diff --git a/inc/hgl/io/DataInputStream.h b/inc/hgl/io/DataInputStream.h
index 64b12ec1..27084380 100644
--- a/inc/hgl/io/DataInputStream.h
+++ b/inc/hgl/io/DataInputStream.h
@@ -56,7 +56,7 @@ namespace hgl
                 return(in?in->ReadFully(buf,size):-1);
             }
 
-            virtual int64 Seek(int64 offset,SeekOrigin so=soBegin)
+            virtual int64 Seek(int64 offset,SeekOrigin so=SeekOrigin::Begin)
             {
                 return(in?in->Seek(offset,so):-1);
             }
diff --git a/inc/hgl/io/DataOutputStream.h b/inc/hgl/io/DataOutputStream.h
index ebccb501..e1e7d294 100644
--- a/inc/hgl/io/DataOutputStream.h
+++ b/inc/hgl/io/DataOutputStream.h
@@ -50,7 +50,7 @@ namespace hgl
                 return(out?out->WriteFully(buf,size):-1);
             }
 
-            virtual int64 Seek(int64 offset,SeekOrigin so=soBegin)
+            virtual int64 Seek(int64 offset,SeekOrigin so=SeekOrigin::Begin)
             {
                 return(out?out->Seek(offset,so):-1);
             }
diff --git a/inc/hgl/io/FileAccess.h b/inc/hgl/io/FileAccess.h
index 85669978..0dc09fa7 100644
--- a/inc/hgl/io/FileAccess.h
+++ b/inc/hgl/io/FileAccess.h
@@ -64,7 +64,7 @@ namespace hgl
             virtual bool CanRestart()const{return CanSeek();}                                       ///<文件是否可复位访问
             virtual bool CanSize()const{return(true);}                                              ///<文件是否可取得长度
 
-            virtual int64 Seek(int64,SeekOrigin=soBegin);                                           ///<定位访问指针
+            virtual int64 Seek(int64,SeekOrigin=SeekOrigin::Begin);                                           ///<定位访问指针
             virtual int64 Tell()const;                                                              ///<取得访问指针位置
             virtual int64 GetSize();                                                                ///<取得文件长度
             virtual bool Restart();                                                                 ///<复位访问指针
diff --git a/inc/hgl/io/FileInputStream.h b/inc/hgl/io/FileInputStream.h
index 72fe582e..83678128 100644
--- a/inc/hgl/io/FileInputStream.h
+++ b/inc/hgl/io/FileInputStream.h
@@ -39,7 +39,7 @@ namespace hgl
             virtual int64   Tell()const;                                                            ///<取当前位置
             virtual int64   GetSize()const;                                                         ///<取得文件长度
             virtual bool    Restart();                                                              ///<复位访问指针
-            virtual int64   Seek(int64,SeekOrigin=soBegin);                                         ///<移动访问指针
+            virtual int64   Seek(int64,SeekOrigin=SeekOrigin::Begin);                                         ///<移动访问指针
 
             virtual int64   Available()const;                                                       ///<剩下的可以不受阻塞访问的字节数
 
diff --git a/inc/hgl/io/FileOutputStream.h b/inc/hgl/io/FileOutputStream.h
index e55d798b..04831031 100644
--- a/inc/hgl/io/FileOutputStream.h
+++ b/inc/hgl/io/FileOutputStream.h
@@ -41,7 +41,7 @@ namespace hgl
             virtual int64   Tell()const;                                                            ///<取当前位置
             virtual int64   GetSize()const;                                                         ///<取得文件长度
             virtual bool    Restart();                                                              ///<复位访问指针
-            virtual int64   Seek(int64,SeekOrigin=soBegin);                                         ///<移动访问指针
+            virtual int64   Seek(int64,SeekOrigin=SeekOrigin::Begin);                                         ///<移动访问指针
             virtual int64   Available()const{return -1;}                                            ///<可不受影响写入的字节数
 
             virtual int64   Write(int64,const void *,int64);                                        ///<在指定位置写入指定长度的数据
diff --git a/inc/hgl/io/InputStream.h b/inc/hgl/io/InputStream.h
index c2dd5963..ab26b419 100644
--- a/inc/hgl/io/InputStream.h
+++ b/inc/hgl/io/InputStream.h
@@ -29,7 +29,7 @@ namespace hgl
 
