winrt platform plugin: Fix clang warnings

Fixed warnings:
  - missing override specifier
  - 0 as nullptr constant
  - implicit change of signedness
  - non portable path to header file

Change-Id: I6977bc561176ac7804ac01325b84c15ba849bbf2
Reviewed-by: Miguel Costa <miguel.costa@qt.io>
Reviewed-by: Andre de la Rocha <andre.rocha@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 3 insertions, 2 deletions

diff --git a/src/plugins/platforms/winrt/qwinrtclipboard.cpp b/src/plugins/platforms/winrt/qwinrtclipboard.cpp
index 05c34b82f8..fd0ed8aed2 100644
--- a/src/plugins/platforms/winrt/qwinrtclipboard.cpp
+++ b/src/plugins/platforms/winrt/qwinrtclipboard.cpp
@@ -99,7 +99,7 @@ QMimeData *QWinRTClipboard::mimeData(QClipboard::Mode mode)
 
     quint32 size;
     const wchar_t *textStr = result.GetRawBuffer(&size);
-    QString text = QString::fromWCharArray(textStr, size);
+    QString text = QString::fromWCharArray(textStr, int(size));
     text.replace(QLatin1String("\r\n"), QLatin1String("\n"));
 
     if (m_mimeData) {
@@ -161,7 +161,8 @@ void QWinRTClipboard::setMimeData(QMimeData *data, QClipboard::Mode mode)
                                 &package);
 
         const QString nativeString = convertToWindowsLineEnding(text);
-        HStringReference textRef(reinterpret_cast<LPCWSTR>(nativeString.utf16()), nativeString.length());
+        HStringReference textRef(reinterpret_cast<LPCWSTR>(nativeString.utf16()),
+                                 uint(nativeString.length()));
 
         hr = package->SetText(textRef.Get());
         RETURN_HR_IF_FAILED("Could not set text to clipboard data package.");