请教报"non-st..目前报:error: Invalid use of 'this' outside of a non-static member function这个是子涵数,猜是因为没引用于ui那边,
comProer: 编译错误 /home/work/QT/DialogCode/dialogcode.cpp:28: error: invalid use of non-static member function connect(button,&QPushButton::clicked,label2,showArea); ^ 2014-8-31 22:25回复 我也说一句 Mahonegmail 铁杆吧友 8 showArea前面加个&试试。六月...
Qt error: reference to non-static member function must be called 对应报错函数应设置为静态类成员(如static void… \ static int…) Qt error: invalid use of member in static member function static型函数只能访问static型变量 以上两问题的解释[C++编译报错:invalid use of non-static member function - ...
-Wc++98-compat use of non-static data member %0 in an unevaluated context is incompatible with C++98 -Wc++98-compat friend function %0 would be implicitly redefined in C++98 -Wc++98-compat %select{class template|class template partial|variable template|variable template partial|function template...
//Connect a signal to a pointer to qobject member function //1 发送者和接收者的 类型 const typename QtPrivate::FunctionPointer<Func1>::Object 信号和槽的类型 template <typename Func1, typename Func2> static inline QMetaObject::Connection connect(const typename QtPrivate::FunctionPointer<Func1>...
大家好，又见面了，我是你们的朋友全栈君。解决方法: 1.首先，是不是从来都是这种情况，如果只是...
[static] void QMetaType::destruct(int type, void *where) Destructs the value of the given type, located at where. Unlike destroy(), this function only invokes the type's destructor, it doesn't invoke the delete operator. This function was introduced in Qt 5.0. See also construct(). voi...
To access the character at a particular index position, you can use operator[](). On non-const strings, operator[]() returns a reference to a character that can be used on the left side of an assignment. For example: QString str; str.resize(4); str[0] = QChar('U'); str[1] ...
For example, canConvert(Int) would return true when called on a variant containing a string because, in principle, QVariant is able to convert strings of numbers to integers. However, if the string contains non-numeric characters, it cannot be converted to an integer, and any attempt to conv...
Note that non-trivial operations like intersections are not defined for invalid rectangles. A valid rectangle is not empty (i.e., isValid() == !isEmpty()). See also isNull(), isEmpty(), and normalized(). [constexpr noexcept] int QRect::left() const Returns the x-coordinate of the...