Correctly update QComboBox appearance on editable change

The updateDelegate() function checks isEditable() which in
turn checks if d->lineEdit != 0, so we need to make the
call after the lineEdit has actually been set/unset, otherwise
the change to the delegate will not come until the next time
you update the delegate.

[ChangeLog][QComboBox] Fixed updating appearance of popup menu
when changing the editable state of the combo box.

Change-Id: Ib32f36cabd53c2c30d6256484a1eae131419960a
Task-number: QTBUG-33537
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/widgets/widgets/qcombobox_p.h b/src/widgets/widgets/qcombobox_p.h
index 67b1aa6943..4e1b4125ab 100644
--- a/src/widgets/widgets/qcombobox_p.h
+++ b/src/widgets/widgets/qcombobox_p.h
@@ -254,7 +254,7 @@ private:
     friend class QComboBox;
 };
 
-class QComboMenuDelegate : public QAbstractItemDelegate
+class Q_AUTOTEST_EXPORT QComboMenuDelegate : public QAbstractItemDelegate
 { Q_OBJECT
 public:
     QComboMenuDelegate(QObject *parent, QComboBox *cmb) : QAbstractItemDelegate(parent), mCombo(cmb) {}
@@ -283,7 +283,7 @@ private:
 // Note that this class is intentionally not using QStyledItemDelegate
 // Vista does not use the new theme for combo boxes and there might
 // be other side effects from using the new class
-class QComboBoxDelegate : public QItemDelegate
+class Q_AUTOTEST_EXPORT QComboBoxDelegate : public QItemDelegate
 { Q_OBJECT
 public:
     QComboBoxDelegate(QObject *parent, QComboBox *cmb) : QItemDelegate(parent), mCombo(cmb) {}