Use wxString's empty() when checking if the string is (non-)empty throughout wx.

Instead of constructs such as if "( s.length() )" and "if (s.length() > 0)" use "if ( !s.empty() )" instead. Similarly for "if (s.length() == 0)" or "if ( s.IsNull() )", use "if ( s.empty() )".
No code changes intended except for a few instances where a construct like "if ( s.length() && wxFileExists(s) )" was changed to not check the length of the string and let wxFileExists handle such cases.



git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66728 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/fontdlgg.cpp

@@ -506,10 +506,10 @@ void wxGenericFontDialog::CreateWidgets()
     if (m_colourChoice)
     {
         wxString name(wxTheColourDatabase->FindName(m_fontData.GetColour()));
-        if (name.length())
-            m_colourChoice->SetStringSelection(name);
-        else
+        if ( name.empty() )
             m_colourChoice->SetStringSelection(wxT("BLACK"));
+        else
+            m_colourChoice->SetStringSelection(name);
     }
 
     if (m_underLineCheckBox)