QTreeView: now dragging lots of items is fast

3 files changed, 4 insertions, 4 deletions

diff --git a/src/corelib/kernel/qabstractitemmodel.cpp b/src/corelib/kernel/qabstractitemmodel.cpp
index 914f44f..1c3371f 100644
--- a/src/corelib/kernel/qabstractitemmodel.cpp
+++ b/src/corelib/kernel/qabstractitemmodel.cpp
@@ -1407,7 +1407,7 @@ QMap<int, QVariant> QAbstractItemModel::itemData(const QModelIndex &index) const
     QMap<int, QVariant> roles;
     for (int i = 0; i < Qt::UserRole; ++i) {
         QVariant variantData = data(index, i);
-        if (variantData.type() != QVariant::Invalid)
+        if (variantData.isValid())
             roles.insert(i, variantData);
     }
     return roles;
diff --git a/src/corelib/kernel/qmimedata.cpp b/src/corelib/kernel/qmimedata.cpp
index 3d2a7cb..4a1ba9f 100644
--- a/src/corelib/kernel/qmimedata.cpp
+++ b/src/corelib/kernel/qmimedata.cpp
@@ -105,7 +105,7 @@ QVariant QMimeDataPrivate::retrieveTypedData(const QString &format, QVariant::Ty
     Q_Q(const QMimeData);
 
     QVariant data = q->retrieveData(format, type);
-    if (data.type() == type || data.type() == QVariant::Invalid)
+    if (data.type() == type || !data.isValid())
         return data;
 
     // provide more conversion possiblities than just what QVariant provides
diff --git a/src/corelib/kernel/qvariant.cpp b/src/corelib/kernel/qvariant.cpp
index 8bf70cb..2ef9de4 100644
--- a/src/corelib/kernel/qvariant.cpp
+++ b/src/corelib/kernel/qvariant.cpp
@@ -1905,7 +1905,7 @@ void QVariant::load(QDataStream &s)
     create(static_cast<int>(u), 0);
     d.is_null = is_null;
 
-    if (d.type == QVariant::Invalid) {
+    if (!isValid()) {
         // Since we wrote something, we should read something
         QString x;
         s >> x;
@@ -1949,7 +1949,7 @@ void QVariant::save(QDataStream &s) const
         s << QMetaType::typeName(userType());
     }
 
-    if (d.type == QVariant::Invalid) {
+    if (!isValid()) {
         s << QString();
         return;
     }