5sPP3Task2

#include <stdio.h>
#include <stdlib.h>

#define _WIN32_WINNT 0X0A00

#include <windows.h>
#include <corecrt_math.h>

void WinShow(HDC dc)
{
    double y;

    SelectObject(dc, GetStockObject(DC_BRUSH));
    SetDCBrushColor(dc, RGB(0, 0, 255));

    MoveToEx(dc, 20, 400, NULL);
    LineTo(dc, 760, 400);

    MoveToEx(dc, 100, 20, NULL);
    LineTo(dc, 100, 540);

    SetDCBrushColor(dc, RGB(255, 0, 0));

    for (double x = 0; x < 3.14; x += 0.005) {
        y = sin(x);
        SetPixel(dc, x * 200 + 100, 400 - y * 200, RGB(255, 0, 0));
    }
}


LRESULT WndProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)
{
    if (message == WM_DESTROY)
        PostQuitMessage(0);
    else return DefWindowProcA(hwnd, message, wparam, lparam);
}

int main()
{
    WNDCLASSA wcl;
    memset(&wcl, 0, sizeof(WNDCLASSA));
    wcl.lpszClassName = "my_Window";
    wcl.lpfnWndProc = WndProc;
    RegisterClassA(&wcl);

    HWND hwnd = CreateWindow(L"my_Window", L"Окошечко", WS_OVERLAPPEDWINDOW, 10, 10, 800, 600, NULL, NULL, NULL, NULL);

    HDC dc = GetDC(hwnd);
    ShowWindow(hwnd, SW_SHOWNORMAL);

    MSG msg;

    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
        WinShow(dc);
    }
    return 0;
}