MouseWheelListener in JFrame that was created in java does not work

Hi all,

I have a java class with a constructor that receives some java model object. The class extends JFrame and visualizes the model. There is a MouseWheelListener to allow zooming into the model visualization.

public class myGUI extends JFrame {

    public myGUI(myModelClass model) {
        add(new modelCanvas(model));
    }

}  

public class modelCanvas extends JPanel {

    private myModelClass model;

    public modelCanvas(myModelClass model) {
        this.model = model;
        addMouseWheelListener(new myMouseWheelListener());
    }

    public void paintComponent(java.awt.Graphics g) {
        // paints the model canvas
    }

}

All works well when myGUI is invoked from java. As soon as I create a myModelClass in matlab and create a myGUI from it, 2 things happen:

1. Look-and-feel is different, which is ok.
2. The MouseWheelListener does not work, which renders the visualization useless.

Is there a way to circumvent the 2nd issue?

Wouter

Answer 1

[Wouter]

Putting a MouseWheelListener on the JFrame instead of the JPanel inside it, and then transposing the mouse location (java.awt.Point) information did the trick. Ugly way to program the scroll=zoom function, but it does work. Still strange though.