Clean up aEmpty

Change-Id: I4c4294b7fb1cb537ba3ae3e6e7e747a3333b7469

42 files changed, 121 insertions, 179 deletions

diff --git a/basic/source/classes/sb.cxx b/basic/source/classes/sb.cxx
index 0fb82bfba764..2dc69d6a2c29 100644
--- a/basic/source/classes/sb.cxx
+++ b/basic/source/classes/sb.cxx
@@ -415,21 +415,20 @@ SbxBase* SbiFactory::Create( sal_uInt16 nSbxId, sal_uInt32 nCreator )
 {
     if( nCreator ==  SBXCR_SBX )
     {
-        OUString aEmpty;
         switch( nSbxId )
         {
         case SBXID_BASIC:
             return new StarBASIC( NULL );
         case SBXID_BASICMOD:
-            return new SbModule( aEmpty );
+            return new SbModule( "" );
         case SBXID_BASICPROP:
-            return new SbProperty( aEmpty, SbxVARIANT, NULL );
+            return new SbProperty( "", SbxVARIANT, NULL );
         case SBXID_BASICMETHOD:
-            return new SbMethod( aEmpty, SbxVARIANT, NULL );
+            return new SbMethod( "", SbxVARIANT, NULL );
         case SBXID_JSCRIPTMOD:
-            return new SbJScriptModule( aEmpty );
+            return new SbJScriptModule( "" );
         case SBXID_JSCRIPTMETH:
-            return new SbJScriptMethod( aEmpty, SbxVARIANT, NULL );
+            return new SbJScriptMethod( "", SbxVARIANT, NULL );
         }
     }
     return NULL;
diff --git a/cui/source/dialogs/hyphen.cxx b/cui/source/dialogs/hyphen.cxx
index 1f4185d26381..9b7dd37e194c 100644
--- a/cui/source/dialogs/hyphen.cxx
+++ b/cui/source/dialogs/hyphen.cxx
@@ -172,11 +172,10 @@ OUString SvxHyphenWordDialog::EraseUnusableHyphens_Impl()
         nPos = nIdx == -1 ? 0 : nIdx + 1;
         nPos1 = nPos;   //save for later use in 2) below
         const OUString aTmp( sal_Unicode( HYPH_POS_CHAR ) );
-        const OUString aEmpty;
         while (nPos != -1)
         {
             nPos++;
-            aTxt = aTxt.replaceFirst( aTmp, aEmpty, &nPos);
+            aTxt = aTxt.replaceFirst( aTmp, "", &nPos);
         }
 
         // 2) remove all hyphenation positions from the start that are not considered by the core
@@ -189,7 +188,7 @@ OUString SvxHyphenWordDialog::EraseUnusableHyphens_Impl()
             while (nPos != -1)
             {
                 nPos++;
-                aLeft = aLeft.replaceFirst( aTmp, aEmpty, &nPos );
+                aLeft = aLeft.replaceFirst( aTmp, "", &nPos );
                 if (nPos != -1)
                     ++m_nHyphenationPositionsOffset;
             }
diff --git a/cui/source/dialogs/linkdlg.cxx b/cui/source/dialogs/linkdlg.cxx
index 39a753e16b74..d59c11587c57 100644
--- a/cui/source/dialogs/linkdlg.cxx
+++ b/cui/source/dialogs/linkdlg.cxx
@@ -496,9 +496,8 @@ IMPL_LINK_NOARG_TYPED( SvBaseLinksDlg, BreakLinkClickHdl, Button*, void )
             m_pPbChangeSource->Disable();
             m_pPbBreakLink->Disable();
 
-            OUString aEmpty;
-            m_pFtFullSourceName->SetText( aEmpty );
-            m_pFtFullTypeName->SetText( aEmpty );
+            m_pFtFullSourceName->SetText( "" );
+            m_pFtFullTypeName->SetText( "" );
         }
         if( pLinkMgr && pLinkMgr->GetPersist() )
             pLinkMgr->GetPersist()->SetModified();
diff --git a/cui/source/dialogs/passwdomdlg.cxx b/cui/source/dialogs/passwdomdlg.cxx
index ab2285d68555..bd1b07b11d2e 100644
--- a/cui/source/dialogs/passwdomdlg.cxx
+++ b/cui/source/dialogs/passwdomdlg.cxx
@@ -117,18 +117,17 @@ IMPL_LINK_NOARG_TYPED( PasswordToOpenModifyDialog_Impl, OkBtnClickHdl, Button *,
 
             Edit* pEdit = !bToOpenMatch ? m_pPasswdToOpenED : m_pPasswdToModifyED;
             Edit* pRepeatEdit = !bToOpenMatch? m_pReenterPasswdToOpenED : m_pReenterPasswdToModifyED;
-            OUString aEmpty;
             if (nMismatch == 1)
             {
-                pEdit->SetText( aEmpty );
-                pRepeatEdit->SetText( aEmpty );
+                pEdit->SetText( "" );
+                pRepeatEdit->SetText( "" );
             }
             else if (nMismatch == 2)
             {
-                m_pPasswdToOpenED->SetText( aEmpty );
-                m_pReenterPasswdToOpenED->SetText( aEmpty );
-                m_pPasswdToModifyED->SetText( aEmpty );
-                m_pReenterPasswdToModifyED->SetText( aEmpty );
+                m_pPasswdToOpenED->SetText( "" );
+                m_pReenterPasswdToOpenED->SetText( "" );
+                m_pPasswdToModifyED->SetText( "" );
+                m_pReenterPasswdToModifyED->SetText( "" );
             }
             pEdit->GrabFocus();
         }
diff --git a/desktop/source/app/officeipcthread.cxx b/desktop/source/app/officeipcthread.cxx
index 71fcfc3c9921..c406336bbb86 100644
--- a/desktop/source/app/officeipcthread.cxx
+++ b/desktop/source/app/officeipcthread.cxx
@@ -1066,16 +1066,15 @@ bool OfficeIPCThread::ExecuteCmdLineRequests( ProcessDocumentsRequest& aRequest
 
     static DispatchWatcher::DispatchList    aDispatchList;
 
-    OUString aEmpty;
     // Create dispatch list for dispatch watcher
-    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aInFilter, DispatchWatcher::REQUEST_INFILTER, aEmpty, aRequest.aModule );
-    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aOpenList, DispatchWatcher::REQUEST_OPEN, aEmpty, aRequest.aModule );
-    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aViewList, DispatchWatcher::REQUEST_VIEW, aEmpty, aRequest.aModule );
-    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aStartList, DispatchWatcher::REQUEST_START, aEmpty, aRequest.aModule );
-    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aPrintList, DispatchWatcher::REQUEST_PRINT, aEmpty, aRequest.aModule );
+    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aInFilter, DispatchWatcher::REQUEST_INFILTER, "", aRequest.aModule );
+    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aOpenList, DispatchWatcher::REQUEST_OPEN, "", aRequest.aModule );
+    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aViewList, DispatchWatcher::REQUEST_VIEW, "", aRequest.aModule );
+    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aStartList, DispatchWatcher::REQUEST_START, "", aRequest.aModule );
+    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aPrintList, DispatchWatcher::REQUEST_PRINT, "", aRequest.aModule );
     AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aPrintToList, DispatchWatcher::REQUEST_PRINTTO, aRequest.aPrinterName, aRequest.aModule );
-    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aForceOpenList, DispatchWatcher::REQUEST_FORCEOPEN, aEmpty, aRequest.aModule );
-    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aForceNewList, DispatchWatcher::REQUEST_FORCENEW, aEmpty, aRequest.aModule );
+    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aForceOpenList, DispatchWatcher::REQUEST_FORCEOPEN, "", aRequest.aModule );
+    AddToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aForceNewList, DispatchWatcher::REQUEST_FORCENEW, "", aRequest.aModule );
     AddConversionsToDispatchList( aDispatchList, aRequest.aCwdUrl, aRequest.aConversionList, aRequest.aConversionParams, aRequest.aPrinterName, aRequest.aModule, aRequest.aConversionOut, aRequest.bTextCat );
     bool bShutdown( false );
 
diff --git a/editeng/source/uno/unofield.cxx b/editeng/source/uno/unofield.cxx
index dd6bf4371947..31a32877a8c9 100644
--- a/editeng/source/uno/unofield.cxx
+++ b/editeng/source/uno/unofield.cxx
@@ -453,7 +453,6 @@ SvxFieldData* SvxUnoTextField::CreateFieldData() const throw()
         OUString aContent;
         OUString aFirstName;
         OUString aLastName;
-        OUString aEmpty;
 
