- add dll export macros

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@699 fdac6126-5c0c-442c-9429-916003d36597

src/OpenMesh/Core/IO/writer/OBJWriter.hh

@@ -118,7 +118,7 @@ private:
 
 /// Declare the single entity of the OBJ writer
 extern _OBJWriter_  __OBJWriterinstance;
-_OBJWriter_& OBJWriter();
+OPENMESHDLLEXPORT _OBJWriter_& OBJWriter();
 
 
 //=============================================================================

src/OpenMesh/Core/IO/writer/OFFWriter.hh

@@ -122,7 +122,7 @@ protected:
 
 /// Declare the single entity of the OFF writer.
 extern _OFFWriter_  __OFFWriterInstance;
-_OFFWriter_& OFFWriter();
+OPENMESHDLLEXPORT _OFFWriter_& OFFWriter();
 
 
 //=============================================================================

src/OpenMesh/Core/IO/writer/OMWriter.hh

@@ -129,7 +129,7 @@ protected:
 
 /// Declare the single entity of the OM writer.
 extern _OMWriter_  __OMWriterInstance;
-_OMWriter_& OMWriter();
+OPENMESHDLLEXPORT _OMWriter_& OMWriter();
 
 
 //=============================================================================

src/OpenMesh/Core/IO/writer/PLYWriter.hh

@@ -126,7 +126,7 @@ protected:
 
 /// Declare the single entity of the PLY writer.
 extern _PLYWriter_  __PLYWriterInstance;
-_PLYWriter_& PLYWriter();
+OPENMESHDLLEXPORT _PLYWriter_& PLYWriter();
 
 
 //=============================================================================

src/OpenMesh/Core/IO/writer/STLWriter.hh

@@ -110,7 +110,7 @@ private:
 
 // Declare the single entity of STL writer.
 extern _STLWriter_  __STLWriterInstance;
-_STLWriter_& STLWriter();
+OPENMESHDLLEXPORT _STLWriter_& STLWriter();
 
 
 //=============================================================================