USB Uirt Help Please!

Working on getting usb uirt set up with Homeseer for use with my htpc, but the one thing I can't figure out is how to get it to repeat the key pressed when I hold down the button
Example pressing a button on the touch screen volume + to continue to raise volume. It will only send the key once until another is pressed.
Any help would be much appreciated.
Thanks
Thom
Example pressing a button on the touch screen volume + to continue to raise volume. It will only send the key once until another is pressed.
Any help would be much appreciated.
Thanks
Thom