Misc fixes

[wxWidgets.git] / src / msw / regconf.cpp

diff --git a/src/msw/regconf.cpp b/src/msw/regconf.cpp
index 6ec17a61ffbda5d682315be9c98b2d9b649ea6fe..e62511ca68015e8ed19a3e509b696af4a3a0290a 100644 (file)
--- a/src/msw/regconf.cpp
+++ b/src/msw/regconf.cpp
@@ -98,7 +98,7 @@ wxRegConfig::wxRegConfig(const wxString& appName, const wxString& vendorName,
 
     if ( appName.IsEmpty() )
     {
-      wxCHECK_RET( wxTheApp, _T("No application name in wxRegConfig ctor!") );
+      wxCHECK_RET( wxTheApp, wxT("No application name in wxRegConfig ctor!") );
       strRoot << wxTheApp->GetAppName();
     }
     else
@@ -160,13 +160,25 @@ void wxRegConfig::SetPath(const wxString& strPath)
   }
 
   // recombine path parts in one variable
-  wxString strRegPath;
+  wxString strOldPath = m_strPath, strRegPath;
   m_strPath.Empty();
   for ( size_t n = 0; n < aParts.Count(); n++ ) {
     strRegPath << '\\' << aParts[n];
     m_strPath << wxCONFIG_PATH_SEPARATOR << aParts[n];
   }
 
+  if ( m_strPath == strOldPath )
+      return;
+
+  // as we create the registry key when SetPath(key) is done, we can be left
+  // with plenty of empty keys if this was only done to try to read some value
+  // which, in fact, doesn't exist - to prevent this from happening we
+  // automatically delete the old key if it was empty
+  if ( m_keyLocal.IsEmpty() )
+  {
+      m_keyLocal.DeleteSelf();
+  }
+
   // change current key(s)
   m_keyLocal.SetName(m_keyLocalRoot, strRegPath);
   m_keyGlobal.SetName(m_keyGlobalRoot, strRegPath);
@@ -337,7 +349,7 @@ bool wxRegConfig::Read(const wxString& key, wxString *pStr) const
   if ( IsImmutable(path.Name()) ) {
     if ( TryGetValue(m_keyGlobal, path.Name(), *pStr) ) {
       if ( m_keyLocal.HasValue(path.Name()) ) {
-        wxLogWarning(_T("User value for immutable key '%s' ignored."),
+        wxLogWarning(wxT("User value for immutable key '%s' ignored."),
                    path.Name().c_str());
       }
      *pStr = wxConfigBase::ExpandEnvVars(*pStr);
@@ -373,7 +385,7 @@ bool wxRegConfig::Read(const wxString& key, wxString *pStr,
   if ( IsImmutable(path.Name()) ) {
     if ( TryGetValue(m_keyGlobal, path.Name(), *pStr) ) {
       if ( m_keyLocal.HasValue(path.Name()) ) {
-        wxLogWarning(_T("User value for immutable key '%s' ignored."),
+        wxLogWarning(wxT("User value for immutable key '%s' ignored."),
                    path.Name().c_str());
       }
 
@@ -416,7 +428,7 @@ bool wxRegConfig::Read(const wxString& key, long *plResult) const
   if ( IsImmutable(path.Name()) ) {
     if ( TryGetValue(m_keyGlobal, path.Name(), plResult) ) {
       if ( m_keyLocal.HasValue(path.Name()) ) {
-        wxLogWarning(_T("User value for immutable key '%s' ignored."),
+        wxLogWarning(wxT("User value for immutable key '%s' ignored."),
                      path.Name().c_str());
       }
 
@@ -441,7 +453,7 @@ bool wxRegConfig::Write(const wxString& key, const wxString& szValue)
   wxConfigPathChanger path(this, key);
 
   if ( IsImmutable(path.Name()) ) {
-    wxLogError(_T("Can't change immutable entry '%s'."), path.Name().c_str());
+    wxLogError(wxT("Can't change immutable entry '%s'."), path.Name().c_str());
     return FALSE;
   }
 
@@ -453,7 +465,7 @@ bool wxRegConfig::Write(const wxString& key, long lValue)
   wxConfigPathChanger path(this, key);
 
   if ( IsImmutable(path.Name()) ) {
-    wxLogError(_T("Can't change immutable entry '%s'."), path.Name().c_str());
+    wxLogError(wxT("Can't change immutable entry '%s'."), path.Name().c_str());
     return FALSE;
   }
 
@@ -516,7 +528,7 @@ bool wxRegConfig::RenameGroup(const wxString& oldName, const wxString& newName)
 
     // TODO there is no way to rename a registry key - we must do a deep copy
     //      ourselves
-    wxFAIL_MSG(_T("Registry key renaming not implemented"));
+    wxFAIL_MSG(wxT("Registry key renaming not implemented"));
 
     return FALSE;
 }