if (!content.isDetached()) {
for (Component c : multiSplitContainer.getTabbedComponents()) {
if (c instanceof JTabbedContentPane) {
JTabbedContentPane tabbedContentPane = ((JTabbedContentPane) c);
int index = tabbedContentPane.indexOfContent(content);
if (index != -1) {
String newToolTip = (String) evt.getNewValue();
if (newToolTip == null)
newToolTip = "";
tabbedContentPane.setToolTipTextAt(index, newToolTip);