remove unused uno::Reference vars

found by temporarily marking Reference as SAL_WARN_UNUSED.

Change-Id: I18809b62654467f890016adcc92576980ced393b
Reviewed-on: https://gerrit.libreoffice.org/37511
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

17 files changed, 36 insertions, 68 deletions

diff --git a/sc/source/core/data/globalx.cxx b/sc/source/core/data/globalx.cxx
index 9a558ae458c0..5b60bf912094 100644
--- a/sc/source/core/data/globalx.cxx
+++ b/sc/source/core/data/globalx.cxx
@@ -86,9 +86,7 @@ void ScGlobal::InitAddIns()
 
             if ( xResultSet.is() )
             {
-                Reference< sdbc::XRow > xRow( xResultSet, UNO_QUERY );
-                Reference< XContentAccess >
-                    xContentAccess( xResultSet, UNO_QUERY );
+                Reference< XContentAccess > xContentAccess( xResultSet, UNO_QUERY );
                 try
                 {
                     if ( xResultSet->first() )
diff --git a/sc/source/filter/oox/workbookfragment.cxx b/sc/source/filter/oox/workbookfragment.cxx
index 92c83e06aaa3..72d2985e536f 100644
--- a/sc/source/filter/oox/workbookfragment.cxx
+++ b/sc/source/filter/oox/workbookfragment.cxx
@@ -310,8 +310,6 @@ void importSheetFragments( WorkbookFragment& rWorkbookHandler, SheetFragmentVect
 {
     rWorkbookHandler.getDocImport().initForSheets();
 
-    Reference< XComponentContext > xContext = comphelper::getProcessComponentContext();
-
     // test sequential read in this mode
     comphelper::ThreadPool &rSharedPool = comphelper::ThreadPool::getSharedOptimalPool();
     std::shared_ptr<comphelper::ThreadTaskTag> pTag = comphelper::ThreadPool::createThreadTaskTag();
diff --git a/sc/source/ui/app/seltrans.cxx b/sc/source/ui/app/seltrans.cxx
index ed181469bd70..9fcbf4aaec8a 100644
--- a/sc/source/ui/app/seltrans.cxx
+++ b/sc/source/ui/app/seltrans.cxx
@@ -285,8 +285,7 @@ void ScSelectionTransferObj::CreateCellData()
                 aObjDesc.maDisplayName = pDocSh->GetMedium()->GetURLObject().GetURLNoPass();
                 // maSize is set in ScTransferObj ctor
 
-                ScTransferObj* pTransferObj = new ScTransferObj( pClipDoc, aObjDesc );
-                uno::Reference<datatransfer::XTransferable> xTransferable( pTransferObj );
+                rtl::Reference<ScTransferObj> pTransferObj = new ScTransferObj( pClipDoc, aObjDesc );
 
                 // SetDragHandlePos is not used - there is no mouse position
                 //? pTransferObj->SetVisibleTab( nTab );
@@ -338,8 +337,7 @@ void ScSelectionTransferObj::CreateDrawData()
             aObjDesc.maDisplayName = pDocSh->GetMedium()->GetURLObject().GetURLNoPass();
             // maSize is set in ScDrawTransferObj ctor
 
-            ScDrawTransferObj* pTransferObj = new ScDrawTransferObj( pModel, pDocSh, aObjDesc );
-            uno::Reference<datatransfer::XTransferable> xTransferable( pTransferObj );
+            rtl::Reference<ScDrawTransferObj> pTransferObj = new ScDrawTransferObj( pModel, pDocSh, aObjDesc );
 
             SfxObjectShellRef aPersistRef( aDragShellRef.get() );
             pTransferObj->SetDrawPersist( aPersistRef );    // keep persist for ole objects alive
diff --git a/sc/source/ui/docshell/dbdocimp.cxx b/sc/source/ui/docshell/dbdocimp.cxx
index 69ffd28bc62e..b261e56b60c1 100644
--- a/sc/source/ui/docshell/dbdocimp.cxx
+++ b/sc/source/ui/docshell/dbdocimp.cxx
@@ -73,7 +73,6 @@ void ScDBDocFunc::ShowInBeamer( const ScImportParam& rParam, SfxViewFrame* pFram
         return;
 
