glutCopyColormap(3GLUT)              GLUT              glutCopyColormap(3GLUT)



NAME
       glutCopyColormap  -  copies  the  logical colormap for the layer in use
       from a specified window to the current window.

SYNTAX
       void glutCopyColormap(int win);

ARGUMENTS
       win       The identifier of the window to  copy  the  logical  colormap
                 from.

DESCRIPTION
       glutCopyColormap  copies  (lazily  if  possible to promote sharing) the
       logical colormap from a specified window to the current window's  layer
       in  use. The copy will be from the normal plane to the normal plane; or
       from the overlay to the overlay (never across different layers). Once a
       colormap  has  been  copied,  avoid  setting cells in the colormap with
       glutSetColor since that will force an actual copy of the colormap if it
       was  previously  copied  by  reference. glutCopyColormap should only be
       called when both the current window and the win window are color  index
       windows.

EXAMPLE
       Here  is  an example of how to create two color index GLUT windows with
       their colormaps loaded identically and so that the windows  are  likely
       to share the same colormap:

         int win1, win2;

         glutInitDisplayMode(GLUTINDEX);
         win1 = glutCreateWindow("first color index win");
         glutSetColor(0, 0.0, 0.0, 0.0);  /* black */
         glutSetColor(1, 0.5, 0.5, 0.5);  /* gray */
         glutSetColor(2, 1.0, 1.0, 1.0);  /* black */
         glutSetColor(3, 1.0, 0.0, 0.0);  /* red */
         win2 = glutCreateWindow("second color index win");
         glutCopyColormap(win1);


SEE ALSO
       glutSetColor, glutGetColor, glutCreateWindow

AUTHOR
       Mark J. Kilgard (mjk@nvidia.com)



GLUT                                  3.7              glutCopyColormap(3GLUT)