/////////////////////////////////////////////////////////////////////////////// Name:        minimal.cpp// Purpose:     Minimal wxWindows sample// Author:      Julian Smart// Modified by:// Created:     04/01/98// RCS-ID:      $Id: minimal.cpp,v 1.1 2005/01/27 22:47:37 VS Exp $// Copyright:   (c) Julian Smart// Licence:     wxWindows licence/////////////////////////////////////////////////////////////////////////////// ============================================================================// declarations// ============================================================================// ----------------------------------------------------------------------------// headers// ----------------------------------------------------------------------------// For compilers that support precompilation, includes "wx/wx.h".#include "wx/wxprec.h"#ifdef __BORLANDC__    #pragma hdrstop#endif// for all others, include the necessary headers (this file is usually all you// need because it includes almost all "standard" wxWindows headers)#ifndef WX_PRECOMP    #include "wx/wx.h"#endif// ----------------------------------------------------------------------------// resources// ----------------------------------------------------------------------------// ----------------------------------------------------------------------------// private classes// ----------------------------------------------------------------------------// Define a new application type, each program should derive a class from wxAppclass MyApp : public wxApp{public:    // override base class virtuals    // ----------------------------    // this one is called on application startup and is a good place for the app    // initialization (doing it here and not in the ctor allows to have an error    // return: if OnInit() returns false, the application terminates)    virtual bool OnInit();};// Define a new frame type: this is going to be our main frameclass MyFrame : public wxFrame{public:    // ctor(s)    MyFrame(const wxString& title);    // event handlers (these functions should _not_ be virtual)    void OnQuit(wxCommandEvent& event);    void OnAbout(wxCommandEvent& event);private:    // any class wishing to process wxWindows events must use this macro    DECLARE_EVENT_TABLE()};// ----------------------------------------------------------------------------// constants// ----------------------------------------------------------------------------// IDs for the controls and the menu commandsenum{    // menu items    Minimal_Quit = wxID_EXIT,    // it is important for the id corresponding to the "About" command to have    // this standard value as otherwise it won't be handled properly under Mac    // (where it is special and put into the "Apple" menu)    Minimal_About = wxID_ABOUT};// ----------------------------------------------------------------------------// event tables and other macros for wxWindows// ----------------------------------------------------------------------------// the event tables connect the wxWindows events with the functions (event// handlers) which process them. It can be also done at run-time, but for the// simple menu events like this the static method is much simpler.BEGIN_EVENT_TABLE(MyFrame, wxFrame)    EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)    EVT_MENU(Minimal_About, MyFrame::OnAbout)END_EVENT_TABLE()// Create a new application object: this macro will allow wxWindows to create// the application object during program execution (it's better than using a// static object for many reasons) and also implements the accessor function// wxGetApp() which will return the reference of the right type (i.e. MyApp and// not wxApp)IMPLEMENT_APP(MyApp)// ============================================================================// implementation// ============================================================================// ----------------------------------------------------------------------------// the application class// ----------------------------------------------------------------------------// 'Main program' equivalent: the program execution "starts" herebool MyApp::OnInit(){    // create the main application window    MyFrame *frame = new MyFrame(_T("Minimal wxWindows App"));    // and show it (the frames, unlike simple controls, are not shown when    // created initially)    frame->Show(true);    // success: wxApp::OnRun() will be called which will enter the main message    // loop and the application will run. If we returned false here, the    // application would exit immediately.    return true;}// ----------------------------------------------------------------------------// main frame// ----------------------------------------------------------------------------// frame constructorMyFrame::MyFrame(const wxString& title)       : wxFrame(NULL, wxID_ANY, title){    // set the frame icon#if wxUSE_MENUS    // create a menu bar    wxMenu *menuFile = new wxMenu;    // the "About" item should be in the help menu    wxMenu *helpMenu = new wxMenu;    helpMenu->Append(Minimal_About, _T("&About...\tF1"), _T("Show about dialog"));    menuFile->Append(Minimal_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));    // now append the freshly created menu to the menu bar...    wxMenuBar *menuBar = new wxMenuBar();    menuBar->Append(menuFile, _T("&File"));    menuBar->Append(helpMenu, _T("&Help"));    // ... and attach this menu bar to the frame    SetMenuBar(menuBar);#endif // wxUSE_MENUS#if wxUSE_STATUSBAR    // create a status bar just for fun (by default with 1 pane only)    CreateStatusBar(2);    SetStatusText(_T("Welcome to wxWindows!"));#endif // wxUSE_STATUSBAR}// event handlersvoid MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)){    // true is to force the frame to close    Close(true);}void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)){    wxString msg;    msg.Printf( _T("This is the About dialog of the minimal sample.\n")                _T("Welcome to %s"), wxVERSION_STRING);    wxMessageBox(msg, _T("About Minimal"), wxOK | wxICON_INFORMATION, this);}