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#1qobject_cast用法_masikkk的博客
2013年3月30日 — 函数原型：T qobject_cast ( QObject * object )本方法返回object向下的转型T，如果转型不成功则返回0，如果传入的object本身就是0则返回0。
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#2QObject Class | Qt Core 5.15.8 - Qt Documentation
The qobject_cast() function behaves similarly to the standard C++ dynamic_cast() , with the advantages that it doesn't require RTTI support and it works across ...
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#3What is qobject_cast? - Stack Overflow
qobject_cast is same thing as dynamic_cast , but works only for children of QObject . It ...
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#4Qt Tutorial => qobject_cast
Example. T qobject_cast(QObject *object). A functionality which is added by deriving from QObject and using the Q_OBJECT macro is the ability to use the ...
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#5QT qobject_cast用法_心跳的博客-程序员宝宝
文档：T qobject_cast(QObject * object)Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns 0.
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#6qobject_cast - 程序员秘密
qobject_cast ()动态转换QObject类的类型。qobject_cast()函数和标准C++ ... T qobject_cast ( QObject * object ) 本方法返回object向下的转型T，如果转型不成功则 ...
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#7qobject_cast<T>() 函式 - 痞客邦
qobject_cast <T>() ：將參數的資料型態轉成T。 ※ T必須繼承QObject、必須聲明Q_OBJECT. 主要使用的地方在於接收SIGNAL對應SLOT的時機，有可能不同 ...
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#8Qt之qobject_cast的描述
qobject_cast 的原型如下如果传入的object是T或者T的子类，则返回T，否则返回0。如果object是0则返回0。类T必须直接（或间接）继...,CodeAntenna技术文章技术问题代码 ...
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#9qobject_cast用法- 润新知 - 编程部落
函数原型：T qobject_cast ( QObject * object )本方法返回object向下的转型T，如果转型不成功则返回0，如果传入的object本身就是0则返回0。在使用时有两个限制.
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#10c++ - qobject_cast如何工作？ - IT閱讀 - ITREAD01.COM - 程式 ...
template <class T> inline T qobject_cast(const QObject *object) { // this will cause a compilation error if T is not const register T ptr ...
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#11qobject_cast用法和sender()函數 - 台部落
qobject_cast 用法. 函數原型：. T qobject_cast ( QObject * object ). 本方法返回object向下的轉型T，如果轉型不成功則返回0，如果傳入的object本身 ...
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#12Qt之qobject_cast的描述 - 代码先锋网
QObject *obj = new QTimer; // QTimer继承QObject QTimer *timer = qobject_cast<QTimer *>(obj); // timer == (QObject *)obj QAbstractButton *button ...
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#13c++ - reinterpret_cast用法- qobject_cast是如何工作的?
請記住， qobject_cast<T>(obj) 是一種將 QObject 動態轉換為目標類型 T ，目標類型 T 也是從 QObject 派生的。 現在，為了使其工作，宏 Q_OBJECT 應該包含在類 T 的 ...
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#14【C++】Qt介面(interface)或抽象類和qobject_cast() - 程式人生
是否可以使用 qobject_cast() 從類轉換為介面之一？如果我從 QObject 派生所有介面，則由於歧義 QObject 引用而導致錯誤。但是，如果只有基類繼承自 ...
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#15qobject_cast_51CTO博客
51CTO博客已为您找到关于qobject_cast的相关内容,包含IT学习相关文档代码介绍、相关教程视频课程,以及qobject_cast问答内容。更多qobject_cast相关解答可以来51CTO博客 ...
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#16Qt中qobject_cast的使用 - 白红宇个人博客
注释内容报错，查看qobjec_cast。 T qobject_cast ( QObject * object ). 本方法返回object向下的转型T，如果转型不成功则返回0，如果传入 ...
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#17qobject_cast用法 - 小马的笔记
qobject_cast 用法. 函数原型. T qobject_cast ( QObject * object ) 本方法返回object向下的转型T，如果转型不成功则返回0，如果传入的object本身 ...
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#18multiple slots are bound to the same signal - ProgrammerSought
function prototype template <class T> inline T qobject_cast(const QObject *object). Returns T if the passed object is T or a subclass of T, ...
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#19qobject_cast用法总结_YBAdiam的博客-程序员信息网
函数原型T qobject_cast ( QObject * object )本方法返回object向下的转型T，如果转型不成功则返回0，如果传入的object本身就是0则返回0。在使用时有两个限制： 1# T ...
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#20QT qobject_cast用法-爱代码爱编程
文档：T qobject_cast(QObject * object)Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns 0.
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#21对象列表, Q_GADGET, Qt deleteLater, Qobject_cast, Qt 连接 ...
