How to draw graphs on canvas?

[Zak_Razak]

I found this post by Michel Bujardet (Tester) on Dec 2014:

updating code from old canvas.graphics to Paint for drawing

Start by finding all the places where you are doing canvas1.graphics.drawpicture or similar , and replace them with canvas1.invalidate inside the canvas1.paint event, draw everything Draw the lines, text, etc you may need to have pictures and object2d items as properties of the window in order to get at them from inside the paint event. Or you may create a canvas subclass that has properties such as thePicture, theText, theArrayOfLines() and in the paint event draw them to the g object yo…

I am sure XOJO can do much more but this is what I wanted and will get me started.

My problem solved