Multitouch pad for Win32 application on Windows 7

I am developing an Win32 application (Windows 7) that uses a multitouch input. I tried several multitouch pads working on Windows, such as MSI starpad and Macbook pro built-in touchpad (booted in Window 7 using Bootcamp), but none of them generate Windows multitouch or gesture event. Does anyone know how these touchpad drivers send multi开发者_如何转开发touch signals to win32 applications?

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The touch capability is either reported by firmware via Microsoft's HID driver or by a custom HID driver.

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According to this page:

MultiTouch Capabilities in Windows 7

You need to handle the messages WM_TOUCH and WM_GESTURE in a windows procedure.