qq_42448460的博客

QSqlDatabase db=ConnectionDB::connect_mysql(); QSqlQuery query(db); QString cmdStr=“SELECT\n” “login_table.密码\n” “FROM\n” “login_table\n” “WHERE\n” “login_table.用户名 = ?”; query.prepare(cmdStr); query.bindValue(0,userName); query.exec(); if(query.next()) {

friendGroupName_List=friendGroupName_List.toSet().toList();//去掉重复

Qt::WindowFlags flags = Qt::Dialog; flags |= Qt::WindowCloseButtonHint; newAnddelete_choose->setWindowFlags(flags);