WinAPI program nie wylacza sie do konca.

#include <windows.h>
#include <commctrl.h>

HWND hEdit, hWnd;



INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR nStart, INT nShow )
{
   
    WNDCLASSEX wc;
   
    wc.hInstance = hInst;
    wc.lpszClassName = "Klasa";
    wc.style = CS_DBLCLKS;
    wc.lpfnWndProc = DefWindowProc;
    wc.cbSize = sizeof( WNDCLASSEX );
    wc.hIcon = LoadIcon( 0, IDI_APPLICATION );
    wc.hIconSm = LoadIcon( 0, IDI_APPLICATION );
    wc.hCursor = LoadCursor( 0, IDC_ARROW );
    wc.lpszMenuName = 0;
    wc.hbrBackground =( HBRUSH ) GetStockObject( WHITE_BRUSH );
    wc.cbWndExtra = 0;
    wc.cbClsExtra = 0;
    if( RegisterClassEx( & wc ) == 0 ) return 0;
   
    HWND okno = CreateWindowEx( 0, "Klasa", "Fema", WS_OVERLAPPEDWINDOW, 300, 300, 570, 300, 0, 0, hInst, 0 );
    ShowWindow( okno, 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_PAINT:
        break;
    case WM_CLOSE:
        PostQuitMessage( 0 );
       
        break;
        default:
        return DefWindowProc( hwnd, msg, wPar, lPar );
    }
    return 0;
}