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