Color of a screen pixel: Difference between revisions

{{libheader|Xlib}}

<lang c>

#include <X11/xlib.h>

void

get_pixel_color (Display *d, int x, int y, XColor *color)

{

XImage *image;

image = XGetImage (d, RootWindow (d, DefaultScreen (d)), x, y, 1, 1, AllPlanes, XYPixmap);

color->pixel = XGetPixel (image, 0, 0);

XFree (image);

XQueryColor (d, DefaultColormap(d, DefaultScreen (d)), color);

}

// Your code

XColor c;

get_pixel_color (display, 30, 40, &c);

printf ("%d %d %d\n", c.red, c.green, c.blue);

</lang>