Is there any way to get the location that touch pad is touched? also I need capture module that is able to return such 2D points array map that reports states of touchpad points (state means: is point touched/not touched) by request. No matter on what technology/language it is written
I know this isn't what you want to hear, but there is no all-inclusive way to do what you want.
Individual makes and models have their own way of exposing it. For example, I've done some work with Synaptic touchpads (fairly common) which expose a COM interface on Windows. That code won't work on any other touchpads.
You could find a few common ones and run different code based on which ones the system supports.
If its a windows app, handle the WM_MOUSEMOVE message , the hiword and loword of the lparam is the x and y coordinates respectively , in reference to client area coordinates.
来源：https://stackoverflow.com/questions/8377090/get-finger-position-on-touchpad