         // do we have CurrentPresentation given?
         // mimic behaviour of writer, which means:
@@ -476,7 +475,7 @@ SvxFieldData* SvxUnoTextField::CreateFieldData() const throw()
         }
 
         // #92009# pass fixed attribute to constructor
-        pData = new SvxAuthorField( aFirstName, aLastName, aEmpty,
+        pData = new SvxAuthorField( aFirstName, aLastName, "",
                                     mpImpl->mbBoolean1 ? SVXAUTHORTYPE_FIX : SVXAUTHORTYPE_VAR );
 
         if( !mpImpl->mbBoolean2 )
diff --git a/editeng/source/uno/unotext.cxx b/editeng/source/uno/unotext.cxx
index 7b35d6e721d3..b008c433fe69 100644
--- a/editeng/source/uno/unotext.cxx
+++ b/editeng/source/uno/unotext.cxx
@@ -377,8 +377,7 @@ OUString SAL_CALL SvxUnoTextRangeBase::getString()
     }
     else
     {
-        const OUString aEmpty;
-        return aEmpty;
+        return "";
     }
 }
 
@@ -1864,8 +1863,7 @@ void SAL_CALL SvxUnoTextBase::insertControlCharacter( const uno::Reference< text
 
                 if( bAbsorb )
                 {
-                    const OUString aEmpty;
-                    pForwarder->QuickInsertText( aEmpty, aRange );
+                    pForwarder->QuickInsertText( "", aRange );
 
                     aRange.nEndPos = aRange.nStartPos;
                     aRange.nEndPara = aRange.nStartPara;
diff --git a/filter/source/xsltdialog/xmlfiltertabpagexslt.cxx b/filter/source/xsltdialog/xmlfiltertabpagexslt.cxx
index 693e37f27d48..c05c7ae050b4 100644
--- a/filter/source/xsltdialog/xmlfiltertabpagexslt.cxx
+++ b/filter/source/xsltdialog/xmlfiltertabpagexslt.cxx
@@ -131,8 +131,7 @@ void XMLFilterTabPageXSLT::SetURL( SvtURLBox* rURLBox, const OUString& rURL )
     else
     {
         rURLBox->SetBaseURL( sInstPath );
-        OUString aEmpty;
-        rURLBox->SetText( aEmpty );
+        rURLBox->SetText( "" );
     }
 }
 
diff --git a/fpicker/source/office/iodlg.cxx b/fpicker/source/office/iodlg.cxx
index 6b875793a8e9..156d103142d7 100644
--- a/fpicker/source/office/iodlg.cxx
+++ b/fpicker/source/office/iodlg.cxx
@@ -2268,7 +2268,6 @@ std::vector<OUString> SvtFileDialog::GetPathList() const
 
 bool SvtFileDialog::IsolateFilterFromPath_Impl( OUString& rPath, OUString& rFilter )
 {
-    OUString aEmpty;
     OUString aReversePath = comphelper::string::reverseString(rPath);
     sal_Int32 nQuestionMarkPos = rPath.indexOf( '?' );
     sal_Int32 nWildCardPos = rPath.indexOf( FILEDIALOG_DEF_WILDCARD );
@@ -2284,7 +2283,7 @@ bool SvtFileDialog::IsolateFilterFromPath_Impl( OUString& rPath, OUString& rFilt
         nWildCardPos = std::min( nWildCardPos, nQuestionMarkPos );
     }
 
-    rFilter = aEmpty;
+    rFilter.clear();
 
     if ( nWildCardPos != -1 )
     {
@@ -2331,7 +2330,7 @@ bool SvtFileDialog::IsolateFilterFromPath_Impl( OUString& rPath, OUString& rFilt
         else
         {
             rFilter = rPath;
-            rPath = aEmpty;
+            rPath.clear();
         }
     }
 
diff --git a/fpicker/source/win32/filepicker/VistaFilePickerImpl.cxx b/fpicker/source/win32/filepicker/VistaFilePickerImpl.cxx
index 54f30690767a..08d947e3a17a 100644
--- a/fpicker/source/win32/filepicker/VistaFilePickerImpl.cxx
+++ b/fpicker/source/win32/filepicker/VistaFilePickerImpl.cxx
@@ -348,11 +348,10 @@ void VistaFilePickerImpl::impl_sta_appendFilterGroup(const RequestRef& rRequest)
         rRequest->getArgumentOrDefault(PROP_FILTER_GROUP, css::uno::Sequence< css::beans::StringPair >());
 
     // SYNCHRONIZED->
-    OUString aEmpty;
     ::osl::ResettableMutexGuard aLock(m_aMutex);
 
     if ( m_lFilters.numFilter() > 0 && aFilterGroup.getLength() > 0 )
-        m_lFilters.addFilter( STRING_SEPARATOR, aEmpty, sal_True );
+        m_lFilters.addFilter( STRING_SEPARATOR, "", sal_True );
 
     ::sal_Int32 c = aFilterGroup.getLength();
     ::sal_Int32 i = 0;
diff --git a/framework/source/uielement/fontmenucontroller.cxx b/framework/source/uielement/fontmenucontroller.cxx
index 71176480a40a..70229e9357c1 100644
--- a/framework/source/uielement/fontmenucontroller.cxx
+++ b/framework/source/uielement/fontmenucontroller.cxx
@@ -156,7 +156,6 @@ void SAL_CALL FontMenuController::itemActivated( const css::awt::MenuEvent& ) th
         // find new font name and set check mark!
         sal_uInt16        nChecked = 0;
         sal_uInt16        nItemCount = m_xPopupMenu->getItemCount();
-        OUString aEmpty;
         for( sal_uInt16 i = 0; i < nItemCount; i++ )
         {
             sal_uInt16 nItemId = m_xPopupMenu->getItemId( i );
@@ -169,7 +168,7 @@ void SAL_CALL FontMenuController::itemActivated( const css::awt::MenuEvent& ) th
             // TODO: must be replaced by implementation of VCL, when available
             sal_Int32 nIndex = aText.indexOf( (sal_Unicode)'~' );
             if ( nIndex >= 0 )
-                aText = aText.replaceAt( nIndex, 1, aEmpty );
+                aText = aText.replaceAt( nIndex, 1, "" );
             // TODO: must be replaced by implementation of VCL, when available
 
             if ( aText == m_aFontFamilyName )
diff --git a/framework/source/uielement/menubarmanager.cxx b/framework/source/uielement/menubarmanager.cxx
index 946571eaa378..421cb05213a1 100644
--- a/framework/source/uielement/menubarmanager.cxx
+++ b/framework/source/uielement/menubarmanager.cxx
@@ -1150,7 +1150,6 @@ void MenuBarManager::FillMenuManager( Menu* pMenu, const Reference< XFrame >& rF
         framework::AddonMenuManager::MergeAddonHelpMenu( rFrame, static_cast<MenuBar *>(pMenu), m_xContext );
     }
 
