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[wxWidgets.git] / samples / config / conftest.cpp
1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: conftest.cpp
3 // Purpose: demo of wxConfig and related classes
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 03.08.98
7 // RCS-ID: $Id$
8 // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
9 // Licence: wxWindows licence
10 ///////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19 #include "wx/wxprec.h"
20
21 #ifdef __BORLANDC__
22 #pragma hdrstop
23 #endif
24
25 #ifndef WX_PRECOMP
26 #include "wx/wx.h"
27 #endif //precompiled headers
28
29 #include "wx/log.h"
30 #include "wx/config.h"
31
32 #ifndef wxHAS_IMAGES_IN_RESOURCES
33 #include "../sample.xpm"
34 #endif
35
36 // ----------------------------------------------------------------------------
37 // classes
38 // ----------------------------------------------------------------------------
39
40 class MyApp: public wxApp
41 {
42 public:
43 // implement base class virtuals
44 virtual bool OnInit();
45 virtual int OnExit();
46 };
47
48 class MyFrame: public wxFrame
49 {
50 public:
51 MyFrame();
52 virtual ~MyFrame();
53
54 // callbacks
55 void OnQuit(wxCommandEvent& event);
56 void OnAbout(wxCommandEvent& event);
57 void OnDelete(wxCommandEvent& event);
58
59 private:
60 wxTextCtrl *m_text;
61 wxCheckBox *m_check;
62
63 DECLARE_EVENT_TABLE()
64 };
65
66 // ----------------------------------------------------------------------------
67 // event tables
68 // ----------------------------------------------------------------------------
69
70 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
71 EVT_MENU(wxID_EXIT, MyFrame::OnQuit)
72 EVT_MENU(wxID_ABOUT, MyFrame::OnAbout)
73 EVT_MENU(wxID_DELETE, MyFrame::OnDelete)
74 END_EVENT_TABLE()
75
76 // ============================================================================
77 // implementation
78 // ============================================================================
79
80 // ----------------------------------------------------------------------------
81 // application
82 // ----------------------------------------------------------------------------
83
84 IMPLEMENT_APP(MyApp)
85
86 // `Main program' equivalent, creating windows and returning main app frame
87 bool MyApp::OnInit()
88 {
89 if ( !wxApp::OnInit() )
90 return false;
91
92 // we're using wxConfig's "create-on-demand" feature: it will create the
93 // config object when it's used for the first time. It has a number of
94 // advantages compared with explicitly creating our wxConfig:
95 // 1) we don't pay for it if we don't use it
96 // 2) there is no danger to create it twice
97
98 // application and vendor name are used by wxConfig to construct the name
99 // of the config file/registry key and must be set before the first call
100 // to Get() if you want to override the default values (the application
101 // name is the name of the executable and the vendor name is the same)
102 SetVendorName(wxT("wxWidgets"));
103 SetAppName(wxT("conftest")); // not needed, it's the default value
104
105 wxConfigBase *pConfig = wxConfigBase::Get();
106
107 // uncomment this to force writing back of the defaults for all values
108 // if they're not present in the config - this can give the user an idea
109 // of all possible settings for this program
110 pConfig->SetRecordDefaults();
111
112 // or you could also write something like this:
113 // wxFileConfig *pConfig = new wxFileConfig("conftest");
114 // wxConfigBase::Set(pConfig);
115 // where you can also specify the file names explicitly if you wish.
116 // Of course, calling Set() is optional and you only must do it if
117 // you want to later retrieve this pointer with Get().
118
119 // create the main program window
120 MyFrame *frame = new MyFrame;
121 frame->Show(true);
122
123 // use our config object...
124 if ( pConfig->Read(wxT("/Controls/Check"), 1l) != 0 ) {
125 wxMessageBox(wxT("You can disable this message box by unchecking\n")
126 wxT("the checkbox in the main window (of course, a real\n")
127 wxT("program would have a checkbox right here but we\n")
128 wxT("keep it simple)"), wxT("Welcome to wxConfig demo"),
129 wxICON_INFORMATION | wxOK);
130 }
131
132 return true;
133 }
134
135 int MyApp::OnExit()
136 {
137 // clean up: Set() returns the active config object as Get() does, but unlike
138 // Get() it doesn't try to create one if there is none (definitely not what
139 // we want here!)