QObjectList 是一个T qobject_cast (QObject *object) 通过从QObject 派生并使用Q_OBJECT 宏添加的功能是使用qobject_cast 的能力。 Qt - QObject. qobject_cast() 函数的 ...
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#22Type Identification and qobject_cast - Flylib.com
Type Identification and qobject_cast / Meta Objects, Properties, and Reflective Programming from An Introduction to Design Patterns in C++ with Qt 4.
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#23元對象系統_百度百科
QWidget *widget = qobject_cast<QWidget *>(obj);到MyWidget的轉型可以成功是因為qobject_cast()並沒有對Qt內建對象和定製的擴展對象分別對待。
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#24Call to 'qobject_cast' is ambiguous : CPP-8652 - YouTrack
QNetworkReply *reply = qobject_cast<QNetworkReply *>(sender()); // Call to 'qobject_cast' is ambiguous return 0; }. example of CMakeLists.txt.
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#25What is Qobject_cast? - SidmartinBio
qobject_cast is same thing as dynamic_cast , but works only for children of QObject . It doesn't require RTTI and it works much faster, ...
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#26qgspanelwidgetstack.cpp - QGIS API Documentation
50 return qobject_cast<QgsPanelWidget *>( mStackedWidget->widget( 0 ) ); ... 67 if ( QgsPanelWidget *panelWidget = qobject_cast<QgsPanelWidget ...
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#27qobject cast | 他山教程，只選擇最優質的自學材料
通過從 QObject 派生並使用 Q_OBJECT 巨集新增的功能是使用 qobject_cast 的能力。 例： placeholderCopy class myObject : public QObject { ...
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#28QT：qobject_cast有问题- 或代码
QT：qobject_cast有问题- | 我派生了QGraphicsItem和QGraphicsScene类。我希望项目能够调用scene（）并获得derviedGraphicsItem *而不是QGraphicsItem *，所以我重新 ...
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#29元对象系统| Qt Core 6.0.1 - 中文文档编制,帮助,手册,教程
也可以履行动态铸造使用 qobject_cast () 在 QObject 类。 qobject_cast () 函数行为类似于标准C++ dynamic_cast() ，它的优点是不要求RTTI (运行时类型信息) 支持，且 ...
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#30qobject_cast用法总结(qt) - AI牛丝
函数原型T qobject_cast ( QObject * object )本方法返回object向下的转型T，如果转型不成功则返回0，如果传入的object本身就是0则返回0。
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#31Thread: qobject_cast fails in slot - Qt Centre Forum
Problem: qobject_cast returns zero when I try to cast the QOjbect* the slot received to my_widget*. If I try the cast directly in the ...
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#32qobject_cast(sender())用法 - 程序员大本营
qobject_cast <QPushButton *>(sender()) 1、当QPushButton发出一个信号时就记录发出这个信号的对象，sender获取发出信号的对象； 2、当有多个OBject发出信号时可 ...
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#33Qt之qobject_cast的描述_linuxweiyh的博客 - 程序员ITS401
qobject_cast 的原型如下T qobject_cast(QObject *object)如果传入的object是T或者T的子类，则返回T，否则返回0。如果object是0则返回0。 类T必须直接（或间接）继承 ...
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#34qobject_cast用法- findumars - 博客园
官方文档： 函数原型： T qobject_cast ( QObject * object ) 本方法返回object向下的转型T，如果转型不成功则返回0，如果传入的object本身就是0则 ...
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#35qobject_cast<>() application - Code World
qobject_cast () performs a dynamic cast on the QObject class. The behavior of the qobject_cast() function is similar to the standard c++ ...
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#36C++ QDateTimeEdit::blockSignals方法代碼示例- 純淨天空
... //if not binding, just leave widget = qobject_cast<QLabel*>(receiver); if (widget) { QLabel* edit = qobject_cast<QLabel*>(receiver); QString value ...
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#37【Qt】qobject_cast用法
qobject_cast ()函数和标准C++的dynamic_cast()功能类似，只是其不需要RTTI的支持，而且可以跨越动态连接库的边界。它尝试将它的参数cast成尖括号内的对象 ...
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#38qobject_cast用法- findumars - 程序员ITS500
官方文档： 函数原型： T qobject_cast ( QObject * object ) 本方法返回object向下的转型T，如果转型不成功则返回0，如果传入的object本身就是0则返回0。
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#39qobject_cast＜＞()应用_枫影竹韵的博客-程序员宅基地
qobject_cast ()对QObject类执行动态强制转换。qobject_cast()函数的行为类似于标准c++ dynamic_cast()，其优点是它不需要RTTI支持，并且可以跨动态库边界工作。
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#40Qt-qobject_cast用法_tyihh的专栏-程序员资料
函数原型：T qobject_cast ( QObject * object )本方法返回object向下的转型T，如果转型不成功则返回0，如果传入的object本身就是0则返回0。在使用时有两个限制： 1# T ...
