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When the structure has been shown on the target system, the positions can be reused in the code,
because they are exported as constants in the GuiVar.h file. The graphical primitives in the GuiLib
unit can then be used for manual drawing, i.e. pixels, lines, boxes, etc.
The advantage of the above procedure is that the position and size of the box can be adjusted in
easyGUI by tweaking the values in the position tables, without touching anything on the target system,
and it will still work.
GRAPHICAL ITEMS
Some graphics have already been touched in this tutorial, but to see all the graphical drawing
capabilities of easyGUI it is useful to take a look at the Screen Basic Graphics[-1] structure.
This structure shows a random sample of the different graphical elements in easyGUI and shows how
to use the four rectangle types and the four circle types.
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