Fix qclipboard autotest on Windows.

Emit changed signal only if the clipboard is not owned,
in which case QClipboard does it.

Task-number: QTBUG-24184
Change-Id: I27420583a718a5f8cd93b9d361b1e422a75df300
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/src/plugins/platforms/windows/qwindowsclipboard.cpp b/src/plugins/platforms/windows/qwindowsclipboard.cpp
index c1167ccf3a..4f083e93d2 100644
--- a/src/plugins/platforms/windows/qwindowsclipboard.cpp
+++ b/src/plugins/platforms/windows/qwindowsclipboard.cpp
@@ -283,14 +283,17 @@ bool QWindowsClipboard::clipboardViewerWndProc(HWND hwnd, UINT message, WPARAM w
         }
     }
         return true;
-    case WM_DRAWCLIPBOARD:
+    case WM_DRAWCLIPBOARD: {
+        const bool owned = ownsClipboard();
         if (QWindowsContext::verboseOLE)
-            qDebug("Clipboard changed");
-        emitChanged(QClipboard::Clipboard);
+            qDebug("Clipboard changed owned %d", owned);
+        if (!owned) // changed is emitted by QClipboard in that case.
+            emitChanged(QClipboard::Clipboard);
         // clean up the clipboard object if we no longer own the clipboard
-        if (!ownsClipboard() && m_data)
+        if (!owned && m_data)
             releaseIData();
         propagateClipboardMessage(message, wParam, lParam);
+    }
         return true;
     case WM_DESTROY:
         // Recommended shutdown