Cleanup QtWidgets examples

Cleanup QtWidgets examples:
 - use nullptr (clang-tidy)
 - use member-initialization
 - adjust the style
 - fix includes

Change-Id: Ic5448606aacc525ea60b615a69227017aa2b821a
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 5 insertions, 4 deletions

diff --git a/examples/widgets/itemviews/stardelegate/main.cpp b/examples/widgets/itemviews/stardelegate/main.cpp
index 452976bba0..5ca85a6151 100644
--- a/examples/widgets/itemviews/stardelegate/main.cpp
+++ b/examples/widgets/itemviews/stardelegate/main.cpp
@@ -48,7 +48,8 @@
 **
 ****************************************************************************/
 
-#include <QtWidgets>
+#include <QApplication>
+#include <QTableWidget>
 
 #include "stardelegate.h"
 #include "stareditor.h"
@@ -57,7 +58,7 @@
 //! [0]
 void populateTableWidget(QTableWidget *tableWidget)
 {
-    static const struct {
+    static constexpr struct {
         const char *title;
         const char *genre;
         const char *artist;
@@ -70,12 +71,12 @@ void populateTableWidget(QTableWidget *tableWidget)
         { "Sex Bomb", "Pop", "Tom Jones", 3 },
         { "Barbie Girl", "Pop", "Aqua", 5 },
 //! [2]
-        { 0, 0, 0, 0 }
+        { nullptr, nullptr, nullptr, 0 }
 //! [2] //! [3]
     };
 //! [3] //! [4]
 
-    for (int row = 0; staticData[row].title != 0; ++row) {
+    for (int row = 0; staticData[row].title != nullptr; ++row) {
         QTableWidgetItem *item0 = new QTableWidgetItem(staticData[row].title);
         QTableWidgetItem *item1 = new QTableWidgetItem(staticData[row].genre);
         QTableWidgetItem *item2 = new QTableWidgetItem(staticData[row].artist);