Stop using wxWidgets 1.xx wxString compatibility functions

Replace them with std::string-like equivalents when possible (i.e.
replace Length() with length(), IsNull() with empty()) or, at least,
with wx 2 functions if not (e.g. Remove() with Truncate(), First() with
Find(), LowerCase() with MakeLower() etc).

Closes #22638.

samples/ipc/baseserver.cpp

@@ -255,7 +255,7 @@ MyConnection::OnRequest(const wxString& topic,
         m_sRequestDate = wxDateTime::Now().FormatTime() +
                             " " + wxDateTime::Now().FormatDate();
         data = m_sRequestDate.c_str();
-        *size = m_sRequestDate.Length() + 1;
+        *size = m_sRequestDate.length() + 1;
     }
     else if (item == "bytes[3]")
     {

samples/splash/splash.cpp

@@ -184,7 +184,7 @@ void MyApp::DecorateSplashScreen(wxBitmap& bmp)
     // create a copyright notice that uses the year that this file was compiled
     wxString year(__DATE__);
     wxString copyrightLabel = wxString::Format("%s%s wxWidgets. %s",
-        wxString::FromUTF8("\xc2\xa9"), year.Mid(year.Length() - 4),
+        wxString::FromUTF8("\xc2\xa9"), year.Mid(year.length() - 4),
         "All rights reserved.");
 
     // draw the (white) labels inside of our orange box (at the bottom of the splashscreen)

src/aui/dockart.cpp

@@ -166,7 +166,7 @@ wxString wxAuiChopText(wxDC& dc, const wxString& text, int max_size)
     if (x <= max_size)
         return text;
 
-    size_t i, len = text.Length();
+    size_t i, len = text.length();
     size_t last_good_length = 0;
     for (i = 0; i < len; ++i)
     {

src/common/datetimefmt.cpp

@@ -863,7 +863,7 @@ wxDateTime::ParseRfc822Date(const wxString& originalDate, wxString::const_iterat
     // 1. week day (optional)
     // if there is a week day present, it must be separated
     // by a comma at position [3].
-    if ( date.Length() > 3 && date[3] == ',' )
+    if ( date.length() > 3 && date[3] == ',' )
     {
         const wxDateTime::WeekDay
             wd = GetWeekDayFromName(p, pEnd, Name_Abbr, DateLang_English);

src/common/dcgraph.cpp

@@ -1281,7 +1281,7 @@ bool wxGCDCImpl::DoGetPartialTextExtents(const wxString& text, wxArrayInt& width
 {
     wxCHECK_MSG( m_graphicContext, false, wxT("wxGCDC(cg)::DoGetPartialTextExtents - invalid DC") );
     widths.Clear();
-    widths.Add(0,text.Length());
+    widths.Add(0,text.length());
     if ( text.IsEmpty() )
         return true;
 

src/common/filesys.cpp

@@ -367,7 +367,7 @@ static wxString MakeCorrectPath(const wxString& path)
             if (j >= 0 && r.GetChar(j) != wxT(':'))
             {
                 for (j = j - 1; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
-                r.Remove(j + 1);
+                r.Truncate(j + 1);
             }
         }
     }
@@ -417,7 +417,7 @@ void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir)
             {
                 if (m_Path[(unsigned int) i] == wxT(':'))
                 {
-                    m_Path.Remove(i+1);
+                    m_Path.Truncate(i+1);
                     break;
                 }
             }
@@ -426,7 +426,7 @@ void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir)
         }
         else
         {
-            m_Path.Remove(pathpos+1);
+            m_Path.Truncate(pathpos+1);
         }
     }
 }

src/common/utilscmn.cpp

@@ -126,7 +126,7 @@ static const char hexArray[] = "0123456789ABCDEF";
 // Convert 2-digit hex number to decimal
 int wxHexToDec(const wxString& str)
 {
-    wxCHECK_MSG( str.Length() >= 2, -1, wxS("Invalid argument") );
+    wxCHECK_MSG( str.length() >= 2, -1, wxS("Invalid argument") );
 
     char buf[2];
     buf[0] = str.GetChar(0);

