With this function you can get the full abgr 32bit value of any pixel that is being drawn to the current render target. This means that the results will depend on the event in which the function is called, and also on the target surface being used.NOTE: This function is slow and so should only be used when absolutely necessary.
col = draw_getpixel_ext(mouse_x, mouse_y);
alpha = (col >> 24) & 255;
blue = (col >> 16) & 255;
green = (col >> 8) & 255;
red = col & 255;