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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(GLUT_INDEX);
         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)

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