Revamp Subscription example: Cretae QString using a Literal operator

Create QString at compile time using the literal operator""s instead of
using pointer to characters. This way, no conversion or allocation will
occur at runtime.

Task-number: QTBUG-117425
Pick-to: 6.6 6.5
Change-Id: I2a19d4fe1150aad7908d0c2a7215099bc0814e8d
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>

1 files changed, 10 insertions, 8 deletions

diff --git a/examples/corelib/bindableproperties/subscription/main.cpp b/examples/corelib/bindableproperties/subscription/main.cpp
index 3c57bd6dc9..3f98da7467 100644
--- a/examples/corelib/bindableproperties/subscription/main.cpp
+++ b/examples/corelib/bindableproperties/subscription/main.cpp
@@ -13,6 +13,8 @@
 #include <QSpinBox>
 #include <QString>
 
+using namespace Qt::StringLiterals;
+
 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
@@ -25,40 +27,40 @@ int main(int argc, char *argv[])
     SubscriptionWindow w;
 
     // Initialize subscription data
-    QRadioButton *monthly = w.findChild<QRadioButton *>("btnMonthly");
+    QRadioButton *monthly = w.findChild<QRadioButton *>(u"btnMonthly"_s);
     QObject::connect(monthly, &QRadioButton::clicked, &subscription, [&] {
         subscription.setDuration(Subscription::Monthly);
     });
-    QRadioButton *quarterly = w.findChild<QRadioButton *>("btnQuarterly");
+    QRadioButton *quarterly = w.findChild<QRadioButton *>(u"btnQuarterly"_s);
     QObject::connect(quarterly, &QRadioButton::clicked, &subscription, [&] {
         subscription.setDuration(Subscription::Quarterly);
     });
-    QRadioButton *yearly = w.findChild<QRadioButton *>("btnYearly");
+    QRadioButton *yearly = w.findChild<QRadioButton *>(u"btnYearly"_s);
     QObject::connect(yearly, &QRadioButton::clicked, &subscription, [&] {
         subscription.setDuration(Subscription::Yearly);
     });
 
     // Initialize user data
-    QPushButton *germany = w.findChild<QPushButton *>("btnGermany");
+    QPushButton *germany = w.findChild<QPushButton *>(u"btnGermany"_s);
     QObject::connect(germany, &QPushButton::clicked, &user, [&] {
         user.setCountry(User::Country::Germany);
     });
-    QPushButton *finland = w.findChild<QPushButton *>("btnFinland");
+    QPushButton *finland = w.findChild<QPushButton *>(u"btnFinland"_s);
     QObject::connect(finland, &QPushButton::clicked, &user, [&] {
         user.setCountry(User::Country::Finland);
     });
-    QPushButton *norway = w.findChild<QPushButton *>("btnNorway");
+    QPushButton *norway = w.findChild<QPushButton *>(u"btnNorway"_s);
     QObject::connect(norway, &QPushButton::clicked, &user, [&] {
         user.setCountry(User::Country::Norway);
     });
 
-    QSpinBox *ageSpinBox = w.findChild<QSpinBox *>("ageSpinBox");
+    QSpinBox *ageSpinBox = w.findChild<QSpinBox *>(u"ageSpinBox"_s);
     QObject::connect(ageSpinBox, &QSpinBox::valueChanged, &user, [&](int value) {
         user.setAge(value);
     });
 
     // Initialize price data
-    QLabel *priceDisplay = w.findChild<QLabel *>("priceDisplay");
+    QLabel *priceDisplay = w.findChild<QLabel *>(u"priceDisplay"_s);
     priceDisplay->setText(QString::number(subscription.price()));
     priceDisplay->setEnabled(subscription.isValid());