-    OUString    aEmpty;
     bool    bAccessibilityEnabled( Application::GetSettings().GetMiscSettings().GetEnableATToolSupport() );
     sal_uInt16 nItemCount = pMenu->GetItemCount();
     OUString aItemCommand;
@@ -1190,7 +1189,7 @@ void MenuBarManager::FillMenuManager( Menu* pMenu, const Reference< XFrame >& rF
             if (!pMenu->GetHelpCommand(nItemId).isEmpty())
             {
                 aModuleIdentifier = pMenu->GetHelpCommand( nItemId );
-                pMenu->SetHelpCommand( nItemId, aEmpty );
+                pMenu->SetHelpCommand( nItemId, "" );
             }
 
             if ( m_xPopupMenuControllerFactory.is() &&
diff --git a/linguistic/source/spelldta.cxx b/linguistic/source/spelldta.cxx
index f1d5d7b00023..34c931290578 100644
--- a/linguistic/source/spelldta.cxx
+++ b/linguistic/source/spelldta.cxx
@@ -110,7 +110,6 @@ void SeqRemoveNegEntries( Sequence< OUString > &rSeq,
         Reference< XSearchableDictionaryList > &rxDicList,
         sal_Int16 nLanguage )
 {
-    static const OUString aEmpty;
     bool bSthRemoved = false;
     sal_Int32 nLen = rSeq.getLength();
     OUString *pEntries = rSeq.getArray();
@@ -120,7 +119,7 @@ void SeqRemoveNegEntries( Sequence< OUString > &rSeq,
                     pEntries[i], nLanguage, false, true ) );
         if (xNegEntry.is())
         {
-            pEntries[i] = aEmpty;
+            pEntries[i].clear();
             bSthRemoved = true;
         }
     }
diff --git a/lotuswordpro/source/filter/lwpbulletstylemgr.cxx b/lotuswordpro/source/filter/lwpbulletstylemgr.cxx
index 2c7a86e7e7ec..34f9c563e9ca 100644
--- a/lotuswordpro/source/filter/lwpbulletstylemgr.cxx
+++ b/lotuswordpro/source/filter/lwpbulletstylemgr.cxx
@@ -100,25 +100,23 @@ LwpBulletStyleMgr::~LwpBulletStyleMgr()
 OUString LwpBulletStyleMgr::RegisterBulletStyle(LwpPara* pPara, LwpBulletOverride* pBullOver,
     LwpIndentOverride* pIndent)
 {
-    OUString aEmpty;
-
     if(!pPara || !pIndent || !pBullOver)
     {
-        return aEmpty;
+        return "";
     }
 
     LwpSilverBullet* pSilverBullet = pPara->GetSilverBullet();
     if (!pSilverBullet)
     {
         assert(false);
-        return aEmpty;
+        return "";
     }
 
     LwpPara* pBulletPara = pSilverBullet->GetBulletPara();
     if (!pBulletPara)
     {
         assert(false);
-        return aEmpty;
+        return "";
     }
 
     LwpParaProperty* pProp = pPara->GetProperty(PP_LOCAL_INDENT);
diff --git a/lotuswordpro/source/filter/lwpsilverbullet.cxx b/lotuswordpro/source/filter/lwpsilverbullet.cxx
index 3ae7567bda38..a695c9001644 100644
--- a/lotuswordpro/source/filter/lwpsilverbullet.cxx
+++ b/lotuswordpro/source/filter/lwpsilverbullet.cxx
@@ -189,12 +189,10 @@ void LwpSilverBullet::RegisterStyle()
  */
 OUString LwpSilverBullet::GetBulletFontName()
 {
-    OUString aEmpty;
-
     //foundry has been set?
     if (!m_pFoundry)
     {
-        return aEmpty;
+        return "";
     }
 
     LwpFontManager& rFontMgr = m_pFoundry->GetFontManger();
@@ -205,7 +203,7 @@ OUString LwpSilverBullet::GetBulletFontName()
     //final fontid is valid?
     if (nFinalFont > 255 || nFinalFont == 0)
     {
-        return aEmpty;
+        return "";
     }
 
     //get font name from font manager.
@@ -251,12 +249,10 @@ LwpPara* LwpSilverBullet::GetBulletPara()
  */
 OUString LwpSilverBullet::GetNumCharByStyleID(LwpFribParaNumber* pParaNumber)
 {
-    OUString aEmpty;
-
     if (!pParaNumber)
     {
         assert(false);
-        return aEmpty;
+        return "";
     }
 
     OUString strNumChar("1");
@@ -303,7 +299,7 @@ OUString LwpSilverBullet::GetNumCharByStyleID(LwpFribParaNumber* pParaNumber)
         }
         break;
     case NUMCHAR_none:
-        strNumChar = aEmpty;
+        strNumChar.clear();
         break;
     default:
         break;
@@ -359,7 +355,7 @@ sal_uInt16 LwpSilverBullet::GetDisplayLevel(sal_uInt8 nPos)
  */
 OUString LwpSilverBullet::GetAdditionalName(sal_uInt8 nPos)
 {
-    OUString aRet, aEmpty;
+    OUString aRet;
     sal_uInt16 nHideBit = (1 << nPos);
     bool bDivisionName = false;
     bool bSectionName = false;
@@ -367,7 +363,7 @@ OUString LwpSilverBullet::GetAdditionalName(sal_uInt8 nPos)
     LwpFrib* pParaFrib = m_pBulletPara->GetFribs().GetFribs();
     if (!pParaFrib)
     {
-        return aEmpty;
+        return "";
     }
 
     while (pParaFrib)
@@ -377,7 +373,7 @@ OUString LwpSilverBullet::GetAdditionalName(sal_uInt8 nPos)
             ModifierInfo* pMoInfo = pParaFrib->GetModifiers();
             if (!pMoInfo)
             {
-                return aEmpty;
+                return "";
             }
             sal_uInt16 nHideLevels = pMoInfo->aTxtAttrOverride.GetHideLevels();
             sal_uInt16 nType = static_cast<LwpFribDocVar*>(pParaFrib)->GetType();
@@ -435,11 +431,10 @@ OUString LwpSilverBullet::GetDivisionName()
 
 OUString LwpSilverBullet::GetSectionName()
 {
-    OUString aEmpty;
     LwpStory* pStory = dynamic_cast<LwpStory*>(m_aStory.obj(VO_STORY).get());
     if (!pStory)
     {
-        return aEmpty;
+        return "";
     }
 
     return pStory->GetSectionName();
diff --git a/oox/source/drawingml/diagram/diagram.cxx b/oox/source/drawingml/diagram/diagram.cxx
index 5618be859e85..ef8b3896df03 100644
--- a/oox/source/drawingml/diagram/diagram.cxx
+++ b/oox/source/drawingml/diagram/diagram.cxx
@@ -500,15 +500,13 @@ void loadDiagram( const ShapePtr& pShape,
     DiagramLayoutPtr pLayout( new DiagramLayout() );
     pDiagram->setLayout( pLayout );
 
-    OUString aEmpty;
-
     // data
     if( rXDataModelDom.is() )
         importFragment(rFilter,
                        rXDataModelDom,
                        "OOXData",
                        pDiagram,
-                       new DiagramDataFragmentHandler( rFilter, aEmpty, pData ));
+                       new DiagramDataFragmentHandler( rFilter, "", pData ));
 
     // layout
     if( rXLayoutDom.is() )
@@ -516,7 +514,7 @@ void loadDiagram( const ShapePtr& pShape,
                        rXLayoutDom,
                        "OOXLayout",
                        pDiagram,
-                       new DiagramLayoutFragmentHandler( rFilter, aEmpty, pLayout ));
+                       new DiagramLayoutFragmentHandler( rFilter, "", pLayout ));
 
     // style
     if( rXQStyleDom.is() )
@@ -524,7 +522,7 @@ void loadDiagram( const ShapePtr& pShape,
                        rXQStyleDom,
                        "OOXStyle",
                        pDiagram,
-                       new DiagramQStylesFragmentHandler( rFilter, aEmpty, pDiagram->getStyles() ));
+                       new DiagramQStylesFragmentHandler( rFilter, "", pDiagram->getStyles() ));
 
     // colors
     if( rXColorStyleDom.is() )
@@ -532,7 +530,7 @@ void loadDiagram( const ShapePtr& pShape,
                        rXColorStyleDom,
                        "OOXColor",
                        pDiagram,
-                       new ColorFragmentHandler( rFilter, aEmpty, pDiagram->getColors() ));
+                       new ColorFragmentHandler( rFilter, "", pDiagram->getColors() ));
 