src/generic/filectrlg.cpp

@@ -747,7 +747,7 @@ void wxFileListCtrl::OnListEndLabelEdit( wxListEvent &event )
     if ((event.GetLabel().empty()) ||
         (event.GetLabel() == wxT(".")) ||
         (event.GetLabel() == wxT("..")) ||
-        (event.GetLabel().First( wxFILE_SEP_PATH ) != wxNOT_FOUND))
+        (event.GetLabel().Find( wxFILE_SEP_PATH ) != wxNOT_FOUND))
     {
         wxMessageDialog dialog(this, _("Illegal directory name."), _("Error"), wxOK | wxICON_ERROR );
         dialog.ShowModal();

src/generic/graphicc.cpp

@@ -2985,7 +2985,7 @@ void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble&
     while (i++ < len)
         widths.Add(PANGO_PIXELS(w));
 #else
-    for (size_t i = 0; i < text.Length(); i++)
+    for (size_t i = 0; i < text.length(); i++)
     {
         const wxCharBuffer data = text.SubString(0, i).utf8_str();
 

src/generic/helpext.cpp

@@ -399,7 +399,7 @@ bool wxExtHelpController::KeywordSearch(const wxString& k,
         if (! showAll)
         {
             compA = k;
-            compA.LowerCase();
+            compA.MakeLower();
         }
 
         while (node)
@@ -410,7 +410,7 @@ bool wxExtHelpController::KeywordSearch(const wxString& k,
             bool testTarget = ! compB.empty();
             if (testTarget && ! showAll)
             {
-                compB.LowerCase();
+                compB.MakeLower();
                 testTarget = compB.Contains(compA);
             }
 

src/html/helpdata.cpp

@@ -891,7 +891,7 @@ void wxHtmlSearchEngine::LookFor(const wxString& keyword, bool case_sensitive, b
     m_Keyword = keyword;
 
     if (!m_CaseSensitive)
-        m_Keyword.LowerCase();
+        m_Keyword.MakeLower();
 }
 
 
@@ -937,7 +937,7 @@ bool wxHtmlSearchEngine::Scan(const wxFSFile& file)
     wxString bufStr = filter.ReadFile(file);
 
     if (!m_CaseSensitive)
-        bufStr.LowerCase();
+        bufStr.MakeLower();
 
     {   // remove html tags
         wxString bufStrCopy;

src/html/htmlcell.cpp

@@ -479,7 +479,7 @@ void wxHtmlWordCell::Draw(wxDC& dc, int x, int y,
         }
 
         int part1 = s->GetFromCell()==this ? s->GetFromCharacterPos() : 0;
-        int part2 = s->GetToCell()==this   ? s->GetToCharacterPos()   : m_Word.Length();
+        int part2 = s->GetToCell()==this   ? s->GetToCharacterPos()   : m_Word.length();
 
         if ( part1 > 0 )
         {
@@ -581,7 +581,7 @@ wxString wxHtmlWordCell::ConvertToText(wxHtmlSelection *s) const
         if ( s->AreFromToCharacterPosSet() )
         {
             const int part1 = s->GetFromCell()==this ? s->GetFromCharacterPos() : 0;
-            const int part2 = s->GetToCell()==this   ? s->GetToCharacterPos()   : m_Word.Length();
+            const int part2 = s->GetToCell()==this   ? s->GetToCharacterPos()   : m_Word.length();
             if ( part1 == part2 )
                 return wxEmptyString;
             return GetPartAsText(part1, part2);

src/html/styleparams.cpp

@@ -63,7 +63,7 @@ wxHtmlStyleParams::wxHtmlStyleParams(const wxHtmlTag& tag)
             m_names.Add(tempString);
 
             // Extract and trim values
-            tempString = token.SubString(colonIndex + 1, token.Length() - 1);
+            tempString = token.SubString(colonIndex + 1, token.length() - 1);
             tempString.Trim(true).Trim(false);
             // Add to values list
             m_values.Add(tempString);

src/msw/graphicsd2d.cpp

@@ -3239,11 +3239,11 @@ wxD2DFontData::wxD2DFontData(wxGraphicsRenderer* renderer, const wxFont& font, c
         // The length of the font name must not exceed LF_FACESIZE TCHARs,
         // including the terminating NULL.
         wxString name = font.GetFaceName().Mid(0, WXSIZEOF(logfont.lfFaceName)-1);
-        for (unsigned int i = 0; i < name.Length(); ++i)
+        for (unsigned int i = 0; i < name.length(); ++i)
         {
             logfont.lfFaceName[i] = name.GetChar(i);
         }
-        logfont.lfFaceName[name.Length()] = L'\0';
+        logfont.lfFaceName[name.length()] = L'\0';
     }
 
