changes based on comments

impl/getcomputername.cpp

@@ -1,8 +1,12 @@
 #include "getcomputername.h"
 #include <unistd.h>
 
-int GetComputerName(char *name, size_t len)
+BOOL GetComputerName(LPTSTR name, LPDWORD len)
 {
-  int host =  gethostname(name, len);
-  return host;
+  int host =  gethostname(name, HOST_NAME_MAX);
+  if(host == 0)
+  {
+    return TRUE;
+  }  
+  return FALSE;
 }