diff --git a/ZRCola/zrcolachrgrid.cpp b/ZRCola/zrcolachrgrid.cpp
index 116c043..1854d46 100644
--- a/ZRCola/zrcolachrgrid.cpp
+++ b/ZRCola/zrcolachrgrid.cpp
@@ -100,13 +100,10 @@ wxString wxZRColaCharGrid::GetToolTipText(int idx)
     ZRColaApp *app = (ZRColaApp*)wxTheApp;
 
     // See if this character has a key sequence registered.
-    ZRCola::keyseq_db::indexKey::size_type start;
-    bool found;
     char ks[sizeof(ZRCola::keyseq_db::keyseq)] = {};
     ((ZRCola::keyseq_db::keyseq*)ks)->chr = m_chars[idx];
-    found = app->m_ks_db.idxChr.find(*(ZRCola::keyseq_db::keyseq*)ks, start);
-
-    if (found) {
+    ZRCola::keyseq_db::indexKey::size_type start;
+    if (app->m_ks_db.idxChr.find(*(ZRCola::keyseq_db::keyseq*)ks, start)) {
         ZRCola::keyseq_db::keyseq &seq = app->m_ks_db.idxChr[start];
         wxString ks_str;
         if (ZRCola::keyseq_db::GetSequenceAsText(seq.seq, seq.seq_len, ks_str))
diff --git a/ZRCola/zrcolachrslct.cpp b/ZRCola/zrcolachrslct.cpp
index 53800be..94c9c75 100644
--- a/ZRCola/zrcolachrslct.cpp
+++ b/ZRCola/zrcolachrslct.cpp
@@ -43,7 +43,7 @@ wxZRColaCharSelect::wxZRColaCharSelect(wxWindow* parent) :
     // Fill categories.
     ZRColaApp *app = (ZRColaApp*)wxTheApp;
     for (size_t i = 0, n = app->m_cc_db.idxRnk.size(); i < n; i++) {
-        const ZRCola::chrcat_db::chrcat &cc = app->m_cc_db.idxRnk[i];
+        const auto &cc = app->m_cc_db.idxRnk[i];
         int idx = m_categories->Insert(wxGetTranslation(wxString(cc.name, cc.name_len), wxT("ZRCola-zrcdb")), i);
         m_categories->Check(idx);
         m_ccOrder.insert(std::make_pair(cc.id, idx));
@@ -82,14 +82,14 @@ void wxZRColaCharSelect::OnIdle(wxIdleEvent& event)
             ((ZRCola::character_db::character*)chr)->chr = m_char;
             size_t start;
             if (app->m_chr_db.idxChr.find(*(ZRCola::character_db::character*)chr, start)) {
-                const ZRCola::character_db::character &chr = app->m_chr_db.idxChr[start];
+                const auto &chr = app->m_chr_db.idxChr[start];
                 // Update characted description.
                 m_description->SetValue(wxString(chr.data, chr.desc_len));
                 {
                     // See if this character has a key sequence registered.
-                    ZRCola::keyseq_db::indexKey::size_type start;
                     char ks[sizeof(ZRCola::keyseq_db::keyseq)] = {};
                     ((ZRCola::keyseq_db::keyseq*)ks)->chr = m_char;
+                    ZRCola::keyseq_db::indexKey::size_type start;
                     if (app->m_ks_db.idxChr.find(*(ZRCola::keyseq_db::keyseq*)ks, start)) {
                         ZRCola::keyseq_db::keyseq &seq = app->m_ks_db.idxChr[start];
                         wxString ks_str;
@@ -106,7 +106,7 @@ void wxZRColaCharSelect::OnIdle(wxIdleEvent& event)
                     size_t start;
                     // Update character category.
                     if (app->m_cc_db.idxChrCat.find(*((ZRCola::chrcat_db::chrcat*)cc), start)) {
-                        const ZRCola::chrcat_db::chrcat &cat = app->m_cc_db.idxChrCat[start];
+                        const auto &cat = app->m_cc_db.idxChrCat[start];
                         m_category->SetValue(wxGetTranslation(wxString(cat.name, cat.name_len), wxT("ZRCola-zrcdb")));
                     } else
                         m_category->SetValue(wxEmptyString);
@@ -145,7 +145,7 @@ void wxZRColaCharSelect::OnIdle(wxIdleEvent& event)
 