     // diagram loaded. now lump together & attach to shape
     pDiagram->addTo(pShape);
diff --git a/oox/source/drawingml/shape.cxx b/oox/source/drawingml/shape.cxx
index f4e2e41cb730..ec57a0cf1b65 100644
--- a/oox/source/drawingml/shape.cxx
+++ b/oox/source/drawingml/shape.cxx
@@ -581,8 +581,7 @@ Reference< XShape > Shape::createAndInsert(
             uno::Reference< text::XText > xText( mxShape, uno::UNO_QUERY );
             if ( xText.is() )
             {
-                OUString aEmpty;
-                xText->setString( aEmpty );
+                xText->setString( "" );
             }
         }
 
diff --git a/oox/source/ppt/dgmimport.cxx b/oox/source/ppt/dgmimport.cxx
index 4cf8b2b0b62c..1e70c4275d27 100644
--- a/oox/source/ppt/dgmimport.cxx
+++ b/oox/source/ppt/dgmimport.cxx
@@ -62,7 +62,6 @@ bool QuickDiagrammingImport::importDocument() throw (css::uno::RuntimeException,
         file:///<path-to-oox-module>/source/dump/pptxdumper.ini. */
     OOX_DUMP_FILE( ::oox::dump::pptx::Dumper );
 
-    OUString aEmpty;
     OUString aFragmentPath = getFragmentPathFromFirstTypeFromOfficeDoc( "diagramLayout" );
 
     Reference<drawing::XShapes> xParentShape(getParentShape(),
@@ -71,10 +70,10 @@ bool QuickDiagrammingImport::importDocument() throw (css::uno::RuntimeException,
         new oox::drawingml::Shape( "com.sun.star.drawing.DiagramShape" ) );
     drawingml::loadDiagram(pShape,
                            *this,
-                           aEmpty,
+                           "",
                            aFragmentPath,
-                           aEmpty,
-                           aEmpty);
+                           "",
+                           "");
     oox::drawingml::ThemePtr pTheme(
         new oox::drawingml::Theme());
     basegfx::B2DHomMatrix aMatrix;
diff --git a/sc/source/core/data/documen3.cxx b/sc/source/core/data/documen3.cxx
index 2353e91f17bd..2b8dc9afa57c 100644
--- a/sc/source/core/data/documen3.cxx
+++ b/sc/source/core/data/documen3.cxx
@@ -1947,7 +1947,6 @@ void ScDocument::SetExtDocOptions( ScExtDocOptions* pNewOptions )
 void ScDocument::DoMergeContents( SCTAB nTab, SCCOL nStartCol, SCROW nStartRow,
                                     SCCOL nEndCol, SCROW nEndRow )
 {
-    OUString aEmpty;
     OUStringBuffer aTotal;
     OUString aCellStr;
     SCCOL nCol;
@@ -1963,7 +1962,7 @@ void ScDocument::DoMergeContents( SCTAB nTab, SCCOL nStartCol, SCROW nStartRow,
                 aTotal.append(aCellStr);
             }
             if (nCol != nStartCol || nRow != nStartRow)
-                SetString(nCol,nRow,nTab,aEmpty);
+                SetString(nCol,nRow,nTab,"");
         }
 
     SetString(nStartCol,nStartRow,nTab,aTotal.makeStringAndClear());
diff --git a/sc/source/core/data/validat.cxx b/sc/source/core/data/validat.cxx
index bb19d024f4f1..42d06a623edf 100644
--- a/sc/source/core/data/validat.cxx
+++ b/sc/source/core/data/validat.cxx
@@ -125,8 +125,7 @@ ScValidationData::~ScValidationData()
 
 bool ScValidationData::IsEmpty() const
 {
-    OUString aEmpty;
-    ScValidationData aDefault( SC_VALID_ANY, SC_COND_EQUAL, aEmpty, aEmpty, GetDocument(), ScAddress() );
+    ScValidationData aDefault( SC_VALID_ANY, SC_COND_EQUAL, "", "", GetDocument(), ScAddress() );
     return EqualEntries( aDefault );
 }
 
diff --git a/sc/source/ui/app/inputhdl.cxx b/sc/source/ui/app/inputhdl.cxx
index f1b18377234a..777c8b8fc7e6 100644
--- a/sc/source/ui/app/inputhdl.cxx
+++ b/sc/source/ui/app/inputhdl.cxx
@@ -2991,15 +2991,14 @@ void ScInputHandler::ClearText()
 
     DataChanging();                         // Cannot be new
 
-    OUString aEmpty;
     if (pTableView)
     {
-        pTableView->GetEditEngine()->SetText( aEmpty );
+        pTableView->GetEditEngine()->SetText( "" );
         pTableView->SetSelection( ESelection(0,0, 0,0) );
     }
     if (pTopView)
     {
-        pTopView->GetEditEngine()->SetText( aEmpty );
+        pTopView->GetEditEngine()->SetText( "" );
         pTopView->SetSelection( ESelection(0,0, 0,0) );
     }
 
diff --git a/sc/source/ui/docshell/tablink.cxx b/sc/source/ui/docshell/tablink.cxx
index 742b79a24a0c..3239b5a97c6f 100644
--- a/sc/source/ui/docshell/tablink.cxx
+++ b/sc/source/ui/docshell/tablink.cxx
@@ -97,12 +97,11 @@ ScTableLink::~ScTableLink()
     // Verbindung aufheben
 
     StopRefreshTimer();
-    OUString aEmpty;
     ScDocument& rDoc = pImpl->m_pDocSh->GetDocument();
     SCTAB nCount = rDoc.GetTableCount();
     for (SCTAB nTab=0; nTab<nCount; nTab++)
         if (rDoc.IsLinked(nTab) && aFileName.equals(rDoc.GetLinkDoc(nTab)))
-            rDoc.SetLink( nTab, SC_LINK_NONE, aEmpty, aEmpty, aEmpty, aEmpty, 0 );
+            rDoc.SetLink( nTab, SC_LINK_NONE, "", "", "", "", 0 );
     delete pImpl;
 }
 
diff --git a/sc/source/ui/drawfunc/fuins1.cxx b/sc/source/ui/drawfunc/fuins1.cxx
index 0c94d8b3c7fa..7670949fa3d8 100644
--- a/sc/source/ui/drawfunc/fuins1.cxx
+++ b/sc/source/ui/drawfunc/fuins1.cxx
@@ -106,14 +106,13 @@ static void lcl_InsertGraphic( const Graphic& rGraphic,
             //sal_Int8 nAction(DND_ACTION_MOVE);
             //Point aPos;
             const OUString aBeginUndo(ScGlobal::GetRscString(STR_UNDO_DRAGDROP));
-            const OUString aEmpty;
 
             SdrObject* pResult = pDrawView->ApplyGraphicToObject(
                 *pPickObj,
                 rGraphic,
                 aBeginUndo,
-                bAsLink ? rFileName : aEmpty,
-                bAsLink ? rFilterName : aEmpty);
+                bAsLink ? rFileName : OUString(),
+                bAsLink ? rFilterName : OUString());
 
             if(pResult)
             {
diff --git a/sc/source/ui/undo/undotab.cxx b/sc/source/ui/undo/undotab.cxx
index e6acdbd6f9d1..f18acd2af3e8 100644
--- a/sc/source/ui/undo/undotab.cxx
+++ b/sc/source/ui/undo/undotab.cxx
@@ -1086,12 +1086,11 @@ OUString ScUndoRemoveLink::GetComment() const
 void ScUndoRemoveLink::DoChange( bool bLink ) const
 {
     ScDocument& rDoc = pDocShell->GetDocument();
-    OUString aEmpty;
     for (sal_uInt16 i=0; i<nCount; i++)
         if (bLink)      // establish link
             rDoc.SetLink( pTabs[i], pModes[i], aDocName, aFltName, aOptions, pTabNames[i], nRefreshDelay );
         else            // remove link
-            rDoc.SetLink( pTabs[i], SC_LINK_NONE, aEmpty, aEmpty, aEmpty, aEmpty, 0 );
+            rDoc.SetLink( pTabs[i], SC_LINK_NONE, "", "", "", "", 0 );
     pDocShell->UpdateLinks();
 }
 
diff --git a/sc/source/ui/unoobj/cellsuno.cxx b/sc/source/ui/unoobj/cellsuno.cxx
index 7895ef94179a..a2c83b4b37de 100644
--- a/sc/source/ui/unoobj/cellsuno.cxx
+++ b/sc/source/ui/unoobj/cellsuno.cxx
@@ -7588,8 +7588,7 @@ void SAL_CALL ScTableSheetObj::setLinkMode( sheet::SheetLinkMode nLinkMode )
     OUString aUrl(getLinkUrl());
     OUString aSheet(getLinkSheetName());
 
