Помогите новичку

Подскажите в чем ошибка?
Пытаюсь запустить пример из хэлпа к C++ Builder 5:

//---------------------------------------------------------------------------

#include <windows.h>
#pragma hdrstop

//---------------------------------------------------------------------------

#pragma argsused
HINSTANCE hinst;
HWND hwndMain;

int PASCAL WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpszCmdLine, int nCmdShow)
{
MSG msg;
WNDCLASS wc;
UNREFERENCED_PARAMETER(lpszCmdLine);

// Register the window class for the main window.

if (!hPrevInstance)
{
wc.style = 0;
// wc.lpfnWndProc = (WNDPROC) WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;

wc.hIcon = LoadIcon((HINSTANCE) NULL,
IDI_APPLICATION);
wc.hCursor = LoadCursor((HINSTANCE) NULL,
IDC_ARROW);
wc.hbrBackground = GetStockObject(WHITE_BRUSH);
wc.lpszMenuName = "MainMenu";
wc.lpszClassName = "MainWndClass";

if (!RegisterClass(&wc))
return FALSE;
}

hinst = hInstance; // save instance handle

// Create the main window.

hwndMain = CreateWindow("MainWndClass", "Sample",

WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, (HWND) NULL,
(HMENU) NULL, hinst, (LPVOID) NULL);

// If the main window cannot be created, terminate
// the application.

if (!hwndMain)
return FALSE;

// Show the window and paint its contents.

ShowWindow(hwndMain, nCmdShow);
UpdateWindow(hwndMain);

// Start the message loop.

while (GetMessage(&msg, (HWND) NULL, 0, 0))

{
TranslateMessage(&msg);
DispatchMessage(&msg);
}

// Return the exit code to Windows.

return msg.wParam;
}
//HWND hwndMain;
HWND hwndDlgModeless = NULL;
MSG msg;
HACCEL haccel;
//
// Perform initialization and create a main window.
//
while(GetMessage(&msg, (HWND) NULL, 0, 0))
{
if (hwndDlgModeless == (HWND) NULL ||
!IsDialogMessage(hwndDlgModeless, &msg) &&
!TranslateAccelerator(hwndMain, haccel,
&msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}



Компилятор на строке while(GetMessage(&msg, (HWND) NULL, 0, 0)) выдает ошибку
"[C++ Error] Unit1.cpp(82): E2040 Declaration terminated incorrectly"
В чем причина?