paulet@terre.matra-espace.fr (Pascal PAULET 6109 FAMI2) (12/13/90)
Alan, you wrote: (Message-Id: <EJJA-2921-9149@nasamail>) >I need to provide some kind of software blinking of colors. >This is someting of a grey area for me (pardon the pun). >Could a program be written to add a group of colors to the >root window's default colormap, and periodically change the >definition of those colors - thus affecting *all* windows >on the display? I personally never wrote such a program but I've seen a commercial UIMS (SAMMI2 from SSI) which implemented a solution. By tracing the X protocol with xscope, you can see that they have a dedicated process which just uses XStoreColors on some entries of the default colormap. In this way, they toggle specific entries of the colormap and this provides quite a good blinking effect for X clients using these specific entries. Pascal.