Basics

Hi, I'm new here :)
first of all, can anyone point me to a specific code examples about Listeners and Shells?

Now three questions:

1. How do I open a shell inside a shell? i.e, I have the main shell in display and now wanting to open a Message-Box-like shell, that will contain a Text to get some string...
So, I understand the creation, yet I can't find what to write as the part that makes the shell listen constantly. Meaning, what will I do that is similar to:

Code:

---

    shell.open();
    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in the event queue
        display.sleep();
      }
    }
    display.dispose();

---

(The problem is of course that I DON'T have the "display" object, 'cause the parent here is the main shell...

2. My main shell is defined where the main function is, yet I would like to pop a MessageBox somewhere else. How can I do it when I need to know what shell am I in?

3. Assuming layoutData is of shell is defined as GridData, what determines whether information will be shown by rows or by coloumns?

Thanks in advance,
Avishay

Code tags added to make posted code retain its formatting and be more readable.

Hi,
use your shell as parent for your Messagebox.
Example code is,

Code:

---

public class SWTApp {


        public SWTApp(Display display) {

        final Shell shell = new Shell(display);
        shell.setText("Center");
        shell.setSize(250, 200);
        shell.open();
       
        shell.setMinimumSize(100, 100);
        Button  button=new Button(shell,SWT.PUSH);
        button.setBounds(100, 100, 300, 150);
        button.setText("Click Me");
        button.addSelectionListener(new SelectionListener(){

               
                public void widgetDefaultSelected(SelectionEvent arg0) {
                       
                       
                }

               
                public void widgetSelected(SelectionEvent arg0) {
                       
                        MessageBox mb=new MessageBox(shell,SWT.OK|SWT.ICON_INFORMATION);
                        mb.setMessage("Hello welcome");
                        mb.setText("Hi");
                        mb.open();
                }
               
               
        });

        while (!shell.isDisposed()) {
        if (!display.readAndDispatch()) {
        display.sleep();
        }
        }
        }
        public static void main(String[] args) {
        Display display = new Display();
        new SWTApp(display);
        display.dispose();
        }
        }

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