///drawing the text box
texture_set_interpolation(false);

//setting drawings in surface
surface_set_target(area_surface)

//drawing rectangle
draw_set_color(area_color)
draw_set_alpha(0.3);
draw_rectangle(0, 0, area_width, area_height, false)
draw_set_alpha (1);

//drawing text
draw_set_color(text_color)
draw_set_font(fnt_textbox);
draw_text_ext(10, 10+round(-scroll_pos * scroll_scale), text, -2, text_width)

//resetting the drawing target
surface_reset_target()

//drawing the surface
draw_surface(area_surface, area_x, area_y)

//drawing border and scroll-bar
draw_set_color (c_black);
draw_rectangle(area_x - 1, area_y - 1, area_x + area_width, area_y + area_height, true)
draw_sprite(spr_scroll, 0, area_x + area_width, area_y + area_height * scroll_pos);