DataMuseum.dk

Presents historical artifacts from the history of:

DKUUG/EUUG Conference tapes

This is an automatic "excavation" of a thematic subset of
artifacts from Datamuseum.dk's BitArchive.

See our Wiki for more about DKUUG/EUUG Conference tapes

Excavated with: AutoArchaeologist - Free & Open Source Software. 

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Index: T f

⟦ac6b84e27⟧ TextFile

    Length: 797 (0x31d)
    Types: TextFile
    Names: »fprgb.frag«

Derivation

└─⟦8648bda34⟧ Bits:30007244 EUUGD5_II: X11R5
    └─⟦2ca9b63e1⟧ »./contrib-1/contrib-1.00« 
        └─⟦a8392fb20⟧ 
            └─⟦this⟧ »contrib/examples/OReilly/Vol1/basicwin/color/fprgb.frag«

TextFile

   XStandardColormap \f(CWbest_map_info\fP;
   float red, green, blue;
   unsigned long pixelvalue;
   int status;

.XX "XGetStandardColormap, example using"
   status = XGetStandardColormap(display, RootWindow(display,
      screen), &best_map_info, XA_RGB_BEST_MAP);

   if (!status)
      {
      printf("%s: specified standard colormap not available", argv[0]);
      exit(-1);
      }

   pixelvalue = \f(CWbest_map_info\fP.base_pixel +
      ((unsigned long)(0.5 + (red * \f(CWbest_map_info\fP.red_max)) *
           \f(CWbest_map_info\fP.red_mult) + 
      ((unsigned long)(0.5 + (green * \f(CWbest_map_info\fP.green_max)) * 
           \f(CWbest_map_info\fP.green_mult) +
      ((unsigned long)(0.5 + (blue * \f(CWbest_map_info\fP.blue_max)) *
           \f(CWbest_map_info\fP.blue_mult);