[핵심 API로 배우는 윈도우프로그래밍(강경우, 한빛아카데미)] 5장 11번 풀이

#include <Windows.h>
#include<tchar.h>
#include<string.h>
#include<math.h>
#include"resource.h"
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;
    HACCEL hAcc;
    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 = NULL;
    WndClass.lpszClassName = _T("Window Class Name");
 
    RegisterClass(&WndClass);
 
    hwnd = CreateWindow(
        _T("Window Class Name"),
        _T("홍길동의 첫 번째 윈도우"),
        WS_OVERLAPPEDWINDOW,
        100,
        100,
        1000,
        1000,
        NULL,
        NULL,
        hInstance,
        NULL);
 
    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);
 
    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return (int)msg.wParam;
}
void Animation(int xPos, int yPos, HDC hdc, HWND hwnd)
{
    HDC mem1dc, mem2dc;
    HBITMAP RunBit[10], Mask[10], hBit, old1Bit, old2Bit;
    static int count;
    int i;
 
    count++;
    count = count % 10;
    hBit = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_BITMAP5));                //배경로드
    for (i = 0; i < 10; i++)
        RunBit[i] = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_BITMAP8 + i));    //달리는이미지로드
    for (i = 0; i < 10; i++)
        Mask[i] = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_BITMAP18 + i));        //달리는마스크로드
    mem1dc = CreateCompatibleDC(hdc);
    mem2dc = CreateCompatibleDC(hdc);
 
    old2Bit = (HBITMAP)SelectObject(mem2dc, hBit);                //배경
    BitBlt(hdc, 0, 0, 819, 614, mem2dc, 0, 0, SRCCOPY);
 
    old1Bit = (HBITMAP)SelectObject(mem1dc, Mask[count]);        //마스크
    BitBlt(mem1dc, 0, 0, 180, 240, mem1dc, 0, 0, SRCAND);
 
    SelectObject(mem2dc, RunBit[count]);                        //원본
    BitBlt(mem1dc, 0, 0, 180, 240, mem2dc, 0, 0, SRCPAINT);
 
    BitBlt(hdc, xPos, 400, 180, 240, mem1dc, 0, 0, SRCAND);
    BitBlt(hdc, xPos, 400, 180, 240, mem2dc, 0, 0, SRCPAINT);
 
    SelectObject(mem1dc, old1Bit);
    SelectObject(mem2dc, old2Bit);
    for (i = 0; i < 10; i++)
        DeleteObject(Mask[i]);
    for (i = 0; i < 10; i++)
        DeleteObject(RunBit[i]);
    DeleteDC(mem1dc);
    DeleteDC(mem2dc);
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    PAINTSTRUCT ps;
    static int xPos;
    switch (iMsg)
    {
    case WM_CREATE:
        xPos = -10;
        SetTimer(hwnd, 1, 100, NULL);
        break;
    case WM_TIMER:
        xPos += 5;
        if (xPos > 819) xPos = -10;
        InvalidateRgn(hwnd, NULL, true);
        break;
    case WM_PAINT:
        hdc = BeginPaint(hwnd, &ps);
        Animation(xPos, 300, hdc, hwnd);
        EndPaint(hwnd, &ps);
        break;
    case WM_DESTROY:
        KillTimer(hwnd, 1);
        PostQuitMessage(0);
        break;
 
    }
    return DefWindowProc(hwnd, iMsg, wParam, lParam);
}