Hello

Forgive me if this question sounds dumb, but I dont have much experience in C++.

So I just recently aquired a windows 7 machine with a multitouch enabled screen, and just started using Visual studio for the first time.
I'm wondering how I could get multitouch, gesture messages from windows 7 working with an OpenFrameworks application? Any hints of how I could get started on this would be greatly appreciated

thanks

Hi,

I am currently looking into interfacing with off the shelf multitouch monitors as well.

I have found that most of the monitors out there HP, Dell etc are using Nextwindow technology (is is not really multitouch since it can only detect two touch points). You can download dll-files that give you access to their multitouch api:
http://www.nextwindow.com/nextwindow_support/api.html
There is a c++ example on the page - I haven't tried it myself yet, but I guess it should be relatively easy to use this in openframeworks.

Alternatively, someone has written a TUIO bridge - translating the touch events to TUIO events
http://nuigroup.com/forums/viewthread/4687/
This is quite a nice way of handling the touch events and makes it easy to run your apps on other TUIO hardware.

/lars

Yeah,

I just managed to get Windows 7 "native" Gesture support working in OpenFrameworks. (Haven't tested anything yet except the "Two finger Tap" & zooming
I guess it is more of a hack though than anything else. But than, I wouldn't consider myself a "real" or good programmer.
Anyways.

Changes:

ofConstants.h, line 42
from:


to

You have to do this, otherwise WM_GESTURE won't be available. Don't know if there are any sideEffects.

Next you have to extract the attached files into



They are taken from http://code.msdn.microsoft.com/WindowsTouch and modified.
I do not know about legal issues using this stuff though..

Next open up
ofAppGlutWindow.cpp and
add around line 4


as well as


below ofBaseApp * pfAppPtr (around Line 33)

next, you have to add a case statement below case WM_DESTROY:


The last change to this file is around line 225 (in runAppViaInfininteLoop)

add

below ofAppPtr = appPtr

next, you have to adjust ofBaseApp.h

just add

somewhere.
You can get the changed files hier


At last, you have to add

to your testApp.h and (as you all know, I guess)


That's it. -- Doesn't seem that difficult now. ^^
As I said, it is far from being done and ready, however I heard "post early, post often" is the way to go
What I especially like about this solution is, that it just blends into of seamlessly.
I wouldn't now how to make an ofx.. Extension out of it.

PS: Just tested on one machine,
HP TouchSmart IQ820 with 64Bit Windows 7. It should work in 32 Bit windows 7 as well. (Not earlier Version, as WM_GESTURE then)

http://img188.imageshack.us/img188/3227/zoomandtap.png

Hey guys thanks for the replies

Im currently using a sony Vaio L-series. Ill need to dig around and find our what drivers Im using. Ill let you know of any progress I make after I investigater these options

thanks!