Try this...

1. Slider s1;
2. void setup() {
3.     s1 = (Slider)controlP5.controller("sliderTicks1");
4. }
5. void draw() {
6.   if (s1.controlWindow().isMouseOver()) {
7.     println("over sliderTricks1");
8.   }
9. }

hmm doesnt seem to work.
just check it yourself. if you add more than 1 slider it still prints both whenever you touch any control element...

just a quick example

1. /**
    * ControlP5 Slider. Horizontal and vertical sliders,
    * with and without tick marks and snap-to-tick.
    * by andreas schlegel, 2010
    */
   
   import controlP5.*;
   
   ControlP5 controlP5;
   int myColor = color(0,0,0);
   
   int sliderValue = 100;
   int sliderTicks1 = 100;
   int sliderTicks2 = 30;
   
   Slider s2;
   Slider s1;
   void setup() {
     size(400,400);
     controlP5 = new ControlP5(this);
     // add a vertical slider
     controlP5.addSlider("slider",0,200,128,20,100,10,100);
     // create another slider with tick marks, now without
     // default value, the initial value will be set according th
     // the value of variable sliderTicks2 then.
     controlP5.addSlider("sliderTicks1",0,255,100,100,10,100);
      s1 = (Slider)controlP5.controller("sliderTicks1");
     s1.setNumberOfTickMarks(5);
    
    
     // add horizontal sliders
     controlP5.addSlider("sliderValue",0,255,128,200,180,100,10);
     controlP5.addSlider("sliderTicks2",0,255,128,200,220,100,10);
      s2 = (Slider)controlP5.controller("sliderTicks2");
     s2.setNumberOfTickMarks(7);
     // use Slider.FIX or Slider.FLEXIBLE to change the slider handle
     // by default it is Slider.FIX
     s2.setSliderMode(Slider.FLEXIBLE);
    
   }
   
   void draw() {
     background(sliderTicks1);
    
     fill(sliderValue);
     rect(0,0,width,100);
    
     fill(myColor);
     rect(0,300,width,70);
    
     fill(sliderTicks2);
     rect(0,370,width,30);
    
    if (s1.controlWindow().isMouseOver())println("S1");
    if (s2.controlWindow().isMouseOver())println("S2");
   
    
   }
   
   void slider(float theColor) {
     myColor = color(theColor);
     println("a slider event. setting background to "+theColor);
   }
   
   
   

initially this feature was supposed to be true/false only, added the controller specific mouse-over check, havnt uploaded the new version yet, will update here.

andreas schlegel, http://www.sojamo.de

hi cedric, got your message, looking at it now.

I'm not sure if this has been answered via PM or not, but for anyone else who happens to stumble here I used the isInside() method of the Slider class.  This method is inherited from controlP5.controller   (   i.e. mySlider.isInside()  ).   Hope this helps someone.

isInside is an option, or use 

but how can i do this on listbox items?!

I got the same problem and I can´t find a proper solution:

If I try:
   if (controlP5.window(this).isMouseOver(cP5.controller("N"))) println ("touché");
I' d find:
  "The method isMouseOver() in the type ControlWindow is not applicable for the arguments (Controller)"

And if I try:
    if (controlP5.controller("N").isInside()) println ("touché");
 It´d be:
   "The method isInside() from the type Controller is not visible"

Thanks&&Regards · Ale