解决多个文件同时拖拽到app，如果包含不支持打开的文件，不会提示错误的问题；

app/scanner2/HGImgThumb.cpp

@@ -1166,6 +1166,7 @@ HGResult HGImgThumb::insertItems(const QStringList &fileNames, int pos, bool app
 
     bool findInThumb = false;
     std::vector<QString> stdFileNames;
+    int count = 0;
     for (int i = 0; i < (int)fileNames.size(); ++i)
     {
         QString stdFileName = getStdFileName(fileNames[i]);
@@ -1205,16 +1206,21 @@ HGResult HGImgThumb::insertItems(const QStringList &fileNames, int pos, bool app
 
                 stdFileNames.push_back(stdFileName);
             }
+            else
+            {
+                count++;
+            }
         }
     }
 
-    if (stdFileNames.empty())
+    if (count > 0)
     {
         if (!fileNames.empty())
         {
             QMessageBox::information(this, tr("tips"), tr("unsupported file format"));
         }
 
+        if (stdFileNames.size() == 0)
             return HGBASE_ERR_INVALIDARG;
     }