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i want to read the data from USB Port continuously as soon as i press a button and Open a dialog box in MFC? Pls someone help me out?
Thanks in Advance.
Posted 15-Jun-12 22:47pm
Updated 15-Jun-12 22:49pm
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Solution 1

No, you don't.

What you actually want to do is handle the SerialPort DataRecieved messages, and process each byte as it arrives, or transfer them to a buffer for processing in the background.

If you try to read continuously, you will lock up your UI and annoy your users...
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Anurag Kela 16-Jun-12 5:19am
   
i didn't get you? i want to read the response generated by my hardware on Printer keystrokes as soon as dialog opens.
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Solution 2

There are several applications like that here on CP - search and look through them. Here is one to get you started: CSerialIO - A Useful and Simple Serial Communication Class[^]

You tagged C++, so that is the example I added here. There are other nice projects in C# if you are interested.

Soren Madsen
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Anurag Kela 16-Jun-12 5:17am
   
i have gone through your project before and it really helps to understand the serial communication concept for the freshers like me.
i will tell u what m trying to do.
i m sending a command to my hardware on a button click event and after that m opening a new dialog and i want to read the data from USB as soon as the dialog initializes or simultaneously
Anurag Kela 16-Jun-12 5:34am
   
My Project deadline are too close n i have to do something on it by monday so pls help me out?

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