Description Jussi Suistomaa 2009-11-16 11:39:26 EST

Here's a snippet to reproduce. You should be able to see how MouseMove events are received when hovering the mouse above the Slider. But when the left mouse button is held down and the slider is dragged no MouseMove events are received by the listener. 

public class SliderTest {

static int nMouseMoves;
	
public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell();
    shell.setLayout(new FillLayout(SWT.VERTICAL));
    Slider slider = new Slider(shell, SWT.HORIZONTAL);
    final Label label = new Label(shell, SWT.LEFT);
    final String description = 
        "Number of SWT.MouseMove events receved in Slider="; 
    label.setText(description + nMouseMoves + "                 ");
    slider.addListener(SWT.MouseMove, new Listener() {
        public void handleEvent(Event event) {
        label.setText(description + (++nMouseMoves));
    }});
    shell.pack();
    shell.open();
    while(!shell.isDisposed()) {
        if(!display.readAndDispatch())
            display.sleep();
        }
    display.dispose();
    }
}