QtWidgets: Fix const correctness in old style casts

Found with GCC's -Wcast-qual.

Change-Id: Ia0aac2f09e9245339951ffff13c94684f8498f21
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>

3 files changed, 9 insertions, 9 deletions

diff --git a/src/widgets/widgets/qdockwidget.cpp b/src/widgets/widgets/qdockwidget.cpp
index bee12f2d85..db8d167b0d 100644
--- a/src/widgets/widgets/qdockwidget.cpp
+++ b/src/widgets/widgets/qdockwidget.cpp
@@ -790,7 +790,7 @@ bool QDockWidgetPrivate::isAnimating() const
     if (mainWinLayout == 0)
         return false;
 
-    return (void*)mainWinLayout->pluggingWidget == (void*)q;
+    return (const void*)mainWinLayout->pluggingWidget == (const void*)q;
 }
 
 bool QDockWidgetPrivate::mousePressEvent(QMouseEvent *event)
diff --git a/src/widgets/widgets/qtabwidget.cpp b/src/widgets/widgets/qtabwidget.cpp
index 707c430aa8..8ca5f0dc01 100644
--- a/src/widgets/widgets/qtabwidget.cpp
+++ b/src/widgets/widgets/qtabwidget.cpp
@@ -826,7 +826,7 @@ QSize QTabWidget::sizeHint() const
     if(d->rightCornerWidget)
         rc = d->rightCornerWidget->sizeHint();
     if (!d->dirty) {
-        QTabWidget *that = (QTabWidget*)this;
+        QTabWidget *that = const_cast<QTabWidget*>(this);
         that->setUpLayout(true);
     }
     QSize s(d->stack->sizeHint());
@@ -858,7 +858,7 @@ QSize QTabWidget::minimumSizeHint() const
     if(d->rightCornerWidget)
         rc = d->rightCornerWidget->minimumSizeHint();
     if (!d->dirty) {
-        QTabWidget *that = (QTabWidget*)this;
+        QTabWidget *that = const_cast<QTabWidget*>(this);
         that->setUpLayout(true);
     }
     QSize s(d->stack->minimumSizeHint());
@@ -894,7 +894,7 @@ int QTabWidget::heightForWidth(int width) const
     if(d->rightCornerWidget)
         rc = d->rightCornerWidget->sizeHint();
     if (!d->dirty) {
-        QTabWidget *that = (QTabWidget*)this;
+        QTabWidget *that = const_cast<QTabWidget*>(this);
         that->setUpLayout(true);
     }
     QSize t(d->tabs->sizeHint());
diff --git a/src/widgets/widgets/qtoolbox.cpp b/src/widgets/widgets/qtoolbox.cpp
index 0127e0766a..32fcdc3665 100644
--- a/src/widgets/widgets/qtoolbox.cpp
+++ b/src/widgets/widgets/qtoolbox.cpp
@@ -111,7 +111,7 @@ public:
     void _q_buttonClicked();
     void _q_widgetDestroyed(QObject*);
 
-    Page *page(QWidget *widget) const;
+    const Page *page(QWidget *widget) const;
     const Page *page(int index) const;
     Page *page(int index);
 
@@ -123,14 +123,14 @@ public:
     Page *currentPage;
 };
 
-QToolBoxPrivate::Page *QToolBoxPrivate::page(QWidget *widget) const
+const QToolBoxPrivate::Page *QToolBoxPrivate::page(QWidget *widget) const
 {
     if (!widget)
         return 0;
 
     for (PageList::ConstIterator i = pageList.constBegin(); i != pageList.constEnd(); ++i)
         if ((*i).widget == widget)
-            return (Page*) &(*i);
+            return (const Page*) &(*i);
     return 0;
 }
 
@@ -448,7 +448,7 @@ void QToolBoxPrivate::_q_widgetDestroyed(QObject *object)
     // no verification - vtbl corrupted already
     QWidget *p = (QWidget*)object;
 
-    QToolBoxPrivate::Page *c = page(p);
+    const QToolBoxPrivate::Page *c = page(p);
     if (!p || !c)
         return;
 
@@ -550,7 +550,7 @@ QWidget *QToolBox::widget(int index) const
 int QToolBox::indexOf(QWidget *widget) const
 {
     Q_D(const QToolBox);
-    QToolBoxPrivate::Page *c = (widget ? d->page(widget) : 0);
+    const QToolBoxPrivate::Page *c = (widget ? d->page(widget) : 0);
     return c ? d->pageList.indexOf(*c) : -1;
 }