             // Select categories.
             for (size_t i = 0, n = app->m_cc_db.idxRnk.size(); i < n; i++) {
-                const ZRCola::chrcat_db::chrcat &cc = app->m_cc_db.idxRnk[i];
+                const auto &cc = app->m_cc_db.idxRnk[i];
                 if (m_categories->IsChecked(i))
                     m_searchThread->m_cats.insert(cc.id);
             }
@@ -239,7 +239,7 @@ void wxZRColaCharSelect::OnSearchComplete(wxThreadEvent& event)
         // Display results.
         wxString chars;
         chars.reserve(m_searchThread->m_hits.size());
-        for (std::vector<std::pair<ZRCola::charrank_t, wchar_t> >::const_iterator i = m_searchThread->m_hits.cbegin(), i_end = m_searchThread->m_hits.cend(); i != i_end; ++i)
+        for (auto i = m_searchThread->m_hits.cbegin(), i_end = m_searchThread->m_hits.cend(); i != i_end; ++i)
             chars += i->second;
         m_gridResults->SetCharacters(chars);
 
@@ -413,8 +413,8 @@ void wxZRColaCharSelect::ResetResults()
     wxString val;
     val.reserve(n);
     for (i = 0; i < n; i++) {
-        const ZRCola::character_db::character &chr = app->m_chr_db.idxChr[i];
-        std::map<ZRCola::chrcatid_t, int>::const_iterator idx = m_ccOrder.find(chr.cat);
+        const auto &chr = app->m_chr_db.idxChr[i];
+        auto idx = m_ccOrder.find(chr.cat);
         if (idx == m_ccOrder.end() || m_categories->IsChecked(idx->second))
             val += chr.chr;
     }
@@ -450,7 +450,7 @@ void wxZRColaCharSelect::NavigateBy(int offset)
         }
 
         m_navigateBack->Enable(m_historyCursor != m_history.begin());
-        std::list<NavigationState>::iterator cursor_next(m_historyCursor);
+        auto cursor_next = m_historyCursor;
         ++cursor_next;
         m_navigateForward->Enable(cursor_next != m_history.end());
 
@@ -477,7 +477,7 @@ void wxZRColaCharSelect::NavigateTo(wchar_t c)
         m_historyCursor = m_history.insert(m_historyCursor, state);
 
         // Purge the history's tail.
-        std::list<NavigationState>::iterator cursor_next(m_historyCursor);
+        auto cursor_next = m_historyCursor;
         ++cursor_next;
         m_history.erase(cursor_next, m_history.end());
 
@@ -509,9 +509,9 @@ wxThread::ExitCode wxZRColaCharSelect::SearchThread::Entry()
         // Search by indexes and merge results.
         std::map<wchar_t, ZRCola::charrank_t> hits_sub;
         if (!app->m_chr_db.Search(m_search.c_str(), m_cats, hits, hits_sub, TestDestroyS, this)) return (wxThread::ExitCode)1;
-        for (std::map<wchar_t, ZRCola::charrank_t>::const_iterator i = hits_sub.cbegin(), i_end = hits_sub.cend(); i != i_end; ++i) {
+        for (auto i = hits_sub.cbegin(), i_end = hits_sub.cend(); i != i_end; ++i) {
             if (TestDestroy()) return (wxThread::ExitCode)1;
-            std::map<wchar_t, ZRCola::charrank_t>::iterator idx = hits.find(i->first);
+            auto idx = hits.find(i->first);
             if (idx == hits.end())
                 hits.insert(std::make_pair(i->first, i->second / 4));
             else
@@ -521,7 +521,7 @@ wxThread::ExitCode wxZRColaCharSelect::SearchThread::Entry()
 
