Windows API Translation

[Andrew Wiley]

I'm trying to use the Windows file change notification API from D, and
I'm having trouble translating Microsoft's macro-laden signatures into
D. I thought I had it figured out, but optlink says otherwise:
The original function is this:

HANDLE WINAPI FindFirstChangeNotification(
  __in  LPCTSTR lpPathName,
  __in  BOOL bWatchSubtree,
  __in  DWORD dwNotifyFilter
);

I translated it into:

extern(Windows) {
uint FindFirstChangeNotification(
	const(char)* lpPathName,
	bool bWatchSubtree,
	uint dwNotifyFilter
);
}

Optlink is giving me undefined symbol errors, but I can't seem to
figure out what I have wrong. Any help would be appreciated.