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-rw-r--r--doc/src/porting4-overview.qdoc6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/src/porting4-overview.qdoc b/doc/src/porting4-overview.qdoc
index b0146a6..462f849 100644
--- a/doc/src/porting4-overview.qdoc
+++ b/doc/src/porting4-overview.qdoc
@@ -364,4 +364,10 @@
In Qt 4.2 and later, \l{Qt Style Sheets} can be used to
implement many common modifications to existing styles, and
this may be sufficient for Qt 3 applications.
+
+ \section2 Events
+ In Qt 3, QCloseEvents were not accepted by default. In Qt 4,
+ the event handler QWidget::closeEvent() receives QCloseEvents,
+ and accepts them by default closing the application. To avoid
+ this, please reimplement QWidget::closeEvent().
*/