]> git.saurik.com Git - wxWidgets.git/blob - samples/minimal/minimal.cpp
This is how wxPlotWindow would look like with the
[wxWidgets.git] / samples / minimal / 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 #ifdef __GNUG__
20 #pragma implementation "minimal.cpp"
21 #pragma interface "minimal.cpp"
22 #endif
23
24 // For compilers that support precompilation, includes "wx/wx.h".
25 #include "wx/wxprec.h"
26
27 #ifdef __BORLANDC__
28 #pragma hdrstop
29 #endif
30
31 // for all others, include the necessary headers (this file is usually all you
32 // need because it includes almost all "standard" wxWindows headers)
33 #ifndef WX_PRECOMP
34 #include "wx/wx.h"
35 #endif
36
37 // ----------------------------------------------------------------------------
38 // resources
39 // ----------------------------------------------------------------------------
40 // the application icon
41 #if defined(__WXGTK__) || defined(__WXMOTIF__)
42 #include "mondrian.xpm"
43 #endif
44
45 // ----------------------------------------------------------------------------
46 // private classes
47 // ----------------------------------------------------------------------------
48
49 // Define a new application type, each program should derive a class from wxApp
50 class MyApp : public wxApp
51 {
52 public:
53 // override base class virtuals
54 // ----------------------------
55
56 // this one is called on application startup and is a good place for the app
57 // initialization (doing it here and not in the ctor allows to have an error
58 // return: if OnInit() returns false, the application terminates)
59 virtual bool OnInit();
60 };
61
62 // Define a new frame type: this is going to be our main frame
63 class MyFrame : public wxFrame
64 {
65 public:
66 // ctor(s)
67 MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
68
69 // event handlers (these functions should _not_ be virtual)
70 void OnPaint(wxPaintEvent& event)
71 {
72 wxPaintDC dc(this);
73 dc.DrawRectangle(20, 20, 100, 100);
74 dc.SetPen(*wxRED_PEN);
75 dc.SetDeviceOrigin(20, 20);
76 dc.SetClippingRegion(0, 0, 100, 100);
77 dc.DrawLine(0, 0, 1000, 1000);
78 }
79
80 void OnQuit(wxCommandEvent& event);
81 void OnAbout(wxCommandEvent& event);
82
83 private:
84 // any class wishing to process wxWindows events must use this macro
85 DECLARE_EVENT_TABLE()
86 };
87
88 // ----------------------------------------------------------------------------
89 // constants
90 // ----------------------------------------------------------------------------
91
92 // IDs for the controls and the menu commands
93 enum
94 {
95 // menu items
96 Minimal_Quit = 1,
97 Minimal_About
98 };
99
100 // ----------------------------------------------------------------------------
101 // event tables and other macros for wxWindows
102 // ----------------------------------------------------------------------------
103
104 // the event tables connect the wxWindows events with the functions (event
105 // handlers) which process them. It can be also done at run-time, but for the
106 // simple menu events like this the static method is much simpler.
107 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
108 EVT_PAINT(MyFrame::OnPaint)
109 EVT_MENU(Minimal_Quit, MyFrame::OnQuit)
110 EVT_MENU(Minimal_About, MyFrame::OnAbout)
111 END_EVENT_TABLE()
112
113 // Create a new application object: this macro will allow wxWindows to create
114 // the application object during program execution (it's better than using a
115 // static object for many reasons) and also declares the accessor function
116 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
117 // not wxApp)
118 IMPLEMENT_APP(MyApp)
119
120 // ============================================================================
121 // implementation
122 // ============================================================================
123
124 // ----------------------------------------------------------------------------
125 // the application class
126 // ----------------------------------------------------------------------------
127
128 // 'Main program' equivalent: the program execution "starts" here
129 bool MyApp::OnInit()
130 {
131 // create the main application window
132 MyFrame *frame = new MyFrame("Minimal wxWindows App",
133 wxPoint(50, 50), wxSize(450, 340));
134
135 // and show it (the frames, unlike simple controls, are not shown when
136 // created initially)
137 frame->Show(TRUE);
138
139 // success: wxApp::OnRun() will be called which will enter the main message
140 // loop and the application will run. If we returned FALSE here, the
141 // application would exit immediately.
142 return TRUE;
143 }
144
145 // ----------------------------------------------------------------------------
146 // main frame
147 // ----------------------------------------------------------------------------
148
149 // frame constructor
150 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
151 : wxFrame((wxFrame *)NULL, -1, title, pos, size)
152 {
153 #ifdef __WXMAC__
154 // we need this in order to allow the about menu relocation, since ABOUT is
155 // not the default id of the about menu
156 wxApp::s_macAboutMenuItemId = Minimal_About;
157 #endif
158
159 // set the frame icon
160 SetIcon(wxICON(mondrian));
161
162 // create a menu bar
163 wxMenu *menuFile = new wxMenu("", wxMENU_TEAROFF);
164
165 // the "About" item should be in the help menu
166 wxMenu *helpMenu = new wxMenu;
167 helpMenu->Append(Minimal_About, "&About...\tCtrl-A", "Show about dialog");
168
169 menuFile->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program");
170
171 // now append the freshly created menu to the menu bar...
172 wxMenuBar *menuBar = new wxMenuBar();
173 menuBar->Append(menuFile, "&File");
174 menuBar->Append(helpMenu, "&Help");
175
176 // ... and attach this menu bar to the frame
177 SetMenuBar(menuBar);
178
179 #if wxUSE_STATUSBAR
180 // create a status bar just for fun (by default with 1 pane only)
181 CreateStatusBar(2);
182 SetStatusText("Welcome to wxWindows!");
183 #endif // wxUSE_STATUSBAR
184 }
185
186
187 // event handlers
188
189 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
190 {
191 // TRUE is to force the frame to close
192 Close(TRUE);
193 }
194
195 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
196 {
197 wxString msg;
198 msg.Printf( _T("This is the about dialog of minimal sample.\n")
199 _T("Welcome to %s"), wxVERSION_STRING);
200
201 wxMessageBox(msg, "About Minimal", wxOK | wxICON_INFORMATION, this);
202 }