c++ - 构建过程中的 QT 和 SQLITE 问题

Question

我正在开发一个使用sqlite的简单应用程序，问题是下面的代码

/*
...
*/
QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
db.setDatabaseName("hellogoodbye"); 

if (!db.open()) {
        QMessageBox::critical(0, qApp->tr("Impossibile aprire il database"),
                              qApp->tr("Non è stato possibile aprire il"
                                       "database"), QMessageBox::Cancel);}

给我:

C:\Qt\2010.04\August-build-desktop/../August/main.cc:17: undefined reference to `_imp___ZN12QSqlDatabase17defaultConnectionE' 
C:\Qt\2010.04\August-build-desktop/../August/main.cc:17: undefined reference to `_imp___ZN12QSqlDatabase11addDatabaseERK7QStringS2_' 
C:\Qt\2010.04\August-build-desktop/../August/main.cc:17: undefined reference to `_imp___ZN12QSqlDatabaseD1Ev' 
C:\Qt\2010.04\August-build-desktop/../August/main.cc:18: undefined reference to `_imp___ZN12QSqlDatabase15setDatabaseNameERK7QString' 
C:\Qt\2010.04\August-build-desktop/../August/main.cc:19: undefined reference to `_imp___ZN12QSqlDatabase4openEv' 
C:\Qt\2010.04\August-build-desktop/../August/main.cc:27: undefined reference to `_imp___ZN12QSqlDatabaseD1Ev' 
C:\Qt\2010.04\August-build-desktop/../August/main.cc:27: undefined reference to `_imp___ZN12QSqlDatabaseD1Ev' 

我正在使用 QTCreator。谁能帮帮我？

Answer 1

您是否将QT += sql 添加到项目文件中？