- Processing
- p5.js
- Processing.py
- Processing for Android
- Processing for Pi

- Processing Foundation

This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

Name | ### mouseX
Examples |
    void draw() {
      background(204);
      line(mouseX, 20, mouseX, 80);
    }
Description | The system variable mouseX always contains the current horizontal coordinate of the mouse. Note that Processing can only track the mouse position when the pointer is over the current window. The default value of mouseX is 0, so 0 will be returned until the mouse moves in front of the sketch window. (This typically happens when a sketch is first run.) Once the mouse moves away from the window, mouseX will continue to report its most recent position.
Related | mouseY pmouseX pmouseY mousePressed mousePressed() mouseReleased() mouseClicked() mouseMoved() mouseDragged() mouseButton mouseWheel()

Updated on January 1, 2021 03:38:09am EST
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