     uno::Reference<frame::XFrame> xFrame = pFrame->GetFrame().GetFrameInterface();
-    uno::Reference<frame::XDispatchProvider> xDP(xFrame, uno::UNO_QUERY);
 
     uno::Reference<frame::XFrame> xBeamerFrame = xFrame->findFrame(
                                         "_beamer",
diff --git a/sc/source/ui/navipi/content.cxx b/sc/source/ui/navipi/content.cxx
index 8fd837c3c5b5..ec66b99e073b 100644
--- a/sc/source/ui/navipi/content.cxx
+++ b/sc/source/ui/navipi/content.cxx
@@ -1267,13 +1267,12 @@ static void lcl_DoDragObject( ScDocShell* pSrcShell, const OUString& rName, ScCo
             aObjDesc.maDisplayName = pSrcShell->GetMedium()->GetURLObject().GetURLNoPass();
             // maSize is set in ScDrawTransferObj ctor
 
-            ScDrawTransferObj* pTransferObj = new ScDrawTransferObj( pDragModel, pSrcShell, aObjDesc );
-            uno::Reference<datatransfer::XTransferable> xTransferable( pTransferObj );
+            rtl::Reference<ScDrawTransferObj> pTransferObj = new ScDrawTransferObj( pDragModel, pSrcShell, aObjDesc );
 
             pTransferObj->SetDragSourceObj( pObject, nTab );
             pTransferObj->SetDragSourceFlags(ScDragSrc::Navigator);
 
-            SC_MOD()->SetDragObject( nullptr, pTransferObj );
+            SC_MOD()->SetDragObject( nullptr, pTransferObj.get() );
             pWin->ReleaseMouse();
             pTransferObj->StartDrag( pWin, DND_ACTION_COPYMOVE | DND_ACTION_LINK );
         }
@@ -1301,13 +1300,12 @@ static void lcl_DoDragCells( ScDocShell* pSrcShell, const ScRange& rRange, ScDra
         aObjDesc.maDisplayName = pSrcShell->GetMedium()->GetURLObject().GetURLNoPass();
         // maSize is set in ScTransferObj ctor
 
-        ScTransferObj* pTransferObj = new ScTransferObj( pClipDoc, aObjDesc );
-        uno::Reference<datatransfer::XTransferable> xTransferable( pTransferObj );
+        rtl::Reference<ScTransferObj> pTransferObj = new ScTransferObj( pClipDoc, aObjDesc );
 
         pTransferObj->SetDragSource( pSrcShell, aMark );
         pTransferObj->SetDragSourceFlags( nFlags );
 
-        SC_MOD()->SetDragObject( pTransferObj, nullptr );      // for internal D&D
+        SC_MOD()->SetDragObject( pTransferObj.get(), nullptr );      // for internal D&D
         pWin->ReleaseMouse();
         pTransferObj->StartDrag( pWin, DND_ACTION_COPYMOVE | DND_ACTION_LINK );
     }
@@ -1446,8 +1444,7 @@ void ScContentTree::DoDrag()
 
         if (bDoLinkTrans)
         {
-            ScLinkTransferObj* pTransferObj = new ScLinkTransferObj;
-            uno::Reference<datatransfer::XTransferable> xTransferable( pTransferObj );
+            rtl::Reference<ScLinkTransferObj> pTransferObj = new ScLinkTransferObj;
 
