public Tracker (Composite parent, int style) { super (parent, checkStyle (style)); this.parent = parent;
public Tracker (Display display, int style) { if (display == null) display = Display.getCurrent (); if (display == null) display = Display.getDefault (); if (!display.isValidThread ()) { error (SWT.ERROR_THREAD_INVALID_ACCESS); } this.style = checkStyle (style); this.display = display;
public Tracker (Composite parent, int style) {	super (parent, checkStyle (style));	this.parent = parent;}