     // Get best rank.
     ZRCola::charrank_t rank_ref = 0;
-    for (std::map<wchar_t, ZRCola::charrank_t>::const_iterator i = hits.cbegin(), i_end = hits.cend(); i != i_end; ++i) {
+    for (auto i = hits.cbegin(), i_end = hits.cend(); i != i_end; ++i) {
         if (TestDestroy()) return (wxThread::ExitCode)1;
         if (i->second > rank_ref)
             rank_ref = i->second;
@@ -530,7 +530,7 @@ wxThread::ExitCode wxZRColaCharSelect::SearchThread::Entry()
     // Now sort the characters by rank (taking only top 3/4 by rank).
     ZRCola::charrank_t rank_threshold = rank_ref*3/4;
     m_hits.reserve(hits.size());
-    for (std::map<wchar_t, ZRCola::charrank_t>::const_iterator i = hits.cbegin(), i_end = hits.cend(); i != i_end; ++i) {
+    for (auto i = hits.cbegin(), i_end = hits.cend(); i != i_end; ++i) {
         if (TestDestroy()) return (wxThread::ExitCode)1;
         if (i->second > rank_threshold)
             m_hits.push_back(std::make_pair(i->second, i->first));
@@ -586,7 +586,7 @@ void wxPersistentZRColaCharSelect::Save() const
 
     ZRColaApp *app = (ZRColaApp*)wxTheApp;
     for (size_t i = 0, n = app->m_cc_db.idxRnk.size(); i < n; i++) {
-        const ZRCola::chrcat_db::chrcat &cc = app->m_cc_db.idxRnk[i];
+        const auto &cc = app->m_cc_db.idxRnk[i];
         wxString name(wxT("category"));
         name.Append(cc.id.data, _countof(cc.id.data));
         SaveValue(name, wnd->m_categories->IsChecked(i));
@@ -606,7 +606,7 @@ bool wxPersistentZRColaCharSelect::Restore()
 
     ZRColaApp *app = (ZRColaApp*)wxTheApp;
     for (size_t i = 0, n = app->m_cc_db.idxRnk.size(); i < n; i++) {
-        const ZRCola::chrcat_db::chrcat &cc = app->m_cc_db.idxRnk[i];
+        const auto &cc = app->m_cc_db.idxRnk[i];
         wxString name(wxT("category"));
         name.Append(cc.id.data, _countof(cc.id.data));
         bool val;
diff --git a/ZRCola/zrcolafrm.cpp b/ZRCola/zrcolafrm.cpp
index a72f551..b8a31e3 100644
--- a/ZRCola/zrcolafrm.cpp
+++ b/ZRCola/zrcolafrm.cpp
@@ -459,7 +459,7 @@ void wxZRColaFrame::DoSend(const wxString& str)
 {
     // Prepare the INPUT table.
     wxString::size_type n = str.length();
-    wxString::const_iterator i_str = str.begin();
+    auto i_str = str.begin();
     std::vector<INPUT> input;
     input.reserve(n*2);
     for (std::vector<INPUT>::size_type i = 0; i < n; i++, i_str++) {
diff --git a/ZRCola/zrcolakeyhndlr.cpp b/ZRCola/zrcolakeyhndlr.cpp
index 184a369..68816d5 100644
--- a/ZRCola/zrcolakeyhndlr.cpp
+++ b/ZRCola/zrcolakeyhndlr.cpp
@@ -96,7 +96,7 @@ bool wxZRColaKeyHandler::ProcessEvent(wxEvent& event)
                     (e.AltDown()     ? ZRCola::keyseq_db::keyseq::ALT   : 0);
                 m_seq.push_back(key);
 