-    OUString aEmpty;
-    link( aUrl, aSheet, aEmpty, aEmpty, nLinkMode );
+    link( aUrl, aSheet, "", "", nLinkMode );
 }
 
 OUString SAL_CALL ScTableSheetObj::getLinkUrl() throw(uno::RuntimeException, std::exception)
@@ -7612,8 +7611,7 @@ void SAL_CALL ScTableSheetObj::setLinkUrl( const OUString& aLinkUrl )
     sheet::SheetLinkMode eMode = getLinkMode();
     OUString aSheet(getLinkSheetName());
 
-    OUString aEmpty;
-    link( aLinkUrl, aSheet, aEmpty, aEmpty, eMode );
+    link( aLinkUrl, aSheet, "", "", eMode );
 }
 
 OUString SAL_CALL ScTableSheetObj::getLinkSheetName() throw(uno::RuntimeException, std::exception)
@@ -7636,8 +7634,7 @@ void SAL_CALL ScTableSheetObj::setLinkSheetName( const OUString& aLinkSheetName
     sheet::SheetLinkMode eMode = getLinkMode();
     OUString aUrl(getLinkUrl());
 
-    OUString aEmpty;
-    link( aUrl, aLinkSheetName, aEmpty, aEmpty, eMode );
+    link( aUrl, aLinkSheetName, "", "", eMode );
 }
 
 void SAL_CALL ScTableSheetObj::link( const OUString& aUrl, const OUString& aSheetName,
diff --git a/sc/source/ui/unoobj/chart2uno.cxx b/sc/source/ui/unoobj/chart2uno.cxx
index 5373bf812308..f99622c346a0 100644
--- a/sc/source/ui/unoobj/chart2uno.cxx
+++ b/sc/source/ui/unoobj/chart2uno.cxx
@@ -1999,7 +1999,6 @@ uno::Sequence< beans::PropertyValue > SAL_CALL ScChart2DataProvider::detectArgum
             OUString aNewLabel;
             OUString aOldValues;
             OUString aNewValues;
-            OUString aEmpty;
 
             for( sal_Int32 nNewIndex = 0; nNewIndex < aNewSequences.getLength(); nNewIndex++ )
             {
@@ -2010,7 +2009,10 @@ uno::Sequence< beans::PropertyValue > SAL_CALL ScChart2DataProvider::detectArgum
 
                     if( xOld.is() && xNew.is() )
                     {
-                        aOldLabel = aNewLabel = aOldValues = aNewValues = aEmpty;
+                        aOldLabel.clear();
+                        aNewLabel.clear();
+                        aOldValues.clear();
+                        aNewValues.clear();
                         if( xOld.is() && xOld->getLabel().is() )
                             aOldLabel = xOld->getLabel()->getSourceRangeRepresentation();
                         if( xNew.is() && xNew->getLabel().is() )
diff --git a/sc/source/ui/unoobj/dapiuno.cxx b/sc/source/ui/unoobj/dapiuno.cxx
index 715cec1cacd5..fa9d99d14686 100644
--- a/sc/source/ui/unoobj/dapiuno.cxx
+++ b/sc/source/ui/unoobj/dapiuno.cxx
@@ -828,8 +828,7 @@ void SAL_CALL ScDataPilotDescriptorBase::setPropertyValue( const OUString& aProp
                 OUString aStrVal;
                 if ( aValue >>= aStrVal )
                 {
-                    OUString aEmpty;
-                    ScDPServiceDesc aServiceDesc(aEmpty, aEmpty, aEmpty, aEmpty, aEmpty);
+                    ScDPServiceDesc aServiceDesc("", "", "", "", "");
 
                     const ScDPServiceDesc* pOldDesc = pDPObject->GetDPServiceDesc();
                     if (pOldDesc)
@@ -845,8 +844,7 @@ void SAL_CALL ScDataPilotDescriptorBase::setPropertyValue( const OUString& aProp
                 uno::Sequence<beans::PropertyValue> aArgSeq;
                 if ( aValue >>= aArgSeq )
                 {
-                    OUString aEmpty;
-                    ScDPServiceDesc aServiceDesc(aEmpty, aEmpty, aEmpty, aEmpty, aEmpty);
+                    ScDPServiceDesc aServiceDesc("", "", "", "", "");
 
                     const ScDPServiceDesc* pOldDesc = pDPObject->GetDPServiceDesc();
                     if (pOldDesc)
diff --git a/sc/source/ui/unoobj/dispuno.cxx b/sc/source/ui/unoobj/dispuno.cxx
index d0d694daaf07..b351694636e3 100644
--- a/sc/source/ui/unoobj/dispuno.cxx
+++ b/sc/source/ui/unoobj/dispuno.cxx
@@ -256,9 +256,8 @@ static void lcl_FillDataSource( frame::FeatureStateEvent& rEvent, const ScImport
     {
         //  descriptor has to be complete anyway
 
-        OUString aEmpty;
-        aDescriptor[svx::daDataSource]  <<= aEmpty;
-        aDescriptor[svx::daCommand]     <<= aEmpty;
+        aDescriptor[svx::daDataSource]  <<= OUString();
+        aDescriptor[svx::daCommand]     <<= OUString();
         aDescriptor[svx::daCommandType] <<= (sal_Int32)sdb::CommandType::TABLE;
     }
     rEvent.State <<= aDescriptor.createPropertyValueSequence();
diff --git a/sc/source/ui/view/viewfun3.cxx b/sc/source/ui/view/viewfun3.cxx
index d994e2b2a6fb..e6227831651b 100644
--- a/sc/source/ui/view/viewfun3.cxx
+++ b/sc/source/ui/view/viewfun3.cxx
@@ -754,10 +754,9 @@ bool ScViewFunc::PasteOnDrawObjectLinked(
 
             ReadGraphic( *xStm, aGraphic );
 
-            const OUString aEmpty;
             const OUString aBeginUndo(ScGlobal::GetRscString(STR_UNDO_DRAGDROP));
 
-            if(pScDrawView->ApplyGraphicToObject( rHitObj, aGraphic, aBeginUndo, aEmpty, aEmpty ))
+            if(pScDrawView->ApplyGraphicToObject( rHitObj, aGraphic, aBeginUndo, "", "" ))
             {
                 return true;
             }
@@ -770,10 +769,9 @@ bool ScViewFunc::PasteOnDrawObjectLinked(
 
         if( pScDrawView && aDataHelper.GetGDIMetaFile( SotClipboardFormatId::GDIMETAFILE, aMtf ) )
         {
-            const OUString aEmpty;
             const OUString aBeginUndo(ScGlobal::GetRscString(STR_UNDO_DRAGDROP));
 
-            if(pScDrawView->ApplyGraphicToObject( rHitObj, Graphic(aMtf), aBeginUndo, aEmpty, aEmpty ))
+            if(pScDrawView->ApplyGraphicToObject( rHitObj, Graphic(aMtf), aBeginUndo, "", "" ))
             {
                 return true;
             }
@@ -786,10 +784,9 @@ bool ScViewFunc::PasteOnDrawObjectLinked(
 
         if( pScDrawView && aDataHelper.GetBitmapEx( SotClipboardFormatId::BITMAP, aBmpEx ) )
         {
-            const OUString aEmpty;
             const OUString aBeginUndo(ScGlobal::GetRscString(STR_UNDO_DRAGDROP));
 
