SWT – MouseListener & MouseAdapter Example
MouseListener
Mouse event processing is easy to implement, we need to implement MouseListener interface and declare all the interface methods.
We can attached the MouseListener to a widget with addMouseListener() method.
"widget control".addMouseListener(new MouseListener()
{
public void mouseDown(MouseEvent e)
{
System.out.println("Mouse Down.");
}
public void mouseUp(MouseEvent e)
{
System.out.println("Mouse Up.");
}
public void mouseDoubleClick(MouseEvent e)
{
System.out.println("Mouse Double click.");
}
});
Here is the full source code.
mport org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class SWTMouseListener {
public static void main (String [] args) {
Display display = new Display ();
Shell shell = new Shell(display);
//push button
Button pushButton = new Button(shell, SWT.PUSH);
pushButton.setLocation(50, 50);
pushButton.setText("Im a Push Button");
pushButton.pack();
pushButton.addMouseListener(new MouseListener()
{
public void mouseDown(MouseEvent e)
{
System.out.println("Mouse Down.");
}
public void mouseUp(MouseEvent e)
{
System.out.println("Mouse Up.");
}
public void mouseDoubleClick(MouseEvent e)
{
System.out.println("Mouse Double click.");
}
});
shell.setSize(500,500);
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
}
MouseAdapter
Sometime we only need a double clicks method in mouse event, but we implement MouseListener interface, we have to declare all interface methods. Here MouseAdapter come in place, with MouseAdapter , it gives all MouseListener a default implementation, we only need to declare the method we want to use.
We can attached the MouseAdapter to a widget with addMouseListener() method as well.
"widget control".addMouseListener(new MouseAdapter()
{
public void mouseDoubleClick(MouseEvent e)
{
System.out.println("Mouse Double click.");
}
});
Here is the full source code.
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class SWTMouseAdapter {
public static void main (String [] args) {
Display display = new Display ();
Shell shell = new Shell(display);
//push button
Button pushButton = new Button(shell, SWT.PUSH);
pushButton.setLocation(50, 50);
pushButton.setText("Im a Push Button");
pushButton.pack();
pushButton.addMouseListener(new MouseAdapter()
{
public void mouseDoubleClick(MouseEvent e)
{
System.out.println("Mouse Double click.");
}
});
shell.setSize(500,500);
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
}
thanks Mr mkyong