[핵심 API로 배우는 윈도우프로그래밍(강경우, 한빛아카데미)] 5장 9번 풀이

#include <Windows.h>
#include<tchar.h>
#include<string.h>
#include<math.h>
#include<stdio.h>
#include"resource.h"
//#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;
    hInst = hInstance;
    WNDCLASS WndClass;
    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 = NULL;
    WndClass.lpszClassName = _T("Window Class Name");
    WndClass.lpszMenuName = MAKEINTRESOURCE(IDR_MENU1);
    RegisterClass(&WndClass);
 
    hwnd = CreateWindow(
        _T("Window Class Name"),
        _T("홍길동의 첫 번째 윈도우"),
        WS_OVERLAPPEDWINDOW,
        50,
        50,
        1000,
        700,
        NULL,
        NULL,
        hInstance,
        NULL);
 
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
 
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return (int)msg.wParam;
}
 
LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
    HDC hdc, mem1dc;
    PAINTSTRUCT ps;
    HPEN hPen, oldPen;
    static HBITMAP hBit, oldBit;
    static int BY = 1;
    static int stdX = 0, stdY = 0;
    static int Image[5][5];
    static int tempX, tempY;
    static bool DUP = false, GAMESTART = false, DEVIDE = false;
    struct POS
    {
        int ImageX, ImageY;
    };
    static POS pos[5][5];
    int temp;
    switch (iMsg)
    {
    case WM_CREATE:
        hBit = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_BITMAP5));
        break;
    case WM_KEYDOWN:
        switch (wParam)
        {
        case VK_RIGHT:
            if (stdX < BY - 1)
            {
                temp = pos[stdX][stdY].ImageX;
                pos[stdX][stdY].ImageX = pos[stdX + 1][stdY].ImageX;
                pos[stdX + 1][stdY].ImageX = temp;
 
                temp = pos[stdX][stdY].ImageY;
                pos[stdX][stdY].ImageY = pos[stdX + 1][stdY].ImageY;
                pos[stdX + 1][stdY].ImageY = temp;
                stdX++;
            }
            break;
        case VK_LEFT:
            if (stdX > 0)
            {
                temp = pos[stdX][stdY].ImageX;
                pos[stdX][stdY].ImageX = pos[stdX - 1][stdY].ImageX;
                pos[stdX - 1][stdY].ImageX = temp;
 
                temp = pos[stdX][stdY].ImageY;
                pos[stdX][stdY].ImageY = pos[stdX - 1][stdY].ImageY;
                pos[stdX - 1][stdY].ImageY = temp;
                stdX--;
            }
            break;
        case VK_UP:
            if (stdY > 0)
            {
                temp = pos[stdX][stdY].ImageX;
                pos[stdX][stdY].ImageX = pos[stdX][stdY - 1].ImageX;
                pos[stdX][stdY - 1].ImageX = temp;
 
                temp = pos[stdX][stdY].ImageY;
                pos[stdX][stdY].ImageY = pos[stdX][stdY - 1].ImageY;
                pos[stdX][stdY - 1].ImageY = temp;
                stdY--;
            }
            break;
        case VK_DOWN:
            if (stdY < BY - 1)
            {
                temp = pos[stdX][stdY].ImageX;
                pos[stdX][stdY].ImageX = pos[stdX][stdY + 1].ImageX;
                pos[stdX][stdY + 1].ImageX = temp;
 
                temp = pos[stdX][stdY].ImageY;
                pos[stdX][stdY].ImageY = pos[stdX][stdY + 1].ImageY;
                pos[stdX][stdY + 1].ImageY = temp;
                stdY++;
            }
            break;
        }
        InvalidateRgn(hwnd, NULL, TRUE);
        break;
    case WM_COMMAND:
        switch (LOWORD(wParam))
        {
        case ID_3BY3:
            BY = 3;
            break;
        case ID_4BY4:
            BY = 4;
            break;
        case ID_5BY5:
            BY = 5;
            break;
        case ID_GAMESTART:
            GAMESTART = true;
            InvalidateRgn(hwnd, NULL, TRUE);
            break;
        case ID_OVERVIEW:
            BY = 1;
            GAMESTART = false;
            DEVIDE = false;
            break;
        }
        InvalidateRgn(hwnd, NULL, TRUE);
        break;
    case WM_PAINT:
        hdc = BeginPaint(hwnd, &ps);
        mem1dc = CreateCompatibleDC(hdc);
        oldBit = (HBITMAP)SelectObject(mem1dc, hBit);
        if (!GAMESTART)
        {
            switch (BY)
            {
            case 3:
                pos[0][0].ImageX = 0; pos[0][1].ImageX = 2; pos[0][2].ImageX = 1;
                pos[0][0].ImageY = 1; pos[0][1].ImageY = 0; pos[0][2].ImageY = 1;
 
