Polish DnD Examples.

- Remove class DragLabel in draggabletext and add a static creation
  function instead since it only has a constructor setting some
  properties.
- Use QRegularExpression instead of QRegExp
- Use new connection syntax.
- Ensure compilation with
  DEFINES += QT_NO_CAST_TO_ASCII QT_NO_CAST_FROM_ASCII
  demonstrating use of QLatin1String vs QStringLiteral.
- Streamline code.

Change-Id: I2e2ddeb40837dba379990836c77fb72ad7263e2d
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/examples/widgets/draganddrop/dropsite/droparea.cpp b/examples/widgets/draganddrop/dropsite/droparea.cpp
index d3d2bb10ca..0016434cc3 100644
--- a/examples/widgets/draganddrop/dropsite/droparea.cpp
+++ b/examples/widgets/draganddrop/dropsite/droparea.cpp
@@ -92,10 +92,8 @@ void DropArea::dropEvent(QDropEvent *event)
     } else if (mimeData->hasUrls()) {
         QList<QUrl> urlList = mimeData->urls();
         QString text;
-        for (int i = 0; i < urlList.size() && i < 32; ++i) {
-            QString url = urlList.at(i).path();
-            text += url + QString("\n");
-        }
+        for (int i = 0; i < urlList.size() && i < 32; ++i)
+            text += urlList.at(i).path() + QLatin1Char('\n');
         setText(text);
     } else {
         setText(tr("Cannot display data"));