-                std::vector<ZRCola::keyseq_db::keyseq::key_t>::size_type n = m_seq.size();
+                auto n = m_seq.size();
                 ZRCola::keyseq_db::keyseq *ks = (ZRCola::keyseq_db::keyseq*)new char[sizeof(ZRCola::keyseq_db::keyseq) + sizeof(ZRCola::keyseq_db::keyseq::key_t)*n];
                 ks->chr = 0;
                 ks->seq_len = n;
@@ -147,7 +147,7 @@ bool wxZRColaKeyHandler::ProcessEvent(wxEvent& event)
             if (pFrame && pFrame->GetStatusBar())
                 pFrame->SetStatusText(wxEmptyString);
 
-            std::vector<char>::size_type count = m_insert_seq.size();
+            auto count = m_insert_seq.size();
             if (count) {
                 // Zero terminate sequence and parse the Unicode value.
                 m_insert_seq.push_back(0);
diff --git a/ZRCola/zrcolasettings.cpp b/ZRCola/zrcolasettings.cpp
index a657f8e..3f3bdba 100644
--- a/ZRCola/zrcolasettings.cpp
+++ b/ZRCola/zrcolasettings.cpp
@@ -32,7 +32,7 @@ wxZRColaSettings::wxZRColaSettings(wxWindow* parent) :
     ZRColaApp *app = ((ZRColaApp*)wxTheApp);
     m_languages->Clear();
     for (size_t i = 0, n = app->m_lang_db.idxLng.size(); i < n; i++) {
-        const ZRCola::language_db::language &lang = app->m_lang_db.idxLng[i];
+        const auto &lang = app->m_lang_db.idxLng[i];
         wxString
             label(lang.name, lang.name_len),
             label_tran(wxGetTranslation(label, wxT("ZRCola-zrcdb")));
@@ -122,7 +122,7 @@ void wxZRColaSettings::OnApplyButtonClick(wxCommandEvent& event)
         m_lang_auto = false;
 
         ZRColaApp *app = ((ZRColaApp*)wxTheApp);
-        const ZRCola::language_db::language &lang = app->m_lang_db.idxLng[m_languages->GetSelection()];
+        const auto &lang = app->m_lang_db.idxLng[m_languages->GetSelection()];
 
         if (m_lang != lang.id) {
             m_lang = lang.id;
@@ -181,7 +181,7 @@ bool wxPersistentZRColaSettings::Restore()
         // The language was read from configuration.
         wnd->m_lang = lang.c_str();
     } else if (!app->m_lang_db.idxLng.empty()) {
-        const ZRCola::language_db::language &lang = app->m_lang_db.idxLng[0];
+        const auto &lang = app->m_lang_db.idxLng[0];
         wnd->m_lang = lang.id;
     } else
         wnd->m_lang = ZRCola::langid_t_blank;
diff --git a/ZRColaCompile/dbsource.cpp b/ZRColaCompile/dbsource.cpp
index 3c47436..01b947b 100644
--- a/ZRColaCompile/dbsource.cpp
+++ b/ZRColaCompile/dbsource.cpp
@@ -96,13 +96,13 @@ unsigned int ZRCola::DBSource::character_bank::build_related_worker::process()
     set<wstring, less<wstring>, heap_allocator<wstring> > matching(less<wstring>(), al);
 
     for (size_type i = m_from; i < m_to; i++) {
-        ZRCola::DBSource::character &chr = *(m_cb->at(i).get());
+        auto &chr = *(m_cb->at(i).get());
         if (&chr == NULL) continue;
 
         rel.clear();
 
         // Remove all unexisting, inactive, or self related characters.
-        for (wstring::size_type j = chr.rel.length(); j--;) {
+        for (auto j = chr.rel.length(); j--;) {
             wchar_t c = chr.rel[j];
             if (m_cb->at(c) && (wchar_t)j != c)
                 rel += c;
@@ -112,17 +112,17 @@ unsigned int ZRCola::DBSource::character_bank::build_related_worker::process()
         for (size_type j = 0, j_end = m_cb->size(); j < j_end; j++) {
             if (i == j || rel.find((wchar_t)j) != wstring::npos)
                 continue;
-            const ZRCola::DBSource::character &chr2 = *(m_cb->at(j).get());
+            const auto &chr2 = *(m_cb->at(j).get());
             if (&chr2 == NULL)
                 continue;
 
