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 | mousePressed() | 
|---|---|
| Examples | // Click within the image to change 
// the value of the rectangle
int value = 0;
void draw() {
  fill(value);
  rect(25, 25, 50, 50);
}
void mousePressed() {
  if(value == 0) {
    value = 255;
  } else {
    value = 0;
  }
} | 
| Description | The mousePressed() function is called once after every time a mouse button is pressed. The mouseButton variable (see the related reference entry) can be used to determine which button has been pressed. | 
| Syntax | void mousePressed() { 
  statements
} | 
| Returns | None | 
| Usage | Web & Application | 
| Related | mouseX mouseY mouseButton mousePressed mouseReleased() mouseMoved() mouseDragged() | 