             if ( !aLinkURL.isEmpty() )
                 pTransferObj->SetLinkURL( aLinkURL, aLinkText );
diff --git a/sc/source/ui/undo/undoblk.cxx b/sc/source/ui/undo/undoblk.cxx
index 1141e75655b7..291151d11a6d 100644
--- a/sc/source/ui/undo/undoblk.cxx
+++ b/sc/source/ui/undo/undoblk.cxx
@@ -1080,11 +1080,10 @@ void ScUndoPaste::Repeat(SfxRepeatTarget& rTarget)
     if (dynamic_cast<const ScTabViewTarget*>( &rTarget) !=  nullptr)
     {
         ScTabViewShell* pViewSh = static_cast<ScTabViewTarget&>(rTarget).GetViewShell();
-        ScTransferObj* pOwnClip = ScTransferObj::GetOwnClipboard( pViewSh->GetActiveWin() );
+        // keep a reference in case the clipboard is changed during PasteFromClip
+        rtl::Reference<ScTransferObj> pOwnClip = ScTransferObj::GetOwnClipboard( pViewSh->GetActiveWin() );
         if (pOwnClip)
         {
-            // keep a reference in case the clipboard is changed during PasteFromClip
-            css::uno::Reference<css::datatransfer::XTransferable> aOwnClipRef( pOwnClip );
             pViewSh->PasteFromClip( nFlags, pOwnClip->GetDocument(),
                                     aPasteOptions.nFunction, aPasteOptions.bSkipEmpty, aPasteOptions.bTranspose,
                                     aPasteOptions.bAsLink, aPasteOptions.eMoveMode, InsertDeleteFlags::NONE,
diff --git a/sc/source/ui/unoobj/PivotTableDataProvider.cxx b/sc/source/ui/unoobj/PivotTableDataProvider.cxx
index f02b1361109f..ce7844e6ee7c 100644
--- a/sc/source/ui/unoobj/PivotTableDataProvider.cxx
+++ b/sc/source/ui/unoobj/PivotTableDataProvider.cxx
@@ -331,7 +331,6 @@ void PivotTableDataProvider::collectPivotTableData()
     {
         uno::Reference<uno::XInterface> xDim = ScUnoHelpFunctions::AnyToInterface(xDims->getByIndex(nDim));
         uno::Reference<beans::XPropertySet> xDimProp(xDim, uno::UNO_QUERY);
-        uno::Reference<container::XNamed> xDimName(xDim, uno::UNO_QUERY);
         uno::Reference<sheet::XHierarchiesSupplier> xDimSupp(xDim, uno::UNO_QUERY);
 
         if (!xDimProp.is() || !xDimSupp.is())
diff --git a/sc/source/ui/unoobj/shapeuno.cxx b/sc/source/ui/unoobj/shapeuno.cxx
index 36a33957c118..ba0de26e515c 100644
--- a/sc/source/ui/unoobj/shapeuno.cxx
+++ b/sc/source/ui/unoobj/shapeuno.cxx
@@ -777,7 +777,6 @@ uno::Any SAL_CALL ScShapeObj::getPropertyValue( const OUString& aPropertyName )
                         uno::Reference<drawing::XShape> xShape( mxShapeAgg, uno::UNO_QUERY );
                         if (xShape.is())
                         {
-                            uno::Reference< uno::XInterface > xAnchor;
                             if (ScDrawLayer::GetAnchorType(*pObj) == SCA_CELL)
                             {
                                 awt::Size aUnoSize;
diff --git a/sc/source/ui/vba/vbaapplication.cxx b/sc/source/ui/vba/vbaapplication.cxx
index 5c500d62f137..a1471475d540 100644
--- a/sc/source/ui/vba/vbaapplication.cxx
+++ b/sc/source/ui/vba/vbaapplication.cxx
@@ -553,7 +553,6 @@ ScVbaApplication::GoTo( const uno::Any& Reference, const uno::Any& Scroll )
         uno::Reference< frame::XModel > xModel( getCurrentDocument(), uno::UNO_QUERY_THROW );
         uno::Reference< sheet::XSpreadsheetView > xSpreadsheet(
                 xModel->getCurrentController(), uno::UNO_QUERY_THROW );
-        uno::Reference< sheet::XSpreadsheet > xDoc = xSpreadsheet->getActiveSheet();
 
         ScTabViewShell* pShell = excel::getCurrentBestViewShell( mxContext );
         ScGridWindow* gridWindow = static_cast<ScGridWindow*>(pShell->GetWindow());
diff --git a/sc/source/ui/vba/vbarange.cxx b/sc/source/ui/vba/vbarange.cxx
index 8f715d6b8d54..4e3352b79edd 100644
--- a/sc/source/ui/vba/vbarange.cxx
+++ b/sc/source/ui/vba/vbarange.cxx
@@ -4239,8 +4239,7 @@ ScVbaRange::ApplicationRange( const uno::Reference< uno::XComponentContext >& xC
         return uno::Reference<excel::XRange>();
     }
 
