微调

modules/imgfmt/HGImgFmt.cpp

@@ -159,14 +159,12 @@ static HGResult CheckFIFile(const HGChar* fileName, FREE_IMAGE_FORMAT fif, HGBoo
         return HGBASE_ERR_INVALIDARG;
     }
 
-    FIBITMAP *dib = FreeImage_Load(fif, fileName);
-    if (NULL == dib)
+    if (!FreeImage_Validate(fif, fileName))
     {
         return HGBASE_ERR_FAIL;
     }
 
     *isTrue = HGTRUE;
-    FreeImage_Unload(dib);
     return HGBASE_ERR_OK;
 }
 
@@ -245,6 +243,11 @@ static HGResult SaveFIImage(HGImage image, const HGImgFmtSaveInfo* info, const H
         return HGBASE_ERR_INVALIDARG;
     }
 
+    if (!FreeImage_FIFSupportsWriting(fif))
+    {
+        return HGBASE_ERR_FAIL;
+    }
+
     if (NULL != info)
     {
         // 检查合法性