Day 005 - WNDCLASS Errors | Handmade Network

Whenever I try to use the following line from Casey's code I get multiple compile errors:

1	WNDCLASS WindowClass = {};

When defining:

1	WindowClass.lpszClassName = "GameWindowClass";

the compiler complains about type of the string not being wide unless prefixed with L. RegisterClassA(&WindowClass) is also refused due to type incompatibility with WNDCLASS.
Redefining WNDCLASS as WNDCLASSA allows it to compile but the window title is using Chinese characters?

WNDCLASS WindowClass = {}; // OR WNDCLASSA

WindowClass.style = CS_HREDRAW|CS_VREDRAW|CS_OWNDC;
WindowClass.lpfnWndProc = Win32MainWindowCallback;
WindowClass.hInstance = Instance;
//WindowClass.hIcon;
WindowClass.lpszClassName = "GameWindowClass";

if(RegisterClassA(&WindowClass))
{
	HWND Window =
		CreateWindowExA(
			0,
			WindowClass.lpszClassName,
			"Game",
			WS_OVERLAPPEDWINDOW|WS_VISIBLE,
			CW_USEDEFAULT,
			CW_USEDEFAULT,
			CW_USEDEFAULT,
			CW_USEDEFAULT,
			0,
			0,
			Instance,
			0);
}