When HUD is active how do I deactivate background FPS camera movement?

Hi Guys,

I am using a HUD/Widget as a menu screen to change game settings. When the HUD is active the FPS camera view is blurred out but still visible in the background, and the mouse cursor is activated so that I can manipulate the HUD buttons. Everything works fine, however when I move the mouse cursor the blurred out FPS camera is still active and moving around in the same directions as the mouse cursor. This is really annoying.

Can somebody tell me how, when in HUD mode, I can move the mouse cursor around but the FPS camera in the background is set to inactive or not moving.

THX!

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cheers mate!