             set<wstring>::size_type comparisons = 0;
             matching.clear();
-            for (set<wstring>::const_iterator term = chr.terms.cbegin(), term_end = chr.terms.cend(); term != term_end; ++term) {
+            for (auto term = chr.terms.cbegin(), term_end = chr.terms.cend(); term != term_end; ++term) {
                 // Test for ignored word(s).
                 if (m_cb->m_ignore.find(*term) != m_cb->m_ignore.cend())
                     continue;
-                for (set<wstring>::const_iterator term2 = chr2.terms.cbegin(), term2_end = chr2.terms.cend(); term2 != term2_end; ++term2) {
+                for (auto term2 = chr2.terms.cbegin(), term2_end = chr2.terms.cend(); term2 != term2_end; ++term2) {
                     // Test for ignored word(s).
                     if (m_cb->m_ignore.find(*term2) != m_cb->m_ignore.cend())
                         continue;
@@ -134,7 +134,7 @@ unsigned int ZRCola::DBSource::character_bank::build_related_worker::process()
 
             if (comparisons) {
                 // If 1/2 terms match, assume related.
-                set<wstring>::size_type hits = matching.size();
+                auto hits = matching.size();
                 if (hits*hits*2 >= comparisons)
                     rel += chr2.chr;
             }
@@ -205,7 +205,7 @@ void ZRCola::DBSource::character_desc_idx::parse_keywords(const wchar_t *str, se
 
 void ZRCola::DBSource::character_desc_idx::add_keywords(const set<wstring> &terms, wchar_t chr, size_t sub)
 {
-    for (set<wstring>::const_iterator term = terms.cbegin(), term_end = terms.cend(); term != term_end; ++term) {
+    for (auto term = terms.cbegin(), term_end = terms.cend(); term != term_end; ++term) {
         if (sub) {
             wstring::size_type j_end = term->size();
             if (j_end >= sub) {
diff --git a/ZRColaCompile/dbsource.h b/ZRColaCompile/dbsource.h
index ccf0da3..dd0e2b7 100644
--- a/ZRColaCompile/dbsource.h
+++ b/ZRColaCompile/dbsource.h
@@ -256,7 +256,7 @@ namespace ZRCola {
                 } else {
                     // Append to existing keyword.
                     std::vector<wchar_t> &val = idx->second;
-                    for (std::vector<wchar_t>::iterator i = val.begin(), i_end = val.end(); ; ++i) {
+                    for (auto i = val.cbegin(), i_end = val.cend(); ; ++i) {
                         if (i == i_end) {
                             // End-of-values reached. Append character.
                             val.push_back(chr);
diff --git a/ZRColaCompile/main.cpp b/ZRColaCompile/main.cpp
index 7b5c692..9c01d2d 100644
--- a/ZRColaCompile/main.cpp
+++ b/ZRColaCompile/main.cpp
@@ -398,7 +398,7 @@ int _tmain(int argc, _TCHAR *argv[])
                     // Read character from the database.
                     unique_ptr<ZRCola::DBSource::character> c(new ZRCola::DBSource::character);
                     if (src.GetCharacter(rs, *c)) {
-                        const ZRCola::DBSource::character &chr = *c.get();
+                        const auto &chr = *c.get();
                         chrs[chr.chr].swap(c);
                     } else
                         has_errors = true;
@@ -415,7 +415,7 @@ int _tmain(int argc, _TCHAR *argv[])
 
                 // Phase 3: Parse characters and build index and data.
                 for (size_t i = 0, i_end = chrs.size(); i < i_end; i++) {
-                    const ZRCola::DBSource::character &chr = *(chrs[i].get());
+                    const auto &chr = *(chrs[i].get());
                     if (&chr == NULL) continue;
 
