Cleanup Itemviews examples

Cleanup the Itemviews examples
 - use nullptr instead 0
 - use for loop instead foreach
 - include own header first
 - remove uselss includes

Change-Id: I32e9f64356e42038707d063dcad977239ce1fe9e
Reviewed-by: Luca Beldi <v.ronin@yahoo.it>
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/examples/widgets/itemviews/coloreditorfactory/colorlisteditor.cpp b/examples/widgets/itemviews/coloreditorfactory/colorlisteditor.cpp
index 75d809a44f..0b65c53477 100644
--- a/examples/widgets/itemviews/coloreditorfactory/colorlisteditor.cpp
+++ b/examples/widgets/itemviews/coloreditorfactory/colorlisteditor.cpp
@@ -48,10 +48,10 @@
 **
 ****************************************************************************/
 
-#include <QtWidgets>
-
 #include "colorlisteditor.h"
 
+#include <QtWidgets>
+
 ColorListEditor::ColorListEditor(QWidget *widget) : QComboBox(widget)
 {
     populateList();
@@ -65,16 +65,16 @@ QColor ColorListEditor::color() const
 //! [0]
 
 //! [1]
-void ColorListEditor::setColor(QColor color)
+void ColorListEditor::setColor(const QColor &color)
 {
-    setCurrentIndex(findData(color, int(Qt::DecorationRole)));
+    setCurrentIndex(findData(color, Qt::DecorationRole));
 }
 //! [1]
 
 //! [2]
 void ColorListEditor::populateList()
 {
-    QStringList colorNames = QColor::colorNames();
+    const QStringList colorNames = QColor::colorNames();
 
     for (int i = 0; i < colorNames.size(); ++i) {
         QColor color(colorNames[i]);