[news.eclipse.platform.swt] Re: how to show text message under the mouse

[Peter Goetz <kingofbrain@xxxxxx>]

Daniel Mark wrote:
> hello all:

Hi Daniel,

> I want to do a simple draw tool using java.
> whenever the user moves the mouse, I need to
> show current coordinate as (x, y) right beside the mouse
> pointer.

You could add a Tooltip to the widget you want to give the coordinates of.
Also you have to add a MouseMoveListener to the widget. Every time the mouse 
moves, the text for the tooltip gets updated.

I have coded this little example for you:

import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class XYCoordinates
{
    public static void main(String[] args)
    {
        Display display = new Display ();
        Shell shell = new Shell (display);
        Composite comp = new Composite(shell, SWT.NONE);

        comp.setBackground(display.getSystemColor(SWT.COLOR_BLUE));
        comp.addMouseMoveListener(new MouseMoveListener()
        {
        	public void mouseMove(MouseEvent e)
        	{
        		((Composite) e.getSource()).setToolTipText(
							"" + e.x + "," + e.y);
            }
        });

        shell.setSize(400, 400);
        shell.setLayout(new FillLayout());
        shell.open ();

        while (!shell.isDisposed ())
        {
            if (!display.readAndDispatch ())
            {
            	display.sleep ();
            }
        }

        display.dispose ();
    }
}


>   how can I do?
>
> thank you
> -Daniel

HTH, Peter

>