     wxCOMPtr<IDWriteFontFamily> fontFamily;
@@ -3860,7 +3860,7 @@ public:
 
     static void GetPartialTextExtents(wxD2DFontData* fontData, const wxString& text, wxArrayDouble& widths)
     {
-        for (unsigned int i = 0; i < text.Length(); ++i)
+        for (unsigned int i = 0; i < text.length(); ++i)
         {
             wxDouble width;
             GetTextExtent(fontData, text.SubString(0, i), &width, NULL, NULL, NULL);

src/msw/nativdlg.cpp

@@ -161,7 +161,7 @@ wxWindow* wxWindow::CreateWindowFromHWND(wxWindow* parent, WXHWND hWnd)
     wxCHECK_MSG( parent, NULL, wxT("must have valid parent for a control") );
 
     wxString str(wxGetWindowClass(hWnd));
-    str.UpperCase();
+    str.MakeUpper();
 
     long id = wxGetWindowId(hWnd);
     long style = GetWindowLong((HWND) hWnd, GWL_STYLE);

src/msw/statbox.cpp

@@ -408,7 +408,7 @@ WXHRGN wxStaticBox::MSWGetRegionWithoutChildren()
 
         wxMSWWinStyleUpdater updateStyle(child);
         wxString str(wxGetWindowClass(child));
-        str.UpperCase();
+        str.MakeUpper();
         if ( str == wxT("BUTTON") && updateStyle.IsOn(BS_GROUPBOX) )
         {
             if ( child == GetHwnd() )

src/propgrid/props.cpp

@@ -92,7 +92,7 @@ wxString wxStringProperty::ValueToString( wxVariant& value,
     // If string is password and value is for visual purposes,
     // then return asterisks instead the actual string.
     if ( (m_flags & wxPG_PROP_PASSWORD) && !(argFlags & (wxPG_FULL_VALUE|wxPG_EDITABLE_VALUE)) )
-        return wxString(wxS('*'), s.Length());
+        return wxString(wxS('*'), s.length());
 
     return s;
 }

src/qt/listctrl.cpp

@@ -428,7 +428,7 @@ public:
 
         QVector<int> roles;
 
-        if ( (info.m_mask & wxLIST_MASK_TEXT) && !info.GetText().IsNull() )
+        if ( (info.m_mask & wxLIST_MASK_TEXT) && !info.GetText().empty() )
         {
             columnItem.m_label =  wxQtConvertString(info.GetText());
             roles.push_back(Qt::DisplayRole);

src/richtext/richtextbuffer.cpp

@@ -4750,7 +4750,7 @@ bool wxRichTextParagraphLayoutBox::FindNextParagraphNumber(wxRichTextParagraph*
                     int pos = text.Find(wxT('.'), true);
                     if (pos != wxNOT_FOUND)
                     {
-                        text = text.Mid(0, text.Length() - pos - 1);
+                        text = text.Mid(0, text.length() - pos - 1);
                     }
                     else
                         text.clear();
@@ -6831,7 +6831,7 @@ bool wxRichTextPlainText::Draw(wxDC& dc, wxRichTextDrawingContext& context, cons
         const wxString* pWholeString = &m_text;
         if (context.HasVirtualText(this))
         {
-            if (context.GetVirtualText(this, stringWhole) && stringWhole.Length() == m_text.Length())
+            if (context.GetVirtualText(this, stringWhole) && stringWhole.length() == m_text.length())
                 pWholeString = &stringWhole;
         }
 
@@ -6852,7 +6852,7 @@ bool wxRichTextPlainText::Draw(wxDC& dc, wxRichTextDrawingContext& context, cons
         stringWhole = m_text;
         if (context.HasVirtualText(this))
         {
-            if (!context.GetVirtualText(this, stringWhole) || stringWhole.Length() != m_text.Length())
+            if (!context.GetVirtualText(this, stringWhole) || stringWhole.length() != m_text.length())
                 stringWhole = m_text;
         }
 
