Set up your joystick as the keyboard, of course. JoyToKey (no longer available) is the program you're looking for to accomplish this. To map a button to act as a particular key simply double-click the button in question, then set the keys as you will. You're not limited to the keyboard, either. Independent surveillance system - IP keyboard controller with decoding capacity. How to Connect an IP Joystick Controller to Manage Multiple PTZ Cameras.
Wall Controller, Decoder, etc.; and shortcut operation of camera/camera groups switch on video wall l Connectable to dome and realize PTZ control and picture capture by joystick operation l Accessible to DVR via network or serial port, and operation of front panel buttons. l 16 user accounts management... Network PTZ Control Keyboard is designed for quick control of speed dome camera and PTZ in same LAN, which cannot control conveniently through a mouse. 7 Inch Large LCD Screen can simultaneously present 4-CH video display. Support video output via HDMI at 1080P resolution.