Thread: First Windows Application Error

I'm having problems compiling the code that was given in the OpenGl/windows tutorial section.

Here is my code:

Code:

#define WIN32_LEAN_AND_MEAN	
#pragma comment(linker, "/subsystem:windows")
#include <windows.h>
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	PAINTSTRUCT paintStruct;
	HDC hDC; 
	char string[] = "Hello, World!"; 
	switch(message)
	{
		case WM_CREATE: 
			return 0;
			break;
		case WM_CLOSE: 
			PostQuitMessage(0);
			return 0;
			break;
		case WM_PAINT: 
			hDC = BeginPaint(hwnd,&paintStruct);
			SetTextColor(hDC, COLORREF(0x00FF0000));
			TextOut(hDC,150,150,string,sizeof(string)-1);
			EndPaint(hwnd, &paintStruct);
			return 0;
			break;
		default:
			break;
	}
	return (DefWindowProc(hwnd,message,wParam,lParam));
}
int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
	WNDCLASSEX  windowClass;		
	HWND		hwnd;				
	MSG			msg;				
	bool		done;				
	
    windowClass.cbSize = sizeof(WNDCLASSEX);
	windowClass.style = CS_HREDRAW | CS_VREDRAW;
	windowClass.lpfnWndProc = WndProc;
	windowClass.cbClsExtra = 0;
	windowClass.cbWndExtra = 0;
	windowClass.hInstance = hInstance;
	windowClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
	windowClass.hCursor = LoadCursor(NULL, IDC_ARROW);
	windowClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	windowClass.lpszMenuName = NULL;
	windowClass.lpszClassName = "MyClass";
	windowClass.hIconSm = LoadIcon(NULL, IDI_WINLOGO);
	
	if (!RegisterClassEx(&windowClass))
	{
		return 0;
	}
	
	hwnd = CreateWindowEx(NULL,		
		"MyClass",			
		"A Real Win App",		
		WS_OVERLAPPEDWINDOW |		
		WS_VISIBLE |
		WS_SYSMENU,
		100,100,			
		400,400,			
		NULL,				
		NULL,				
		hInstance,			
                                NULL);				
	
	if (!hwnd)
		return 0;
	done = false; 
	
	while(!done)
	{
		PeekMessage(&msg,hwnd,NULL,NULL,PM_REMOVE);
		if (msg.message == WM_QUIT) 
		{
			done = true; 
		}
		else
		{
			
			TranslateMessage(&msg); 
			DispatchMessage(&msg);
		}
	}
	return msg.wParam;
}

The error comes in this specific section with the last "NULL);"

Code:

	hwnd = CreateWindowEx(NULL,		
		"MyClass",			
		"A Real Win App",		
		WS_OVERLAPPEDWINDOW |		
		WS_VISIBLE |
		WS_SYSMENU,
		100,100,			
		400,400,			
		NULL,				
		NULL,				
		hInstance,			
                                NULL);

Is there something wrong with my compiler or my code? Any help would be much appreciated as I am relatively new to all this and I'm trying to see exactly how the program runs and all works (and that's becoming difficult sense it won't work!)