解决no matching member function for call to 'connect' 一般出现这个问题表示没有相应的成员函数调用connect; 出现此原因有可能是采用的QT5的信号和槽机智,里面包含的信号或者槽有不同的参数,即二义性 因为这个信号valueChanged有2个参数类型 所以我们现在需要进行强制类型转换 问题消失 写法:static_cast<>() <>...
否则会出现no matching member function for call to 'connect'这样的报错 建议采用方式一的方式建立信号槽,更容易找到错误 方式一:connect(tcpSocket,&QTcpSocket::disconnected,this,&TcpServer::onClientDisconnected); 方式二:connect(tcpSocket,SIGNAL(disconnected()),this,SLOT(onClientDisconnected()));...
最近初学Qt,在做项目的过程中遇到 E:\QT Project\WinCalculater\mainwindow.cpp:132: 错误:no matching function for call to 'MainWindow::connect(MyButton*&, void (MyButton::*)(), MainWindow* const, const char*)' 的问题,然后我就上网查错误的原因,但是查到的答案都没有解决我的问题,后来自己发现...
while regression build gammaray 3.0.0, I ran into some build failure as below: [ 11%] Building CXX object 3rdparty/kuserfeedback/CMakeFiles/gammaray_kuserfeedback.dir/core/auditloguicontroller.cpp.o cd /tmp/gammaray-20240721-26256-54vr1i...
1 错误呈现 原始代码 connect(ui->SpinBox1,&QSpinBox::valueChanged, ui->Slider1,&QSlider::setValue); 1. 2. 2 原因 QSpinBox类中有两个同名信号,信号和槽函数对接的参数类型不匹配 Q_SIGNALS: voidvalueChanged(int); voidtextChanged(constQString&); ...
main.cpp:31: error: no matching function for call to 'QWebFrame::addToJavaScriptWindowObject(QString, Eh*&)' candidates are: void QWebFrame::addToJavaScriptWindowObject(const QString&, QObject*) This is the source code: #include <string> #include <QtGui/QApplication> #include <QWebFrame>...
Audio::connecttohost(const char*, const char*, const char*) bool connecttohost(const char* host, const char* user = "", const char* pwd = ""); error: no matching function for call to 'Audio::connecttoFS(fs::SDFS&, String&)' ...
Product(char *n);调用：Product p1("car");声明是char*而调用传递的却是字符串字面值，不符合C++...
没有匹配的构造函数。因为你替换了Point的默认构造函数，在Rectangle::Rectangle(float x1,float y1,float x2,float y2){ a.setPoint(x1,y1);b.setPoint(x2,y2);} 没有办法初始化，解决办法有两个，第一个是用Rectangle::Rectangle(float x1,float y1,float x2,float y2)：a(0,0）,b（0...
error: no matching function for call to '' Ask Question Asked8 years, 10 months ago Modified8 years, 10 months ago Viewed2k times 1 I am getting compilation issues for my code: #include<iostream> using namespace std; struct TreeNode { int val; TreeNode *left, *right; TreeNode(int x...