4 files changed, 10 insertions, 10 deletions
diff --git a/sfx2/source/appl/sfxhelp.cxx b/sfx2/source/appl/sfxhelp.cxx
index c8ea5cf45cd3..5a26931d3f66 100644
--- a/sfx2/source/appl/sfxhelp.cxx
+++ b/sfx2/source/appl/sfxhelp.cxx
@@ -961,7 +961,7 @@ static bool impl_showOfflineHelp(const OUString& rURL, weld::Widget* pDialogPare
     if (flatpak::isFlatpak() && !flatpak::createTemporaryHtmlDirectory(&parent)) {
         return false;
     }
-    ::utl::TempFile aTempFile("NewHelp", true, &aExtension, parent, false );
+    ::utl::TempFile aTempFile(u"NewHelp", true, &aExtension, parent, false );
 
     SvStream* pStream = aTempFile.GetStream(StreamMode::WRITE);
     pStream->SetStreamCharSet(RTL_TEXTENCODING_UTF8);
diff --git a/sfx2/source/dialog/filedlghelper.cxx b/sfx2/source/dialog/filedlghelper.cxx
index 06e9809d1d44..5b0ee7e97b9d 100644
--- a/sfx2/source/dialog/filedlghelper.cxx
+++ b/sfx2/source/dialog/filedlghelper.cxx
@@ -2398,7 +2398,7 @@ FileDialogHelper::FileDialogHelper(
     sal_Int16 nDialogType,
     FileDialogFlags nFlags,
     const OUString& aFilterUIName,
-    const OUString& aExtName,
+    std::u16string_view aExtName,
     const OUString& rStandardDir,
     const css::uno::Sequence< OUString >& rDenyList,
     weld::Window* pPreferredParent )
@@ -2407,9 +2407,9 @@ FileDialogHelper::FileDialogHelper(
 {
     // the wildcard here is expected in form "*.extension"
     OUString aWildcard;
-    if ( aExtName.indexOf( '*' ) != 0 )
+    if ( aExtName.find( '*' ) != 0 )
     {
-        if ( !aExtName.isEmpty() && aExtName.indexOf( '.' ) != 0 )
+        if ( !aExtName.empty() && aExtName.find( '.' ) != 0 )
             aWildcard = "*.";
         else
             aWildcard = "*";
@@ -2848,7 +2848,7 @@ ErrCode FileOpenDialog_Impl( weld::Window* pParent,
     // read-only to discourage editing (which would invalidate existing
     // signatures).
     if (nFlags & FileDialogFlags::SignPDF)
-        pDialog.reset(new FileDialogHelper(nDialogType, nFlags, SfxResId(STR_SFX_FILTERNAME_PDF), "pdf", rStandardDir, rDenyList, pParent));
+        pDialog.reset(new FileDialogHelper(nDialogType, nFlags, SfxResId(STR_SFX_FILTERNAME_PDF), u"pdf", rStandardDir, rDenyList, pParent));
     else
         pDialog.reset(new FileDialogHelper(nDialogType, nFlags, OUString(), nDialog, SfxFilterFlags::NONE, SfxFilterFlags::NONE, rStandardDir, rDenyList, pParent));
 
diff --git a/sfx2/source/doc/docfile.cxx b/sfx2/source/doc/docfile.cxx
index 61d8c38b3582..baa82c0bc0b3 100644
--- a/sfx2/source/doc/docfile.cxx
+++ b/sfx2/source/doc/docfile.cxx
@@ -2513,7 +2513,7 @@ void SfxMedium::Transfer_Impl()
 
 
 void SfxMedium::DoInternalBackup_Impl( const ::ucbhelper::Content& aOriginalContent,
-                                       const OUString& aPrefix,
+                                       std::u16string_view aPrefix,
                                        const OUString& aExtension,
                                        const OUString& aDestDir )
 {
@@ -4271,7 +4271,7 @@ OUString SfxMedium::CreateTempCopyWithExt( const OUString& aURL )
         sal_Int32 nPrefixLen = aURL.lastIndexOf( '.' );
         OUString aExt = ( nPrefixLen == -1 ) ? OUString() :  aURL.copy( nPrefixLen );
 
-        OUString aNewTempFileURL = ::utl::TempFile( OUString(), true, &aExt ).GetURL();
+        OUString aNewTempFileURL = ::utl::TempFile( u"", true, &aExt ).GetURL();
         if ( !aNewTempFileURL.isEmpty() )
         {
             INetURLObject aSource( aURL );
@@ -4344,7 +4344,7 @@ OUString SfxMedium::SwitchDocumentToTempFile()
         OUString const aExt = (nPrefixLen == -1)
                                 ? OUString()
                                 : aOrigURL.copy(nPrefixLen);
-        OUString aNewURL = ::utl::TempFile( OUString(), true, &aExt ).GetURL();
+        OUString aNewURL = ::utl::TempFile( u"", true, &aExt ).GetURL();
 
         // TODO/LATER: In future the aLogicName should be set to shared folder URL
         //             and a temporary file should be created. Transport_Impl should be impossible then.
diff --git a/sfx2/source/doc/guisaveas.cxx b/sfx2/source/doc/guisaveas.cxx
index 0aa47efe74e0..d3c862a01ce5 100644
--- a/sfx2/source/doc/guisaveas.cxx
+++ b/sfx2/source/doc/guisaveas.cxx
@@ -863,14 +863,14 @@ bool ModelData_Impl::OutputFileDialog( sal_Int16 nStoreMode,
             // this is a PDF export
             // the filter options has been shown already
             const OUString aFilterUIName = aPreselectedFilterPropsHM.getUnpackedValueOrDefault( "UIName", OUString() );
-            pFileDlg.reset(new sfx2::FileDialogHelper( aDialogMode, aDialogFlags, aFilterUIName, "pdf", rStandardDir, rDenyList, pFrameWin ));
+            pFileDlg.reset(new sfx2::FileDialogHelper( aDialogMode, aDialogFlags, aFilterUIName, u"pdf", rStandardDir, rDenyList, pFrameWin ));
             pFileDlg->SetCurrentFilter( aFilterUIName );
         }
         else if ((nStoreMode & EPUBEXPORT_REQUESTED) && !aPreselectedFilterPropsHM.empty())
         {
             // This is an EPUB export, the filter options has been shown already.
             const OUString aFilterUIName = aPreselectedFilterPropsHM.getUnpackedValueOrDefault( "UIName", OUString() );
-            pFileDlg.reset(new sfx2::FileDialogHelper(aDialogMode, aDialogFlags, aFilterUIName, "epub", rStandardDir, rDenyList, pFrameWin));
+            pFileDlg.reset(new sfx2::FileDialogHelper(aDialogMode, aDialogFlags, aFilterUIName, u"epub", rStandardDir, rDenyList, pFrameWin));
             pFileDlg->SetCurrentFilter(aFilterUIName);
         }
         else