Definition of the pixel output function.
set_insert defines the function, with which pixels are displayed in the output window. It is e.g. possible for a pixel to overwrite the old value. In most of the cases there is a functional relationship between old and new values.
The definiton value is only valid for the active window. Output procedures that honor Mode are e.g. disp_region, disp_polygon,disp_circle.
Possible display functions are: 'copy' overwrite displayed pixels 'xor' display old "xor" new pixels 'not' complement displayed pixels
There may not be all functions available, depending on the physical display. However, "copy" is always available.
Mode (input_control) |
string -> string |
name of the display function. | |
Default value: 'copy' | |
List of values: 'copy', 'xor', 'not' |
set_insert returns TRUE, if the paramter is correct and a window is active. Otherwise an exception is raised.