std::function<void(QMouseEvent* event)> pf_mouseMoveEvent = 0; std::function<void(QMouseEvent* event)> pf_wheelEvent = 0; std::function<void(QKeyEvent* event)> pf_keyPressEvent = 0; std::function<void(QKeyEvent* event)> pf_keyReleaseEvent = 0; std::function<void(QFocusEvent* event...
Q_OBJECTpublic:TestQtMainThread(QWidget* parent = Q_NULLPTR);template<typenameT>TAppendTask(conststd::function<T()>& task); signals:voidSIGAppendTask(conststd::function<QVariant()>& task, QVariant& ret);voidSIGAppendTask(conststd::function<void()>& task);privateslots:voidONAppendTask(cons...
Python 系统模块 sys 中有三个变量 stdin 、 stdout 与 stderr ，分别对应标准输入流、输出流与错误流...
qDebug()<<"end do ui"; }voidMainWindow::toDb() { qDebug()<<"begin do db"; std::future<bool> fut = std::async(&MainWindow::is_prime,this,444444443);//do something while waiting for function to set future://qDebug() << "checking, please wait";//std::chrono::milliseconds span...
为了能清楚观察构造和析构函数的调用,我们可以简单子类化了一下QLabel,然后用Label取代前面的QLabel class Label :public QLabel{ public: Label(const QString& text, QWidget *parent=NULL) :QLabel(text, parent){qDebug("from constructor");} ~Label(){qDebug("from destructor");} }; ...
问Qt中的std：：thread：：thread(<未解析的重载函数type>)EN在QGraphicsScene 上绘制图形时，经常会...
Q_OBJECT public: explicitMainWindow(QWidget*parent=0); ~MainWindow(); private: Ui::MainWindow*ui; boolis_prime(intx) { for(inti=2;i<x;++i) if(x%i==0) returnfalse; returntrue; } voidtoUi(); voidtoDb(); privateslots:
void registerModel(QString const &category, std::unique_ptr<ModelType> uniqueModel = std::make_unique<ModelType>()) void registerModel(QString const &category, std::unique_ptr<ModelType> uniqueModel = detail::make_unique<ModelType>()) { registerModel<ModelType>(std::move(uniqueModel), ca...
void QCoreApplication::postEvent ( QObject * receiver, QEvent * event ) [static] Note: This function is thread-safe. 所以,我们可以直接使用这个它(通过自定义事件来传递信息): #include <QtGui/QApplication> #include <QtGui/QSpinBox> #include <thread> class Event:public QEvent { public: Event...
a. Function blocks, class/struct definitions, namespacesint myFunction(int a) { // code } void myFunction() {} // empty body MyClass::MyClass(int *parent) : m_parent {parent} { // initialize } int MyClass::myMethod(int a) { // code } class MyOtherClass { public: // code ...