-    ScVbaRange* pRange = new ScVbaRange( excel::getUnoSheetModuleObj( xSheetRange ), xContext, xSheetRange );
-    uno::Reference< excel::XRange > xVbSheetRange( pRange );
+    rtl::Reference<ScVbaRange> pRange = new ScVbaRange( excel::getUnoSheetModuleObj( xSheetRange ), xContext, xSheetRange );
     return pRange->Range( Cell1, Cell2, true );
 }
 
@@ -4385,7 +4384,6 @@ ScVbaRange::AutoFilter( const uno::Any& aField, const uno::Any& Criteria1, const
     if ( xDataBaseRange.is() )
         bHasAuto = true;
 
-    uno::Reference< table::XCellRange > xFilterRange;
     if ( !bHasAuto )
     {
         if (  m_Areas->getCount() > 1 )
@@ -5221,7 +5219,6 @@ ScVbaRange::Merge( const uno::Any& Across )
         }
         return;
     }
-    uno::Reference< table::XCellRange > oCellRange;
     bool bAcross = false;
     Across >>= bAcross;
     if ( !bAcross )
@@ -5451,7 +5448,6 @@ ScVbaRange::SpecialCellsImpl( sal_Int32 nType, const uno::Any& _oValue)
     try
     {
         uno::Reference< sheet::XCellRangesQuery > xQuery( mxRange, uno::UNO_QUERY_THROW );
-        uno::Reference< excel::XRange > oLocRangeImpl;
         uno::Reference< sheet::XSheetCellRanges > xLocSheetCellRanges;
         switch(nType)
         {
diff --git a/sc/source/ui/view/cellsh1.cxx b/sc/source/ui/view/cellsh1.cxx
index ce3fe707a663..c4a580f9be4c 100644
--- a/sc/source/ui/view/cellsh1.cxx
+++ b/sc/source/ui/view/cellsh1.cxx
@@ -1335,15 +1335,14 @@ void ScCellShell::ExecuteEdit( SfxRequest& rReq )
                 vcl::Window* pWin = GetViewData()->GetActiveWin();
                 ScDocument* pDoc = GetViewData()->GetDocument();
                 bool bOtherDoc = !pDoc->IsClipboardSource();
-                ScTransferObj* pOwnClip = ScTransferObj::GetOwnClipboard( pWin );
+                // keep a reference in case the clipboard is changed during dialog or PasteFromClip
+                rtl::Reference<ScTransferObj> pOwnClip = ScTransferObj::GetOwnClipboard( pWin );
                 if ( pOwnClip )
                 {
                     bool bSkipEmpty = false;
                     bool bTranspose = false;
                     bool bAsLink    = false;
 
-                    // keep a reference in case the clipboard is changed during dialog or PasteFromClip
-                    uno::Reference<datatransfer::XTransferable> aOwnClipRef( pOwnClip );
                     if ( pReqArgs!=nullptr && pTabViewShell->SelectionEditable() )
                     {
                         const   SfxPoolItem* pItem;
diff --git a/sc/source/ui/view/drawvie4.cxx b/sc/source/ui/view/drawvie4.cxx
index 18a82ae2ed00..5a5ac3de2b23 100644
--- a/sc/source/ui/view/drawvie4.cxx
+++ b/sc/source/ui/view/drawvie4.cxx
@@ -123,13 +123,12 @@ void ScDrawView::BeginDrag( vcl::Window* pWindow, const Point& rStartPos )
         aObjDesc.maDisplayName = pDocSh->GetMedium()->GetURLObject().GetURLNoPass();
         // maSize is set in ScDrawTransferObj ctor
 
-        ScDrawTransferObj* pTransferObj = new ScDrawTransferObj( pModel, pDocSh, aObjDesc );
-        uno::Reference<datatransfer::XTransferable> xTransferable( pTransferObj );
+        rtl::Reference<ScDrawTransferObj> pTransferObj = new ScDrawTransferObj( pModel, pDocSh, aObjDesc );
 
         pTransferObj->SetDrawPersist( aDragShellRef.get() );    // keep persist for ole objects alive
         pTransferObj->SetDragSource( this );               // copies selection
 
