(ui-cam-focus [focus-change|mouse-cross])Set the focus policy for the camera windows. The default is
mouse-cross: a camera is made the active camera (for interactive
mouse events) when the mouse cursor crosses the window. Because this
means it can become complicated to activate a specific camera (in the
context of multiple camera windows) there is also the option to only
change the camera focus when the window-manager decides to give it the
focus for input events. So, after specifying focus-change it
depends on the focus-change configuration of your window-manager when a
camera becomes the active camera for mouse-interaction. To change this
behaviour permanently you could, e.g., place the following line in your
${HOME}/.geomview file (see Customization: .geomview files):
(progn (ui-cam-focus focus-change) ... # other stuff )