| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause |
| 3 | #include <QSqlDatabase> |
| 4 | #include <QSqlQuery> |
| 5 | #include <QSqlDriver> |
| 6 | #include <QVariant> |
| 7 | |
| 8 | void checkHandle() |
| 9 | { |
| 10 | //dummy definitions |
| 11 | typedef void sqlite3; |
| 12 | typedef void PGconn; |
| 13 | typedef void MYSQL; |
| 14 | //! [0] |
| 15 | QSqlDatabase db = QSqlDatabase::database(); |
| 16 | QVariant v = db.driver()->handle(); |
| 17 | if (v.isValid() && (qstrcmp(str1: v.typeName(), str2: "sqlite3*" ) == 0)) { |
| 18 | // v.data() returns a pointer to the handle |
| 19 | sqlite3 *handle = *static_cast<sqlite3 **>(v.data()); |
| 20 | if (handle) { |
| 21 | // ... |
| 22 | } |
| 23 | } |
| 24 | //! [0] |
| 25 | |
| 26 | //! [1] |
| 27 | if (qstrcmp(str1: v.typeName(), str2: "PGconn*" ) == 0) { |
| 28 | PGconn *handle = *static_cast<PGconn **>(v.data()); |
| 29 | if (handle) { |
| 30 | // ... |
| 31 | } |
| 32 | } |
| 33 | |
| 34 | if (qstrcmp(str1: v.typeName(), str2: "MYSQL*" ) == 0) { |
| 35 | MYSQL *handle = *static_cast<MYSQL **>(v.data()); |
| 36 | if (handle) { |
| 37 | // ... |
| 38 | } |
| 39 | } |
| 40 | //! [1] |
| 41 | } |
| 42 | |