Visual Studio 2017中创建Windows桌面程序时的默认模板

//WindowsProject1.cpp: 定义应用程序的入口点。//#include "stdafx.h"#include "WindowsProject1.h"#define MAX_LOADSTRING 100// 全局变量: HINSTANCE hInst;                                // 当前实例WCHAR szTitle[MAX_LOADSTRING];                  // 标题栏文本WCHAR szWindowClass[MAX_LOADSTRING];            // 主窗口类名// 此代码模块中包含的函数的前向声明: ATOM                MyRegisterClass(HINSTANCE hInstance);BOOL                InitInstance(HINSTANCE, int);LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);INT_PTR CALLBACK    About(HWND, UINT, WPARAM, LPARAM);int APIENTRY wWinMain(_In_ HINSTANCE hInstance,                     _In_opt_ HINSTANCE hPrevInstance,                     _In_ LPWSTR    lpCmdLine,                     _In_ int       nCmdShow){    UNREFERENCED_PARAMETER(hPrevInstance);    UNREFERENCED_PARAMETER(lpCmdLine);    // TODO: 在此放置代码。    // 初始化全局字符串    LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);    LoadStringW(hInstance, IDC_WINDOWSPROJECT1, szWindowClass, MAX_LOADSTRING);    MyRegisterClass(hInstance);    // 执行应用程序初始化:     if (!InitInstance (hInstance, nCmdShow))    {        return FALSE;    }    HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WINDOWSPROJECT1));    MSG msg;    // 主消息循环:     while (GetMessage(&msg, nullptr, 0, 0))    {        if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))        {            TranslateMessage(&msg);            DispatchMessage(&msg);        }    }    return (int) msg.wParam;}////  函数: MyRegisterClass()////  目的: 注册窗口类。//ATOM MyRegisterClass(HINSTANCE hInstance){    WNDCLASSEXW wcex;    wcex.cbSize = sizeof(WNDCLASSEX);    wcex.style          = CS_HREDRAW | CS_VREDRAW;    wcex.lpfnWndProc    = WndProc;    wcex.cbClsExtra     = 0;    wcex.cbWndExtra     = 0;    wcex.hInstance      = hInstance;    wcex.hIcon          = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_WINDOWSPROJECT1));    wcex.hCursor        = LoadCursor(nullptr, IDC_ARROW);    wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);    wcex.lpszMenuName   = MAKEINTRESOURCEW(IDC_WINDOWSPROJECT1);    wcex.lpszClassName  = szWindowClass;    wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));    return RegisterClassExW(&wcex);}////   函数: InitInstance(HINSTANCE, int)////   目的: 保存实例句柄并创建主窗口////   注释: ////        在此函数中，我们在全局变量中保存实例句柄并//        创建和显示主程序窗口。//BOOL InitInstance(HINSTANCE hInstance, int nCmdShow){   hInst = hInstance; // 将实例句柄存储在全局变量中   HWND hWnd = CreateWindowW(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, hInstance, nullptr);   if (!hWnd)   {      return FALSE;   }   ShowWindow(hWnd, nCmdShow);   UpdateWindow(hWnd);   return TRUE;}////  函数: WndProc(HWND, UINT, WPARAM, LPARAM)////  目的:    处理主窗口的消息。////  WM_COMMAND  - 处理应用程序菜单//  WM_PAINT    - 绘制主窗口//  WM_DESTROY  - 发送退出消息并返回////LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){    switch (message)    {    case WM_COMMAND:        {            int wmId = LOWORD(wParam);            // 分析菜单选择:             switch (wmId)            {            case IDM_ABOUT:                DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);                break;            case IDM_EXIT:                DestroyWindow(hWnd);                break;            default:                return DefWindowProc(hWnd, message, wParam, lParam);            }        }        break;    case WM_PAINT:        {            PAINTSTRUCT ps;            HDC hdc = BeginPaint(hWnd, &ps);            // TODO: 在此处添加使用 hdc 的任何绘图代码...            EndPaint(hWnd, &ps);        }        break;    case WM_DESTROY:        PostQuitMessage(0);        break;    default:        return DefWindowProc(hWnd, message, wParam, lParam);    }    return 0;}// “关于”框的消息处理程序。INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam){    UNREFERENCED_PARAMETER(lParam);    switch (message)    {    case WM_INITDIALOG:        return (INT_PTR)TRUE;    case WM_COMMAND:        if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)        {            EndDialog(hDlg, LOWORD(wParam));            return (INT_PTR)TRUE;        }        break;    }    return (INT_PTR)FALSE;}