WinAPI

#include <windows.h>
#include <string>
#include <sstream>
#include <windowsx.h>
#include <iostream>

using namespace::std;

LPSTR NazwaKlasy = "Klasa Okienka";
MSG Komunikat;
HWND g_hPrzycisk;
HWND g_hPrzycisk1;
HWND g_hPrzycisk3;
HWND hText0;
HWND hText1;
HWND hText2;
HWND hText3;
HWND hText4;
HWND hText5;
HWND hText6;
HWND hStatic0;
HWND hStatic1;
HWND hStatic2;
HWND hStatic3;
HWND hStatic4;
HWND hStatic5;
HWND hCombo1;
HWND hCombo2;
HWND hCombo3;
HWND hCombo4;
HWND hCheckBox;
HWND hButton1;
HWND hButton2;
HWND wParam;
HWND g_hRamka;
#define ID_BUTTON 500
#define ID_BUTTON1 501

LRESULT CALLBACK WndProc( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam );

int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow )
{

    // WYPEŁNIANIE STRUKTURY
    WNDCLASSEX wc;

    wc.cbSize = sizeof( WNDCLASSEX );
    wc.style = 0;
    wc.lpfnWndProc = WndProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = hInstance;
    wc.hIcon = LoadIcon( NULL, IDI_APPLICATION );
    wc.hCursor = LoadCursor( NULL, IDC_ARROW );
    wc.hbrBackground =( HBRUSH )( COLOR_WINDOW + 1 );
    wc.lpszMenuName = NULL;
    wc.lpszClassName = NazwaKlasy;
    wc.hIconSm = LoadIcon( NULL, IDI_APPLICATION );



    // REJESTROWANIE KLASY OKNA
    if( !RegisterClassEx( & wc ) )
    {
        MessageBox( NULL, "ALERT!", "ODMOWA REJESTRACJI",
        MB_ICONEXCLAMATION | MB_OK );
        return 1;
    }

    // TWORZENIE OKNA
    HWND hwnd;

    hwnd = CreateWindowEx( WS_EX_CLIENTEDGE, NazwaKlasy, "Kalkulator Body Mass Index", WS_OVERLAPPEDWINDOW | WS_HSCROLL | WS_VSCROLL,
    CW_USEDEFAULT, CW_USEDEFAULT, 620, 300, NULL, NULL, hInstance, NULL); //szerokość, wysokość

 /* if( hwnd == NULL )
    {
        MessageBox( NULL, "Okno odmówiło przyjścia na świat!", "Ale kicha...", MB_ICONEXCLAMATION );
        return 1;
    }*/

    HWND hStatic0 = CreateWindowEx( 0, "STATIC", NULL, WS_CHILD | WS_VISIBLE |
    SS_LEFT, 30, 20, 130, 20, hwnd, NULL, hInstance, NULL );

        SetWindowText( hStatic0, "Wybierz plec" );

        hButton1 = CreateWindowEx( 0, "BUTTON", "Kobieta", WS_CHILD | WS_VISIBLE | WS_BORDER | BS_RADIOBUTTON,
        170, 20, 75, 20, hwnd,( HMENU ) ID_BUTTON, hInstance, NULL );

        hButton2 = CreateWindowEx( 0, "BUTTON", "Mezczyzna", WS_CHILD | WS_VISIBLE | WS_BORDER | BS_RADIOBUTTON,
        250, 20, 100, 20, hwnd,( HMENU ) ID_BUTTON1, hInstance, NULL );


        /*HWND hButton1 = CreateWindowEx( NULL, "BUTTON", "Pierwszy", WS_CHILD | WS_VISIBLE |
        WS_BORDER, 170, 20, 75, 20, hwnd,( HMENU ) ID_PRZYCISK, hInstance, NULL ),
        hButton2 = CreateWindowEx( NULL, "BUTTON", "Drugi", WS_CHILD | WS_VISIBLE |
        WS_BORDER, 250, 20, 100, 20, hwnd,( HMENU ) ID_PRZYCISK1, hInstance, NULL );*/

    HWND hStatic = CreateWindowEx( 0, "STATIC", NULL, WS_CHILD | WS_VISIBLE |
    SS_LEFT, 30, 50, 130, 20, hwnd, NULL, hInstance, NULL );

        SetWindowText( hStatic, "Podaj wiek" );

        HWND hText = CreateWindowEx( WS_EX_CLIENTEDGE, "EDIT", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER,
        170, 50, 162, 20, hwnd, NULL, hInstance, NULL );
        DWORD dlugosc = GetWindowTextLength( hText );
        LPSTR Bufor =( LPSTR ) GlobalAlloc( GPTR, dlugosc + 1 );
        GetWindowText( hText, Bufor, dlugosc + 1 );


    HWND hStatic1 = CreateWindowEx( 0, "STATIC", NULL, WS_CHILD | WS_VISIBLE |
    SS_LEFT, 30, 75, 130, 20, hwnd, NULL, hInstance, NULL );

        SetWindowText( hStatic1, "Podaj wzrost [cm]" );

        hText1 = CreateWindowEx( WS_EX_CLIENTEDGE, "EDIT", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER,
        170, 75, 162, 20, hwnd, NULL, hInstance, NULL );

    HWND hStatic2 = CreateWindowEx( 0, "STATIC", NULL, WS_CHILD | WS_VISIBLE |
    SS_LEFT, 30, 100, 130, 18, hwnd, NULL, hInstance, NULL );

