// Name:        minimal.cpp

// Purpose:     Minimal wxWidgets sample

// Author:      Julian Smart

#include "wx/wx.h"

// Declare the application class

//定义应用程序类

class MyApp : public wxApp

{

public:

    // Called on application startup

    //这个函数将会在程序启动的时候被调用

    virtual bool OnInit();

};

// Declare our main frame class

//定义主窗口类

class MyFrame : public wxFrame

{

public:

    // Constructor

    //主窗口类的构造函数

    MyFrame(const wxString& title);

    // Event handlers

    //事件处理函数

    void OnQuit(wxCommandEvent& event);

    void OnAbout(wxCommandEvent& event);

private:

    // This class handles events

    //声明事件表

    DECLARE_EVENT_TABLE()

};

// Implements MyApp& GetApp()

//有了这一行就可以使用MyApp & wxGetApp()了

DECLARE_APP(MyApp)

// Give wxWidgets the means to create a MyApp object

//告诉主应用程序是哪个类的wxWidgets

IMPLEMENT_APP(MyApp)

// Initialize the application

//初始化程序

bool MyApp::OnInit()

{

    // Create the main application window

    //创建主窗口

    MyFrame *frame = new MyFrame(wxT("Minimal wxWidgets App"));

    // Show it

    // 显示主窗口

    frame->Show(true);

    // Start the event loop

    //开始事件处理循环

    return true;

}

// Event table for MyFrame

//类的事件表MyFrame

BEGIN_EVENT_TABLE(MyFrame, wxFrame)

    EVT_MENU(wxID_ABOUT, MyFrame::OnAbout)

    EVT_MENU(wxID_EXIT,  MyFrame::OnQuit)

END_EVENT_TABLE()

void MyFrame::OnAbout(wxCommandEvent& event)

{

    wxString msg;

    msg.Printf(wxT("Hello and welcome to %s"), wxVERSION_STRING);

    wxMessageBox(msg, wxT("About Minimal"), wxOK | wxICON_INFORMATION, this);

}

void MyFrame::OnQuit(wxCommandEvent& event)

{

    // Destroy the frame

    //释放主窗口

    Close();

}

#include "mondrian.xpm"

MyFrame::MyFrame(const wxString& title)

       : wxFrame(NULL, wxID_ANY, title)

{

    // Set the frame icon

    //设置窗口图标

    SetIcon(wxIcon(mondrian_xpm));

    // Create a menu bar

    //创建菜单条

    wxMenu *fileMenu = new wxMenu;

    wxMenu *helpMenu = new wxMenu;

    // The "About" item should be in the help menu

    //添加“关于菜单项”

    helpMenu->Append(wxID_ABOUT, wxT("&About...\tF1"), wxT("Show about dialog"));

    fileMenu->Append(wxID_EXIT, wxT("E&xit\tAlt-X"), wxT("Quit this program"));

    // Now append the freshly created menu to the menu bar...

    //将菜单项添加到菜单条中

    wxMenuBar *menuBar = new wxMenuBar();

    menuBar->Append(fileMenu, wxT("&File"));

    menuBar->Append(helpMenu, wxT("&Help"));

    // ... and attach this menu bar to the frame

    //然后将菜单条放置在主窗口上

    SetMenuBar(menuBar);

    // Create a status bar just for fun

    //创建一个状态条让一切更有趣些

    CreateStatusBar();

    SetStatusText(wxT("Welcome to wxWidgets!"));

}