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#41qobject_cast--Qt的dynamic_cast_Far5eer的专栏-程序员ITS201
今天给一些代码老外review，老外指出我写的dynamic_cast (pObject)的问题，告诉我要用qobject_cast。 查了下Qt的Assitant关于qobject_cast的介绍: T qobject_cast ...
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#42qobject_cast＜＞()应用_枫影竹韵的博客 - 程序员ITS203
qobject_cast ()对QObject类执行动态强制转换。qobject_cast()函数的行为类似于标准c++ dynamic_cast()，其优点是它不需要RTTI支持，并且可以跨动态库边界工作。
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#43Safe way of conversion --qobject_cast - Programmer Sought
1, qobject_cast usage. Prototype: T qobject_cast ( QObject * object ). This method returns the object downward transition TIf the transitionUnsuccessful ...
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#44Qt动态映射qobject_cast()_std::cout"helloworld"std - 程序员 ...
对于QObject及其子类可以通过qobject_cast()函数进行动态映射dynamic cast。假设QMyWidget是QWidget的子类，并且在类定义中声明了Q_OBJECT宏，QObject *obj = new ...
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#45qobject.h source code [qtbase/src/corelib/kernel/qobject.h]
523, "qobject_cast requires the type to have a Q_OBJECT macro" );. 524, return static_cast<T>(ObjType::staticMetaObject.cast(object));.
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#46c++ - qobject_cast 如何工作？ - IT工具网
template <class T> inline T qobject_cast(const QObject *object) { // this will cause a compilation error if T is not const register T ptr ...
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#47Qt 4.4.3: QObject Class Reference
T qobject_cast ( QObject * object ) ... It is much faster than qobject_cast<QWidget *>(obj) or obj->inherits("QWidget").
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#48元對象系統 - 中文百科知識
除此之外你還可以用qobject_cast()動態轉換QObject類的類型。qobject_cast()函式和標準C++的dynamic_cast()功能類似，只是其不需要RTTI的支持，而且可以跨越動態連線庫 ...
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#49Qt 4.1: QObject Class Reference
T qobject_cast ( QObject * object ) ... It is much faster than qobject_cast<QWidget>(obj) or obj->inherits("QWidget").
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#50[Interest] qobject_cast, static libraries and plugins - Mailing Lists
On sexta-feira, 9 de agosto de 2013 17:47:12, Jan Kundrát wrote: > Hi, it looks that I cannot use qobject_cast in the following scenario: ...
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#51关于投放：QT：qobject_cast出现问题 - 码农家园
QT: trouble with qobject_cast我派生了QGraphicsItem和QGraphicsScene类。我希望项目能够调用scene()并获得derviedGraphicsItem *而 ...
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#52qobject_cast vs static_cast - QTCN开发网- Powered by phpwind
目前在windows 7下写一个qt程序,发现了一个奇怪的问题 假定T继承了QObject, 在正常的slot函数中T * t=qobject_cast<T*>(this->sender()); ...
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#53What is qobject_cast? - DevDreamz
Before you start learning what qobject_cast is, you would need to know what C++'s dynamic_cast is. Dynamic cast is all about polymorphism.
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#54qobject_cast - 极客分享
qobject_cast · 1、四个概念 向上转型：子类转换为父类，使用 dynamic_cast<type_id>(expression) ，这种转换相对来说比较安全不会有数据的丢失； · 2、函数 ...
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#55QT的Meta Object系統 - w3c學習教程
在qobject的一系列類上使用qobject_cast()可以做到動態型別轉換。qobject_cast()函式和標準c++的dynamic_cast()類似，不需要rtti的支援，就能在不同的 ...
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#56QVariant value<QObject>(), qvariant_cast ... - GitHub
QVariant value<QObject>(), qvariant_cast, qobject_cast implementation #81. Open. iWeaverMan opened this issue on Sep 11, 2018 · 1 comment.
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#57Which is an example of QObject cast in Qt? - QuickAdviser
T qobject_cast (QObject *object) A functionality which is added by deriving from QObject and using the Q_OBJECT macro is the ability to use ...
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#58qobject_cast vs static_cast - Helping Hands for Children in Need
Many of the Qt features (signals-slots, qobject_cast, MetaObjects, Parent Child representation) are implemented with standard C++ techniques, ...
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#59Meta-Object System - Qt 4.2
The cast to MyWidget is successful because qobject_cast() makes no distinction between built-in Qt types and custom types. QLabel *label = qobject_cast<QLabel *> ...
