// especially on a Mac
FontData [] fontData = cc.getFont().getFontData();
((GridData) cc.getLayoutData()).heightHint = 2 * fontData[0].getHeight();
cc.addListener(SWT.Selection, this);
cc.setToolTipText(tip);
cc.addKeyListener(new KeyListener() {
private final StringBuffer b = new StringBuffer();
public void keyPressed(KeyEvent e) {
}