                     // Add character to index and data.
@@ -542,7 +542,7 @@ int _tmain(int argc, _TCHAR *argv[])
                 << "\"X-Generator: ZRColaCompile\\n\"" << endl;
 
             wstring_convert<codecvt_utf8<wchar_t>> conv;
-            for (set<wstring>::const_iterator i = pot.cbegin(); i != pot.cend(); ++i) {
+            for (auto i = pot.cbegin(); i != pot.cend(); ++i) {
                 // Convert UTF-16 to UTF-8 and escape.
                 string t(conv.to_bytes(*i)), u;
                 for (size_t i = 0, n = t.size(); i < n; i++) {
diff --git a/lib/libZRCola/include/zrcola/character.h b/lib/libZRCola/include/zrcola/character.h
index b9b0d7c..d050c55 100644
--- a/lib/libZRCola/include/zrcola/character.h
+++ b/lib/libZRCola/include/zrcola/character.h
@@ -452,7 +452,7 @@ inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::c
     stream << db.idxDscSub;
 
     // Write data count.
-    std::vector<unsigned __int16>::size_type data_count = db.data.size();
+    auto data_count = db.data.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (data_count > 0xffffffff) {
@@ -491,7 +491,7 @@ inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::c
     stream << db.idxRnk;
 
     // Write data count.
-    std::vector<unsigned __int16>::size_type data_count = db.data.size();
+    auto data_count = db.data.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (data_count > 0xffffffff) {
diff --git a/lib/libZRCola/include/zrcola/common.h b/lib/libZRCola/include/zrcola/common.h
index 8f7ad63..d4b1174 100644
--- a/lib/libZRCola/include/zrcola/common.h
+++ b/lib/libZRCola/include/zrcola/common.h
@@ -557,7 +557,7 @@ template <class T, class T_idx, class T_data>
 inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::index<T, T_idx, T_data> &idx)
 {
     // Write index count.
-    ZRCola::index<T, T_idx, T_data>::size_type idx_count = idx.size();
+    auto idx_count = idx.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (idx_count > 0xffffffff) {
@@ -619,7 +619,7 @@ inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::t
     unsigned __int32 count;
 
     // Write index count.
-    ZRCola::textindex<T_key, T_val, T_idx>::size_type idx_count = idx.size();
+    auto idx_count = idx.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (idx_count > 0xffffffff) {
@@ -636,7 +636,7 @@ inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::t
     stream.write((const char*)idx.data(), sizeof(ZRCola::textindex<T_key, T_val, T_idx>::value_type)*count);
 
     // Write key count.
-    std::vector<T_key>::size_type key_count = idx.keys.size();
+    auto key_count = idx.keys.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (idx_count > 0xffffffff) {
@@ -653,7 +653,7 @@ inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::t
     stream.write((const char*)idx.keys.data(), sizeof(std::vector<T_key>::value_type)*count);
 
     // Write value count.
-    std::vector<T_val>::size_type value_count = idx.values.size();
+    auto value_count = idx.values.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (idx_count > 0xffffffff) {
diff --git a/lib/libZRCola/include/zrcola/language.h b/lib/libZRCola/include/zrcola/language.h
index fa67f5a..22d7c84 100644
--- a/lib/libZRCola/include/zrcola/language.h
+++ b/lib/libZRCola/include/zrcola/language.h
@@ -280,7 +280,7 @@ inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::l
 #endif
 
     // Write data count.
-    std::vector<unsigned __int16>::size_type data_count = db.data.size();
+    auto data_count = db.data.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (data_count > 0xffffffff) {
@@ -351,7 +351,7 @@ inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::l
     stream << db.idxLng;
 
     // Write data count.
-    std::vector<unsigned __int16>::size_type data_count = db.data.size();
+    auto data_count = db.data.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (data_count > 0xffffffff) {
diff --git a/lib/libZRCola/include/zrcola/translate.h b/lib/libZRCola/include/zrcola/translate.h
index 381b82f..5cf5dbc 100644
--- a/lib/libZRCola/include/zrcola/translate.h
+++ b/lib/libZRCola/include/zrcola/translate.h
@@ -267,7 +267,7 @@ inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::t
     stream << db.idxDecomp;
 
