vb 2008 click on specific window with coords

i'm using Visual Basic 2008, and my question is following: Is here a way to make vb2008 app click on specific windo开发者_如何学Cw with coordinates? for example i want to click on my notepad window ( for example on next coords: 20;150 )

thanks

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You can call the SendInput API function, using this managed wrapper.