Object::connect: No such slot GraphContainer::_SlotOnContextMenuRequested(const QPoint &) Object::connect: No such signal MainWindow::_SignalUpdateSymbolSelection() QLayout: Attempting to add QLayout "" to NewProjectDialog "", which already has a layout QLayout: Attempting to add QLa...
Object::connect: (sender name: 'actionAbout') Object::connect: (receiver name: 'MainWindow') 于是将该connect连接信号和槽函数中的槽函数换成qt自带的 close()函数,编译成功进行操作对应的按钮能正常触发关闭,说明connect()函数没问题,问题是出在槽函数这块 1 2 3 connect(ui->btn_ok,SIGNAL(clicked())...
使用jupyternotebook交互界面执行代码时,始终显示int[*],无法执行编写的代码,检查了代码也没有问题。后来查看后台发现报错了,报错信息如下:“signal only works in main thread” 在网上查了一下说是pyzmq和ipykernel两个包的版本安装不对,于是重新安装这两个包就就可以了。安装命令:安装成功后,启动jupyter ...
Qt No such slot 添加有参数的回调时,提示: No such slot MainWindow::OnPreviewDialogRequestd(QPrinter *) 网上查的是信号和槽的参数不一样。 查询后修改具体形式无效。 connect(printPreDialog, SIGNAL(paintRequested(QPrinter)), SLOT(OnPreviewDialogRequestd(QPrinter))); 最后添加函数生命为private slot:...
(1) } // main window loop loop = func() { // set the layout of GUI layoutT := []gui.Widget{ gui.Label("Enter an expression."), gui.InputText("", 0, text1), // widgets in line layout is aligned left to right gui.Line(gui.Button("Calculate", onButton1Click), gui.Button...
在使用 PyQt5 开发 GUI 应用程序时,如果在信号与槽连接过程中出现AttributeError: 'PyQt5.QtCore.pyqtSignal' object has no attribute 'connect'的错误,这意味着在代码中尝试使用一个不存在的方法。本文将详细解释该错误的原因和解决方法。 错误原因
(1) } // main window loop loop = func() { // set the layout of GUI layoutT := []gui.Widget{ gui.Label("Enter an expression."), gui.InputText("", 0, text1), // widgets in line layout is aligned left to right gui.Line(gui.Button("Calculate", onButton1Click), gui.Button...
21:40:01:673.925 NXSERVER-4.0.367[3115] ERROR: process with pid ‘3127’ has died because signal: 9 21:40:01:674.153 NXSERVER-4.0.367[3115] ERROR: Error while trying to authenticate user:[my username]. NXNssUserManager::auth returned 1 ...
Object::connect: (receiver name: 'MainWindow') 于是将该connect连接信号和槽函数中的槽函数换成qt自带的 close()函数,编译成功进行操作对应的按钮能正常触发关闭,说明connect()函数没问题,问题是出在槽函数这块 1 2 3 connect(ui->btn_ok,SIGNAL(clicked()),this,SLOT(GenerateKey())); ...