提交测试，基本完成

OfficeAssistant_msvc/exitmanager.h

@@ -2,6 +2,7 @@
 
 #include <QObject>
 #include <QList>
+#include "sqlitehelper.h"
 template <typename T>
 class AutoDeleteList
 {
@@ -37,7 +38,9 @@ public:
 	// <20>˳<EFBFBD>Ӧ<EFBFBD>ó<EFBFBD><C3B3><EFBFBD>
 	void exit(int exitCode = 0)
 	{
-		
+		SQLiteHelper sqlite_helper;
+		sqlite_helper.db.close();
+		QSqlDatabase::removeDatabase("mydb");
 		// <20><><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD>Ӧ<EFBFBD>ó<EFBFBD><C3B3><EFBFBD><EFBFBD>ź<EFBFBD>
 		emit exitApplication(exitCode);
 	}