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#60How does qobject_cast work? - MicroEducate
Especially as to what reinterpret_cast<T>(0) does? template <class T> inline T qobject_cast(const QObject *object) { // this will cause a ...
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#61QObject Casting (qobject_cast) - 어쩌다보니 - 티스토리
QObject Casting (qobject_cast) ... Qt 는 QObject 를 부모 클래스로 하는 클래스를 생성하는 방법으로 메타 오브젝트 프로그래밍을 지원합니다. Qt 를 ...
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#62Qt中通过信号槽函数获取发送信号的对象（qobject_cast
Qt中通过信号槽函数获取发送信号的对象（qobject_cast、sender），灰信网，软件开发博客聚合，程序员专属的优秀博客文章阅读平台。
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#63Что такое qobject_cast? – 2 Ответа - overcoder
Прежде чем вы начнете изучать, что такое qobject_cast, вам нужно знать, что C++ dynamic_cast.... Вопрос по теме: c++, qt, dynamic-cast, qobject.
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#64Coming Soon: Prefer qobject_cast() over isA()/inherits() - Marc ...
Coming Soon: Prefer qobject_cast() over isA()/inherits(). Coming soon… Rate this: Share this: Twitter · Reddit · Email · Print. Like this: Like Loading.
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#65[UBSAN] qt-4.6 and qt-4.7 applications using qobject_cast ...
This is actually a bug in the qt headers, which contains this undefined construct: template <class T> inline T qobject_cast(QObject *object) ...
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#67QVariant value<QObject>(), qvariant_cast, qobject_cast ...
QVariant value<QObject>(), qvariant_cast, qobject_cast implementation #81. How to get an object value from qvariant, the generated class does not have this ...
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#68qobject_cast如何工作？ | 经验摘录 - 问题列表- 第1页
qobject_cast 如何工作？ ronag 39 c++ qt casting static-cast reinterpret-cast. 我刚刚在Qt中找到了以下代码,我对这里发生的事情感到有些困惑.
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#69Qt sender_qobject_cast用法 - 我的IT博客
函数原型. T qobject_cast ( QObject * object ) 本方法返回object向下的转型T，如果转型不成功则返回0，如果传入的object本身就是0则返回0。
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#70C++ GUI Programming with Qt 4 - 第 209 頁 - Google 圖書結果
We use qobject_cast<T>() to ensure that the drag comes from a ProjectListWidget. If all is correct, we tell Qt that we are ready to accept the action as a ...
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#71Qt 5.9 C++开发指南 - Google 圖書結果
也可以将其成功投射为 QMywidget ,即: QMyWidget * myWidget qobject_cast < QMyWidget * > ( obj ) ;投射为 QMywidget 是成功的,因为 qobject_cast (并不区分 Qt 内建 ...
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#72C++-GUI-Programmierung mit Qt 4: die offizielle Einführung
Mit qobject_cast < T > ( ) prüfen wir , ob das Plug - In die Schnittstelle TextArtInterface implementiert . Immer wenn die Typumwandlung erfolgreich ...
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#73The Book of Qt 4: The Art of Building Qt Applications
Our combo box serves as an editor widget, which is why we convert the object via qobject_cast: if (!box || !model) QItemDelegate::setEditorData(editor, ...
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#74qobject_cast如何工作？ - Dovov编程网
特别是对于 reinterpret_cast<T>(0) 是什么？ template <class T> inline T qobject_cast(const QObject *object) { // this will cause a compilation error if ...
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#75尝试使用qobject_cast构造指针时的编译问题 - Thinbug
我正在Qt中实现低级插件，但偶然发现了一个奇怪的编译错误。 当我尝试使用qobject_cast将插件实例.
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#76Что такое qobject_cast? - CodeRoad
Прежде чем вы начнете изучать, что такое qobject_cast , вам нужно будет знать, что такое C++ dynamic_cast . Динамический бросок-это все о полиморфизме .
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#77qobject_cast vs static_cast - Agencia de Publicidad
Many of the Qt features (signals-slots, qobject_cast, MetaObjects, Parent Child ... The qobject_cast() function behaves similarly to the standard C++ ...
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#78Qt qobject_cast usage downcast - TitanWolf
T qobject_cast ( QObject * object ). This method returns the downward transformation T of the object. If the transformation is unsuccessful, it returns 0.
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#79qobject_cast没有Q_OBJECT宏错误- 堆栈内存溢出
error: static assertion failed: qobject_cast requires the type to have a Q_OBJECT macro. 我不太确定这是怎么回事，这些都是Qt内置类型，所以我在做什么错？
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