@@ -7264,7 +7264,7 @@ bool wxRichTextPlainText::GetRangeSize(const wxRichTextRange& range, wxSize& siz
         const wxString* pWholeString = &m_text;
         if (context.HasVirtualText(this))
         {
-            if (context.GetVirtualText(this, stringWhole) && stringWhole.Length() == m_text.Length())
+            if (context.GetVirtualText(this, stringWhole) && stringWhole.length() == m_text.length())
                 pWholeString = &stringWhole;
         }
 
@@ -7535,7 +7535,7 @@ bool wxRichTextPlainText::CanSplit(wxRichTextDrawingContext& context) const
     // If this object has any virtual attributes at all, whether for the whole object
     // or individual ones, we should try splitting it by calling Split.
     // Must be more than one character in order to be able to split.
-    return m_text.Length() > 1 && context.HasVirtualAttributes(const_cast<wxRichTextPlainText*>(this));
+    return m_text.length() > 1 && context.HasVirtualAttributes(const_cast<wxRichTextPlainText*>(this));
 }
 
 wxRichTextObject* wxRichTextPlainText::Split(wxRichTextDrawingContext& context)
@@ -7558,7 +7558,7 @@ wxRichTextObject* wxRichTextPlainText::Split(wxRichTextDrawingContext& context)
 
                 // We will gather up runs of text with the same virtual attributes
 
-                int len = m_text.Length();
+                int len = m_text.length();
                 int i = 0;
 
                 // runStart and runEnd represent the accumulated run with a consistent attribute
@@ -8955,9 +8955,9 @@ bool wxRichTextBuffer::PasteFromClipboard(long position)
                 wxString text(data.GetText());
 #ifdef __WXMSW__
                 wxString text2;
-                text2.Alloc(text.Length()+1);
+                text2.Alloc(text.length()+1);
                 size_t i;
-                for (i = 0; i < text.Length(); i++)
+                for (i = 0; i < text.length(); i++)
                 {
                     wxChar ch = text[i];
                     if (ch != wxT('\r'))
@@ -8969,7 +8969,7 @@ bool wxRichTextBuffer::PasteFromClipboard(long position)
                 container->InsertTextWithUndo(this, position+1, text2, GetRichTextCtrl(), wxRICHTEXT_INSERT_WITH_PREVIOUS_PARAGRAPH_STYLE);
 
                 if (GetRichTextCtrl())
-                    GetRichTextCtrl()->ShowPosition(position + text2.Length());
+                    GetRichTextCtrl()->ShowPosition(position + text2.length());
 
                 success = true;
             }

src/richtext/richtextfontpage.cpp

@@ -934,7 +934,7 @@ void wxRichTextFontPage::OnFaceTextCtrlUpdated( wxCommandEvent& WXUNUSED(event)
             size_t i;
             for (i = 0; i < arr.GetCount(); i++)
             {
-                if (arr[i].Mid(0, facename.Length()).Lower() == facename.Lower())
+                if (arr[i].Mid(0, facename.length()).Lower() == facename.Lower())
                 {
                     m_faceListBox->ScrollToRow(i);
                     break;

src/richtext/richtextxml.cpp

@@ -510,7 +510,7 @@ bool wxRichTextPlainText::ExportXML(wxOutputStream& stream, int indent, wxRichTe
     int i;
     int last = 0;
     const wxString& text = GetText();
-    int len = (int) text.Length();
+    int len = (int) text.length();
 
     if (len == 0)
     {
@@ -624,7 +624,7 @@ bool wxRichTextPlainText::ExportXML(wxXmlNode* parent, wxRichTextXMLHandler* han
     int i;
     int last = 0;
     const wxString& text = GetText();
-    int len = (int) text.Length();
+    int len = (int) text.length();
 
     if (len == 0)
     {

src/stc/PlatWX.cpp

@@ -767,7 +767,7 @@ SurfaceFontDataD2D::SurfaceFontDataD2D(const FontParameters& fp)
             m_pTextFormat->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
 
             hr = pDWriteFactory->CreateTextLayout(extentTest.wc_str(),
-                extentTest.Length(), m_pTextFormat, FLT_MAX, FLT_MAX,
+                extentTest.length(), m_pTextFormat, FLT_MAX, FLT_MAX,
                 &pTextLayout);
         }
 
