get_rgb — Get the current color in RGB-coding.
get_rgb( : : WindowHandle : Red, Green, Blue)
get_rgb returns the output colors or gray values, respectively, for
the output window. They are defined by the three color
components red, green and blue.
The values returned by get_rgb can be set with
set_rgb.
WindowHandle (input_control) window → (handle)
Window handle.
Red (output_control) integer-array → (integer)
The current color's red value.
Green (output_control) integer-array → (integer)
The current color's green value.
Blue (output_control) integer-array → (integer)
The current color's blue value.
get_rgb returns 2 (H_MSG_TRUE) if the window is valid.
Otherwise an exception is raised.
set_rgb,
disp_region,
disp_image
Foundation