/////////////////////////////////////////////////////////////////////////////
-// Name:        fstream.cpp
+// Name:        src/common/fstream.cpp
 // Purpose:     "File stream" classes
 // Author:      Julian Smart
 // Modified by:
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-  #pragma hdrstop
+    #pragma hdrstop
 #endif
 
 #if wxUSE_STREAMS
 
-#include <stdio.h>
-#include "wx/stream.h"
 #include "wx/wfstream.h"
 
+#ifndef WX_PRECOMP
+    #include "wx/stream.h"
+#endif
+
+#include <stdio.h>
+
 #if wxUSE_FILE
 
 // ----------------------------------------------------------------------------
     return m_file->Tell();
 }
 
+bool wxFileInputStream::IsOk() const 
+{ 
+    return (wxStreamBase::IsOk() && m_file->IsOpened()); 
+}
+
 // ----------------------------------------------------------------------------
 // wxFileOutputStream
 // ----------------------------------------------------------------------------
     return m_file->Length();
 }
 
+bool wxFileOutputStream::IsOk() const 
+{ 
+    return (wxStreamBase::IsOk() && m_file->IsOpened()); 
+}
+
 // ----------------------------------------------------------------------------
 // wxTempFileOutputStream
 // ----------------------------------------------------------------------------
     return m_file->Tell();
 }
 
+bool wxFFileInputStream::IsOk() const 
+{ 
+    return (wxStreamBase::IsOk() && m_file->IsOpened()); 
+}
+
 // ----------------------------------------------------------------------------
 // wxFFileOutputStream
 // ----------------------------------------------------------------------------
     return m_file->Length();
 }
 
+bool wxFFileOutputStream::IsOk() const 
+{ 
+    return (wxStreamBase::IsOk() && m_file->IsOpened()); 
+}
+
 // ----------------------------------------------------------------------------
 // wxFFileStream
 // ----------------------------------------------------------------------------
 #endif //wxUSE_FFILE
 
 #endif // wxUSE_STREAMS
-