You'll have to tell us where you want to send the commands. Do you want to sent them to the OS or to an application? (and even that is a very rough way of describing it...)

If you want to send keystrokes to an application (window), you will probably have to find out how to

• Get the handle of the frame/window you want to send the keystrokes to
• Send keyboard messages to that frame

I would know more about how to do it on Windows, but I don't know enough about QNX/Neutrino to help you here, sorry.