Reference for Processing version 1.0+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.

Name

keyPressed

Examples
// Click on the image to give it focus
// and press any key

// Note: the rectangle in this example may 
// flicker as the operating system may 
// register a long key press as a repetition
// of key presses

void draw() {
  if (keyPressed == true) {
    fill(0);
  } else {
    fill(255);
  }
  rect(25, 25, 50, 50);
}
Description The boolean system variable keyPressed is true if any key is pressed and false if no keys are pressed.
Syntax
keyPressed
Usage Web & Application
Related key
keyCode
keyPressed()
keyReleased()
Updated on November 22, 2008 08:39:26pm PST

Creative Commons License