When you touch a screen it is the same as you click this spot with a mouse. Nothing special.
You have to connect the screen to a mouse port and run screen calibration program.
Thanks for the reply.
I am some more doubts regarding connecting the application developed in Flex and running in AIR with peripherals like barcode scanner and weighing scale.
Does flex have any in built module to connect to external peripherals?. Please advice
Jai Kishan Shah
No, as far as I know there are no such modules in the product.
If you work with keyboard wedges - scanners that are connected into a keyboard port then anything scanned goes into a field that is active on the screen. But if you need to work with serial scanners - these that are connected to comm ports or serial scales then that is a completely different story.
Bar Code Scanners are no different than keyboards in my experience. It just sends the text to whatever application is open. Integrating it with Flex requires no effort. You just have to be sure that Flex is the current application and the field you want to put the data in is given focus.
In a point of sale application with very specific use case and limited interface, it is easy to force the app to give focus to the input field that needs to accept your input.
Credit card swipers work the same way.
I don't know about a weighing scale, but I bet it is very similar. If not, you may want to use Java for scale integration and then use Merapi to integrate with the Java applet.
Yes, as long as a device is connected into a keyboard, no problem. But in reality very often there is more then one input device, plus industrial scales are all serial.
<f not, you may want to use Java for scale integration and then use Merapi to integrate with the Java applet.
could you please elaborate on that?
I have used bar code scanners and card readers that had nothing to do with the keyboard. They just took the text information and dumped it into the current application. The existed side by sie on a machine with a keyboard. They were USB devices, however, not serial devices. If the communication is one-way, I would have expected that serial devices to be treated similarly; but cn't speak to experience.
For Merapi info, go here: http://merapiproject.net/