#include <windows.h>

LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch (msg)
    {
    case WM_CREATE:
        break;
    case WM_CLOSE:
        DestroyWindow(hWnd);
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    }

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

INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow)
{
    WNDCLASSEX wcex;
    wcex.cbClsExtra = 0;
    wcex.cbSize = sizeof(wcex);
    wcex.cbWndExtra = 0;
    wcex.hbrBackground = (HBRUSH)COLOR_WINDOW;
    wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
    wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wcex.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
    wcex.hInstance = hInstance;
    wcex.lpfnWndProc = WndProc;
    wcex.lpszClassName = "MyForm";
    wcex.lpszMenuName = NULL;
    wcex.style = 0;

    if (!RegisterClassEx(&wcex))
    {
        MessageBox(NULL, "RegisterClassEx() failed !", "ERROR", MB_ICONINFORMATION | MB_OK);
        return 1;
    }

    HWND hForm = CreateWindowEx(WS_EX_WINDOWEDGE, wcex.lpszClassName, "IMG", WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX, CW_USEDEFAULT, CW_USEDEFAULT, 600, 500, NULL, NULL, hInstance, NULL);

    if (!hForm)
    {
        MessageBox(NULL, "CreateWindowEx() failed !", "ERROR", MB_ICONINFORMATION | MB_OK);
        return 1;
    }

    ShowWindow(hForm, nCmdShow);
    UpdateWindow(hForm);

    MSG msg{ 0 };

    while (GetMessage(&msg, hForm, NULL, NULL) > NULL)
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return msg.wParam;
}