On Mon, Jan 12, 2009 at 9:15 PM, swamynathan <mesw...@gmail.com> wrote:
> > eg if i press 'a' , 'a' is passed to the function > if i press 'a','d' then the function should be called simultaneously > > The standard keyboard controller (the chip inside the keyboard) does not work like a piano keyboard. When the user presses a key, it sends the corresponding 'scan code' to the OS's handler. If you keep pressing the same key, it starts to go into a repeat mode to keep transmitting the scan code again and again to the OS handler. When you press another key while holding down the previous key, on most controllers, the repeat mode kicks out and sends the new key's scan code once and stops irrespective of weather the user continues to hold both keys down or not. The only exception of course is the special keys Alt, Ctrl & Shift. They can be used in combination with other keys and your program can handle 2 keys (eg Alt+A, Ctrl+A) together or even handle 4 keys (eg Alt+Ctrl+Shift+A) together, but only the special keys. regards, Arun Venkataswamy arun289.wordpress.com _______________________________________________ To unsubscribe, email ilugc-requ...@ae.iitm.ac.in with "unsubscribe <password> <address>" in the subject or body of the message. http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