                pos[1][0].ImageX = 1; pos[1][1].ImageX = 0; pos[1][2].ImageX = 2;
                pos[1][0].ImageY = 0; pos[1][1].ImageY = 2; pos[1][2].ImageY = 1;
 
                pos[2][0].ImageX = 2; pos[2][1].ImageX = 1; pos[2][2].ImageX = 0;
                pos[2][0].ImageY = 2; pos[2][1].ImageY = 2; pos[2][2].ImageY = 0;
                break;
            case 4:
                pos[0][0].ImageX = 2; pos[0][1].ImageX = 0; pos[0][2].ImageX = 2; pos[0][3].ImageX = 1;
                pos[0][0].ImageY = 1; pos[0][1].ImageY = 0; pos[0][2].ImageY = 3; pos[0][3].ImageY = 0;
 
                pos[1][0].ImageX = 3; pos[1][1].ImageX = 1; pos[1][2].ImageX = 3; pos[1][3].ImageX = 2;
                pos[1][0].ImageY = 0; pos[1][1].ImageY = 1; pos[1][2].ImageY = 2; pos[1][3].ImageY = 2;
 
                pos[2][0].ImageX = 0; pos[2][1].ImageX = 2; pos[2][2].ImageX = 1; pos[2][3].ImageX = 0;
                pos[2][0].ImageY = 1; pos[2][1].ImageY = 0; pos[2][2].ImageY = 2; pos[2][3].ImageY = 3;
 
                pos[3][0].ImageX = 3; pos[3][1].ImageX = 3; pos[3][2].ImageX = 0; pos[3][3].ImageX = 1;
                pos[3][0].ImageY = 3; pos[3][1].ImageY = 1; pos[3][2].ImageY = 2; pos[3][3].ImageY = 3;
                break;
            case 5:
                pos[0][0].ImageX = 3; pos[0][1].ImageX = 4; pos[0][2].ImageX = 3; pos[0][3].ImageX = 1; pos[0][4].ImageX = 2;
                pos[0][0].ImageY = 0; pos[0][1].ImageY = 4; pos[0][2].ImageY = 2; pos[0][3].ImageY = 1; pos[0][4].ImageY = 4;
 
                pos[1][0].ImageX = 1; pos[1][1].ImageX = 0; pos[1][2].ImageX = 2; pos[1][3].ImageX = 4; pos[1][4].ImageX = 0;
                pos[1][0].ImageY = 2; pos[1][1].ImageY = 1; pos[1][2].ImageY = 1; pos[1][3].ImageY = 0; pos[1][4].ImageY = 2;
 
                pos[2][0].ImageX = 2; pos[2][1].ImageX = 1; pos[2][2].ImageX = 3; pos[2][3].ImageX = 4; pos[2][4].ImageX = 3;
                pos[2][0].ImageY = 0; pos[2][1].ImageY = 0; pos[2][2].ImageY = 4; pos[2][3].ImageY = 3; pos[2][4].ImageY = 3;
 
                pos[3][0].ImageX = 3; pos[3][1].ImageX = 1; pos[3][2].ImageX = 0; pos[3][3].ImageX = 1; pos[3][4].ImageX = 0;
                pos[3][0].ImageY = 1; pos[3][1].ImageY = 4; pos[3][2].ImageY = 0; pos[3][3].ImageY = 3; pos[3][4].ImageY = 3;
 
                pos[4][0].ImageX = 0; pos[4][1].ImageX = 2; pos[4][2].ImageX = 4; pos[4][3].ImageX = 2; pos[4][4].ImageX = 4;
                pos[4][0].ImageY = 4; pos[4][1].ImageY = 2; pos[4][2].ImageY = 2; pos[4][3].ImageY = 3; pos[4][4].ImageY = 1;
                break;
            }
        }
        if (!DEVIDE)
        {
            BitBlt(hdc, 0, 0, 819, 614, mem1dc, 0, 0, SRCCOPY);
            DEVIDE = true;
        }
        else
        {
            for (int i = 0; i < BY; i++)
            {
                for (int j = 0; j < BY; j++)
                {
                    if (GAMESTART&&i == stdX && j == stdY) continue;
                    BitBlt(hdc, i * (819.0f / BY), j* (614.0f / BY), 819.0f / BY, 614.0f / BY, mem1dc, (819.0f / BY)*pos[i][j].ImageX, (614.0f / BY)*pos[i][j].ImageY, SRCCOPY);
                }
            }
        }
 
        SelectObject(mem1dc, hBit);
        DeleteDC(mem1dc);
        EndPaint(hwnd, &ps);
        break;
    case WM_DESTROY:
        DeleteObject(hBit);
        PostQuitMessage(0);
        break;
 
    }
    return DefWindowProc(hwnd, iMsg, wParam, lParam);
}