Reference for Processing version 1.5. If you have a previous version, use the reference included with your software. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Javadoc.
| 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() | 

