Add better resolution to QEXTERN

include/quik_common.h

@@ -3,13 +3,18 @@
 
 #include "stdlib.h"
 
-#if __GNUC__ || __MSC_VER
+#if __GNUC__ || _MSC_VER
     #define __QUIK_FUNCTION__ __FUNCTION__
-    #define QEXTERN extern
 #else
     #define __QUIK_FUNCTION__ NULL
 #endif
 
+#if WIN32 || _MSC_VER > 0 || __MINGW__
+    #define QEXTERN __declspec(dllexport)
+#else
+    #define QEXTERN
+#endif
+
 /**
  * @brief Callback for failed assert function for QUIK redist libraries.
  * @param[in] expr The expression that failed.