Undid completely wrong patch 1438117: other platforms do _not_ count

the visible lines, only the underlying lines. With the patch, you
can't reliably do anything with lines using the other functions.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42968 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/textctrl.cpp

@@ -1153,31 +1153,7 @@ int wxTextCtrl::GetNumberOfLines() const
 {
     if ( IsMultiLine() )
     {
-        GtkTextIter iter;
+        return gtk_text_buffer_get_line_count( m_buffer );
-        gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, 0 );
-
-        // move forward by one display line until the end is reached
-        int lineCount = 1;
-        while ( gtk_text_view_forward_display_line(GTK_TEXT_VIEW(m_text), &iter) )
-        {
-            lineCount++;
-        }
-
-        // If the last character in the text buffer is a newline,
-        // gtk_text_view_forward_display_line() will return false without that
-        // line being counted. Must add one manually in that case.
-        GtkTextIter lastCharIter;
-        gtk_text_buffer_get_iter_at_offset
-        (
-            m_buffer,
-            &lastCharIter,
-            gtk_text_buffer_get_char_count(m_buffer) - 1
-        );
-        gchar lastChar = gtk_text_iter_get_char( &lastCharIter );
-        if ( lastChar == wxT('\n') )
-            lineCount++;
-
-        return lineCount;
     }
     else // single line
     {