Export reader and writer symbols to dll

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@695 fdac6126-5c0c-442c-9429-916003d36597

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

@@ -78,7 +78,7 @@ namespace IO {
    Base class for all writer modules. The module should register itself at
    the IOManager by calling the register_module function.
 */
-class BaseWriter
+class OPENMESHDLLEXPORT BaseWriter
 {
 public:
 

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

@@ -77,7 +77,7 @@ namespace IO {
     This class defines the OBJ writer. This class is further singleton'ed
     by SingletonT to OBJWriter.
 */
-class _OBJWriter_ : public BaseWriter
+class OPENMESHDLLEXPORT _OBJWriter_ : public BaseWriter
 {
 public:
 

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

@@ -89,7 +89,7 @@ namespace IO {
     ColorAlpha
 
 */
-class _OFFWriter_ : public BaseWriter
+class OPENMESHDLLEXPORT _OFFWriter_ : public BaseWriter
 {
 public:
 

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

@@ -86,7 +86,7 @@ class BaseExporter;
  *  Implementation of the OM format writer. This class is singleton'ed by 
  *  SingletonT to OMWriter.
  */
-class _OMWriter_ : public BaseWriter
+class OPENMESHDLLEXPORT _OMWriter_ : public BaseWriter
 {
 public:
 

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

@@ -83,7 +83,7 @@ namespace IO {
     - Binary
     - Binary -> MSB
 */
-class _PLYWriter_ : public BaseWriter
+class OPENMESHDLLEXPORT _PLYWriter_ : public BaseWriter
 {
 public:
 

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

@@ -81,7 +81,7 @@ namespace IO {
     Implementation of the STL format writer. This class is singleton'ed by 
     SingletonT to STLWriter.
 */
-class _STLWriter_ : public BaseWriter
+class OPENMESHDLLEXPORT _STLWriter_ : public BaseWriter
 {
 public: