Const casting fix for Vis C.

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

diff --git a/src/msw/regconf.cpp b/src/msw/regconf.cpp
index 5d18e7f81a97959947bf22760b30e40d0f7e3eb2..9c77482ec94a9d8bfab359f9856683947f9acc55 100644 (file)
--- a/src/msw/regconf.cpp
+++ b/src/msw/regconf.cpp
@@ -27,6 +27,9 @@
 #include "wx/event.h"
 #include "wx/app.h"
 #include "wx/log.h"
+
+#if wxUSE_CONFIG
+
 #include "wx/config.h"
 
 #ifndef __WIN16__
@@ -98,7 +101,7 @@ 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
@@ -131,6 +134,7 @@ wxRegConfig::wxRegConfig(const wxString& appName, const wxString& vendorName,
   {
     wxLogNull nolog;
     m_keyGlobalRoot.Open();
+    m_keyGlobal.Open();
   }
 }
 
@@ -160,13 +164,25 @@ 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);
@@ -202,13 +218,15 @@ bool wxRegConfig::GetNextGroup(wxString& str, long& lIndex) const
   // are we already enumerating local entries?
   if ( m_keyGlobal.IsOpened() && !IS_LOCAL_INDEX(lIndex) ) {
     // try to find a global entry which doesn't appear locally
-    do {
-      if ( !m_keyGlobal.GetNextKey(str, lIndex) ) {
-        // no more global entries
-        lIndex |= LOCAL_MASK;
-        break;
+    while ( m_keyGlobal.GetNextKey(str, lIndex) ) {
+      if ( !m_keyLocal.HasSubKey(str) ) {
+        // ok, found one - return it
+        return TRUE;
       }
-    } while( m_keyLocal.HasSubKey(str) );
+    }
+
+    // no more global entries
+    lIndex |= LOCAL_MASK;
   }
 
   // much easier with local entries: get the next one we find
@@ -231,13 +249,15 @@ bool wxRegConfig::GetNextEntry(wxString& str, long& lIndex) const
   // are we already enumerating local entries?
   if ( m_keyGlobal.IsOpened() && !IS_LOCAL_INDEX(lIndex) ) {
     // try to find a global entry which doesn't appear locally
-    do {
-      if ( !m_keyGlobal.GetNextValue(str, lIndex) ) {
-        // no more global entries
-        lIndex |= LOCAL_MASK;
-        break;
+    while ( m_keyGlobal.GetNextValue(str, lIndex) ) {
+      if ( !m_keyLocal.HasValue(str) ) {
+        // ok, found one - return it
+        return TRUE;
       }
-    } while( m_keyLocal.HasValue(str) );
+    }
+
+    // no more global entries
+    lIndex |= LOCAL_MASK;
   }
 
   // much easier with local entries: get the next one we find
@@ -337,7 +357,7 @@ 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 +393,7 @@ 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 +436,7 @@ 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 +461,7 @@ 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 +473,7 @@ 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 +536,7 @@ 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;
 }
@@ -565,3 +585,5 @@ bool wxRegConfig::DeleteAll()
 #endif
   // __WIN16__
 
+#endif
+  // wxUSE_CONFIG