-            if(pScDrawView->ApplyGraphicToObject( rHitObj, Graphic(aBmpEx), aBeginUndo, aEmpty, aEmpty ))
+            if(pScDrawView->ApplyGraphicToObject( rHitObj, Graphic(aBmpEx), aBeginUndo, "", "" ))
             {
                 return true;
             }
diff --git a/sc/source/ui/view/viewfun7.cxx b/sc/source/ui/view/viewfun7.cxx
index 311924e60d89..3bed5d9e9faa 100644
--- a/sc/source/ui/view/viewfun7.cxx
+++ b/sc/source/ui/view/viewfun7.cxx
@@ -365,16 +365,14 @@ bool ScViewFunc::PasteObject( const Point& rPos, const uno::Reference < embed::X
 
 bool ScViewFunc::PasteBitmapEx( const Point& rPos, const BitmapEx& rBmpEx )
 {
-    OUString aEmpty;
     Graphic aGraphic(rBmpEx);
-    return PasteGraphic( rPos, aGraphic, aEmpty, aEmpty );
+    return PasteGraphic( rPos, aGraphic, "", "" );
 }
 
 bool ScViewFunc::PasteMetaFile( const Point& rPos, const GDIMetaFile& rMtf )
 {
-    OUString aEmpty;
     Graphic aGraphic(rMtf);
-    return PasteGraphic( rPos, aGraphic, aEmpty, aEmpty );
+    return PasteGraphic( rPos, aGraphic, "", "" );
 }
 
 bool ScViewFunc::PasteGraphic( const Point& rPos, const Graphic& rGraphic,
diff --git a/sd/source/core/EffectMigration.cxx b/sd/source/core/EffectMigration.cxx
index abfa32106465..4261b7e78d41 100644
--- a/sd/source/core/EffectMigration.cxx
+++ b/sd/source/core/EffectMigration.cxx
@@ -644,10 +644,9 @@ void EffectMigration::SetTextAnimationEffect( SvxShape* pShape, AnimationEffect
                 }
                 else
                 {
-                    OUString aEmpty;
                     CustomAnimationPresetPtr pShapePreset( rPresets.getEffectDescriptor( "ooo-entrance-appear" ) );
 
-                    Reference< XAnimationNode > xNode( pPreset->create( aEmpty ) );
+                    Reference< XAnimationNode > xNode( pPreset->create( "" ) );
                     DBG_ASSERT( xNode.is(), "EffectMigration::SetTextAnimationEffect(), could not create preset!" );
                     if( xNode.is() )
                     {
diff --git a/sd/source/filter/ppt/pptinanimations.cxx b/sd/source/filter/ppt/pptinanimations.cxx
index 3783d7e85008..d63bc65c254e 100644
--- a/sd/source/filter/ppt/pptinanimations.cxx
+++ b/sd/source/filter/ppt/pptinanimations.cxx
@@ -659,8 +659,7 @@ bool AnimationImporter::convertAnimationNode( const Reference< XAnimationNode >&
     if( (nNodeType == AnimationNodeType::ANIMATEMOTION) ||
         (nNodeType == AnimationNodeType::ANIMATETRANSFORM) )
     {
-        OUString aEmpty;
-        aAttributeName = aEmpty;
+        aAttributeName.clear();
     }
     else
     {
diff --git a/sfx2/source/appl/shutdowniconw32.cxx b/sfx2/source/appl/shutdowniconw32.cxx
index 55b0d5bae421..059f94732f22 100644
--- a/sfx2/source/appl/shutdowniconw32.cxx
+++ b/sfx2/source/appl/shutdowniconw32.cxx
@@ -191,8 +191,6 @@ static HMENU createSystrayMenu( )
         { SvtModuleOptions::EModule::MATH,      IDM_MATH,   ICON_MATH_DOCUMENT,         MATH_URL },
     };
 
-    OUString aEmpty;
-
     // insert the menu entries for launching the applications
     for ( size_t i = 0; i < sizeof( aMenuItems ) / sizeof( aMenuItems[0] ); ++i )
     {
@@ -208,21 +206,21 @@ static HMENU createSystrayMenu( )
             continue;
 
         addMenuItem( hMenu, aMenuItems[i].nMenuItemID, aMenuItems[i].nMenuIconID,
-            pShutdownIcon->GetUrlDescription( sURL ), pos, true, aEmpty );
+            pShutdownIcon->GetUrlDescription( sURL ), pos, true, "" );
     }
 
 
 
     // insert the remaining menu entries
     addMenuItem( hMenu, IDM_TEMPLATE, ICON_TEMPLATE,
-        pShutdownIcon->GetResString( STR_QUICKSTART_FROMTEMPLATE ), pos, true, aEmpty);
-    addMenuItem( hMenu, static_cast< UINT >( -1 ), 0, OUString(), pos, false, aEmpty );
+        pShutdownIcon->GetResString( STR_QUICKSTART_FROMTEMPLATE ), pos, true, "");
+    addMenuItem( hMenu, static_cast< UINT >( -1 ), 0, OUString(), pos, false, "" );
     addMenuItem( hMenu, IDM_OPEN,   ICON_OPEN, pShutdownIcon->GetResString( STR_QUICKSTART_FILEOPEN ), pos, true, OUString("SHELL32"));
-    addMenuItem( hMenu, static_cast< UINT >( -1 ), 0, OUString(), pos, false, aEmpty );
+    addMenuItem( hMenu, static_cast< UINT >( -1 ), 0, OUString(), pos, false, "" );
 #endif
-    addMenuItem( hMenu, IDM_INSTALL,0, pShutdownIcon->GetResString( STR_QUICKSTART_PRELAUNCH ), pos, false, aEmpty );
-    addMenuItem( hMenu, static_cast< UINT >( -1 ), 0, OUString(), pos, false, aEmpty );
-    addMenuItem( hMenu, IDM_EXIT,   0, pShutdownIcon->GetResString( STR_QUICKSTART_EXIT ), pos, false, aEmpty );
+    addMenuItem( hMenu, IDM_INSTALL,0, pShutdownIcon->GetResString( STR_QUICKSTART_PRELAUNCH ), pos, false, "" );
+    addMenuItem( hMenu, static_cast< UINT >( -1 ), 0, OUString(), pos, false, "" );
+    addMenuItem( hMenu, IDM_EXIT,   0, pShutdownIcon->GetResString( STR_QUICKSTART_EXIT ), pos, false, "" );
 
     // indicate status of autostart folder
     CheckMenuItem( hMenu, IDM_INSTALL, MF_BYCOMMAND | (ShutdownIcon::GetAutostart() ? MF_CHECKED : MF_UNCHECKED) );
diff --git a/sfx2/source/dialog/dinfdlg.cxx b/sfx2/source/dialog/dinfdlg.cxx
index 408a34346491..43fd167fbe6e 100644
--- a/sfx2/source/dialog/dinfdlg.cxx
+++ b/sfx2/source/dialog/dinfdlg.cxx
@@ -840,9 +840,8 @@ IMPL_LINK_NOARG_TYPED(SfxDocumentPage, DeleteHdl, Button*, void)
     DateTime now( DateTime::SYSTEM );
     util::DateTime uDT( now.GetUNODateTime() );
     m_pCreateValFt->SetText( ConvertDateTime_Impl( aName, uDT, rLocaleWrapper ) );
-    OUString aEmpty;
-    m_pChangeValFt->SetText( aEmpty );
-    m_pPrintValFt->SetText( aEmpty );
+    m_pChangeValFt->SetText( "" );
+    m_pPrintValFt->SetText( "" );
     const tools::Time aTime( 0 );
     m_pTimeLogValFt->SetText( rLocaleWrapper.getDuration( aTime ) );
     m_pDocNoValFt->SetText(OUString('1'));
diff --git a/sfx2/source/dialog/templdlg.cxx b/sfx2/source/dialog/templdlg.cxx
index ffc5674bc61d..ba176f00cce7 100644
--- a/sfx2/source/dialog/templdlg.cxx
+++ b/sfx2/source/dialog/templdlg.cxx
@@ -879,14 +879,13 @@ void SfxCommonTemplateDialog_Impl::Initialize()
 