     // Write data count.
-    std::vector<unsigned __int16>::size_type data_count = db.data.size();
+    auto data_count = db.data.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (data_count > 0xffffffff) {
diff --git a/lib/libZRCola/src/character.cpp b/lib/libZRCola/src/character.cpp
index a3ca121..a94a7b9 100644
--- a/lib/libZRCola/src/character.cpp
+++ b/lib/libZRCola/src/character.cpp
@@ -77,7 +77,7 @@ bool ZRCola::character_db::Search(_In_z_ const wchar_t *str, _In_ const std::set
                     if (fn_abort && fn_abort(cookie)) return false;
                     wchar_t c = data[i];
                     if (cats.find(GetCharCat(c)) != cats.end()) {
-                        std::map<wchar_t, charrank_t>::iterator idx = hits.find(c);
+                        auto idx = hits.find(c);
                         if (idx == hits.end()) {
                             // New character.
                             hits.insert(std::make_pair(data[i], 1.0/len));
@@ -95,7 +95,7 @@ bool ZRCola::character_db::Search(_In_z_ const wchar_t *str, _In_ const std::set
                     if (fn_abort && fn_abort(cookie)) return false;
                     wchar_t c = data[i];
                     if (cats.find(GetCharCat(c)) != cats.end()) {
-                        std::map<wchar_t, charrank_t>::iterator idx = hits_sub.find(c);
+                        auto idx = hits_sub.find(c);
                         if (idx == hits_sub.end()) {
                             // New character.
                             hits_sub.insert(std::make_pair(data[i], 1.0/len));
diff --git a/lib/libZRCola/src/translate.cpp b/lib/libZRCola/src/translate.cpp
index fe83b44..1c9bb2a 100644
--- a/lib/libZRCola/src/translate.cpp
+++ b/lib/libZRCola/src/translate.cpp
@@ -34,7 +34,7 @@ void ZRCola::translation_db::Compose(_In_z_count_(inputMax) const wchar_t* input
     if (map)
         map->clear();
 
-    indexComp::size_type compositionsCount = idxComp.size();
+    auto compositionsCount = idxComp.size();
 
     for (size_t i = 0; i < inputMax;) {
         // Find the longest matching composition at i-th character.
@@ -116,7 +116,7 @@ void ZRCola::translation_db::Decompose(_In_z_count_(inputMax) const wchar_t* inp
     if (map)
         map->clear();
 
-    indexDecomp::size_type decompositionsCount = idxDecomp.size();
+    auto decompositionsCount = idxDecomp.size();
 
     for (size_t i = 0; i < inputMax;) {
         // Find whether the character can be decomposed.
diff --git a/lib/libZRColaUI/include/zrcolaui/chargroup.h b/lib/libZRColaUI/include/zrcolaui/chargroup.h
index 5976437..b2cc82a 100644
--- a/lib/libZRColaUI/include/zrcolaui/chargroup.h
+++ b/lib/libZRColaUI/include/zrcolaui/chargroup.h
@@ -165,7 +165,7 @@ inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::c
     stream << db.idxRnk;
 
     // Write data count.
-    std::vector<unsigned __int16>::size_type data_count = db.data.size();
+    auto data_count = db.data.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (data_count > 0xffffffff) {
diff --git a/lib/libZRColaUI/include/zrcolaui/keyboard.h b/lib/libZRColaUI/include/zrcolaui/keyboard.h
index fee2114..620bae3 100644
--- a/lib/libZRColaUI/include/zrcolaui/keyboard.h
+++ b/lib/libZRColaUI/include/zrcolaui/keyboard.h
@@ -264,7 +264,7 @@ inline std::ostream& operator <<(_In_ std::ostream& stream, _In_ const ZRCola::k
     stream << db.idxKey;
 
     // Write data count.
-    std::vector<unsigned __int16>::size_type data_count = db.data.size();
+    auto data_count = db.data.size();
 #if defined(_WIN64) || defined(__x86_64__) || defined(__ppc64__)
     // 4G check
     if (data_count > 0xffffffff) {