Operators |
set_insert — Define the pixel output function.
set_insert( : : WindowHandle, Mode : )
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 definition value is only valid for the valid window. Output operators that honor Mode are e.g. disp_region, disp_polygon,disp_circle.
Possible display functions are:
overwrite displayed pixels
display old "xor" new pixels
complement displayed pixels
There may not be all functions available, depending on the physical display. However, “copy” is always available.
Window handle.
Name of the display function.
Default value: 'copy'
List of values: 'complement' , 'copy' , 'xor'
set_insert returns 2 (H_MSG_TRUE) if the parameter is correct and the window is valid. Otherwise an exception is raised.
Foundation
Operators |