 SfxCommonTemplateDialog_Impl::~SfxCommonTemplateDialog_Impl()
 {
-    OUString aEmpty;
 #if defined STYLESPREVIEW
     Execute_Impl(SID_STYLE_END_PREVIEW,
         OUString(), OUString(),
         0, 0, 0, 0 );
 #endif
     if ( bIsWater )
-        Execute_Impl(SID_STYLE_WATERCAN, aEmpty, aEmpty, 0);
+        Execute_Impl(SID_STYLE_WATERCAN, "", "", 0);
     GetWindow()->Hide();
     impl_clear();
     if ( pStyleSheetPool )
@@ -1732,7 +1731,6 @@ void SfxCommonTemplateDialog_Impl::FamilySelect(sal_uInt16 nEntry)
 
 void SfxCommonTemplateDialog_Impl::ActionSelect(sal_uInt16 nEntry)
 {
-    OUString aEmpty;
     switch(nEntry)
     {
         case SID_STYLE_WATERCAN:
@@ -1746,13 +1744,13 @@ void SfxCommonTemplateDialog_Impl::ActionSelect(sal_uInt16 nEntry)
                 const OUString aTemplName(
                     GetSelectedEntry());
                 Execute_Impl(
-                    SID_STYLE_WATERCAN, aTemplName, aEmpty,
+                    SID_STYLE_WATERCAN, aTemplName, "",
                     (sal_uInt16)GetFamilyItem_Impl()->GetFamily() );
                 bCheck = true;
             }
             else
             {
-                Execute_Impl(SID_STYLE_WATERCAN, aEmpty, aEmpty, 0);
+                Execute_Impl(SID_STYLE_WATERCAN, "", "", 0);
                 bCheck = false;
             }
             CheckItem(nEntry, bCheck);
@@ -1784,7 +1782,7 @@ void SfxCommonTemplateDialog_Impl::ActionSelect(sal_uInt16 nEntry)
                     pStyleSheetPool->SetSearchMask(eFam, nFilter);
                     const OUString aTemplName(pDlg->GetName());
                     Execute_Impl(SID_STYLE_NEW_BY_EXAMPLE,
-                                 aTemplName, aEmpty,
+                                 aTemplName, "",
                                  (sal_uInt16)GetFamilyItem_Impl()->GetFamily(),
                                  nFilter);
                 }
@@ -1795,7 +1793,7 @@ void SfxCommonTemplateDialog_Impl::ActionSelect(sal_uInt16 nEntry)
         case SID_STYLE_UPDATE_BY_EXAMPLE:
         {
             Execute_Impl(SID_STYLE_UPDATE_BY_EXAMPLE,
-                    aEmpty, aEmpty,
+                    "", "",
                     (sal_uInt16)GetFamilyItem_Impl()->GetFamily());
             break;
         }
@@ -1880,7 +1878,6 @@ IMPL_LINK( SfxCommonTemplateDialog_Impl, DropHdl, StyleTreeListBox_Impl *, pBox
 // Handler for the New-Buttons
 void SfxCommonTemplateDialog_Impl::NewHdl(void *)
 {
-    OUString aEmpty;
     if ( nActFamily != 0xffff && (pTreeBox || aFmtLb->GetSelectionCount() <= 1))
     {
         vcl::Window* pTmp;
@@ -1905,7 +1902,7 @@ void SfxCommonTemplateDialog_Impl::NewHdl(void *)
         pStyleSheetPool->SetSearchMask(eFam,nMask);
 
         Execute_Impl(SID_STYLE_NEW,
-                     aEmpty, GetSelectedEntry(),
+                     "", GetSelectedEntry(),
                      ( sal_uInt16 )GetFamilyItem_Impl()->GetFamily(),
                      nMask);
 
@@ -2120,11 +2117,10 @@ IMPL_LINK( SfxCommonTemplateDialog_Impl, FmtSelectHdl, SvTreeListBox *, pListBox
              // only if that region is allowed
              0 != pFamilyState[nActFamily-1] && (pTreeBox || aFmtLb->GetSelectionCount() <= 1) )
         {
-            OUString aEmpty;
             Execute_Impl(SID_STYLE_WATERCAN,
-                         aEmpty, aEmpty, 0);
+                         "", "", 0);
             Execute_Impl(SID_STYLE_WATERCAN,
-                         GetSelectedEntry(), aEmpty,
+                         GetSelectedEntry(), "",
                          ( sal_uInt16 )GetFamilyItem_Impl()->GetFamily());
         }
         EnableItem(SID_STYLE_WATERCAN, !bWaterDisabled);
@@ -2415,12 +2411,11 @@ Size SfxTemplateDialog_Impl::GetMinOutputSizePixel()
 
 void SfxTemplateDialog_Impl::EnableItem(sal_uInt16 nMesId, bool bCheck)
 {
-    OUString aEmpty;
     switch(nMesId)
     {
         case SID_STYLE_WATERCAN :
             if(!bCheck && IsCheckedItem(SID_STYLE_WATERCAN))
-                Execute_Impl(SID_STYLE_WATERCAN, aEmpty, aEmpty, 0);
+                Execute_Impl(SID_STYLE_WATERCAN, "", "", 0);
             //fall-through
         case SID_STYLE_NEW_BY_EXAMPLE:
         case SID_STYLE_UPDATE_BY_EXAMPLE:
diff --git a/sfx2/source/doc/doctempl.cxx b/sfx2/source/doc/doctempl.cxx
index b3a1dd0b5c8f..ade4fa4a1684 100644
--- a/sfx2/source/doc/doctempl.cxx
+++ b/sfx2/source/doc/doctempl.cxx
@@ -1059,7 +1059,6 @@ bool SfxDocumentTemplates::SetName( const OUString& rName, sal_uInt16 nRegion, s
         return false;
 
     uno::Reference< XDocumentTemplates > xTemplates = pImp->getDocTemplates();
-    OUString aEmpty;
 
     if ( nIdx == USHRT_MAX )
     {
@@ -1070,8 +1069,8 @@ bool SfxDocumentTemplates::SetName( const OUString& rName, sal_uInt16 nRegion, s
         if ( xTemplates->renameGroup( pRegion->GetTitle(), rName ) )
         {
             pRegion->SetTitle( rName );
-            pRegion->SetTargetURL( aEmpty );
-            pRegion->SetHierarchyURL( aEmpty );
+            pRegion->SetTargetURL( "" );
+            pRegion->SetHierarchyURL( "" );
             return true;
         }
     }
@@ -1090,8 +1089,8 @@ bool SfxDocumentTemplates::SetName( const OUString& rName, sal_uInt16 nRegion, s
                                          rName ) )
         {
             pEntry->SetTitle( rName );
-            pEntry->SetTargetURL( aEmpty );
-            pEntry->SetHierarchyURL( aEmpty );
+            pEntry->SetTargetURL( "" );
+            pEntry->SetHierarchyURL( "" );
             return true;
         }
     }
diff --git a/svtools/source/control/inettbc.cxx b/svtools/source/control/inettbc.cxx
index c0753a61047a..cd04a853279c 100644
--- a/svtools/source/control/inettbc.cxx
+++ b/svtools/source/control/inettbc.cxx
@@ -694,7 +694,7 @@ void SvtMatchContext_Impl::doExecute()
     bool bFull = false;
 
     INetURLObject aCurObj;
-    OUString aEmpty, aCurString, aCurMainURL;
+    OUString aCurString, aCurMainURL;
     INetURLObject aObj;
     aObj.SetSmartProtocol( eSmartProt == INetProtocol::NotValid ? INetProtocol::Http : eSmartProt );
     for( ;; )
@@ -735,9 +735,9 @@ void SvtMatchContext_Impl::doExecute()
                                 aMatch = aCurObj.GetMainURL( INetURLObject::NO_DECODE );
                             else
                             {
-                                aCurObj.SetMark( aEmpty );
-                                aCurObj.SetParam( aEmpty );
-                                aCurObj.SetURLPath( aEmpty );
+                                aCurObj.SetMark( "" );
+                                aCurObj.SetParam( "" );
+                                aCurObj.SetURLPath( "" );
                                 aMatch = aCurObj.GetMainURL( INetURLObject::NO_DECODE );
                             }
 
