how to send commands to a usb fingerprint reader connected to my system from qt app.

[prasad1001]

Hello qt Experts,

I an a beginner in Qt. And I am developing an simple qt app. to control a usb fingerprint reader.
My problem is, how to send a command to that particular usb port where the module is connected and how to detect the module is connected to particular usb.
Can u please provide me some sample code for this...

Thanks in advance...

[anda_skoa]

That doesn't sound related to Qt at all.

Cheers,
_

[ChrisW67]

http://www.libusb.org

[prasad1001]

Thanks for the reply sir...
i was installed the libusb library in my ubuntu...

sudo apt-get install libusb-dev

Now when i include it to my program like..
#include <libusb.h>

It doesn't finding it and giving an error like...
mainwindow.cpp:11: error: libusb.h: No such file or directory

How to include the library to my Qt creator.
Thanks in advance

[anda_skoa]

Check which directory the header got installed to.
Then add that directory in your .pro file to the INCLUDEPATH variable.

You probably have to do something similar for the linker.

Or you add everything using the pkg-config mechanism: http://qt-project.org/faq/answer/doe...for_pkg-config

Cheers,
_

[zohaa3492]

Well, how do you currently achieve the base visualization?