How to get wm_pointer info

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Hello, I am try to obtain the stylus device input info via wm_pointer related message, and there are several ones.

I am getting puzzled of the interfaces while trying to get info. they are

GetPointerInfo

and

GetPointerFrameInfo

.

which one shall I use? can someone kindly give me some full explanation about usage?

What I have tried:

I have read the msdn and found that

GetPointerInfo

will get only one pointer info each time the wm message comes, while the

GetPointerFrameInfo

will get a set of them including none-client area. Both of them are mapped to one ID. this is totally different with touch event which always comes several ones with different ID in each.

Posted 28-Dec-16 19:30pm

Charly LEE

Updated 7-Apr-17 1:53am

OriginalGriff

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KarstenK · Answer 1 · 2017-04-07T01:53:00

Solution 1

The function GetPointerInfo is for information on one pointer, the second for multiple use in one call.

In the documentation of GetPointerFrameInfo is all explained.

You must call this function in the direct context (like message handler) of the message to get valid data.

Posted 7-Apr-17 1:53am

KarstenK