@@ -791,7 +791,7 @@ SurfaceFontDataD2D::SurfaceFontDataD2D(const FontParameters& fp)
             m_ascent = lineMetrics[0].baseline;
             m_descent = lineMetrics[0].height - lineMetrics[0].baseline;
             m_internalLeading = lineMetrics[0].height - emHeight;
-            m_averageCharWidth = textmetrics.width/extentTest.Length();
+            m_averageCharWidth = textmetrics.width/extentTest.length();
 
             switch ( fp.extraFontFlag & wxSTC_EFF_QUALITY_MASK )
             {
@@ -1525,7 +1525,7 @@ XYPOSITION SurfaceD2D::WidthText(Font &font_, const char *s, int len)
         DWRITE_TEXT_METRICS textMetrics = {0,0,0,0,0,0,0,0,0};
 
         HRESULT hr = m_pDWriteFactory->CreateTextLayout(tbuf.wc_str(),
-            tbuf.Length(), m_pTextFormat, FLT_MAX, FLT_MAX, &pTextLayout);
+            tbuf.length(), m_pTextFormat, FLT_MAX, FLT_MAX, &pTextLayout);
 
         if ( SUCCEEDED(hr) )
         {
@@ -1546,10 +1546,10 @@ void SurfaceD2D::MeasureWidths(Font &font_, const char *s, int len,
     int fit = 0;
     wxString tbuf = stc2wx(s,len);
     wxVector<FLOAT> poses;
-    poses.reserve(tbuf.Length());
+    poses.reserve(tbuf.length());
-    poses.resize(tbuf.Length());
+    poses.resize(tbuf.length());
 
-    fit = tbuf.Length();
+    fit = tbuf.length();
     const int clusters = 1000;
     DWRITE_CLUSTER_METRICS clusterMetrics[clusters];
     UINT32 count = 0;
@@ -1560,7 +1560,7 @@ void SurfaceD2D::MeasureWidths(Font &font_, const char *s, int len,
         wxCOMPtr<IDWriteTextLayout> pTextLayout;
 
         HRESULT hr = m_pDWriteFactory->CreateTextLayout(tbuf.wc_str(),
-            tbuf.Length(), m_pTextFormat, FLT_MAX, FLT_MAX, &pTextLayout);
+            tbuf.length(), m_pTextFormat, FLT_MAX, FLT_MAX, &pTextLayout);
         if ( !SUCCEEDED(hr) )
             return;
 
@@ -1583,7 +1583,7 @@ void SurfaceD2D::MeasureWidths(Font &font_, const char *s, int len,
             }
             position += clusterMetrics[ci].width;
         }
-        PLATFORM_ASSERT(ti == tbuf.Length());
+        PLATFORM_ASSERT(ti == tbuf.length());
     }
     if (m_unicodeMode)
     {
@@ -1628,7 +1628,7 @@ void SurfaceD2D::MeasureWidths(Font &font_, const char *s, int len,
     {
         const size_t buflen = static_cast<size_t>(len);
         // One character per position
-        PLATFORM_ASSERT(buflen == tbuf.Length());
+        PLATFORM_ASSERT(buflen == tbuf.length());
         for ( size_t kk=0; kk<buflen; kk++ )
         {
             positions[kk] = poses[kk];
@@ -1808,7 +1808,7 @@ void SurfaceD2D::DrawTextCommon(PRectangle rc, Font &font_, XYPOSITION ybase,
                 D2D1_ANTIALIAS_MODE_ALIASED);
         }
 
-        hr = m_pDWriteFactory->CreateTextLayout(tbuf.wc_str(), tbuf.Length(),
+        hr = m_pDWriteFactory->CreateTextLayout(tbuf.wc_str(), tbuf.length(),
             m_pTextFormat, rc.Width(), rc.Height(), &pTextLayout);
 
         if ( SUCCEEDED(hr) )

src/univ/textctrl.cpp

@@ -2540,7 +2540,7 @@ void wxTextCtrl::SetMaxLength(unsigned long len)
 {
     // if the existing value in the text control is too long,
     // then it is clipped to the newly imposed limit.
-    if ( m_value.Length() > len )
+    if ( m_value.length() > len )
     {
         // block the wxEVT_TEXT event temporaryly
         // otherwise Remove will generate a wxEVT_TEXT event

