engine.load(QUrl(QStringLiteral("qrc:/main.qml")));if (engine.rootObjects().isEmpty())return -1;return app.exec();} 编译错误 D:\nhy\SOURCE\QT5.9\Simulation\SimDemo\main.cpp:8: error: 'QFontDatabase' has not been declared QFontDatabase::addApplicationFont("qrc:/fonts/OpenSans-Regular....
error: ‘QWSInputMethod’ has not been declared修正方法:cd $QTDIR/src/kernel //$DTDIR=/home/opiehome/qt-2.3.10gedit qwindowsystem_qws.h在前面增加以下两行class QWSInputMethod;class QWSGestureMethod;错误二:qvaluestack.h:57: 错误:不能从 ‘QValueListIterator<QString>’ 转换到 ‘const char*...
***编译通过没有遇到的问题,但可能遇到的问题:一,‘QWSInputMethod’has not been declared 修正方法:cd $QTDIR/src/kernel //$DTDIR=/home/opiehome/qt-2.3.10 gedit qwindowsystem_qws.h 在前面增加以下两行class QWSInputMethod; class QWSGestureMethod;二,error: kernel/qpixmapcache.cpp:125:57: 错误...
33: error: ‘uint8_t’ has not been declared static QString toString(uint8_t* cUserId/*, uint16_t cUserIdSize*/); ^ ../src/core.hpp:57:9: error: ‘uint8_t’ does not name a type uint8_t* cUserId; ^ ../src/core.hpp:58:9: error: ‘uint16_t’ does not name a ty...
songlist.cpp:16: error: `ui' was not declared in this scope songlist.cpp:16: error: invalid use of `this' in non-member function songlist.cpp:20: error: `model' was not declared in this scope songlist.cpp:20: error: `QSqlTableModel' has not been declared ...
songlist.cpp:16: error: `ui' was not declared in this scope songlist.cpp:16: error: invalid use of `this' in non-member function songlist.cpp:20: error: `model' was not declared in this scope songlist.cpp:20: error: `QSqlTableModel' has not been declared ...
error: QFileDialog has not been declared error: invalid use of incomplete type 'class QPushButton' Could anyone help me? ^ c++ qt Share Follow asked Sep 5, 2016 at 16:11 user294664 1091212 bronze badges Add a comment 2 Answers Sorted by: 3 Try to include the missing headers #...
上图是Qt Document里Container Classes章节对各容器类性能的统计。从这里也可以看出,QList其实是个特殊的QVector,QSet其实是个特殊的QHash。 === Benchmark算法 设计数据元素均为int,无论key还是value(懒得构造随机string了)。这个benchmark写的较早,后来维护文章时把std::hash改为了std::unordered_map,把std::se...
Qterror--- 'XXX' has not been declared 1、头文件没加 2、调用函数者的头文件在XXX头文件的下方 QT 头文件 调用函数 转载 mob604757042166 2018-03-15 10:52:00 851阅读 error: zlib.h:no such file or directory 今天在编译openssl时,出现了error: zlib.h:no such file or directory 去看了下出错...
Internally, QList<T> is represented as an array of T if sizeof(T) <= sizeof(void*) and T has been declared to be either a Q_MOVABLE_TYPE or a Q_PRIMITIVE_TYPE using Q_DECLARE_TYPEINFO. Otherwise, QList<T> is represented as an array of T* and the items are allocated on the...