QSqlDatabase isopen
C++ (Cpp) QSqlDatabase::isOpen - 30 examples found. These are the top rated real world C++ (Cpp) examples of QSqlDatabase::isOpen extracted from open ... , I think isOpen doesn't check if connection is still alive. It just returns true ... will be kept alive. See also Detecting QSqlDatabase disconnections., QSqlDatabase db = QSqlDatabase::database(CONNECTION_NAME);. // In this code if /etc/init.d/network stop (network closed) db.isOpen() ...,bool QSqlDatabase::isOpen() const. Returns true if the database connection is currently open; otherwise returns false. bool QSqlDatabase::isOpenError() const. ,bool QSqlDatabase::isOpen() const. Returns true if the database connection is currently open; otherwise returns false . bool QSqlDatabase::isOpenError() ... ,bool QSqlDatabase::isOpen() const. Returns true if the database connection is currently open; otherwise returns false . bool QSqlDatabase::isOpenError() ... ,bool QSqlDatabase::isOpen() const. Returns true if the database connection is currently open; otherwise returns false . bool QSqlDatabase::isOpenError() ... ,QSqlDatabase Class. The QSqlDatabase class represents a connection to a database. ... bool, isOpen() const ... bool QSqlDatabase::isOpen() const. Returns ... ,bool QSqlDatabase::isOpen() const. Returns true if the database connection is currently open; otherwise returns false . bool QSqlDatabase::isOpenError() ... ,bool QSqlDatabase::isOpen () const. Returns true if the database connection is currently open; otherwise returns false. bool QSqlDatabase::isOpenError () const.
相關軟體 Qt (64-bit) 資訊 | |
---|---|
Qt 64 位是創建創新設備,現代用戶界面和應用程序的更快,更智能的方式。應用程序的多個屏幕。創建功能強大的應用程序和用戶界面,可以在任何屏幕和任何平台上運行 Qt 應用程序開發.建立您的世界 “我們相信,要成功實施桌面,多屏幕和物聯網戰略,您需要在不犧牲的情況下實現卓越的上市時間這意味著您可以擁有一個超越您的客戶期望的獨特而現代化的用戶界面,並且能夠在所有用戶的屏幕上運行,無論平台選擇如何,都可... Qt (64-bit) 軟體介紹
QSqlDatabase isopen 相關參考資料
C++ (Cpp) QSqlDatabase::isOpen Examples - HotExamples
C++ (Cpp) QSqlDatabase::isOpen - 30 examples found. These are the top rated real world C++ (Cpp) examples of QSqlDatabase::isOpen extracted from open ... https://cpp.hotexamples.com Checking database connection using db.isOpen() - Stack ...
I think isOpen doesn't check if connection is still alive. It just returns true ... will be kept alive. See also Detecting QSqlDatabase disconnections. https://stackoverflow.com How to detect QSqlDatabase is still open??? - Qt Centre
QSqlDatabase db = QSqlDatabase::database(CONNECTION_NAME);. // In this code if /etc/init.d/network stop (network closed) db.isOpen() ... https://www.qtcentre.org QSqlDatabase Class | Qt 4.8 - Qt Documentation
bool QSqlDatabase::isOpen() const. Returns true if the database connection is currently open; otherwise returns false. bool QSqlDatabase::isOpenError() const. https://doc.qt.io QSqlDatabase Class | Qt SQL 5.11 - Qt Documentation
bool QSqlDatabase::isOpen() const. Returns true if the database connection is currently open; otherwise returns false . bool QSqlDatabase::isOpenError() ... https://doc.qt.io QSqlDatabase Class | Qt SQL 5.15.0 - Qt Documentation
bool QSqlDatabase::isOpen() const. Returns true if the database connection is currently open; otherwise returns false . bool QSqlDatabase::isOpenError() ... https://doc.qt.io QSqlDatabase Class | Qt SQL 5.6 - Qt Documentation
bool QSqlDatabase::isOpen() const. Returns true if the database connection is currently open; otherwise returns false . bool QSqlDatabase::isOpenError() ... https://doc.qt.io QSqlDatabase Class | Qt SQL 5.8 - Qt Documentation
QSqlDatabase Class. The QSqlDatabase class represents a connection to a database. ... bool, isOpen() const ... bool QSqlDatabase::isOpen() const. Returns ... https://doc.qt.io QSqlDatabase Class | Qt SQL 5.9 - Qt Documentation
bool QSqlDatabase::isOpen() const. Returns true if the database connection is currently open; otherwise returns false . bool QSqlDatabase::isOpenError() ... https://doc.qt.io Qt 4.8: QSqlDatabase Class Reference
bool QSqlDatabase::isOpen () const. Returns true if the database connection is currently open; otherwise returns false. bool QSqlDatabase::isOpenError () const. https://doc-snapshots.qt.io |