diff --git a/rply.h b/rply.h
index 9fa6da9..2e2a0c5 100644
--- a/rply.h
+++ b/rply.h
@@ -1,5 +1,5 @@
-#ifndef RPLY_H
-#define RPLY_H
+#pragma once
+
 /* ----------------------------------------------------------------------
  * RPly library, read/write PLY files
  * Diego Nehab, IMPA
@@ -9,6 +9,19 @@
  * at the end of this file.
  * ---------------------------------------------------------------------- */
 
+#ifdef RPLY_SHARED_LIB
+
+#ifdef RPLY_BUILD_LIB
+#define RPLY_DLL_DEF __declspec(dllexport)
+#else
+#define RPLY_DLL_DEF __declspec(dllimport)
+#endif // RPLY_BUILD_LIB
+
+#else
+#define RPLY_DLL_DEF
+#endif // RPLY_SHARED_LIB
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -57,6 +70,8 @@ typedef void (*p_ply_error_cb)(p_ply ply, const char *message);
  * ply: handle returned by ply_open or ply_create
  * idata,pdata: contextual information set in ply_open or ply_create
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_get_ply_user_data(p_ply ply, void **pdata, long *idata);
 
 /* ----------------------------------------------------------------------
@@ -68,6 +83,8 @@ int ply_get_ply_user_data(p_ply ply, void **pdata, long *idata);
  *
  * Returns 1 if successful, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 p_ply ply_open(const char *name, p_ply_error_cb error_cb, long idata,
         void *pdata);
 
@@ -78,6 +95,8 @@ p_ply ply_open(const char *name, p_ply_error_cb error_cb, long idata,
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_read_header(p_ply ply);
 
 /* ----------------------------------------------------------------------
@@ -101,6 +120,8 @@ typedef int (*p_ply_read_cb)(p_ply_argument argument);
  * Returns 0 if no element or no property in element, returns the
  * number of element instances otherwise.
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 long ply_set_read_cb(p_ply ply, const char *element_name,
         const char *property_name, p_ply_read_cb read_cb,
         void *pdata, long idata);
@@ -115,6 +136,8 @@ long ply_set_read_cb(p_ply ply, const char *element_name,
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_get_argument_element(p_ply_argument argument,
         p_ply_element *element, long *instance_index);
 
@@ -128,6 +151,8 @@ int ply_get_argument_element(p_ply_argument argument,
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_get_argument_property(p_ply_argument argument,
         p_ply_property *property, long *length, long *value_index);
 
@@ -139,6 +164,8 @@ int ply_get_argument_property(p_ply_argument argument,
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_get_argument_user_data(p_ply_argument argument, void **pdata,
         long *idata);
 
@@ -149,6 +176,8 @@ int ply_get_argument_user_data(p_ply_argument argument, void **pdata,
  *
  * Returns the current data item
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 double ply_get_argument_value(p_ply_argument argument);
 
 /* ----------------------------------------------------------------------
@@ -159,6 +188,8 @@ double ply_get_argument_value(p_ply_argument argument);
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_read(p_ply ply);
 
 /* ----------------------------------------------------------------------
@@ -170,6 +201,8 @@ int ply_read(p_ply ply);
  *
  * Returns element if successfull or NULL if no more elements
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 p_ply_element ply_get_next_element(p_ply ply, p_ply_element last);
 
 /* ----------------------------------------------------------------------
@@ -181,6 +214,8 @@ p_ply_element ply_get_next_element(p_ply ply, p_ply_element last);
  *
  * Returns comment if successfull or NULL if no more comments
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 const char *ply_get_next_comment(p_ply ply, const char *last);
 
 /* ----------------------------------------------------------------------
@@ -192,6 +227,8 @@ const char *ply_get_next_comment(p_ply ply, const char *last);
  *
  * Returns obj_info if successfull or NULL if no more obj_infos
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 const char *ply_get_next_obj_info(p_ply ply, const char *last);
 
 /* ----------------------------------------------------------------------
@@ -203,6 +240,8 @@ const char *ply_get_next_obj_info(p_ply ply, const char *last);
  *
  * Returns 1 if successfull or 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_get_element_info(p_ply_element element, const char** name,
         long *ninstances);
 
@@ -215,6 +254,8 @@ int ply_get_element_info(p_ply_element element, const char** name,
  *
  * Returns element if successfull or NULL if no more properties
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 p_ply_property ply_get_next_property(p_ply_element element,
         p_ply_property last);
 
