#include <windows.h>

#define dszClaaName            "TestClass"
#define dszTitleName           "Test Win32 Application Program"

HINSTANCE g_hInst;

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);


int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrvInst, LPSTR lpCmdLine, int nCmdShow)
{
    HWND hWnd;
    MSG Msg;
    WNDCLASS wc;

    g_hInst = hInst;

    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wc.hInstance = hInst;
    wc.lpfnWndProc = WndProc;
    wc.lpszClassName = dszClassName;
    wc.lpszMenuName = NULL;
    wc.style = CS_HREDRAW | CS_VREDRAW;
    RegisterClass(&wc);

    //
    // 윈도우를 생성

    hWnd = CreateWindow(dszClassName, dszTitleName, WS_OVERLAPPEDWINDOW,
            CW_USEDEFAULT, 0, CW_USEDEFAULT, 0,
            NULL, (HMENU)NULL, hInst, NULL);
    ShowWindow(hWnd, nCmdShow);

    //
    // 윈도우 메시지 루프

    while(GetMessage(&Msg, NULL, 0, 0))
    {
        TranslateMessage(&Msg);
        DispatchMessage(&Msg);
    }

    Msg.wParam;
}



LRESULT CALLBACK WndProc(HWND hWnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
    PAINTSTRUCT ps;

    switch(iMsg)
    {
    case WM_CREATE:
        return 0;

    case WM_PAINT:
        BeginPaint(hWnd, &ps);

        // 화면에 무언가를 그리는 루틴을 이곳에 추가한다

        EndPaint(hWnd, &ps);
        return 0;

    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
    }

    return DefWindowProc(hWnd, iMsg, wParam, lParam);
}