<QOverload> 代理页面

函数

auto	qConstOverload(T memberFunctionPointer)
auto	qNonConstOverload(T memberFunctionPointer)
auto	qOverload(T functionPointer)

函数文档

template <typename T> auto qConstOverload(T memberFunctionPointer)

返回指向常量成员函数的memberFunctionPointer 指针：

    struct Foo {
        void overloadedFunction(int, const QString &);
        void overloadedFunction(int, const QString &) const;
    };
    ... qConstOverload<int, const QString &>(&Foo::overloadedFunction)
    ... qNonConstOverload<int, const QString &>(&Foo::overloadedFunction)

另请参阅 qOverload,qNonConstOverload, 以及基于字符串的连接与基于函数的连接的区别。

template <typename T> auto qNonConstOverload(T memberFunctionPointer)

返回指向非常量成员函数的memberFunctionPointer 指针：

    struct Foo {
        void overloadedFunction(int, const QString &);
        void overloadedFunction(int, const QString &) const;
    };
    ... qConstOverload<int, const QString &>(&Foo::overloadedFunction)
    ... qNonConstOverload<int, const QString &>(&Foo::overloadedFunction)

另请参阅 qOverload, qNonConstOverload，以及基于字符串的连接与基于函数的连接的区别。

template <typename T> auto qOverload(T functionPointer)

返回重载函数的指针。模板参数是函数的参数类型列表。functionPointer 是指向（成员）函数的指针：

    struct Foo {
        void overloadedFunction();
        void overloadedFunction(int, const QString &);
    };
    ... qOverload<>(&Foo::overloadedFunction)
    ... qOverload<int, const QString &>(&Foo::overloadedFunction)

如果成员函数也是 const-重载的，则需要使用qConstOverload 和qNonConstOverload 。

另请参阅 qConstOverload(),qNonConstOverload() 和基于字符串的连接与基于函数的连接的区别。

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