example of a function to turn string into pgraphics

string_into_pgraphics.pde

String t = "start";

PGraphics pg;

void setup() {
  size(500, 500);
}

void draw() {
  background(0);
  text(t, 20, 20);


  if (mousePressed) {
    pg = turnStringIntoImage(t);

    image(pg, mouseX, mouseY);
  }
}

void keyPressed() {
  t = t + key;
}

PGraphics turnStringIntoImage(String myString) {
  PGraphics p = createGraphics(500, 500, P2D);
  p.beginDraw();
  p.text(myString, 10, 10);
  p.endDraw();
  return p;
}