Zasoby danych

#include<windows.h>
#include<commctrl.h>
#define Ikona 123

HWND hButton, hButton2, hButton3, hButton4, hButton5, hWnd;
CHAR szClassName[] = "OknoRodzica";
HINSTANCE * hInst;
int x = 250;

LRESULT CALLBACK WndProc( HWND, UINT, WPARAM, LPARAM );
INT WINAPI WinMain( HINSTANCE hInstance, HINSTANCE, LPSTR lStart, INT nShow ) {
    hInst = & hInstance;
    WNDCLASSEX wc;
    wc.hInstance = * hInst;
    wc.lpszClassName = szClassName;
    wc.lpfnWndProc = WndProc;
    wc.style = 0;
    wc.cbSize = sizeof( WNDCLASSEX );
    wc.hIcon = LoadIcon( 0, IDI_ERROR );
    wc.hIconSm = LoadIcon( 0, IDI_ERROR );
    wc.hCursor = LoadCursor( 0, IDC_ARROW );
    wc.lpszMenuName = 0;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hbrBackground =( HBRUSH ) COLOR_BACKGROUND;
    if( !RegisterClassEx( & wc ) ) return 0;
   
    hWnd = CreateWindowEx( 0, szClassName, "Tworzenie buttona", WS_OVERLAPPEDWINDOW | WS_VSCROLL, 0, 0, 1280, 640, 0, 0, * hInst, 0 );
    ShowWindow( hWnd, nShow );
    MSG msgs;
    while( GetMessage( & msgs, 0, 0, 0 ) ) {
        TranslateMessage( & msgs );
        DispatchMessage( & msgs );
    }
    return msgs.wParam;
}

LRESULT CALLBACK WndProc( HWND hwnd, UINT msg, WPARAM wpar, LPARAM lpar ) {
    switch( msg ) {
    case WM_CREATE:
        hButton = CreateWindowEx( 0, WC_BUTTON, "Przycisk", WS_CHILD | WS_VISIBLE, 30, 30, 100, 100, hwnd,( HMENU ) 1, * hInst, 0 );
        hButton2 = CreateWindowEx( 0, WC_BUTTON, "Tworzenie przycisku", WS_CHILD | WS_VISIBLE, 150, 150, 200, 100, hwnd,( HMENU ) 2, * hInst, 0 );
        hButton4 = CreateWindowEx( 0, WC_EDIT, "Tworzenie pola tekstowego", WS_CHILD | WS_VISIBLE | ES_MULTILINE | WS_BORDER | ES_AUTOVSCROLL, 1000, 150, 200, 100, hwnd,( HMENU ) 2, * hInst, 0 );
        hButton5 = CreateWindowEx( 0, szClassName, "Tworzenie buttona", WS_OVERLAPPEDWINDOW, 0, 0, 300, 640, 0, 0, * hInst, 0 );
        break;
    case WM_COMMAND:
        if( wpar == 1 ) MessageBox( hwnd, "Przycisk wcisniety", "Komunikat", MB_OK );
       
        if( wpar == 2 ) {
            int i;
            i = MessageBox( hwnd, "Chcesz nowy przycisk?", "Komunikat", MB_YESNO | MB_ICONQUESTION );
            if( i == 6 ) {
                hButton3 = CreateWindowEx( 0, WC_BUTTON, "Przycisk", WS_CHILD | WS_VISIBLE, x, x, 100, 100, hwnd,( HMENU ) 1, * hInst, 0 );
                x += 100;
            }
        }
        break;
    case WM_DESTROY:
       
        DestroyWindow( hButton );
        DestroyWindow( hButton2 );
        PostQuitMessage( 0 );
        break;
        default:
        return DefWindowProc( hwnd, msg, wpar, lpar );
    }
    return 0;
}