31 lines
1.1 KiB
C
31 lines
1.1 KiB
C
/***********************************************************************/
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/* */
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/* Objective Caml */
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/* */
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/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
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/* */
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/* Copyright 1996 Institut National de Recherche en Informatique et */
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/* Automatique. Distributed only by permission. */
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/* */
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/***********************************************************************/
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/* $Id$ */
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#include "libgraph.h"
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value gr_point_color(value vx, value vy)
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{
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int x = Int_val(vx);
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int y = Int_val(vy);
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XImage * im;
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int rgb;
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gr_check_open();
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im = XGetImage(grdisplay, grbstore.win, x, Bcvt(y), 1, 1, (-1), ZPixmap);
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rgb = gr_rgb_pixel(XGetPixel(im, 0, 0));
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XDestroyImage(im);
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return Val_int(rgb);
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}
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