WYKRESY POZIOME

#include <Windows.h>
#include <stdlib.h>
#include <time.h>
#include <vector>

using std::vector;

HINSTANCE hInst;

TCHAR ClassName[] = TEXT("Nazwa klasy");
TCHAR AppName[] = TEXT("Nazwa aplikacji");

POINT ekran = {800, 600};
const COLORREF kolory[] = {RGB(255, 0, 0), RGB(200, 0, 0), RGB(150, 0,0)};

HBRUSH Pedzel;
struct Wykres
{
    long int a,b;
}wykres;

vector<Wykres> dane;
long int max = 0;
unsigned int margines = 50, podzialka_x=0, podzialka_y=0, ilepodzialek_x = 5;
wchar_t bufor[100];
int k=0;

LRESULT CALLBACK WndProc(HWND Okno, UINT Kom, WPARAM wParam, LPARAM lParam)
{
    switch(Kom)
    {
    case WM_CREATE:
        srand(time(NULL));
        break;
    case WM_PAINT:

        HDC Kontekst;
        PAINTSTRUCT PS;

        RECT R;

        GetClientRect(Okno,&R);

        Kontekst = BeginPaint(Okno,&PS);

        SetMapMode(Kontekst,MM_ANISOTROPIC);
        SetWindowExtEx(Kontekst,ekran.x,ekran.y,NULL);
        SetViewportExtEx(Kontekst,R.right,-R.bottom,NULL);
        SetViewportOrgEx(Kontekst,0,R.bottom,NULL);

        SaveDC(Kontekst);

        podzialka_x = (ekran.x - 2*margines) / (max/1000); //zbyt duze liczby
        podzialka_y = (ekran.y - margines) / dane.size();

        Pedzel = CreateSolidBrush(RGB(0,230,0));
        SelectObject(Kontekst,Pedzel);

        for(unsigned int i=0;i<dane.size();++i)
        {
            for(unsigned int j=0;j<ilepodzialek_x;++j)
            {
                Rectangle(Kontekst,margines+j*(ekran.x-2*margines)/5,margines+podzialka_y*i+podzialka_y,margines+j*(ekran.x-2*margines)/5+(ekran.x-2*margines)/5,margines+podzialka_y*i);
            }
        }

        RestoreDC(Kontekst,-1);
        DeleteObject(Pedzel);


        for(unsigned int i=0;i<dane.size();++i)
        {
            Pedzel = CreateSolidBrush(kolory[dane[i].b]);
            SelectObject(Kontekst,Pedzel);
            swprintf(bufor,L"%d",i+1);
            TextOut(Kontekst,0,i*podzialka_y+podzialka_y+margines,bufor,wcslen(bufor));
            Rectangle(Kontekst,margines,i*podzialka_y+podzialka_y+margines,(dane[i].a/1000)*podzialka_x+margines,i*podzialka_y+margines);
            RestoreDC(Kontekst,-1);
            DeleteObject(Pedzel);
        }


        for(unsigned int i=0;i<ilepodzialek_x;++i)
        {
            swprintf(bufor,L"%d",max/5*(i+1));
            TextOut(Kontekst,(ekran.x-margines)/5*(i+1),margines,bufor,wcslen(bufor));
        }

        DeleteDC(Kontekst);
        EndPaint(Okno,&PS);
        break;
    case WM_LBUTTONDOWN:
        long int tmp;
        tmp = 1000+rand() % 100000-999;
        if(max < tmp) max = tmp;
        if (k>2) k=0;
        wykres.a=tmp;
        wykres.b=k;
        dane.push_back(wykres);
        k++;
        InvalidateRect(Okno,NULL,true);
        break;
    case WM_DESTROY:
        dane.clear();
        PostQuitMessage(0);
    default:
        return DefWindowProc(Okno,Kom,wParam,lParam);
    }
    return 0;
}

WNDCLASSEX RejestrujKlase()
{
    WNDCLASSEX wc;
    wc.cbClsExtra = 0;
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.cbWndExtra = 0;
    wc.hbrBackground = (HBRUSH) (COLOR_WINDOW+1);
    wc.hCursor = 0;
    wc.hIcon = 0;
    wc.hIconSm = 0;
    wc.hInstance = hInst;
    wc.lpfnWndProc = WndProc;
    wc.lpszClassName = ClassName;
    wc.lpszMenuName = 0;
    wc.style = CS_HREDRAW | CS_VREDRAW;
    return wc;
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    hInstance = hInst;
    WNDCLASSEX wc = RejestrujKlase();
    if(!RegisterClassEx(&wc))
    {
        MessageBox(NULL,L"Nie udalo sie zarejestrowac klasy okna",L"Blad",NULL);
        return 1;
    }

    HWND Okno = CreateWindowEx(NULL,ClassName,AppName,WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,ekran.x,ekran.y,0,0,hInstance,0);

    if(!Okno)
    {
        MessageBox(NULL,L"Nie udalo sie stworzyc uchwytu okna",L"Blad",NULL);
        return 2;
    }

    UpdateWindow(Okno);
    ShowWindow(Okno,nCmdShow);

    MSG Kom;

    while(GetMessage(&Kom,0,0,0) > 0)
    {
        TranslateMessage(&Kom);
        DispatchMessage(&Kom);
    }

    return Kom.wParam;
}