#define PARAMS_VALUE "", 1, false, QHash<int, QString>() //#define PARAMS_DEFINE //#define PARAMS_VALUE typedef function<void(PARAMS_DEFINE)> TestFunc; static int v = 0; void test(PARAMS_DEFINE) { int a = v + 1; int b = a + 2; } static std::optional<TestFunc> normal =...
std::function<void(const QString&)> myPrintFunction; 函数指针 void directPrint(const QString &msg) { qDebug()<<"direct print:"<<msg; } myPrintFunction = directPrint; lambda myPrintFunction = [](const QString &s) { qDebug()<<"lambda print:"<<s; }; std::bind Screen* screen = ...
std::function<void(const QString&)> myPrintFunction;函数指针 void directPrint(const QString &msg){ qDebug()<<"direct print:"<<msg;} myPrintFunction = directPrint;lambda myPrintFunction = [](const QString &s){ qDebug()<<"lambda print:"<<s;};std::bind Screen* screen = new Screen...
// WorkerThread是QThread子类,此段函数在非主线程运行voidWorkerThread::run(){autoresult = main_thread_->AppendTask<QString>([]() {if(QThread::currentThread() != QCoreApplication::instance()->thread()) {return"error!"; }return"ok!"; });qDebug() << result;// QWidget::move(...),...
代码: 执行上面语句,提示如下错误,connect 采用的是 Qt 5 的语法,问题原因是函数 currentIndexChanged 函数重载,有两个不同形参: void currentIndexChanged(int index)和 void currentIndexChanged(const QString &) 编译器不知道要使用哪个函数。 error: no matching f...相关...