diff -r 5dc02b23752f -r 3e2da88830cd src/gui/kernel/qwhatsthis.cpp
--- a/src/gui/kernel/qwhatsthis.cpp	Tue Jul 06 15:10:48 2010 +0300
+++ b/src/gui/kernel/qwhatsthis.cpp	Wed Aug 18 10:37:55 2010 +0300
@@ -143,7 +143,7 @@
     \sa QToolTip
 */
 
-Q_DECL_IMPORT extern void qDeleteInEventHandler(QObject *o);
+Q_CORE_EXPORT void qDeleteInEventHandler(QObject *o);
 
 class QWhatsThat : public QWidget
 {