qmetaobject::connectslotsbynam

qmetaobject::connectSlotsByName是Qt中的一个函数，用于自动连接信号和槽。它根据对象名称和信号/槽名称自动连接它们。这个函数通常用于在Qt设计器中创建的UI文件中，以便自动连接信号和槽。

相关问题

QMetaObject::invokeMethod

QMetaObject::invokeMethod是Qt框架提供的一个方法，可以实现在一个对象的线程中调用该对象的函数，即在一个线程中调用另一个线程的函数。它的原型如下：

bool QMetaObject::invokeMethod(QObject *context, const char *method, Qt::ConnectionType type, QGenericReturnArgument ret, QGenericArgument val0 = QGenericArgument(Q_NULLPTR), QGenericArgument val1 = QGenericArgument(), QGenericArgument val2 = QGenericArgument(), QGenericArgument val3 = QGenericArgument(), QGenericArgument val4 = QGenericArgument(), QGenericArgument val5 = QGenericArgument(), QGenericArgument val6 = QGenericArgument(), QGenericArgument val7 = QGenericArgument(), QGenericArgument val8 = QGenericArgument(), QGenericArgument val9 = QGenericArgument())

其中，context参数指定要调用的对象；method参数指定要调用的槽函数的名称；type参数指定连接类型；ret参数指定返回值类型；val0~val9参数指定函数的参数列表。

使用QMetaObject::invokeMethod方法可以在多线程编程中方便地实现跨线程调用函数，避免了线程间的冲突和死锁等问题。

QMetaObject::invokemethod

QMetaObject::invokeMethod is a method provided by the Qt framework that allows you to invoke a method of an object dynamically at runtime, using its name and a set of arguments. This method is particularly useful when dealing with signals and slots, as it allows you to connect signals and slots dynamically, without having to know in advance which methods will be called.

The syntax of the invokeMethod method is as follows:

bool QMetaObject::invokeMethod(QObject *obj, const char *member, Qt::ConnectionType type, QGenericReturnArgument ret, QGenericArgument val0, QGenericArgument val1, QGenericArgument val2, QGenericArgument val3, QGenericArgument val4, QGenericArgument val5, QGenericArgument val6, QGenericArgument val7, QGenericArgument val8, QGenericArgument val9)

Here, `obj` is the object whose method you want to invoke, `member` is the name of the method you want to invoke, and `type` is the type of the signal-slot connection to use. The remaining arguments are the values to pass to the method.

The method returns a boolean value indicating whether the method was successfully invoked or not.