How to draw inside process with nodejs?

Question

C++ / C#

Is it possible to draw inside a process?
I found 2 libraries with ++
node-ffi and node-gdi
I get the process id

var user32 = new ffi.Library("user32", {
      FindWindowA: [ 'uint32' , [ 'string', 'string' ]]
});

var windowHandle = user32.FindWindowA(null, "ProccessName");

Drawing is possible if you create a new window.

const GDILib = require('gdi');

// create window
const window = GDILib.init({ title: 'GDILib - Example 1.' });

let angle = 0;

window.onPaint(g => {
  // clear screen to gray
  // g.clear(r, g, b)
  g.clear(39, 40, 34); 


  // draw text

  // g.penColor(r, g, b, a = 255)
  g.penColor(255, 255, 255);
  // g.font(name, size, weight)
  g.font('Consolas', 16, 400);
  // g.text(x, y, str)
  g.text(30, 30, 'Hello world from GDILib!');


  // draw colored triangle

  g.penColor(255, 0, 0) ;
  // g.line(startX, startY, endX, endY)
  g.line(400, 30, 500, 200);
  g.penColor(0, 255, 0);
  g.line(400, 30, 300, 200);
  g.penColor(0, 0, 255) ;
  g.line(300, 200, 500, 200);


  // draw rotating rectangle

  // g.rotate(angle, originX, originY)
  g.rotate(angle, 50 + 80, 50 + 80);
  g.penColor(255, 255, 255);

  // g.rectangle (x, y, width, height)
  g.rectangle(80, 80, 100, 100); 

});

setInterval(() => {
  angle += 1;
  window.repaint();
}, 25);

But I don't know how to connect it to be able to do it. I am not a C++ expert, so I would like to implement everything through the node