             virtual bool    Restart()=0;                                                            ///<复位访问指针
             virtual int64   Skip(int64)=0;                                                          ///<跳过指定字节不访问
-            virtual int64   Seek(int64,SeekOrigin=soBegin)=0;                                       ///<移动访问指针
+            virtual int64   Seek(int64,SeekOrigin=SeekOrigin::Begin)=0;                                       ///<移动访问指针
             virtual int64   Tell()const=0;                                                          ///<返回当前访问位置
             virtual int64   GetSize()const=0;                                                       ///<取得流长度
             virtual int64   Available()const=0;                                                     ///<剩下的可以不受阻塞访问的字节数
diff --git a/inc/hgl/io/MemoryInputStream.h b/inc/hgl/io/MemoryInputStream.h
index 589f7dcf..8cebe5f4 100644
--- a/inc/hgl/io/MemoryInputStream.h
+++ b/inc/hgl/io/MemoryInputStream.h
@@ -115,19 +115,19 @@ namespace hgl
 
             int64   Skip(int64 bytes)
             {
-                return Seek(bytes,soCurrent);
+                return Seek(bytes,SeekOrigin::Current);
             }
 
             int64   Seek(int64 off,SeekOrigin so)
             {
                 if(!CanSeek())return(-1);
 
-                if(so==soCurrent)
+                if(so==SeekOrigin::Current)
                 {
                     off+=cur_pos;
                 }
                 else
-                if(so==soEnd)
+                if(so==SeekOrigin::End)
                 {
                     off+=buf_size;
                 }
diff --git a/inc/hgl/io/MemoryOutputStream.h b/inc/hgl/io/MemoryOutputStream.h
index cdd528d7..04baf935 100644
--- a/inc/hgl/io/MemoryOutputStream.h
+++ b/inc/hgl/io/MemoryOutputStream.h
@@ -194,16 +194,16 @@ namespace hgl
                 return(true);
             }
 
-            int64   Seek(int64 off,SeekOrigin so=soBegin) override
+            int64   Seek(int64 off,SeekOrigin so=SeekOrigin::Begin) override
             {
                 if(!CanSeek())return(-1);
 
-                if(so==soCurrent)
+                if(so==SeekOrigin::Current)
                 {
                     off+=cur_pos;
                 }
                 else
-                if(so==soEnd)
+                if(so==SeekOrigin::End)
                 {
                     off+=buf_size;
                 }
diff --git a/inc/hgl/io/OutputStream.h b/inc/hgl/io/OutputStream.h
index a0022836..624f6cf6 100644
--- a/inc/hgl/io/OutputStream.h
+++ b/inc/hgl/io/OutputStream.h
@@ -26,7 +26,7 @@ namespace hgl
             virtual bool    CanSize()const=0;                                                       ///<是否可以取得尺寸
 
             virtual bool    Restart()=0;                                                            ///<复位访问指针
-            virtual int64   Seek(int64,SeekOrigin=soBegin)=0;                                       ///<移动访问指针
+            virtual int64   Seek(int64,SeekOrigin=SeekOrigin::Begin)=0;                                       ///<移动访问指针
             virtual int64   Tell()const=0;                                                          ///<返回当前访问位置
             virtual int64   GetSize()const=0;                                                       ///<取得流长度
             virtual int64   Available()const=0;                                                     ///<剩下的可以不受阻塞写入的字节数
diff --git a/inc/hgl/io/RandomAccessFile.h b/inc/hgl/io/RandomAccessFile.h
index 01f1e4ed..ed24b74f 100644
--- a/inc/hgl/io/RandomAccessFile.h
+++ b/inc/hgl/io/RandomAccessFile.h
@@ -40,7 +40,7 @@ namespace hgl
             virtual int64   Tell()const;                                                            ///<取当前位置
             virtual int64   GetSize();                                                              ///<取得文件长度
             virtual bool    Restart();                                                              ///<复位访问指针
-            virtual int64   Seek(int64,SeekOrigin=soBegin);                                         ///<移动访问指针
+            virtual int64   Seek(int64,SeekOrigin=SeekOrigin::Begin);                                         ///<移动访问指针
         };//class RandomAccessFile
     }//namespace io
 }//namespace hgl
diff --git a/inc/hgl/io/SeekAccess.h b/inc/hgl/io/SeekAccess.h
index 1db8198a..89774213 100644
--- a/inc/hgl/io/SeekAccess.h
+++ b/inc/hgl/io/SeekAccess.h
@@ -1,4 +1,4 @@
-#ifndef HGL_IO_SEEK_ACCESS_INCLUDE
+#ifndef HGL_IO_SEEK_ACCESS_INCLUDE
 #define HGL_IO_SEEK_ACCESS_INCLUDE
 
