Is this a windows supplied API? or did it come with the devices? Also, is there documentation for it? thanks

Oh, Ok, thanks for explaining that, makes since now. Always wondered why USB was so different. - thanks

Hey all, I have several projects that I want to complete that involve USB devices. I was wondering if there is any generic way to grab the output and input to any USB device. I'm not looking for anything too clean, just something that works for the moment, as I will spend time adjusting the method to my various projects. At any rate, is there a generic way to access the output and input of any USB device in windows? (or even just grab the output?) thanks, - legit legit-tech.net I'm moving this post from the MFC/C++ forum (if an admin wants to remove that other post to prevent duplicate posts that'd be great!)

Hey all, I have several projects that I want to complete that involve USB devices. I was wondering if there is any generic way to grab the output and input to any USB device. I'm not looking for anything too clean, just something that works for the moment, as I will spend time adjusting the method to my various projects. At any rate, is there a generic way to access the output and input of any USB device in windows? (or even just grab the output?) thanks, - legit legit-tech.net

hey all, So I am reading a file into a char buffer[] and need to combine two of the values in the buffer into an int value. The Documentation for my device says that values 5 and 6 in the array are one value with MSB first. How can I put these values into an int? thanks - legit

Can you point me to the documentation for those functions ( CreateFile and DeviceIOControl)? thanks - legit

Hey all, I've been wanting to start a project for a while that involves several topics I have no knowledge on. One of those topics is communicating with a USB device in windows. I have a Matrix Orbital 503c wich has a VK204-24-USB (manual: http://www.matrixorbital.ca/manuals/VK\_series/VK204-24-USB/) Screen and im looking to build a small program to communicate with it. So I have found several articles on this site about serial communications and my question is this: Is USB just another serial device or does it require a special kind of communication? Secondly since I have no experience with Hardware I/O does anyone have any suggested readings to give me some good beginners knowledge on the topic? Thanks -legit