src/xml/xml.cpp

@@ -1097,7 +1097,7 @@ bool OutputNode(wxOutputStream& stream,
         case wxXML_TEXT_NODE:
             if (node->GetNoConversion())
             {
-                stream.Write(node->GetContent().c_str(), node->GetContent().Length());
+                stream.Write(node->GetContent().c_str(), node->GetContent().length());
                 rc = true;
             }
             else

tests/controls/textctrltest.cpp

@@ -812,7 +812,7 @@ void TextCtrlTestCase::DoPositionToXYMultiLine(long style)
     // empty field
     m_text->Clear();
     const long numChars_0 = 0;
-    wxASSERT(numChars_0 == text.Length());
+    wxASSERT(numChars_0 == text.length());
     XYPos coords_0[numChars_0+1] =
         { { 0, 0 } };
 
@@ -832,7 +832,7 @@ void TextCtrlTestCase::DoPositionToXYMultiLine(long style)
     text = wxS("1234");
     m_text->SetValue(text);
     const long numChars_1 = 4;
-    wxASSERT( numChars_1 == text.Length() );
+    wxASSERT( numChars_1 == text.length() );
     XYPos coords_1[numChars_1+1] =
         { { 0, 0 }, { 1, 0 }, { 2, 0}, { 3, 0 }, { 4, 0 } };
 
@@ -864,7 +864,7 @@ void TextCtrlTestCase::DoPositionToXYMultiLine(long style)
 #endif // WXMSW
 
     const long numChars_2 = 8;
-    wxASSERT(numChars_2 == text.Length());
+    wxASSERT(numChars_2 == text.length());
     XYPos coords_2[numChars_2 + 1] =
         { { 0, 0 }, { 1, 0 }, { 2, 0 }, { 3, 0 },
           { 0, 1 }, { 1, 1 }, { 2, 1 },
@@ -913,7 +913,7 @@ void TextCtrlTestCase::DoPositionToXYMultiLine(long style)
 #endif // WXMSW
 
     const long numChars_3 = 3;
-    wxASSERT(numChars_3 == text.Length());
+    wxASSERT(numChars_3 == text.length());
     XYPos coords_3[numChars_3+1] =
         { { 0, 0 },
           { 0, 1 },
@@ -965,7 +965,7 @@ void TextCtrlTestCase::DoPositionToXYMultiLine(long style)
 #endif // WXMSW
 
     const long numChars_4 = 10;
-    wxASSERT(numChars_4 == text.Length());
+    wxASSERT(numChars_4 == text.length());
     XYPos coords_4[numChars_4+1] =
         { { 0, 0 }, { 1, 0 }, { 2, 0 }, { 3, 0 },
           { 0, 1 }, { 1, 1 },
@@ -1200,7 +1200,7 @@ void TextCtrlTestCase::PositionToXYSingleLine()
     // pure one line
     text = wxS("1234");
     m_text->SetValue(text);
-    const long numChars_1 = text.Length();
+    const long numChars_1 = text.length();
     CPPUNIT_ASSERT_EQUAL( numChars_1, m_text->GetLastPosition() );
     for ( long i = 0; i <= numChars_1; i++ )
     {
@@ -1216,7 +1216,7 @@ void TextCtrlTestCase::PositionToXYSingleLine()
     // with new line characters
     text = wxS("123\nab\nX");
     m_text->SetValue(text);
-    const long numChars_2 = text.Length();
+    const long numChars_2 = text.length();
     CPPUNIT_ASSERT_EQUAL( numChars_2, m_text->GetLastPosition() );
     for ( long i = 0; i <= numChars_2; i++ )
     {

utils/wxrc/wxrc.cpp

@@ -622,7 +622,7 @@ static wxString FileToCppArray(wxString filename, int num)
             output << wxT("\n");
         }
         output << tmp;
-        linelng += tmp.Length()+1;
+        linelng += tmp.length()+1;
     }
 
     delete[] buffer;
@@ -780,7 +780,7 @@ static wxString FileToPythonArray(wxString filename, int num)
             output << wxT("\\\n");
         }
         output << tmp;
-        linelng += tmp.Length();
+        linelng += tmp.length();
     }
 
     delete[] buffer;