오다기리 박의 알고리즘 노트

[핵심 API로 배우는 윈도우프로그래밍(강경우, 한빛아카데미)] 9장 2번 풀이 본문

WIN32 API

[핵심 API로 배우는 윈도우프로그래밍(강경우, 한빛아카데미)] 9장 2번 풀이

오다기리 박 2018. 1. 9. 17:59

-서버 cpp파일-

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//논블로킹 단방향통신에서 서버가 클라이언트로 메시지를 보내는 코드를 추가한다.
#include <Windows.h>
#include<tchar.h>
#include<string.h>
#include<stdio.h>
#include"resource.h"
#define WM_ASYNC WM_USER+2
//#pragma comment(linker,"/entry:WinMainCRTStartup /subsystem:console")
LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam);
HINSTANCE hInst;
 
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow)
{
    HWND hwnd;
    MSG msg;
    WNDCLASS WndClass;
 
    hInst = hInstance;
    WndClass.style = CS_HREDRAW | CS_VREDRAW;
    WndClass.lpfnWndProc = WndProc;
    WndClass.cbClsExtra = 0;
    WndClass.cbWndExtra = 0;
    WndClass.hInstance = hInstance;
    WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
    WndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    WndClass.lpszMenuName = MAKEINTRESOURCE(IDR_MENU1);
    WndClass.lpszClassName = _T("Window Class Name");
 
    RegisterClass(&WndClass);
 
    hwnd = CreateWindow(
        _T("Window Class Name"),
        _T("Server Window"),
        WS_OVERLAPPEDWINDOW,
        50,
        50,
        700,
        700,
        NULL,
        NULL,
        hInstance,
        NULL);
 
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
 
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return (int)msg.wParam;
}
 
#define IDC_BUTTON1 102
LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    PAINTSTRUCT ps;
    static WSADATA wsadata;
    static SOCKET s, cs;
    static TCHAR msg[200];
    static HWND hButton1;
 
 
    static SOCKADDR_IN addr = { 0 }, c_addr;
    static int recv_x1 = 0, recv_x2 = 0, recv_y1 = 0, recv_y2 = 0;
    static int recv_shape = 0;
    static int pos_y = 0;
    static int mx = 0, my = 0;
 
    static bool Drag = false;
    static int x1 = 0, x2 = 0, y1 = 0, y2 = 0;
    static int shape = 0;
    static int token2[5];
 
    int  size, msgLen;
    char buffer[100];
    char *context;
    char *token;
    int i = 0;
 