 #include<hgl/type/DataType.h>
@@ -6,11 +6,11 @@ namespace hgl
 {
     namespace io
     {
-        enum_int(SeekOrigin)        /// 资源偏移方向枚举
+        enum class SeekOrigin       /// 资源偏移方向枚举
         {
-            soBegin=0,              ///<从资源最开始处开始，offset必须大于0。移到资源的offset位置
-            soCurrent,              ///<从资源当前位置开始，移到资源的Position+offset位置
-            soEnd                   ///<从资源的结束位置开始，offset必须小于0，表示结束前的字符数
+            Begin=0,              ///<从资源最开始处开始，offset必须大于0。移到资源的offset位置
+            Current,              ///<从资源当前位置开始，移到资源的Position+offset位置
+            End                   ///<从资源的结束位置开始，offset必须小于0，表示结束前的字符数
         };//enum SeekOrigin
 
         /**
@@ -27,7 +27,7 @@ namespace hgl
             virtual bool    CanSize()const=0;                                                       ///<是否可以取得尺寸
 
             virtual bool    Restart()=0;                                                            ///<复位访问指针
-            virtual int64   Seek(int64,SeekOrigin=soBegin)=0;                                       ///<移动访问指针
+            virtual int64   Seek(int64,SeekOrigin=SeekOrigin::Begin)=0;                                       ///<移动访问指针
             virtual int64   Tell()const=0;                                                          ///<返回当前访问位置
             virtual int64   GetSize()const=0;                                                       ///<取得文件长度
         };//class SeekAccess
diff --git a/inc/hgl/type/ResManage.h b/inc/hgl/type/ResManage.h
index a48351c8..a7aa827d 100644
--- a/inc/hgl/type/ResManage.h
+++ b/inc/hgl/type/ResManage.h
@@ -64,6 +64,7 @@ namespace hgl
 
         virtual F Add(T *value)
         {
+            if(!value)return(-1);
             if(!ResManage<F,T>::Add(id_count,value))
                 return(-1);
 
diff --git a/src/Base/IO/FileAccess.cpp b/src/Base/IO/FileAccess.cpp
index 08475d56..2d33cd8a 100644
--- a/src/Base/IO/FileAccess.cpp
+++ b/src/Base/IO/FileAccess.cpp
@@ -109,7 +109,7 @@ namespace hgl
         {
             if(!CanSeek())return(-1);
 
-            return hgl_lseek64(fp,offset,orign);
+            return hgl_lseek64(fp,offset,(int)orign);
         }
 
         int64 FileAccess::Tell()const
@@ -142,7 +142,7 @@ namespace hgl
         {
             if(!CanRestart())return(false);
 
-            return(Seek(0,soBegin)==0);
+            return(Seek(0,SeekOrigin::Begin)==0);
         }
 
         int64 FileAccess::Read(void *buf,int64 size)
@@ -159,7 +159,7 @@ namespace hgl
             int result=hgl_read64(fp,buf,size);
 
             if(result>0)
-                hgl_lseek64(fp,-result,soCurrent);        //回移这个长度
+                hgl_lseek64(fp,-result,(int)SeekOrigin::Current);        //回移这个长度
 
             return result;
         }
diff --git a/src/Base/IO/FileInputStream.cpp b/src/Base/IO/FileInputStream.cpp
index 26fda0a0..ab54e0ea 100644
--- a/src/Base/IO/FileInputStream.cpp
+++ b/src/Base/IO/FileInputStream.cpp
@@ -52,7 +52,7 @@ namespace hgl
         bool    FileInputStream::CanSize    ()const                         {return file?file->CanSize():false;}
         bool    FileInputStream::CanPeek    ()const                         {return file?file->CanPeek():false;}
 
-        int64   FileInputStream::Skip       (int64 bytes)                   {return file?file->Seek(bytes,soCurrent):-1;}
+        int64   FileInputStream::Skip       (int64 bytes)                   {return file?file->Seek(bytes,SeekOrigin::Current):-1;}
         int64   FileInputStream::Tell       ()const                         {return file?file->Tell():-1;}
         int64   FileInputStream::GetSize    ()const                         {return file?file->GetSize():-1;}
         bool    FileInputStream::Restart    ()                              {return file?file->Restart():false;}
diff --git a/src/Platform/Win/FileAccess.cpp b/src/Platform/Win/FileAccess.cpp
index ad750388..be8bcda9 100644
--- a/src/Platform/Win/FileAccess.cpp
+++ b/src/Platform/Win/FileAccess.cpp
@@ -49,7 +49,7 @@ namespace hgl
         {
             if(!CanRead())return(-1);
 
-            if(_lseeki64(fp,offset,soBegin)==offset)
+            if(_lseeki64(fp,offset,(int)SeekOrigin::Begin)==offset)
                 return _read(fp,buf,size);
             else
                 return -1;
@@ -59,7 +59,7 @@ namespace hgl
         {
             if(!CanWrite())return(-1);
 
-            if(_lseeki64(fp,offset,soBegin)==offset)
+            if(_lseeki64(fp,offset,(int)SeekOrigin::Begin)==offset)
                 return _write(fp,buf,size);
             else
                 return -1;