-        SC_MOD()->SetDragObject( nullptr, pTransferObj );     // for internal D&D
+        SC_MOD()->SetDragObject( nullptr, pTransferObj.get() );     // for internal D&D
         pTransferObj->StartDrag( pWindow, DND_ACTION_COPYMOVE | DND_ACTION_LINK );
     }
 }
@@ -379,8 +378,7 @@ void ScDrawView::DoCopy()
     aObjDesc.maDisplayName = pDocSh->GetMedium()->GetURLObject().GetURLNoPass();
     // maSize is set in ScDrawTransferObj ctor
 
-    ScDrawTransferObj* pTransferObj = new ScDrawTransferObj( pModel, pDocSh, aObjDesc );
-    uno::Reference<datatransfer::XTransferable> xTransferable( pTransferObj );
+    rtl::Reference<ScDrawTransferObj> pTransferObj = new ScDrawTransferObj( pModel, pDocSh, aObjDesc );
 
     if ( ScGlobal::xDrawClipDocShellRef.is() )
     {
@@ -388,7 +386,7 @@ void ScDrawView::DoCopy()
     }
 
     pTransferObj->CopyToClipboard( pViewData->GetActiveWin() );     // system clipboard
-    SC_MOD()->SetClipObject( nullptr, pTransferObj );                  // internal clipboard
+    SC_MOD()->SetClipObject( nullptr, pTransferObj.get() );                  // internal clipboard
 }
 
 uno::Reference<datatransfer::XTransferable> ScDrawView::CopyToTransferable()
diff --git a/sc/source/ui/view/gridwin.cxx b/sc/source/ui/view/gridwin.cxx
index 9255837a9e3f..95ffc0e67ba5 100644
--- a/sc/source/ui/view/gridwin.cxx
+++ b/sc/source/ui/view/gridwin.cxx
@@ -4333,21 +4333,18 @@ void ScGridWindow::PasteSelection( const Point& rPosPixel )
     {
         //  within Calc
 
-        ScTransferObj* pCellTransfer = pOwnSelection->GetCellData();
+        // keep a reference to the data in case the selection is changed during paste
+        rtl::Reference<ScTransferObj> pCellTransfer = pOwnSelection->GetCellData();
         if ( pCellTransfer )
         {
-            // keep a reference to the data in case the selection is changed during paste
-            uno::Reference<datatransfer::XTransferable> xRef( pCellTransfer );
-            DropTransferObj( pCellTransfer, nPosX, nPosY, aLogicPos, DND_ACTION_COPY );
+            DropTransferObj( pCellTransfer.get(), nPosX, nPosY, aLogicPos, DND_ACTION_COPY );
         }
         else
         {
-            ScDrawTransferObj* pDrawTransfer = pOwnSelection->GetDrawData();
+            // keep a reference to the data in case the selection is changed during paste
+            rtl::Reference<ScDrawTransferObj> pDrawTransfer = pOwnSelection->GetDrawData();
             if ( pDrawTransfer )
             {
-                // keep a reference to the data in case the selection is changed during paste
-                uno::Reference<datatransfer::XTransferable> xRef( pDrawTransfer );
-
                 //  bSameDocClipboard argument for PasteDraw is needed
                 //  because only DragData is checked directly inside PasteDraw
                 pViewData->GetView()->PasteDraw(
diff --git a/sc/source/ui/view/select.cxx b/sc/source/ui/view/select.cxx
index 8fd89540a1ff..1579bcc82e6d 100644
--- a/sc/source/ui/view/select.cxx
+++ b/sc/source/ui/view/select.cxx
@@ -184,8 +184,7 @@ void ScViewFunctionSet::BeginDrag()
                 aObjDesc.maDisplayName = pDocSh->GetMedium()->GetURLObject().GetURLNoPass();
                 // maSize is set in ScTransferObj ctor
 
-                ScTransferObj* pTransferObj = new ScTransferObj( pClipDoc, aObjDesc );
-                uno::Reference<datatransfer::XTransferable> xTransferable( pTransferObj );
+                rtl::Reference<ScTransferObj> pTransferObj = new ScTransferObj( pClipDoc, aObjDesc );
 