    switch (iMsg)
    {
    case WM_CREATE:
        hButton1 = (HWND)CreateWindow(_T("button"), _T("전송"), WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON, 300, 0, 50, 20, hwnd, (HMENU)IDC_BUTTON1, hInst, NULL);
        WSAStartup(MAKEWORD(2, 2), &wsadata);            //1.윈속사용시작하기
        s = socket(AF_INET, SOCK_STREAM, 0);            //2.소켓 생성-클라이언트가 접속하기를 기다리는 소켓
        addr.sin_family = AF_INET;
        addr.sin_port = 20;
        addr.sin_addr.s_addr = inet_addr("127.0.0.1");
        bind(s, (LPSOCKADDR)&addr, sizeof(addr));        //3.주소와 소켓 연결하기
        WSAAsyncSelect(s, hwnd, WM_ASYNC, FD_ACCEPT);    //4.소켓s에서 상대방이 접속을 시도하는 이벤트가 발생하면 WM_ASYNC를 hwnd 윈도우에 발생시키위해 설정
        if (listen(s, 5) == -1)                            //5.연결 요구 기다리기
            return 0;
        break;
    case WM_ASYNC:                                        //WM_ASYNC메시지 발생시 lParam으로 어떤 이벤트가 발생했는지 구분
        switch (lParam)
        {
        case FD_ACCEPT:                                    //클라이언트가 접속을 시도하면
            size = sizeof(c_addr);                        //클라이언트와 통신하기 위한 소켓cs를 만들어 클라이언트와의 통신을 전담시킨다. 
            cs = accept(s, (LPSOCKADDR)&c_addr, &size);
            WSAAsyncSelect(cs, hwnd, WM_ASYNC, FD_READ);//클라이언트가 메시지를 보낼 때까지 무한정 기다릴 수 없으므로 FD_READ를 WM_ASYNC에 등록
            break;
        case FD_READ:
            msgLen = recv(cs, buffer, 100, 0);
            buffer[msgLen] = NULL;
#ifdef _UNICODE                    //프로젝트의 문자집합이 유니코드로 설정되어있다면
            msgLen = MultiByteToWideChar(CP_ACP, 0, buffer, strlen(buffer), NULL, NULL);
            MultiByteToWideChar(CP_ACP, 0, buffer, strlen(buffer), msg, msgLen);
            msg[msgLen] = NULL;
#else
            strcpy_s(msg, buffer);    //msg는 TCHAR형으로 선언되었기 때문에 문자 집합에 따라 WCHAR나 char로 자동변환된다
#endif // _UNICODE
            InvalidateRgn(hwnd, NULL, TRUE);
            break;
        default:
            break;
        }
        break;
    case WM_COMMAND:
        switch (LOWORD(wParam))
        {
        case IDC_BUTTON1:
            if (cs == INVALID_SOCKET)
            {
                MessageBox(hwnd, _T("소켓cs가 INVALID_SOCKET"), _T("알림"), NULL);
                break;
            }
            _stprintf_s(buffer, _T("%d,%d,%d,%d,%d"), shape, x1, y1, x2, y2);
            send(cs, buffer, 20, 0);
            break;
        case ID_LINE:
            shape = 1;
            break;
        case ID_ELLIPSE:
            shape = 2;
            break;
        case ID_RECTANGLE:
            shape = 3;
            break;
        }
        break;
    case WM_LBUTTONDOWN:
        Drag = true;
        x1 = LOWORD(lParam);
        y1 = HIWORD(lParam);
        x2 = LOWORD(lParam);
        y2 = HIWORD(lParam);
        break;
    case WM_MOUSEMOVE:
        if (Drag)
        {
            x2 = LOWORD(lParam);
            y2 = HIWORD(lParam);
            InvalidateRgn(hwnd, NULL, TRUE);
        }
        break;
    case WM_LBUTTONUP:
        Drag = false;
        x2 = LOWORD(lParam);
        y2 = HIWORD(lParam);
        break;
    case WM_PAINT:
        hdc = BeginPaint(hwnd, &ps);
        if (msg != NULL && !Drag)
        {
            context = NULL;
            token = strtok_s(msg, ",", &context);            //context에는 분리된 후 남은 문자열이 들어간다.
            while (token != NULL)
            {
                token2[i++] = atoi(token);
                token = strtok_s(NULL, ",", &context);
                pos_y += 20;
            }
            recv_shape = token2[0];
            recv_x1 = token2[1];
            recv_y1 = token2[2];
            recv_x2 = token2[3];
            recv_y2 = token2[4];
            InvalidateRgn(hwnd, NULL,FALSE);
        }
        switch (recv_shape)
        {
        case 1:
            MoveToEx(hdc, recv_x1, recv_y1, NULL);
            LineTo(hdc, recv_x2, recv_y2);
            break;
        case 2:
            Ellipse(hdc, recv_x1, recv_y1, recv_x2, recv_y2);
            break;
        case 3:
            Rectangle(hdc, recv_x1, recv_y1, recv_x2, recv_y2);
            break;
        }
        switch (shape)
        {
        case 1:
            MoveToEx(hdc, x1, y1, NULL);
            LineTo(hdc, x2, y2);
            break;
        case 2:
            Ellipse(hdc, x1, y1, x2, y2);
            break;
        case 3:
            Rectangle(hdc, x1, y1, x2, y2);
            break;
        }
        EndPaint(hwnd, &ps);
        break;
    case WM_DESTROY:
        closesocket(s);
        WSACleanup();
        PostQuitMessage(0);
        break;
    }
    return DefWindowProc(hwnd, iMsg, wParam, lParam);
}
cs


-클라이언트 cpp파일-

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//6번소스와 동일
#include <Windows.h>
#include<tchar.h>
#include<string.h>
#include<stdio.h>
#include<stdlib.h>
#include"resource.h"
LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam);
HINSTANCE hInst;
#define WM_ASYNC WM_USER+2
 
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow)
{
    HWND hwnd;
    MSG msg;
    WNDCLASS WndClass;
 
    hInst = hInstance;
    WndClass.style = CS_HREDRAW | CS_VREDRAW;
    WndClass.lpfnWndProc = WndProc;
    WndClass.cbClsExtra = 0;
    WndClass.cbWndExtra = 0;
    WndClass.hInstance = hInstance;
    WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
    WndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    WndClass.lpszMenuName = MAKEINTRESOURCE(IDR_MENU1);
    WndClass.lpszClassName = _T("Window Class Name");
 
    RegisterClass(&WndClass);
 
    hwnd = CreateWindow(
        _T("Window Class Name"),
        _T("Client Window"),
        WS_OVERLAPPEDWINDOW,
        50,
        50,
        700,
        700,
        NULL,
        NULL,
        hInstance,
        NULL);
 
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
 
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return (int)msg.wParam;
}
#define IDC_BUTTON1 102
LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    PAINTSTRUCT ps;
    static WSADATA wsadata;
    static SOCKET s;
    static SOCKADDR_IN addr = { 0 };
    static TCHAR msg[200];
    static HWND hButton1;
 
    
    static int x1 = 0, x2 = 0, y1 = 0, y2 = 0;
    static int shape = 0;
    static int recv_x1 = 0, recv_x2 = 0, recv_y1 = 0, recv_y2 = 0;
    static int recv_shape = 0;
    
    static int token2[5];
    static int mx = 0, my = 0;
    static bool Drag = false;
    
    int msgLen;
    char buffer[100];
    char *context;
    char *token;
    int pos_y = 0;
    int i = 0;
 
