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void MyForm::entryFocusCB(Widget w, XtPointer clientData, XtPointer)
{
MyFormItem *formItem = static_cast<MyFormItem *>(clientData);
MyForm *form = formItem->getForm();
QByteArray stuff = formItem->getContent();
form->setUndoCache( formItem->getFieldW(), stuff.data());
formItem->activateWidget(w);
// We're doing an activate widget instead of an activate field because the
// date entry widget has three widgets in it.
}