140 delete wxConfigBase::Set((wxConfigBase *) NULL);
141
142 return 0;
143 }
144
145 // ----------------------------------------------------------------------------
146 // frame
147 // ----------------------------------------------------------------------------
148
149 // main frame ctor
150 MyFrame::MyFrame()
151 : wxFrame((wxFrame *) NULL, wxID_ANY, wxT("wxConfig Demo"))
152 {
153 SetIcon(wxICON(sample));
154
155 // menu
156 wxMenu *file_menu = new wxMenu;
157
158 file_menu->Append(wxID_DELETE, wxT("&Delete"), wxT("Delete config file"));
159 file_menu->AppendSeparator();
160 file_menu->Append(wxID_ABOUT, wxT("&About\tF1"), wxT("About this sample"));
161 file_menu->AppendSeparator();
162 file_menu->Append(wxID_EXIT, wxT("E&xit\tAlt-X"), wxT("Exit the program"));
163 wxMenuBar *menu_bar = new wxMenuBar;
164 menu_bar->Append(file_menu, wxT("&File"));
165 SetMenuBar(menu_bar);
166
167 #if wxUSE_STATUSBAR
168 CreateStatusBar();
169 #endif // wxUSE_STATUSBAR
170
171 // child controls
172 wxPanel *panel = new wxPanel(this);
173 (void)new wxStaticText(panel, wxID_ANY, wxT("These controls remember their values!"),
174 wxPoint(10, 10), wxSize(300, 20));
175 m_text = new wxTextCtrl(panel, wxID_ANY, wxT(""), wxPoint(10, 40), wxSize(300, 20));
176 m_check = new wxCheckBox(panel, wxID_ANY, wxT("show welcome message box at startup"),
177 wxPoint(10, 70), wxSize(300, 20));
178
179 // restore the control's values from the config
180
181 // NB: in this program, the config object is already created at this moment
182 // because we had called Get() from MyApp::OnInit(). However, if you later
183 // change the code and don't create it before this line, it won't break
184 // anything - unlike if you manually create wxConfig object with Create()
185 // or in any other way (then you must be sure to create it before using it!).
186 wxConfigBase *pConfig = wxConfigBase::Get();
187
188 // we could write Read("/Controls/Text") as well, it's just to show SetPath()
189 pConfig->SetPath(wxT("/Controls"));
190
191 m_text->SetValue(pConfig->Read(wxT("Text"), wxT("")));
192 m_check->SetValue(pConfig->Read(wxT("Check"), 1l) != 0);
193
194 // SetPath() understands ".."
195 pConfig->SetPath(wxT("../MainFrame"));
196
197 // restore frame position and size
198 int x = pConfig->Read(wxT("x"), 50),
199 y = pConfig->Read(wxT("y"), 50),
200 w = pConfig->Read(wxT("w"), 350),
201 h = pConfig->Read(wxT("h"), 200);
202 Move(x, y);
203 SetClientSize(w, h);
204
205 pConfig->SetPath(wxT("/"));
206 wxString s;
207 if ( pConfig->Read(wxT("TestValue"), &s) )
208 {
209 wxLogStatus(this, wxT("TestValue from config is '%s'"), s.c_str());
210 }
211 else
212 {
213 wxLogStatus(this, wxT("TestValue not found in the config"));
214 }
215 }
216
217 void MyFrame::OnQuit(wxCommandEvent&)
218 {
219 Close(true);
220 }
221
222 void MyFrame::OnAbout(wxCommandEvent&)
223 {
224 wxMessageBox(wxT("wxConfig demo\n(c) 1998-2001 Vadim Zeitlin"), wxT("About"),
225 wxICON_INFORMATION | wxOK);
226 }
227
228 void MyFrame::OnDelete(wxCommandEvent&)
229 {
230 wxConfigBase *pConfig = wxConfigBase::Get();
231 if ( pConfig == NULL )
232 {
233 wxLogError(wxT("No config to delete!"));
234 return;
235 }
236
237 if ( pConfig->DeleteAll() )
238 {
239 wxLogMessage(wxT("Config file/registry key successfully deleted."));
240
241 delete wxConfigBase::Set(NULL);
242 wxConfigBase::DontCreateOnDemand();
243 }
244 else
245 {
246 wxLogError(wxT("Deleting config file/registry key failed."));
247 }
248 }
249
250 MyFrame::~MyFrame()
251 {
252 wxConfigBase *pConfig = wxConfigBase::Get();
253 if ( pConfig == NULL )
254 return;
255
256 // save the control's values to the config
257 pConfig->Write(wxT("/Controls/Text"), m_text->GetValue());
258 pConfig->Write(wxT("/Controls/Check"), m_check->GetValue());
259
260 // save the frame position
261 int x, y, w, h;
262 GetClientSize(&w, &h);
263 GetPosition(&x, &y);
264 pConfig->Write(wxT("/MainFrame/x"), (long) x);
265 pConfig->Write(wxT("/MainFrame/y"), (long) y);
266 pConfig->Write(wxT("/MainFrame/w"), (long) w);
267 pConfig->Write(wxT("/MainFrame/h"), (long) h);
268
269 pConfig->Write(wxT("/TestValue"), wxT("A test value"));
270 }
271