFrame::OnQuit)
100 EVT_MENU(Minimal_About, MyFrame::OnAbout)
101END_EVENT_TABLE()
102
103// Create a new application object: this macro will allow wxWindows to create
104// the application object during program execution (it's better than using a
105// static object for many reasons) and also declares the accessor function
106// wxGetApp() which will return the reference of the right type (i.e. MyApp and
107// not wxApp)
108IMPLEMENT_APP(MyApp)
109
110
111// ============================================================================
112// implementation
113// ============================================================================
114
115// ----------------------------------------------------------------------------
116// the application class
117// ----------------------------------------------------------------------------
118
119// 'Main program' equivalent: the program execution "starts" here
120bool MyApp::OnInit()
121{
122 // create the main application window
123 MyFrame *frame = new MyFrame("Minimal wxWindows App",
124 wxPoint(50, 50), wxSize(450, 340));
125
126 // and show it (the frames, unlike simple controls, are not shown when
127 // created initially)
128 frame->Show(TRUE);
129
130 // success: wxApp::OnRun() will be called which will enter the main message
131 // loop and the application will run. If we returned FALSE here, the
132 // application would exit immediately.
133 return TRUE;
134}
135
136// ----------------------------------------------------------------------------
137// main frame
138// ----------------------------------------------------------------------------
139
140// frame constructor
141MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
142 : wxFrame((wxFrame *)NULL, -1, title, pos, size)
143{
144#ifdef __WXMAC__
145 // we need this in order to allow the about menu relocation, since ABOUT is
146 // not the default id of the about menu
147 wxApp::s_macAboutMenuItemId = Minimal_About;
148#endif
149
150 // set the frame icon
151 SetIcon(wxICON(mondrian));
152
153#if wxUSE_MENUS
154 // create a menu bar
155 wxMenu *menuFile = new wxMenu("", wxMENU_TEAROFF);
156
157 // the "About" item should be in the help menu
158 wxMenu *helpMenu = new wxMenu;
159 helpMenu->Append(Minimal_About, "&About...\tCtrl-A", "Show about dialog");
160
161 menuFile->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program");
162
163 // now append the freshly created menu to the menu bar...
164 wxMenuBar *menuBar = new wxMenuBar();
165 menuBar->Append(menuFile, "&File");
166 menuBar->Append(helpMenu, "&Help");
167
168 // ... and attach this menu bar to the frame
169 SetMenuBar(menuBar);
170#endif // wxUSE_MENUS
171
172#if wxUSE_STATUSBAR
173 // create a status bar just for fun (by default with 1 pane only)
174 CreateStatusBar(2);
175 SetStatusText("Welcome to wxWindows!");
176#endif // wxUSE_STATUSBAR
177}
178
179
180// event handlers
181
182void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
183{
184 // TRUE is to force the frame to close
185 Close(TRUE);
186}
187
188void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
189{
190 wxString msg;
191 msg.Printf( _T("This is the about dialog of minimal sample.\n")
192 _T("Welcome to %s"), wxVERSION_STRING);
193
194 wxMessageBox(msg, "About Minimal", wxOK | wxICON_INFORMATION, this);
195}