@@ -231,6 +272,8 @@ p_ply_property ply_get_next_property(p_ply_element element,
  *
  * Returns 1 if successfull or 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_get_property_info(p_ply_property property, const char** name,
         e_ply_type *type, e_ply_type *length_type, e_ply_type *value_type);
 
@@ -244,6 +287,8 @@ int ply_get_property_info(p_ply_property property, const char** name,
  *
  * Returns handle to PLY file if successfull, NULL otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 p_ply ply_create(const char *name, e_ply_storage_mode storage_mode,
         p_ply_error_cb error_cb, long idata, void *pdata);
 
@@ -256,6 +301,8 @@ p_ply ply_create(const char *name, e_ply_storage_mode storage_mode,
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_add_element(p_ply ply, const char *name, long ninstances);
 
 /* ----------------------------------------------------------------------
@@ -269,6 +316,8 @@ int ply_add_element(p_ply ply, const char *name, long ninstances);
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_add_property(p_ply ply, const char *name, e_ply_type type,
         e_ply_type length_type, e_ply_type value_type);
 
@@ -282,6 +331,8 @@ int ply_add_property(p_ply ply, const char *name, e_ply_type type,
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_add_list_property(p_ply ply, const char *name,
         e_ply_type length_type, e_ply_type value_type);
 
@@ -294,6 +345,8 @@ int ply_add_list_property(p_ply ply, const char *name,
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_add_scalar_property(p_ply ply, const char *name, e_ply_type type);
 
 /* ----------------------------------------------------------------------
@@ -304,6 +357,8 @@ int ply_add_scalar_property(p_ply ply, const char *name, e_ply_type type);
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_add_comment(p_ply ply, const char *comment);
 
 /* ----------------------------------------------------------------------
@@ -314,6 +369,8 @@ int ply_add_comment(p_ply ply, const char *comment);
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_add_obj_info(p_ply ply, const char *obj_info);
 
 /* ----------------------------------------------------------------------
@@ -324,6 +381,8 @@ int ply_add_obj_info(p_ply ply, const char *obj_info);
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_write_header(p_ply ply);
 
 /* ----------------------------------------------------------------------
@@ -337,6 +396,8 @@ int ply_write_header(p_ply ply);
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_write(p_ply ply, double value);
 
 /* ----------------------------------------------------------------------
@@ -346,13 +407,14 @@ int ply_write(p_ply ply, double value);
  *
  * Returns 1 if successfull, 0 otherwise
  * ---------------------------------------------------------------------- */
+
+RPLY_DLL_DEF
 int ply_close(p_ply ply);
 
 #ifdef __cplusplus
-}
+} // extern 'C'
 #endif
 
-#endif /* RPLY_H */
 
 /* ----------------------------------------------------------------------
  * Copyright (C) 2003-2015 Diego Nehab. All rights reserved.
diff --git a/rplyfile.h b/rplyfile.h
index 206e716..1b5a40e 100644
--- a/rplyfile.h
+++ b/rplyfile.h
@@ -9,6 +9,19 @@
  * at the end of this file.
  * ---------------------------------------------------------------------- */
 
+#ifdef RPLY_SHARED_LIB
+
+#ifdef RPLY_BUILD_LIB
+#define RPLY_DLL_DEF __declspec(dllexport)
+#else
+#define RPLY_DLL_DEF __declspec(dllimport)
+#endif // RPLY_BUILD_LIB
+
+#else
+#define RPLY_DLL_DEF  
+#endif // RPLY_SHARED_LIB
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -22,6 +35,7 @@ extern "C" {
  *
  * Returns 1 if successful, 0 otherwise
  * ---------------------------------------------------------------------- */
+RPLY_DLL_DEF
 p_ply ply_open_from_file(FILE *file_pointer, p_ply_error_cb error_cb,
     long idata, void *pdata);
 
@@ -35,6 +49,7 @@ p_ply ply_open_from_file(FILE *file_pointer, p_ply_error_cb error_cb,
  *
  * Returns handle to PLY file if successfull, NULL otherwise
  * ---------------------------------------------------------------------- */
+RPLY_DLL_DEF
 p_ply ply_create_to_file(FILE *file_pointer, e_ply_storage_mode storage_mode,
         p_ply_error_cb error_cb, long idata, void *pdata);