CTime m_Time = CTime::GetCurrentTime();
int nYear = m_Time.GetYear();
int nMonth = m_Time.GetMonth();
int nDay = m_Time.GetDay();
int nHour = m_Time.GetHour();
int nMinute = m_Time.GetMinute();
int nSecond = m_Time.GetSecond();

CString str(L"大大大");

CString str1;
str1 = L"小小小";

CString str2 = str1;

CString str3 = L'A';

CString str4(L"A",66);

CString str;
int nFlag = 100;
char strz[] = "Hello World!";
str.Format(L"char = %S int = %d", strz, nFlag);

int count = str.GetLength();

bool flag = str.IsEmpty();

CString A(L"A");
CString B(L"B");
A = A + B;

CString A(L"ABCDEFGH");
CString B = A.Left(2);
CString C = A.Mid(2, 2);
CString D = A.Right(2);

CString A(L"ABCDEFGH");
A.Remove(L"A");

CString A(L"ABCDEFGH");
LPTSTR TSTR = A.GetBuffer();

typedef struct tagMSG{
    HWND hwnd;
    UINT message;
    WPARAM wParam;
    LPARAM lParam;
    DWORD time;
    POINT pt;
#ifdef _MAC
	DWORD lPrivate;
#endif
} 	MSG, *PMSG, NEAR *NPMSG, FAR *LPMSG;

typedef struct tagDRAWITEMSTRUCT {
    UINT        CtlType;
    UINT        CtlID;
    UINT        itemID;
    UINT        itemAction;
    UINT        itemState;
    HWND        hwndItem;
    HDC         hDC;
    RECT        rcItem;
    ULONG_PTR   itemData;
} DRAWITEMSTRUCT, NEAR *PDRAWITEMSTRUCT, FAR *LPDRAWITEMSTRUCT;

typedef struct tagNMHDR
{
    HWND      hwndFrom;
    UINT_PTR  idFrom;
    UINT      code;         // NM_ code
}   NMHDR;

typedef struct tagLVKEYDOWN
{
    NMHDR hdr;
    WORD wVKey;
    UINT flags;
} NMLVKEYDOWN, *LPNMLVKEYDOWN;

#define MY_MSG WM_USER+1

// WindowsSDK.cpp : 定义应用程序的入口点。
//

#include "framework.h"
#include "WindowsSDK.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: 在此处放置代码。

    // 初始化全局字符串
    LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
    LoadStringW(hInstance, IDC_WINDOWSSDK, 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_WINDOWSSDK));

    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()
//
//  目标: 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_WINDOWSSDK));
    wcex.hCursor        = LoadCursor(nullptr, IDC_ARROW);
    wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
    wcex.lpszMenuName   = MAKEINTRESOURCEW(IDC_WINDOWSSDK);
    wcex.lpszClassName  = szWindowClass;
    wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

    return RegisterClassExW(&wcex);
}

//
//   函数: InitInstance(HINSTANCE, int)
//
//   目标: 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)
//
//  目标: 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;
}

BOOL CMFCKeyDlg::PreTranslateMessage(MSG* pMsg)
{
	// TODO: 在此添加专用代码和/或调用基类
	SHORT nShift = GetKeyState(VK_SHIFT);

	switch (pMsg->message)
	{
	case WM_KEYDOWN:
	{

		switch (pMsg->wParam)
		{
		case VK_F2:
		{
			if (nShift < 0)
			{
				AfxMessageBox(L"F2 + shift Message!");
				break;
			}
			AfxMessageBox(L"F2 Message!");
			break;
		}
		case 0x41:
		{
			AfxMessageBox(L"A Message!");
			break;
		}
		case VK_ESCAPE:
			return 0;
		case VK_RETURN:
			return 0;
		default:
			break;
		}
		break;
	}
			
	default:
		break;
	}
	return CDialogEx::PreTranslateMessage(pMsg);
}

switch (pMsg->message)
	{
	case WM_LBUTTONDOWN:
	{
		AfxMessageBox(L"客户区鼠标左键点击");
		break;
	}
	case WM_NCLBUTTONDOWN:
	{
		AfxMessageBox(L"非客户区鼠标左键点击");
		break;
	}
	case WM_LBUTTONDBLCLK:
	{
		AfxMessageBox(L"客户区鼠标左键双击");
		break;
	}
	case WM_NCLBUTTONDBLCLK:
	{
		AfxMessageBox(L"非客户区鼠标左键双击");
		break;
	}
	case WM_LBUTTONUP:
	{
		AfxMessageBox(L"鼠标左键被释放");
		break;
	}
	default:
		break;
	}

#include <Windows.h>

int main()
{
	DWORD dwCount;
	HANDLE hStd = GetStdHandle(STD_OUTPUT_HANDLE);
	SetConsoleTextAttribute(hStd, FOREGROUND_RED | FOREGROUND_BLUE | BACKGROUND_BLUE);
	WriteConsole(hStd, L"Hello World!", wcslen(L"Hello World!"), &dwCount, NULL);
	SetConsoleTitle(L"Title");
	return 0;
}

HANDLE hHeap = GetProcessHeap();
char * str = (char*)HeapAlloc(hHeap, HEAP_ZERO_MEMORY, 0x100);
HeapFree(hHeap, 0, str);

#include <Windows.h>

int main()
{
	HANDLE hFile = CreateFile(L"C:\\Users\\15890\\Desktop\\Test.txt",GENERIC_ALL,NULL,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
	if (INVALID_HANDLE_VALUE == hFile)
	{
		MessageBox(0, L"CreateFile Failed!", L"Error", MB_OK);
		ExitProcess(0);
		system("pause");
	}
	DWORD dwFileLen = GetFileSize(hFile, NULL);
	PTCHAR szBuffer;
	HANDLE hHeap = GetProcessHeap();
	szBuffer = (PTCHAR)HeapAlloc(hHeap, HEAP_ZERO_MEMORY, dwFileLen);
	DWORD dwReadSize;
	ReadFile(hFile, szBuffer, dwFileLen,&dwReadSize, NULL);
	CHAR szWriteBuffer[] = "Hello Windows API";
	DWORD dwWriteSize;
	WriteFile(hFile, szWriteBuffer,strlen(szWriteBuffer), &dwWriteSize, NULL);
	HeapFree(hHeap, 0, szBuffer);
	CloseHandle(hFile);
	return 0;
}

CFile cFile;
cFile.Open(L"C:\\Users\\15890\\Desktop\\Test.txt", CFile::modeReadWrite);
DWORD dwFileLen = cFile.GetLength();
PTCHAR szBuffer;
HANDLE hHeap = GetProcessHeap();
szBuffer = (PTCHAR)HeapAlloc(hHeap, HEAP_ZERO_MEMORY, dwFileLen);
cFile.Read(szBuffer, dwFileLen);
CHAR pbufWrite[] = "Hello CFile";
cFile.Write(pbufWrite, strlen(pbufWrite));
cFile.Flush();

DWORD ret = MessageBox(L"Hello World!", L"Title", MB_YESNO);
if (ret == IDYES)
{
	MessageBox(L"Yes", L"Tip", MB_OK);
}
else if(ret == IDNO)
{
	MessageBox(L"No", L"Tip", MB_OK);
}

DWORD ret = AfxMessageBox(L"Hello World!", MB_YESNO);
if (ret == IDYES)
{
	AfxMessageBox(L"Yes", MB_OK);
}
else if (ret == IDNO)
{
	AfxMessageBox(L"No", MB_OK);
}

void CMFCAppModDlg::OnBnClickedButton1()
{
	// TODO: 在此添加控件通知处理程序代码
	CDialogMod dlg;
	dlg.DoModal();
}

void CMFCAppModDlg::OnBnClickedButton2()
{
	// TODO: 在此添加控件通知处理程序代码
	CDialogModLess* m_Dlg = NULL;
	if (!m_Dlg)
	{
		m_Dlg = new CDialogModLess;
		m_Dlg->Create(IDD_DIALOG2,this);
		m_Dlg->ShowWindow(SW_SHOW);
	}
}