                 // set position of dragged cell within range
                 ScRange aMarkRange = pTransferObj->GetRange();
@@ -203,7 +202,7 @@ void ScViewFunctionSet::BeginDrag()
                 if ( pWindow->IsTracking() )
                     pWindow->EndTracking( TrackingEventFlags::Cancel );    // abort selecting
 
-                SC_MOD()->SetDragObject( pTransferObj, nullptr );      // for internal D&D
+                SC_MOD()->SetDragObject( pTransferObj.get(), nullptr );      // for internal D&D
                 pTransferObj->StartDrag( pWindow, nDragActions );
 
                 return;         // dragging started
diff --git a/sc/source/ui/view/tabcont.cxx b/sc/source/ui/view/tabcont.cxx
index 8534373ba48b..88143e9ac594 100644
--- a/sc/source/ui/view/tabcont.cxx
+++ b/sc/source/ui/view/tabcont.cxx
@@ -488,8 +488,7 @@ void ScTabControl::DoDrag( const vcl::Region& /* rRegion */ )
     aObjDesc.maDisplayName = pDocSh->GetMedium()->GetURLObject().GetURLNoPass();
     // maSize is set in ScTransferObj ctor
 
-    ScTransferObj* pTransferObj = new ScTransferObj( pClipDoc, aObjDesc );
-    css::uno::Reference<css::datatransfer::XTransferable> xTransferable( pTransferObj );
+    rtl::Reference<ScTransferObj> pTransferObj = new ScTransferObj( pClipDoc, aObjDesc );
 
     pTransferObj->SetDragSourceFlags(ScDragSrc::Table);
 
@@ -498,7 +497,7 @@ void ScTabControl::DoDrag( const vcl::Region& /* rRegion */ )
     pTransferObj->SetSourceCursorPos( pViewData->GetCurX(), pViewData->GetCurY() );
 
     vcl::Window* pWindow = pViewData->GetActiveWin();
-    SC_MOD()->SetDragObject( pTransferObj, nullptr );      // for internal D&D
+    SC_MOD()->SetDragObject( pTransferObj.get(), nullptr );      // for internal D&D
     pTransferObj->StartDrag( pWindow, DND_ACTION_COPYMOVE | DND_ACTION_LINK );
 }
 
diff --git a/sc/source/ui/view/tabview3.cxx b/sc/source/ui/view/tabview3.cxx
index 6a1087c6b135..f789a34021e5 100644
--- a/sc/source/ui/view/tabview3.cxx
+++ b/sc/source/ui/view/tabview3.cxx
@@ -418,7 +418,7 @@ void ScTabView::CheckSelectionTransfer()
     {
         ScModule* pScMod = SC_MOD();
         ScSelectionTransferObj* pOld = pScMod->GetSelectionTransfer();
-        ScSelectionTransferObj* pNew = ScSelectionTransferObj::CreateFromView( this );
+        rtl::Reference<ScSelectionTransferObj> pNew = ScSelectionTransferObj::CreateFromView( this );
         if ( pNew )
         {
             //  create new selection
@@ -426,8 +426,7 @@ void ScTabView::CheckSelectionTransfer()
             if (pOld)
                 pOld->ForgetView();
 
-            uno::Reference<datatransfer::XTransferable> xRef( pNew );
-            pScMod->SetSelectionTransfer( pNew );
+            pScMod->SetSelectionTransfer( pNew.get() );
             pNew->CopyToSelection( GetActiveWin() );                    // may delete pOld
         }
         else if ( pOld && pOld->GetView() == this )
diff --git a/sc/source/ui/view/viewfun3.cxx b/sc/source/ui/view/viewfun3.cxx
index 67bef8e7db04..e5a630d7a708 100644
--- a/sc/source/ui/view/viewfun3.cxx
+++ b/sc/source/ui/view/viewfun3.cxx
@@ -269,8 +269,7 @@ bool ScViewFunc::CopyToClip( ScDocument* pClipDoc, const ScRangeList& rRanges, b
                 aObjDesc.maDisplayName = pDocSh->GetMedium()->GetURLObject().GetURLNoPass();
                 // maSize is set in ScTransferObj ctor
 
