在Qt和C++编程中,遇到“use of deleted function”错误通常意味着你尝试调用了一个已被明确删除或禁止使用的函数。这种错误常见于以下几种情况: 1. 错误的含义 “use of deleted function”错误表明你尝试使用了一个已经被明确标记为删除(delete)或不可用的函数。这通常是由于设计决策或语言特性导致的,比如防止对象...
/root/Downloads/veyon-3.99.6/core/include/Feature.h:35:25: error: use of deleted function 'QObject& QObject::operator=(const QObject&)' class VEYON_CORE_EXPORT Feature : public QObject ^~~~ In file included from /usr/include/qt5/QtCore/qcoreapplication.h:43:0, from /usr/include...
batperc.cpp:18: error:useofdeletedfunction‘QTextStream& QTextStream::operator=(const QTextStream&)’ stream = QTextStream(&m_batPtr); ^ 我做错了什么? 共1个答案 匿名用户 QTextStream似乎不支持赋值。 像类这样的溪流往往不会。 ~阅读全文~人机检测~...
chromium/v8 错误 ../../../../../qtwebengine/src/3rdparty/chromium/v8/src/codegen/arm64/macro-assembler-arm64.h:1423:25: error: use of deleted function ‘v8::internal::TurboAssembler::TurboAssembler(v8::internal::Isolate*, v8::internal::CodeObjectRequired, std::unique_ptr<v8::internal...
{ // 4 解析动态库符号 instance = (QtPluginInstanceFunction)resolve("qt_plugin_instance"); return instance; } //4 打印信息 if (qt_debug_component()) qWarning() << "QLibraryPrivate::loadPlugin failed on" << fileName << ":" << errorString; pluginState = IsNotAPlugin; return false; ...
qDebug() << "The value has already been deleted"; 提升为 QSharedPointer会检测对象是否被删除 //QScopedPointer类存储指向动态分配对象的指针,并在销毁时删除它 void myFunction(bool useSubClass) { // assuming that MyClass has a virtual destructor ...
43 } 44 #endif 45 46 // copied above 47 QEventLoop *eventLoop = d->threadData->eventLoops.pop(); 48 Q_ASSERT_X(eventLoop == this, "QEventLoop::exec()", "internal error"); 49 Q_UNUSED(eventLoop); // --release warning 50 d->inExec = false; 51 --d->threadData->loopLev...
connect(reply, QOverload<QNetworkReply::NetworkError>::of(&QNetworkReply::error), this, &MyClass::slotError); connect(reply, &QNetworkReply::sslErrors, this, &MyClass::slotSslErrors); //使用 accessManager = new new QNetworkAccessManager(); ...
问为不同的qt版本移动语义EN第一次默认拷贝构造函数的调用是在demo对象的初始化过程中； 两次拷贝...
Alternatively, use the left(), right(), or mid() functions to extract several characters at a time. A QString can embed '\0' characters (QChar::Null). The size() function always returns the size of the whole string, including embedded '\0' characters. After a call to the resize()...