passine event from one form to other gui form

[Sun Il Kumar]

if( yes == can we pass or call an event of one form from another form) {
can you give me an examole to call a button_click event of the one gui form from another form;
}
else {
any other logic to same;
}





i am just a beginner.............please help me out

[marc weber]

Welcome to the Ranch!

It sounds like you might be talking about JavaScript rather than Java. Can you give us more details about exactly what you want to do?

[Sun Il Kumar]

yes



like........We have a buttton ButttonMain in parent form and ButtonChild in child form. I want to call the event ButtonChild_click of ButtonChild from ButtonMain of main form In java not in java script


can it is possible..........if yes then give me an example...........if not can we perform this functionality from any other way to call a form event from other form in java




SKM

[Matthew Brown]

There are a few ways you could manage this.

1. If you can make the JButton (I assume you're using JButtons) on one form available to the other form you can call the doClick() method of that button to simulate it being clicked.

2. You could add the same ActionListener to both buttons.

3. You could define a method on one of the forms, and have the actionPerformed method of the two ActionListeners call it.

So the first approach makes one button fake a button click on the other, and the other two make the two buttons have the same effect. Either way, one of the forms will need a reference to the other. Here's a simplified example (using option 1):

import javax.swing.*;
import java.awt.event.*;

public class ParentFrame extends JFrame {
    private ChildFrame childFrame;
    private JButton button;

    ParentFrame(ChildFrame child) {
        super("Parent frame");
        childFrame = child;
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(300, 200);

        button = new JButton("Parent button");
        add(button);

        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                childFrame.pressButton();
            }
        });
    }


    public static void main(String[] args) {
        ChildFrame child = new ChildFrame();
        ParentFrame parent = new ParentFrame(child);

        parent.setVisible(true);
        child.setVisible(true);
    }
}

class ChildFrame extends JFrame {
    private JButton button;
    ChildFrame() {
        super("Child frame");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(200, 100);
        button = new JButton("Child button");
        add(button);

        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showMessageDialog(ChildFrame.this, "Child button pressed");
            }
        });
    }

    void pressButton() {
        button.doClick();
    }
}

[Sun Il Kumar]

thanks sir, Matthew Browns
I was making a project .............and need this functionality .......thanks so much sir.