解决导出失败时，文件内无图像的问题

app/scanner2/dialog_exportimagefile.cpp

@@ -184,6 +184,10 @@ HGResult Dialog_ExportImageFile::processMultiFileOcr()
     if (HGBASE_ERR_OK == ret)
     {
         ret = HGImgProc_ImageListOCRToFile(ocrMgr, 0, getStdString(fileName).c_str(), NULL, NULL);
+        if (HGBASE_ERR_OK != ret)
+        {
+            QFile::remove(fileName);
+        }
     }
 
     HGImgProc_DestroyOCRMgr(ocrMgr);
@@ -227,6 +231,7 @@ HGResult Dialog_ExportImageFile::processMultiFileGif()
         return ret;
     }
 
+    bool valid = false;
     for (int i = 0; i < m_srcFiles.size(); ++i)
     {
         if (m_stopThread)
@@ -268,6 +273,8 @@ HGResult Dialog_ExportImageFile::processMultiFileGif()
             {
                 break;
             }
+
+            valid = true;
         }
 
         HGImgFmt_CloseImageReader(imgFmtReader);
@@ -278,6 +285,11 @@ HGResult Dialog_ExportImageFile::processMultiFileGif()
     }
 
     HGImgFmt_CloseGifWriter(gifWriter);
+    if (!valid)
+    {
+        QFile::remove(fileName);
+    }
+
     return ret;
 }
 
@@ -293,6 +305,7 @@ HGResult Dialog_ExportImageFile::processMultiFile()
         return ret;
     }
 
+    bool valid = false;
     for (int i = 0; i < m_srcFiles.size(); ++i)
     {
         if (m_stopThread)
@@ -356,6 +369,8 @@ HGResult Dialog_ExportImageFile::processMultiFile()
             {
                 break;
             }
+
+            valid = true;
         }
 
         HGImgFmt_CloseImageReader(imgFmtReader);
@@ -366,6 +381,11 @@ HGResult Dialog_ExportImageFile::processMultiFile()
     }
 
     HGImgFmt_CloseImageWriter(imgFmtWriter);
+    if (!valid)
+    {
+        QFile::remove(fileName);
+    }
+
     return ret;
 }
 
@@ -447,6 +467,7 @@ HGResult Dialog_ExportImageFile::processSingleFile()
 
             if (HGBASE_ERR_OK != ret)
             {
+                QFile::remove(fileName);
                 break;
             }
         }