-                ScTransferObj* pTransferObj = new ScTransferObj( pClipDoc, aObjDesc );
-                uno::Reference<datatransfer::XTransferable> xTransferable( pTransferObj );
+                rtl::Reference<ScTransferObj> pTransferObj = new ScTransferObj( pClipDoc, aObjDesc );
                 if ( ScGlobal::xDrawClipDocShellRef.is() )
                 {
                     SfxObjectShellRef aPersistRef( ScGlobal::xDrawClipDocShellRef.get() );
@@ -278,7 +277,7 @@ bool ScViewFunc::CopyToClip( ScDocument* pClipDoc, const ScRangeList& rRanges, b
 
                 }
                 pTransferObj->CopyToClipboard( GetActiveWin() );
-                SC_MOD()->SetClipObject( pTransferObj, nullptr );
+                SC_MOD()->SetClipObject( pTransferObj.get(), nullptr );
             }
 
             bDone = true;
@@ -377,8 +376,7 @@ bool ScViewFunc::CopyToClip( ScDocument* pClipDoc, const ScRangeList& rRanges, b
                 aObjDesc.maDisplayName = pDocSh->GetMedium()->GetURLObject().GetURLNoPass();
                 // maSize is set in ScTransferObj ctor
 
-                ScTransferObj* pTransferObj = new ScTransferObj( pDocClip.release(), aObjDesc );
-                uno::Reference<datatransfer::XTransferable> xTransferable( pTransferObj );
+                rtl::Reference<ScTransferObj> pTransferObj = new ScTransferObj( pDocClip.release(), aObjDesc );
 
                 if ( ScGlobal::xDrawClipDocShellRef.is() )
                 {
@@ -387,7 +385,7 @@ bool ScViewFunc::CopyToClip( ScDocument* pClipDoc, const ScRangeList& rRanges, b
                 }
 
                 pTransferObj->CopyToClipboard( GetActiveWin() );    // system clipboard
-                SC_MOD()->SetClipObject( pTransferObj, nullptr );      // internal clipboard
+                SC_MOD()->SetClipObject( pTransferObj.get(), nullptr );      // internal clipboard
             }
 
             bSuccess = true;
@@ -463,12 +461,10 @@ void ScViewFunc::PasteFromSystem()
 
     vcl::Window* pWin = GetActiveWin();
     ScTransferObj* pOwnClip = ScTransferObj::GetOwnClipboard( pWin );
-    ScDrawTransferObj* pDrawClip = ScDrawTransferObj::GetOwnClipboard();
-
+    // keep a reference in case the clipboard is changed during PasteFromClip
+    rtl::Reference<ScDrawTransferObj> pDrawClip = ScDrawTransferObj::GetOwnClipboard();
     if (pOwnClip)
     {
-        // keep a reference in case the clipboard is changed during PasteFromClip
-        uno::Reference<datatransfer::XTransferable> aOwnClipRef( pOwnClip );
         PasteFromClip( InsertDeleteFlags::ALL, pOwnClip->GetDocument(),
                         ScPasteFunc::NONE, false, false, false, INS_NONE, InsertDeleteFlags::NONE,
                         true );     // allow warning dialog
@@ -706,11 +702,10 @@ bool ScViewFunc::PasteFromSystem( SotClipboardFormatId nFormatId, bool bApi )
 
     bool bRet = true;
     vcl::Window* pWin = GetActiveWin();
-    ScTransferObj* pOwnClip = ScTransferObj::GetOwnClipboard( pWin );
+    // keep a reference in case the clipboard is changed during PasteFromClip
+    rtl::Reference<ScTransferObj> pOwnClip = ScTransferObj::GetOwnClipboard( pWin );
     if ( nFormatId == SotClipboardFormatId::NONE && pOwnClip )
     {
-        // keep a reference in case the clipboard is changed during PasteFromClip
-        uno::Reference<datatransfer::XTransferable> aOwnClipRef( pOwnClip );
         PasteFromClip( InsertDeleteFlags::ALL, pOwnClip->GetDocument(),
                         ScPasteFunc::NONE, false, false, false, INS_NONE, InsertDeleteFlags::NONE,
                         !bApi );        // allow warning dialog