# mouseWheel on g4p window

**URL:** <https://discourse.processing.org/t/mousewheel-on-g4p-window/8134>\
**Category:** Libraries\
**Created:** [February 5, 2019, 12:44pm UTC](https://discourse.processing.org/t/mousewheel-on-g4p-window/8134 "2019-02-05T12:44:17Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Dennis](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/dennis/32/1111_2.png) [@Dennis](https://discourse.processing.org/u/Dennis)\
**Post date:** [February 5, 2019, 12:44pm UTC](https://discourse.processing.org/t/mousewheel-on-g4p-window/8134/1 "2019-02-05T12:44:17Z")

</div>

Hi guys, I would translate a g4p label on g4p further window but i can’t do it. If I use the `translate(x,y)` function on main window it work fine but in another g4p window it doesn’t.  
The function `mouseWheel` works only when the mouse is over the main window, my intent is to translate the label on `window1`.

This is the minimal code:

```auto
import g4p_controls.*;

GWindow window1;
GLabel label2; 

float ty = 0.0; // offset of Y axis traslation

 // -------------------------------------------------------
 
public void setup() {
  size(800, 600); // main window

  // create further window
  window1 = GWindow.getWindow(this, "Window title", 0, 0, 800, 600, JAVA2D);
  window1.noLoop();
  window1.setActionOnClose(G4P.KEEP_OPEN);
  window1.addDrawHandler(this, "win_draw1");
  window1.loop();

  // create the label that i wont to traslate
  label2 = new GLabel(window1, 80, 100, 80, 20);
  label2.setTextAlign(GAlign.CENTER, GAlign.MIDDLE);
  label2.setText("My label 2");
  label2.setOpaque(true);
} // end setup

 // -------------------------------------------------------

public void draw() {
  background(80);
  translate(0, ty); // affect in main window
  window1.background(60);
  window1.translate(0, ty); // affect in window1
} // end draw

 // -------------------------------------------------------

void mouseWheel(MouseEvent event) {
  ty = ty + event.getCount(); // amount of traslating
  println("ty: " + ty);
} // end mouseWheel

```

Thank’s in advance for those who help me…

---

<div class="post-metadata">

**Author:** ![kll](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/kll/32/964_2.png) [@kll](https://discourse.processing.org/u/kll)\
**Post date:** [February 5, 2019, 1:33pm UTC](https://discourse.processing.org/t/mousewheel-on-g4p-window/8134/2 "2019-02-05T13:33:10Z")

</div>

sorry, i just want show a other example, where  
@quark solved my 2 window question,  
and based on this i added 2 slider where mouse wheel works,  
incl separate event handlers.  
hope you can use any of this.

 ![2019-02-05_20-28-57_snap](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/3/3dabd1709a6255a98c24afc79cacf2110dbd0030.png)

```auto
// https://discourse.processing.org/t/mousewheel-on-g4p-window/8134
// https://discourse.processing.org/t/solved-g4p-options-in-second-window-problem/4552/3

import g4p_controls.*;
GOption option0, option1;
GOption woption0, woption1;
GCustomSlider sdr;
GCustomSlider wsdr;

GWindow[] window;

public void setup() {
  size(200, 100);
  createGUI();
  createWindows();
}

public void draw() {
  background(100, 100, 200);
}

public void createGUI() {
  int posX = 40, posY =20, dposY = 20;
  GToggleGroup tg = new GToggleGroup();

  option0 = new GOption(this, posX, posY+0*dposY, 80, 24, "A");
  option0.setTextAlign(null, GAlign.BOTTOM);

  option1 = new GOption(this, posX, posY+1*dposY, 80, 24, "B");
  option1.setTextAlign(null, GAlign.BOTTOM);

  tg.addControls(option0, option1); // Group the option buttons
  option1.setSelected(true); // Must set one of the options true

  option0.addEventHandler(this, "option_clicked");
  option1.addEventHandler(this, "option_clicked");
  
  
  sdr = new GCustomSlider(this, 70, 50, 100, 50, null);  
  // show opaque ticks value limits
  sdr.setShowDecor(false, true, true, true);
  sdr.setNbrTicks(5);
  sdr.setLimits(40, -100, 100);
  sdr.addEventHandler(this, "sdr_moved");
}

public void option_clicked(GOption source, GEvent event) { 
  if (source == option0) { 
    println("option0");
  } //option1.setSelected(false);
  if (source == option1) { 
    println("option1");
  } //option0.setSelected(false);
} 

public void win_option_clicked(GOption source, GEvent event) { 
  if (source == woption0) { 
    println("woption0");
  } //option1.setSelected(false);
  if (source == woption1) { 
    println("woption1");
  } //option0.setSelected(false);
} 

// _______________________________________________________________________
public void createWindows() {

  window = new GWindow[1];
  // for (int i = 0; i < 1; i++) {
  // window[i] = GWindow.getWindow(this, " ", 70+i*220, 160+i*50, 400, 400, JAVA2D);
  // }
  // menu window config
  window[0] = GWindow.getWindow(this, "window2", 70, 160, 200, 100, JAVA2D);
  window[0].setActionOnClose(G4P.CLOSE_WINDOW);
  //window[0].addOnCloseHandler(this, "windowClosing");
  //window[0].addData(new MyWinData());
  window[0].addDrawHandler(this, "windowDraw");
  //window[0].addMouseHandler(this, "windowMouse");
  //window[0].addKeyHandler(this, "windowKey");

  int posX = 40, posY =20, dposY = 20;
  GToggleGroup wtg = new GToggleGroup();

  woption0 = new GOption(window[0], posX, posY+0*dposY, 80, 24, "wA");
  woption0.setTextAlign(null, GAlign.BOTTOM);

  woption1 = new GOption(window[0], posX, posY+1*dposY, 80, 24, "wB");
  woption1.setTextAlign(null, GAlign.BOTTOM);

  wtg.addControls(woption0, woption1); // Group the option buttons

  woption1.setSelected(true); // Must set one of the options true

  woption0.addEventHandler(this, "win_option_clicked");
  woption1.addEventHandler(this, "win_option_clicked");
  
  wsdr = new GCustomSlider(window[0], 70, 50, 100, 50, null);  
  // show opaque ticks value limits
  wsdr.setShowDecor(false, true, true, true);
  wsdr.setNbrTicks(5);
  wsdr.setLimits(40, -100, 100);
  wsdr.addEventHandler(this, "wsdr_moved");

}

public void sdr_moved(GCustomSlider slider, GEvent event) { 
  if (slider == sdr) println("sdr integer value:" + slider.getValueI() + " float value:" + slider.getValueF());
}

public void wsdr_moved(GCustomSlider slider, GEvent event) { 
  if (slider == wsdr) println("wsdr integer value:" + slider.getValueI() + " float value:" + slider.getValueF());
}

// _______________________________________________________________________
synchronized public void windowDraw(PApplet appc, GWinData data) {
  // MyWinData data2 = (MyWinData)data;
  appc.background(200, 200, 0);
}

```

better help might come from quark.

---

<div class="post-metadata">

**Author:** ![Dennis](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/dennis/32/1111_2.png) [@Dennis](https://discourse.processing.org/u/Dennis)\
**Post date:** [February 5, 2019, 1:36pm UTC](https://discourse.processing.org/t/mousewheel-on-g4p-window/8134/3 "2019-02-05T13:36:59Z")

</div>

Thank’s a lot! Now I’m going to studing it… 👍