wxConfig sample + wxGTK makefiles

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@422 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/config/conftest.cpp

@@ -0,0 +1,232 @@
+///////////////////////////////////////////////////////////////////////////////
+// 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);
+  bool OnClose() { return TRUE; }
+
+private:
+  wxTextCtrl *m_text;
+  wxCheckBox *m_check;
+
+  DECLARE_EVENT_TABLE()
+};
+
+enum
+{
+  Minimal_Quit,
+  Minimal_About,
+  Minimal_Delete
+};
+
+// ----------------------------------------------------------------------------
+// event tables
+// ----------------------------------------------------------------------------
+BEGIN_EVENT_TABLE(MyFrame, wxFrame)
+  EVT_MENU(Minimal_Quit, MyFrame::OnQuit)
+  EVT_MENU(Minimal_About, MyFrame::OnAbout)
+  EVT_MENU(Minimal_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();
+
+  // 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(NULL);
+
+  return 0;
+}
+
+// ----------------------------------------------------------------------------
+// frame
+// ----------------------------------------------------------------------------
+
+// main frame ctor
+MyFrame::MyFrame()
+       : wxFrame(NULL, -1, "wxConfig Demo")
+{
+  // menu
+  wxMenu *file_menu = new wxMenu;
+
+  file_menu->Append(Minimal_Delete, "&Delete", "Delete config file");
+  file_menu->AppendSeparator();
+  file_menu->Append(Minimal_About, "&About", "About this sample");
+  file_menu->AppendSeparator();
+  file_menu->Append(Minimal_Quit, "E&xit", "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);
+}
+
+void MyFrame::OnQuit(wxCommandEvent&)
+{
+  Close(TRUE);
+}
+
+void MyFrame::OnAbout(wxCommandEvent&)
+{
+  wxMessageBox("wxConfig demo\n<EFBFBD> Vadim Zeitlin 1998", "About",
+               wxICON_INFORMATION | wxOK);
+}
+
+void MyFrame::OnDelete(wxCommandEvent&)
+{
+  if ( wxConfigBase::Get()->DeleteAll() ) {
+    wxLogMessage("Config file/registry key successfully deleted.");
+
+    delete wxConfigBase::Set(NULL);
+    wxConfigBase::DontCreateOnDemand();
+  }
+  else
+    wxLogError("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", x);
+  pConfig->Write("/MainFrame/y", y);
+  pConfig->Write("/MainFrame/w", w);
+  pConfig->Write("/MainFrame/h", h);
+}