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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