CFileDialog m_dlg(TRUE, NULL, NULL, NULL, L"文本文件|*.txt|可执行文件|*.exe|所有文件|*.*||", this);
m_dlg.DoModal();
CString szPath = m_dlg.GetPathName();
if(!szPath.IsEmpty())
	AfxMessageBox(szPath);

m_StatusBar.Create(this);
UINT arr[] = { 1,2,3 };
m_StatusBar.SetIndicators(arr, 3);
m_StatusBar.SetPaneInfo(0, arr[0], SBPS_NORMAL, 100);
m_StatusBar.SetPaneInfo(1, arr[1], SBPS_NORMAL, 100);
m_StatusBar.SetPaneInfo(2, arr[2], SBPS_NORMAL, 100);
m_StatusBar.SetPaneText(0, L"Text1");
m_StatusBar.SetPaneText(1, L"Text2");
m_StatusBar.SetPaneText(2, L"Text3");
RepositionBars(AFX_IDW_CONTROLBAR_FIRST, AFX_IDW_CONTROLBAR_LAST, 0);

m_Tab.InsertItem(0, L"Text");
m_Tab.InsertItem(1, L"List");
m_Tab.InsertItem(2, L"Tree");
m_Tab.InsertItem(3, L"Other");

m_dlgText.Create(IDD_DIALOG1, &m_Tab);
m_dlgList.Create(IDD_DIALOG2, &m_Tab);
m_dlgTree.Create(IDD_DIALOG3, &m_Tab);
m_dlgOther.Create(IDD_DIALOG4, &m_Tab);

CRect rs;
m_Tab.GetClientRect(rs);
rs.top += 20;
m_dlgText.MoveWindow(rs);
m_dlgList.MoveWindow(rs);
m_dlgTree.MoveWindow(rs);
m_dlgOther.MoveWindow(rs);
m_dlgText.ShowWindow(SW_SHOW);

int nCurSel;
nCurSel = m_Tab.GetCurSel();
switch (nCurSel)
{
case 0:
{
	m_dlgText.ShowWindow(SW_SHOW);
	m_dlgList.ShowWindow(SW_HIDE);
	m_dlgTree.ShowWindow(SW_HIDE);
	m_dlgOther.ShowWindow(SW_HIDE);
	break;
}
case 1:
{
	m_dlgText.ShowWindow(SW_HIDE);
	m_dlgList.ShowWindow(SW_SHOW);
	m_dlgTree.ShowWindow(SW_HIDE);
	m_dlgOther.ShowWindow(SW_HIDE);
	break;
}
case 2:
{
	m_dlgText.ShowWindow(SW_HIDE);
	m_dlgList.ShowWindow(SW_HIDE);
	m_dlgTree.ShowWindow(SW_SHOW);
	m_dlgOther.ShowWindow(SW_HIDE);
	break;
}
case 3:
{
	m_dlgText.ShowWindow(SW_HIDE);
	m_dlgList.ShowWindow(SW_HIDE);
	m_dlgTree.ShowWindow(SW_HIDE);
	m_dlgOther.ShowWindow(SW_SHOW);
	break;
}
default:
	break;
}

RegisterHotKey(m_hWnd, HOT_KEY_MESSAGEBOX, MOD_WIN, VK_F2);

void CMFCAppUseDlg::OnHotKey(UINT nHotKeyId, UINT nKey1, UINT nKey2)
{
	// TODO: 在此添加消息处理程序代码和/或调用默认值
	switch (nHotKeyId)
	{
	case HOT_KEY_MESSAGEBOX:
	{
		AfxMessageBox(
			L"\u2764\u2721\u262a\u2600\u2602\u2622\u2648\u2649\u264a\u264b\u264c\u264d"
			L"\u264e\u264f\u2650\u2651\u2652\u2653\u2690\u2691\u26c4\u2620\u27bc\u2200"
		);
		break;
	}
	default:
		break;
	}
	CDialogEx::OnHotKey(nHotKeyId, nKey1, nKey2);
}