Reference for Processing (BETA) version 0135+. 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 then press any key

int value = 0;

void draw() {
  fill(value);
  rect(25, 25, 50, 50);
}

void keyPressed() 
{
  if(value == 0) {
    value = 255;
  } else {
    value = 0;
  }
}
Description The keyPressed() function is called once every time a key is pressed. Because of how operating systems handle key repeats, holding down a key will cause multiple calls to keyPressed(), the rate is set by the operating system and how each computer is configured.
Syntax
void keyPressed() { 
  statements
}
Parameters
Usage Web & Application
Related keyPressed
key
keyCode
keyReleased()
Updated on December 20, 2005 02:03:00pm PST

Creative Commons License