1) I assume that you already compiled your qsqlmysql dll. You should have the qmyssql.dll in the plugins/sqldrivers directory relative to your binary path of your executable. 2) You should also be careful not to mix release and debug dlls (the ones with the d at the end). 3) The static method addDatabase should be used this way: this->connection = QSqlDatabase::addDatabase(DRIVER, NAME); 4) Another point: The reason you get the error 'twice' (you actually just get two errors combined) is that connection.lastError().text() results a combined error message (appended) from the driver and from the connection attempt (see the API more more information about the differences). 5) When i took a closer look at your libs i could not see the non-debug version of libmysql.dll. If you run in release mode you must use the release library since the runtime will look for libmysql.dll and not libmysqld.dll.

Apr 14, 2014. 1, QSqlDatabase: QMYSQL driver not loaded. QSqlDatabase: available drivers: QSQLITE. The MySQL database connection in QT, MySQL database driver was not loaded, in fact is the lack of the libqt4-sql-mysql driver package. The solution: #sudo apt-get install libqt4-sql-mysql. 2, QSqlDatabase: QPSQL. Sep 21, 2011. Install Qt MYSQL Driver for Linux (Ubuntu). QSqlDatabase: QMYSQL driver not loaded. QSqlDatabase: available drivers: QSQLITE QSQLITE2. You might have come across this error, if you are using Qt SDK from Nokia. Now follow these steps to get MYSQL working with Qt Creator. Realtek Hd Sound Effect Manager Free Download For Windows Xp. Go to System->.

This will give you this error. I use msys2 with its qt5 package mingw64/mingw-w64-x86_64-qt5 (5.8.0-3) and looking at the plugins/sqldrivers/qsqlmysql.dll with the reveled dependency on the mariadb.dll, so I installed the mariadb client package: pacman -S mingw64/mingw-w64-x86_64-libmariadbclient and the dll appeared in /mingw64/bin/mariadb.dll, so I just copied the dll next to my app's exe file and it suddenly worked. Even if you don't use msys2, you should still look at your qsqlmysql.dll with Dependency Walker and provide the missing dlls to your app. You can install or and just copy the dlls from the installed path.

豆子老师，您好，我想问下我在QT中进行VTK的编程，已在PRO文件中加入所需要的lib和includepath,但运行程序时它仍然爆这样的错误: error: undefined reference to `_imp___ZN25vtkRenderWindowInteractor15SetRenderWindowEP15vtkRenderWindow’； error: undefined reference to `_imp___ZN16vtkBalloonWidget10AddBalloonEP7vtkPropPKcP12vtkImageData’； error: undefined reference to `_imp___ZN11vtkRenderer8AddActorEP7vtkProp’； error: undefined reference to `_imp___ZN17vtkAbstractWidget23SetWidgetRepresentationEP23vtkWidgetRepresentation’；等等。我在网上查了下，大部分说好像是VTK的库没加进去，但我在PRO加完了LIB呀。求解到底怎样能解决这个问题？. 豆子哥，感谢您的伟大壮举的贡献。看来了你的教程，对于QT5的了解又深刻了一些。 目前正在一步一步学习中，我现在有一个问题就是对于QT5的软件打包问题： 我的打包步骤是：1、将.exe文件单独放在一个文件夹里 2、用depends进行查找所需的dll文件 3、包含MSVC的库文件，编译使用（我的编译器是VS2013） 4、包含paltforms底下的文件库 5、用单文件打包工具进行打包 对于一些简单的软件我测试是可以的，但是发现打包后软件都是几十M感觉太大！！！ 然后我用depends检测时还发现了系统里我自己都没有的库文件，不知道这是为什么，这个库文件的名称是： API-MS-WIN-CORE-SHUTDOWN-L1-1-1. Windows 10 32 Bit Download Iso Kickasstor there. DLL EXT-MS-WIN-NTUSER-UICONTEXT-EXT-L1-1-0.DLL 我不知道为什么用VS的编译器的时候会出现这2个编译库，我用everything查找了一下我电脑里就没有这2个库，不知道如何解决这个问题？ 还有就是关于图片的问题，如果是资源文件，那些图标，是不是也要放到打包的文件夹底下？ 另外就是一个数据库的问题，生成的数据库是在当前目录下，就是打包的文件夹里面，那么我在打包完以后就没法处理数据库的信息了，是不是改一下路径，改成打包以后的文件所在的目录下比较好，还是写死在一个文件夹底下比较好？.