Name

mouseDragged()

Description

The mouseDragged() function is called once every time the mouse moves while a mouse button is pressed. (If a button is not being pressed, mouseMoved() is called instead.)

Mouse and keyboard events only work when a program has draw(). Without draw(), the code is only run once and then stops listening for events.

Examples

  • // Drag (click and hold) your mouse across the 
    // image to change the value of the rectangle
    
    int value = 0;
    
    void draw() {
      fill(value);
      rect(25, 25, 50, 50);
    }
    
    void mouseDragged() 
    {
      value = value + 5;
      if (value > 255) {
        value = 0;
      }
    }
    

Syntax

  • mouseDragged()
  • mouseDragged(event)

Return

  • void