Programable way to determine the current double-tap speed setting in Windows 7

I'm implementing a touch interface for Windows in Win32 (C++). I would like to find out the current double-tap (not double-click) speed that Windows is s开发者_StackOverflow社区et to. I know Windows is set to accept double-taps as various messages (depending on whether you're using gestures or not), but I'm looking at doing something a bit more advanced. I'm thus handling WM_TOUCH messages. I'm hoping there's a better (i.e. future-proof) way than rummaging through the registry to find that setting. MSDN wasn't helpful.

Since there doesn't seem to be a specific double-touch notification, I suspect the application is expected to decided for itself if a WM_TOUCH is part of a double tap. The most common way to do that is probably to check the timing between touches. By default, I'd imagine that most apps use the mouse double-click setting as the default.

GetDoubleClickTime