3 files changed, 26 insertions, 9 deletions
diff --git a/src/widgets/qdialogbuttons.cpp b/src/widgets/qdialogbuttons.cpp
index 787a406..39f6d67 100644
--- a/src/widgets/qdialogbuttons.cpp
+++ b/src/widgets/qdialogbuttons.cpp
@@ -150,6 +150,12 @@ QDialogButtons::isButtonVisible(Button button) const
     return ((int)(d->visible & button)) == button;
 }
 
+Q_UINT32
+QDialogButtons::visibleButtons() const
+{
+    return d->visible;
+}
+
 void
 QDialogButtons::addWidget(QWidget *w)
 {
diff --git a/src/widgets/qdialogbuttons_p.h b/src/widgets/qdialogbuttons_p.h
index 73bbfee..56c34c2 100644
--- a/src/widgets/qdialogbuttons_p.h
+++ b/src/widgets/qdialogbuttons_p.h
@@ -72,6 +72,7 @@ public:
     inline void hideButton(Button b) { setButtonVisible(b, FALSE); }
     virtual void setButtonVisible(Button, bool visible);
     bool isButtonVisible(Button) const;
+    Q_UINT32 visibleButtons() const;
 
     void addWidget(QWidget *);
 
diff --git a/src/widgets/qtabbar.cpp b/src/widgets/qtabbar.cpp
index fca4957..383285d 100644
--- a/src/widgets/qtabbar.cpp
+++ b/src/widgets/qtabbar.cpp
@@ -335,7 +335,7 @@ private:
 */
 
 QTabBar::QTabBar( QWidget * parent, const char *name )
-    : QWidget( parent, name, WNoAutoErase | WNoMousePropagation  )
+    : QWidget( parent, name, WNoAutoErase | WNoMousePropagation  ), l(NULL)
 {
     d = new QTabPrivate;
     d->pressed = 0;
@@ -839,7 +839,10 @@ void QTabBar::show()
 
 int QTabBar::currentTab() const
 {
-    const QTab * t = l->getLast();
+    const QTab * t = 0;
+    if (l) {
+        t = l->getLast();
+    }
 
     return t ? t->id : -1;
 }
@@ -965,10 +968,12 @@ void QTabBar::keyPressEvent( QKeyEvent * e )
 
 QTab * QTabBar::tab( int id ) const
 {
-    QTab * t;
-    for( t = l->first(); t; t = l->next() )
-	if ( t && t->id == id )
-	    return t;
+    if (l) {
+	QTab * t;
+	for( t = l->first(); t; t = l->next() )
+	    if ( t && t->id == id )
+		return t;
+    }
     return 0;
 }
 
@@ -982,7 +987,8 @@ QTab * QTabBar::tab( int id ) const
 QTab * QTabBar::tabAt( int index ) const
 {
     QTab * t;
-    t = lstatic->at( index );
+    QPtrList<QTab> internalList = *lstatic;
+    t = internalList.at( index );
     return t;
 }
 
@@ -996,8 +1002,9 @@ QTab * QTabBar::tabAt( int index ) const
 int QTabBar::indexOf( int id ) const
 {
     QTab * t;
+    QPtrList<QTab> internalList = *lstatic;
     int idx = 0;
-    for( t = lstatic->first(); t; t = lstatic->next() ) {
+    for( t = internalList.first(); t; t = internalList.next() ) {
 	if ( t && t->id == id )
 	    return idx;
 	idx++;
@@ -1014,7 +1021,10 @@ int QTabBar::indexOf( int id ) const
 */
 int QTabBar::count() const
 {
-    return l->count();
+    if (l) {
+	return l->count();
+    }
+    return 0;
 }