COMP: Fix new cmGeneratedFileStream for MSVC.

Source/cmGeneratedFileStream.cxx

@@ -31,7 +31,7 @@ cmGeneratedFileStream::cmGeneratedFileStream(const char* name,
                                              bool copy_if_different,
                                              bool quiet):
   cmGeneratedFileStreamBase(name, copy_if_different),
-  std::ofstream(m_TempName.c_str())
+  Stream(m_TempName.c_str())
 {
   // Check if the file opened.
   if(!*this && !quiet)
@@ -49,7 +49,7 @@ cmGeneratedFileStream::~cmGeneratedFileStream()
   // stream will be destroyed which will close the temporary file.
   // Finally the base destructor will be called to replace the
   // destination file.
-  m_Okay = *this;
+  m_Okay = (*this)?true:false;
 }
 
 //----------------------------------------------------------------------------

Source/cmGeneratedFileStream.h

@@ -61,6 +61,8 @@ class cmGeneratedFileStream: private cmGeneratedFileStreamBase,
                              public std::ofstream
 {
 public:
+  typedef std::ofstream Stream;
+
   /**
    * The constructor takes the name of the file to be generated.  It
    * automatically generates a name for the temporary file.  The

Source/cmGlobalVisualStudio7Generator.cxx

@@ -289,15 +289,12 @@ void cmGlobalVisualStudio7Generator::OutputSLNFile(cmLocalGenerator* root,
   fname += "/";
   fname += root->GetMakefile()->GetProjectName();
   fname += ".sln";
-  cmGeneratedFileStream fout(fname.c_str());
+  cmGeneratedFileStream fout(fname.c_str(), true);
   if(!fout)
     {
-    cmSystemTools::Error("Error can not open DSW file for write: ",
-                         fname.c_str());
-    cmSystemTools::ReportLastSystemError("");
     return;
     }
-  this->WriteSLNFile(fout.GetStream(), root, generators);
+  this->WriteSLNFile(fout, root, generators);
 }
 
 // output the SLN file