The Graphics object stores and shares parameters used by the graphic elements.
Ensure the screen is declared and initialised according to the configuration procedure.
The pre-processor statement includes the GUI library.
Graphics() sets the link to the screen.
begin() initialises the GUI with the default parameters.
The default parameters set the colours of the interface to black for text, white for background and grey for middle.
Then, if needed,
myGraphics.setColours(myColours.black, myColours.white, myColours.grey);
setColours() sets the front, back and middle colours of the interface.
For monochrome and colour e-paper screens, ensure the selected colours are supported.
The graphic elements include the following objects
and one function
All the listed elements are implement on e-paper screens.