wxWidgets/samples/config/conftest.cpp
2001-12-14 00:58:59 +00:00

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///////////////////////////////////////////////////////////////////////////////
// Name: conftest.cpp
// Purpose: demo of wxConfig and related classes
// Author: Vadim Zeitlin
// Modified by:
// Created: 03.08.98
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows license
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "wx/wxprec.h"
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif //precompiled headers
#include "wx/log.h"
#include "wx/config.h"
// ----------------------------------------------------------------------------
// classes
// ----------------------------------------------------------------------------
class MyApp: public wxApp
{
public:
// implement base class virtuals
virtual bool OnInit();
virtual int OnExit();
};
class MyFrame: public wxFrame
{
public:
MyFrame();
virtual ~MyFrame();
// callbacks
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
void OnDelete(wxCommandEvent& event);
private:
wxTextCtrl *m_text;
wxCheckBox *m_check;
DECLARE_EVENT_TABLE()
};
enum
{
ConfTest_Quit,
ConfTest_About,
ConfTest_Delete
};
// ----------------------------------------------------------------------------
// event tables
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(ConfTest_Quit, MyFrame::OnQuit)
EVT_MENU(ConfTest_About, MyFrame::OnAbout)
EVT_MENU(ConfTest_Delete, MyFrame::OnDelete)
END_EVENT_TABLE()
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// application
// ----------------------------------------------------------------------------
IMPLEMENT_APP(MyApp)
// `Main program' equivalent, creating windows and returning main app frame
bool MyApp::OnInit()
{
// we're using wxConfig's "create-on-demand" feature: it will create the
// config object when it's used for the first time. It has a number of
// advantages compared with explicitly creating our wxConfig:
// 1) we don't pay for it if we don't use it
// 2) there is no danger to create it twice
// application and vendor name are used by wxConfig to construct the name
// of the config file/registry key and must be set before the first call
// to Get() if you want to override the default values (the application
// name is the name of the executable and the vendor name is the same)
SetVendorName("wxWindows");
SetAppName("conftest"); // not needed, it's the default value
wxConfigBase *pConfig = wxConfigBase::Get();
// uncomment this to force writing back of the defaults for all values
// if they're not present in the config - this can give the user an idea
// of all possible settings for this program
pConfig->SetRecordDefaults();
// or you could also write something like this:
// wxFileConfig *pConfig = new wxFileConfig("conftest");
// wxConfigBase::Set(pConfig);
// where you can also specify the file names explicitly if you wish.
// Of course, calling Set() is optional and you only must do it if
// you want to later retrieve this pointer with Get().
// create the main program window
MyFrame *frame = new MyFrame;
frame->Show(TRUE);
SetTopWindow(frame);
// use our config object...
if ( pConfig->Read("/Controls/Check", 1l) != 0 ) {
wxMessageBox("You can disable this message box by unchecking\n"
"the checkbox in the main window (of course, a real\n"
"program would have a checkbox right here but we\n"
"keep it simple)", "Welcome to wxConfig demo",
wxICON_INFORMATION | wxOK);
}
return TRUE;
}
int MyApp::OnExit()
{
// clean up: Set() returns the active config object as Get() does, but unlike
// Get() it doesn't try to create one if there is none (definitely not what
// we want here!)
delete wxConfigBase::Set((wxConfigBase *) NULL);
return 0;
}
// ----------------------------------------------------------------------------
// frame
// ----------------------------------------------------------------------------
// main frame ctor
MyFrame::MyFrame()
: wxFrame((wxFrame *) NULL, -1, "wxConfig Demo")
{
// menu
wxMenu *file_menu = new wxMenu;
file_menu->Append(ConfTest_Delete, "&Delete", "Delete config file");
file_menu->AppendSeparator();
file_menu->Append(ConfTest_About, "&About\tF1", "About this sample");
file_menu->AppendSeparator();
file_menu->Append(ConfTest_Quit, "E&xit\tAlt-X", "Exit the program");
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, "&File");
SetMenuBar(menu_bar);
CreateStatusBar();
// child controls
wxPanel *panel = new wxPanel(this);
(void)new wxStaticText(panel, -1, "These controls remember their values!",
wxPoint(10, 10), wxSize(300, 20));
m_text = new wxTextCtrl(panel, -1, "", wxPoint(10, 40), wxSize(300, 20));
m_check = new wxCheckBox(panel, -1, "show welcome message box at startup",
wxPoint(10, 70), wxSize(300, 20));
// restore the control's values from the config
// NB: in this program, the config object is already created at this moment
// because we had called Get() from MyApp::OnInit(). However, if you later
// change the code and don't create it before this line, it won't break
// anything - unlike if you manually create wxConfig object with Create()
// or in any other way (then you must be sure to create it before using it!).
wxConfigBase *pConfig = wxConfigBase::Get();
// we could write Read("/Controls/Text") as well, it's just to show SetPath()
pConfig->SetPath("/Controls");
m_text->SetValue(pConfig->Read("Text", ""));
m_check->SetValue(pConfig->Read("Check", 1l) != 0);
// SetPath() understands ".."
pConfig->SetPath("../MainFrame");
// restore frame position and size
int x = pConfig->Read("x", 50),
y = pConfig->Read("y", 50),
w = pConfig->Read("w", 350),
h = pConfig->Read("h", 200);
Move(x, y);
SetClientSize(w, h);
pConfig->SetPath("/");
wxString s;
if ( pConfig->Read("TestValue", &s) )
{
wxLogStatus(this, wxT("TestValue from config is '%s'"), s.c_str());
}
else
{
wxLogStatus(this, wxT("TestValue not found in the config"));
}
}
void MyFrame::OnQuit(wxCommandEvent&)
{
Close(TRUE);
}
void MyFrame::OnAbout(wxCommandEvent&)
{
wxMessageBox(_T("wxConfig demo\n<EFBFBD> 1998-2001 Vadim Zeitlin"), _T("About"),
wxICON_INFORMATION | wxOK);
}
void MyFrame::OnDelete(wxCommandEvent&)
{
if ( wxConfigBase::Get()->DeleteAll() )
{
wxLogMessage(_T("Config file/registry key successfully deleted."));
delete wxConfigBase::Set((wxConfigBase *) NULL);
wxConfigBase::DontCreateOnDemand();
}
else
{
wxLogError(_T("Deleting config file/registry key failed."));
}
}
MyFrame::~MyFrame()
{
// save the control's values to the config
wxConfigBase *pConfig = wxConfigBase::Get();
if ( pConfig == NULL )
return;
pConfig->Write("/Controls/Text", m_text->GetValue());
pConfig->Write("/Controls/Check", m_check->GetValue());
// save the frame position
int x, y, w, h;
GetClientSize(&w, &h);
GetPosition(&x, &y);
pConfig->Write("/MainFrame/x", (long) x);
pConfig->Write("/MainFrame/y", (long) y);
pConfig->Write("/MainFrame/w", (long) w);
pConfig->Write("/MainFrame/h", (long) h);
pConfig->Write("/TestValue", "");
}