    switch (iMsg)
    {
    case WM_CREATE:
        hButton1 = (HWND)CreateWindow(_T("button"), _T("전송"), WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON, 300, 0, 50, 20, hwnd, (HMENU)IDC_BUTTON1, hInst, NULL);
        WSAStartup(MAKEWORD(2, 2), &wsadata);                    //1.윈속 사용시작하기
        s = socket(AF_INET, SOCK_STREAM, 0);                    //2.소켓 생성하기
        addr.sin_family = AF_INET;
        addr.sin_port = 20;
        addr.sin_addr.s_addr = inet_addr("127.0.0.1");
        WSAAsyncSelect(s, hwnd, WM_ASYNC, FD_READ);                //서버에서 보낸 데이터를 받아야 하므로 FD_READ 이벤트에 대해 WM_ASYNC윈도우 메시지를 등록
        if (connect(s, (LPSOCKADDR)&addr, sizeof(addr)) == -1)    //3.연결 요구하기(접속실패시 종료)
            return 0;
        break;
    case WM_ASYNC:                                                //양방향 통신이므로 클라이언트가 다른 메시지를 처리하는 도중 서버에서 데이터를 보내면
        switch (lParam)                                            //WM_ASYNC와 lParam이 같이 도착한다.
        {
        case FD_READ:
            msgLen = recv(s, buffer, 100, 0);
            buffer[msgLen] = NULL;
#ifdef _UNICODE                    //프로젝트의 문자집합이 유니코드로 설정되어있다면
            msgLen = MultiByteToWideChar(CP_ACP, 0, buffer, strlen(buffer), NULL, NULL);
            MultiByteToWideChar(CP_ACP, 0, buffer, strlen(buffer), msg, msgLen);
            msg[msgLen] = NULL;
#else
            strcpy_s(msg, buffer);    //msg는 TCHAR형으로 선언되었기 때문에 문자 집합에 따라 WCHAR나 char로 자동변환된다
#endif // _UNICODE
            InvalidateRgn(hwnd, NULL, TRUE);
            break;
        default:
            break;
        }
        break;
    case WM_COMMAND:
        switch (LOWORD(wParam))
        {
        case IDC_BUTTON1:
            if (s == INVALID_SOCKET)
            {
                MessageBox(hwnd, _T("소켓s가 INVALID_SOCKET"), _T("알림"), NULL);
                break;
            }
            _stprintf_s(buffer, _T("%d,%d,%d,%d,%d"), shape, x1, y1, x2, y2);
            send(s, buffer, 20, 0);
            break;
        case ID_LINE:
            shape = 1;
            break;
        case ID_ELLIPSE:
            shape = 2;
            break;
        case ID_RECTANGLE:
            shape = 3;
            break;
        }
        break;
    case WM_LBUTTONDOWN:
        Drag = true;
        x1 = LOWORD(lParam);
        y1 = HIWORD(lParam);
        x2 = LOWORD(lParam);
        y2 = HIWORD(lParam);
        //InvalidateRgn(hwnd, NULL, TRUE);
        break;
    case WM_MOUSEMOVE:
        if (Drag)
        {
            x2 = LOWORD(lParam);
            y2 = HIWORD(lParam);
            InvalidateRgn(hwnd, NULL, TRUE);
        }
        break;
    case WM_LBUTTONUP:
        Drag = false;
        x2 = LOWORD(lParam);
        y2 = HIWORD(lParam);
        InvalidateRgn(hwnd, NULL, TRUE);
        break;
 
    case WM_PAINT:
        hdc = BeginPaint(hwnd, &ps);
        if (msg != NULL && !Drag)
        {
            context = NULL;
            token = strtok_s(msg, ",", &context);            //context에는 분리된 후 남은 문자열이 들어간다.
            while (token != NULL)
            {
                token2[i++] = atoi(token);
                //TextOut(hdc, 0, pos_y, token, _tcslen(token));
                token = strtok_s(NULL, ",", &context);
                pos_y += 20;
            }
            recv_shape = token2[0];
            recv_x1 = token2[1];
            recv_y1 = token2[2];
            recv_x2 = token2[3];
            recv_y2 = token2[4];
            InvalidateRgn(hwnd, NULL, FALSE);
        }
        
        switch (recv_shape)
        {
        case 1:
            MoveToEx(hdc, recv_x1, recv_y1, NULL);
            LineTo(hdc, recv_x2, recv_y2);
            break;
        case 2:
            Ellipse(hdc, recv_x1, recv_y1, recv_x2, recv_y2);
            break;
        case 3:
            Rectangle(hdc, recv_x1, recv_y1, recv_x2, recv_y2);
            break;
        }
        switch (shape)
        {
        case 1:
            MoveToEx(hdc, x1, y1, NULL);
            LineTo(hdc, x2, y2);
            break;
        case 2:
            Ellipse(hdc, x1, y1, x2, y2);
            break;
        case 3:
            Rectangle(hdc, x1, y1, x2, y2);
            break;
        }
        EndPaint(hwnd, &ps);
        break;
    case WM_DESTROY:
        closesocket(s);
        WSACleanup();
        PostQuitMessage(0);
        break;
 
    }
    return DefWindowProc(hwnd, iMsg, wParam, lParam);
}
cs


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