Get the current color lookup table index.
get_pixel returns the internal coding of the output grayvalue or color, respectively, for the window. If the output mode is set to color(s) or grayvalue(s) (see set_color or set_gray), then the color- or grayvalues are transformed for internal use. The internal code is then used for (physical) screen display. The transformation depends on the mapping characteristics and the condition of the output device and can be different in different program runs. Don't confuse the term "pixel" with the term "pixel" in image processing (the other procedure is get_grayval). Here a pixel is meant to be the color loookup table index.
With get_pixel it is possible to save the output mode without knowing whether colors or grayvalues are used. Pixel is set with the procedure set_pixel.
|
WindowHandle (input_control) |
window -> integer |
| Window_id. | |
|
Pixel (output_control) |
string-array -> integer |
| Index of the current color look-up table. | |
get_part_style returns 2 (H_MSG_TRUE) if the window is valid. Otherwise an exception handling is raised.
get_pixel is reentrant and processed without parallelization.
set_pixel, disp_region, disp_image
Foundation
