1. A system for remote controlling of mouse cursor functions of a computer device, comprising: a handheld pointing device comprising at least one button, at least one transmitting device and a first controller; a locating device comprising at least one receiving device, and a second controller; and a computer comprising a third controller and a graphical display; wherein said locating device is tracking movement of said handheld pointing device in a three dimensional monitoring space based on locating, in the three dimensional space, an optical directional carrier sent by said at least one transmitting device of said handheld pointing device; wherein said first controller modulates said directional carrier with a pulse pattern based on a corresponding manual operation action at said handheld pointing device; wherein said second controller converts said tracked movement of said handheld pointing device in the three dimensional monitoring space to movement information corresponding to the movement of the handheld pointing device in the three dimensional monitoring space, which are converted into valid desktop coordinates for said computer device, demodulates said directional carrier and evaluates said pulse pattern in order to determine a corresponding manual operating action at said handheld pointing device; and wherein said third controller moves a mouse cursor on said graphical display based on said valid desktop coordinates; and takes corresponding action if a defined manual operating action at said handheld pointing device is determined.