@@ -754,9 +754,9 @@ void SvtMatchContext_Impl::doExecute()
                             aMatch = aCurObj.GetMainURL( INetURLObject::NO_DECODE );
                         else
                         {
-                            aCurObj.SetMark( aEmpty );
-                            aCurObj.SetParam( aEmpty );
-                            aCurObj.SetURLPath( aEmpty );
+                            aCurObj.SetMark( "" );
+                            aCurObj.SetParam( "" );
+                            aCurObj.SetURLPath( "" );
                             aMatch = aCurObj.GetMainURL( INetURLObject::NO_DECODE );
                         }
 
diff --git a/svx/source/dialog/passwd.cxx b/svx/source/dialog/passwd.cxx
index ebb736cdbfbe..bca9ea1bc39c 100644
--- a/svx/source/dialog/passwd.cxx
+++ b/svx/source/dialog/passwd.cxx
@@ -27,13 +27,12 @@ IMPL_LINK_NOARG_TYPED(SvxPasswordDialog, ButtonHdl, Button*, void)
 {
     bool bOK = true;
     short nRet = RET_OK;
-    OUString aEmpty;
 
     if ( m_pNewPasswdED->GetText() != m_pRepeatPasswdED->GetText() )
     {
         ScopedVclPtrInstance<MessageDialog>::Create(this, aRepeatPasswdErrStr)->Execute();
-        m_pNewPasswdED->SetText( aEmpty );
-        m_pRepeatPasswdED->SetText( aEmpty );
+        m_pNewPasswdED->SetText( "" );
+        m_pRepeatPasswdED->SetText( "" );
         m_pNewPasswdED->GrabFocus();
         bOK = false;
     }
@@ -41,7 +40,7 @@ IMPL_LINK_NOARG_TYPED(SvxPasswordDialog, ButtonHdl, Button*, void)
     if ( bOK && aCheckPasswordHdl.IsSet() && !aCheckPasswordHdl.Call( this ) )
     {
         ScopedVclPtrInstance<MessageDialog>::Create(this, aOldPasswdErrStr)->Execute();
-        m_pOldPasswdED->SetText( aEmpty );
+        m_pOldPasswdED->SetText( "" );
         m_pOldPasswdED->GrabFocus();
         bOK = false;
     }
diff --git a/svx/source/svdraw/svdmodel.cxx b/svx/source/svdraw/svdmodel.cxx
index ff9004e7cba1..5478cdc43d93 100644
--- a/svx/source/svdraw/svdmodel.cxx
+++ b/svx/source/svdraw/svdmodel.cxx
@@ -479,8 +479,7 @@ void SdrModel::BegUndo()
 {
     if( mpImpl->mpUndoManager )
     {
-        const OUString aEmpty;
-        mpImpl->mpUndoManager->EnterListAction(aEmpty,aEmpty);
+        mpImpl->mpUndoManager->EnterListAction("","");
         nUndoLevel++;
     }
     else if( IsUndoEnabled() )
@@ -501,8 +500,7 @@ void SdrModel::BegUndo(const OUString& rComment)
 {
     if( mpImpl->mpUndoManager )
     {
-        const OUString aEmpty;
-        mpImpl->mpUndoManager->EnterListAction( rComment, aEmpty );
+        mpImpl->mpUndoManager->EnterListAction( rComment, "" );
         nUndoLevel++;
     }
     else if( IsUndoEnabled() )
@@ -524,8 +522,7 @@ void SdrModel::BegUndo(const OUString& rComment, const OUString& rObjDescr, SdrR
         {
             aComment = aComment.replaceFirst("%1", rObjDescr);
         }
-        const OUString aEmpty;
-        mpImpl->mpUndoManager->EnterListAction( aComment,aEmpty );
+        mpImpl->mpUndoManager->EnterListAction( aComment,"" );
         nUndoLevel++;
     }
     else if( IsUndoEnabled() )
diff --git a/svx/source/tbxctrls/extrusioncontrols.cxx b/svx/source/tbxctrls/extrusioncontrols.cxx
index 0582dc24cf31..80575617116b 100644
--- a/svx/source/tbxctrls/extrusioncontrols.cxx
+++ b/svx/source/tbxctrls/extrusioncontrols.cxx
@@ -347,12 +347,11 @@ ExtrusionDepthWindow::ExtrusionDepthWindow(
 {
     SetSelectHdl( LINK( this, ExtrusionDepthWindow, SelectHdl ) );
 
-    OUString aEmpty;
-    appendEntry(0, aEmpty, maImgDepth0);
-    appendEntry(1, aEmpty, maImgDepth1);
-    appendEntry(2, aEmpty, maImgDepth2);
-    appendEntry(3, aEmpty, maImgDepth3);
-    appendEntry(4, aEmpty, maImgDepth4);
+    appendEntry(0, "", maImgDepth0);
+    appendEntry(1, "", maImgDepth1);
+    appendEntry(2, "", maImgDepth2);
+    appendEntry(3, "", maImgDepth3);
+    appendEntry(4, "", maImgDepth4);
     appendEntry(5, SVX_RESSTR(RID_SVXSTR_INFINITY), maImgDepthInfinity);
     appendEntry(6, SVX_RESSTR(RID_SVXSTR_CUSTOM));
 
diff --git a/svx/source/unodraw/unoshape.cxx b/svx/source/unodraw/unoshape.cxx
index bea3c9c49d7f..35423a2f8b80 100644
--- a/svx/source/unodraw/unoshape.cxx
+++ b/svx/source/unodraw/unoshape.cxx
@@ -1581,12 +1581,11 @@ bool SAL_CALL SvxShape::SetFillAttribute( sal_Int32 nWID, const OUString& rName,
         case XATTR_LINEEND:
         case XATTR_LINESTART:
             {
-                const OUString aEmpty;
                 const basegfx::B2DPolyPolygon aEmptyPoly;
                 if( nWID == XATTR_LINEEND )
-                    rSet.Put( XLineEndItem( aEmpty, aEmptyPoly ) );
+                    rSet.Put( XLineEndItem( "", aEmptyPoly ) );
                 else
-                    rSet.Put( XLineStartItem( aEmpty, aEmptyPoly ) );
+                    rSet.Put( XLineStartItem( "", aEmptyPoly ) );
 
                 return true;
             }
diff --git a/xmloff/source/draw/shapeexport.cxx b/xmloff/source/draw/shapeexport.cxx
index 96b673d3755b..7ed11ef9df45 100644
--- a/xmloff/source/draw/shapeexport.cxx
+++ b/xmloff/source/draw/shapeexport.cxx
@@ -484,12 +484,11 @@ void XMLShapeExport::collectShapeAutoStyles(const uno::Reference< drawing::XShap
 
             if( nCount )
             {
-                const OUString aEmpty;
-                aShapeInfo.msTextStyleName = mrExport.GetAutoStylePool()->Find( XML_STYLE_FAMILY_TEXT_PARAGRAPH, aEmpty, xPropStates );
+                aShapeInfo.msTextStyleName = mrExport.GetAutoStylePool()->Find( XML_STYLE_FAMILY_TEXT_PARAGRAPH, "", xPropStates );
                 if(aShapeInfo.msTextStyleName.isEmpty())
                 {
                     // Style did not exist, add it to AutoStalePool
-                    aShapeInfo.msTextStyleName = mrExport.GetAutoStylePool()->Add(XML_STYLE_FAMILY_TEXT_PARAGRAPH, aEmpty, xPropStates);
+                    aShapeInfo.msTextStyleName = mrExport.GetAutoStylePool()->Add(XML_STYLE_FAMILY_TEXT_PARAGRAPH, "", xPropStates);
                 }
             }
         }