        SetWindowText( hStatic2, "Podaj wage [kg]" );

        hText2 = CreateWindowEx( WS_EX_CLIENTEDGE, "EDIT", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER,
        170, 100, 162, 20, hwnd, NULL, hInstance, NULL );

    HWND hStatic3 = CreateWindowEx( 0, "STATIC", NULL, WS_CHILD | WS_VISIBLE |
    SS_LEFT, 30, 130, 130, 20, hwnd, NULL, hInstance, NULL );   // czwarta liczba - wysokość tła, druga liczba to odległość od góry

        SetWindowText( hStatic3, "Aktywnosc fizyczna" );

        HWND hCombo2 = CreateWindowEx( WS_EX_CLIENTEDGE, "COMBOBOX", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER |
        CBS_DROPDOWNLIST, 170, 128, 162, 200, hwnd, NULL, hInstance, NULL );

        SendMessage( hCombo2, CB_ADDSTRING, 0,( LPARAM ) "Brak" );

        SendMessage( hCombo2, CB_ADDSTRING, 0,( LPARAM ) "Mala (1-2 w tygodniu)" );

        SendMessage( hCombo2, CB_ADDSTRING, 0,( LPARAM ) "Srednia (3-4 w tygodniu)" );

        SendMessage( hCombo2, CB_ADDSTRING, 0,( LPARAM ) "Duza (4-5 w tygodniu)" );


    HWND hStatic4 = CreateWindowEx( 0, "STATIC", NULL, WS_CHILD | WS_VISIBLE |
    SS_LEFT, 30, 162, 130, 20, hwnd, NULL, hInstance, NULL );

        SetWindowText( hStatic4, "Rodzaj pracy" );

        HWND hCombo4 = CreateWindowEx( WS_EX_CLIENTEDGE, "COMBOBOX", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER |
        CBS_DROPDOWNLIST, 170, 160, 162, 200, hwnd, NULL, hInstance, NULL );

        SendMessage( hCombo4, CB_ADDSTRING, 0,( LPARAM ) "Siedzaca" );

        SendMessage( hCombo4, CB_ADDSTRING, 0,( LPARAM ) "Fizyczna" );

    HWND hStatic5 = CreateWindowEx( 0, "STATIC", NULL, WS_CHILD | WS_VISIBLE |
    SS_LEFT, 360, 20, 210, 170, hwnd, NULL, hInstance, NULL ); //od prawej, od góry, szerokość tekstu, wysokość tekstu

    SetWindowText( hStatic5, "Zakresy wartości BMI: \n < 16 - wygłodzenie \n 16 - 16.99 - wychudzenie \n 17 - 18.49 - niedowaga \n 18.5 - 24.99 - wartość prawidłowa \n 25 - 29.99 - nadwaga \n 30 - 34.99 - I stopień otyłości \n 35 - 39.99 - II stopień otyłości \n > 40 - otyłość skrajna") ;

    /*g_hRamka= CreateWindowEx(0, "RAMKA", "RAMKA", WS_CHILD | WS_VISIBLE | BS_GROUPBOX | WM_CTLCOLORSTATIC,
    170, 200, 100, 100, hwnd, NULL, hInstance, NULL );*/


    g_hPrzycisk3 = CreateWindowEx( 0, "BUTTON", "OBLICZ BMI", WS_CHILD | WS_VISIBLE, //visible - guzik jest widoczny
    170, 200, 162, 30, hwnd, NULL, hInstance, NULL ); //hwnd - uchwyt do okna głównego


    ShowWindow( hwnd, nCmdShow ); // Pokaż okienko...
    UpdateWindow( hwnd );

    // Pętla komunikatów
    while( GetMessage( & Komunikat, NULL, 0, 0 ) )
    {
        TranslateMessage( & Komunikat );
        DispatchMessage( & Komunikat );
    }
    return Komunikat.wParam;
}


// OBSŁUGA ZDARZEŃ
LRESULT CALLBACK WndProc( HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam )
{

    switch( msg )
    {
    case WM_COMMAND:
         if((HWND ) lParam == g_hPrzycisk3)
        {

        DWORD dlugosc = GetWindowTextLength( hText0 );
        dlugosc = GetWindowTextLength( hText1 );
        dlugosc = GetWindowTextLength( hText2 );
        LPSTR BuforWiek = ( LPSTR ) GlobalAlloc( GPTR, dlugosc + 1 );
        LPSTR BuforWzrost = ( LPSTR ) GlobalAlloc( GPTR, dlugosc + 1 );
        LPSTR BuforWaga = ( LPSTR ) GlobalAlloc( GPTR, dlugosc + 1 );
        GetWindowText( hText0, BuforWiek, dlugosc + 1 );
        GetWindowText( hText1, BuforWzrost, dlugosc + 1 );
        GetWindowText( hText2, BuforWaga, dlugosc + 1 );


        FLOAT Waga;
        FLOAT Wzrost;
        FLOAT Wiek;

        Wiek = atoi( BuforWiek);
        Waga = atoi( BuforWaga);
        Wzrost = atoi( BuforWzrost);

        std::ostringstream s;

        s << (Waga/((Wzrost*Wzrost)/100));
        LPCSTR wynik = s.str().c_str();
        MessageBox( hwnd, wynik, "BMI Kalkulator", MB_ICONINFORMATION );
        }

        break;

    case WM_CLOSE:
        DestroyWindow( hwnd );
        break;

    case WM_DESTROY:
        PostQuitMessage( 0 );
        break;

        default:
        return DefWindowProc( hwnd, msg, wParam, lParam );
    }

    return 0;
}