Windows QPA: Fix warnings as shown by Qt Creator's Clang based code model.

Code except font, accessibility and file qwindowswindow.cpp.

Task-number: QTBUG-50804
Change-Id: I40848264f9fa16eea00cf70d7be009c484c49e92
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/plugins/platforms/windows/qwindowsbackingstore.cpp b/src/plugins/platforms/windows/qwindowsbackingstore.cpp
index af9d2a5969..a518c0bb83 100644
--- a/src/plugins/platforms/windows/qwindowsbackingstore.cpp
+++ b/src/plugins/platforms/windows/qwindowsbackingstore.cpp
@@ -93,7 +93,7 @@ void QWindowsBackingStore::flush(QWindow *window, const QRegion &region,
         SIZE size = {r.width(), r.height()};
         POINT ptDst = {r.x(), r.y()};
         POINT ptSrc = {0, 0};
-        BLENDFUNCTION blend = {AC_SRC_OVER, 0, (BYTE)(255.0 * rw->opacity()), AC_SRC_ALPHA};
+        BLENDFUNCTION blend = {AC_SRC_OVER, 0, BYTE(qRound(255.0 * rw->opacity())), AC_SRC_ALPHA};
         if (QWindowsContext::user32dll.updateLayeredWindowIndirect) {
             RECT dirty = {dirtyRect.x(), dirtyRect.y(),
                 dirtyRect.x() + dirtyRect.width(), dirtyRect.y() + dirtyRect.height()};
@@ -119,7 +119,7 @@ void QWindowsBackingStore::flush(QWindow *window, const QRegion &region,
                     m_image->hdc(), br.x() + offset.x(), br.y() + offset.y(), SRCCOPY)) {
             const DWORD lastError = GetLastError(); // QTBUG-35926, QTBUG-29716: may fail after lock screen.
             if (lastError != ERROR_SUCCESS && lastError != ERROR_INVALID_HANDLE)
-                qErrnoWarning(lastError, "%s: BitBlt failed", __FUNCTION__);
+                qErrnoWarning(int(lastError), "%s: BitBlt failed", __FUNCTION__);
         }
         rw->releaseDC();
 #ifndef Q_OS_WINCE