检查是否有任何对象在连接信号之前被销毁或未正确初始化。 通过以上步骤,你应该能够定位并解决“No such signal”错误。如果问题依然存在,建议仔细检查代码逻辑和对象生命周期,或者查阅Qt的官方文档和社区论坛以获取更多帮助。
QObject::connect: No such signal QMdiArea::windowActivated (QWidget*) in /home/steve/apps/OpenCASCADE-7.3.0/_test/Open CASCADE Tutorial/Common/ApplicationCommon.cxx:421 ... FINISH: run_tutorial.sh root@debian1:/home/steve/apps/OpenCASCADE-7.3.0/_test/Open CASCADE Tutorial/bin/Debug# === ...
2/var/run/dbus/system_bus_socket: No such file or directory" Object::connect: No such signal QDBusAbstractInterface::DeviceAdded(QString) Object::connect: (receiver name: 'Widget') Object::connect: No such signal QDBusAbstractInterface::DeviceRemoved(QString) Object::connect: (receiver name:...
父类A继承自QWidget,所以父类A自动添加了Q_OBJECT。 子类B继承自父类A,子类B没有添加Q_OBJECT。在子类B中给动态创建的控件添加事件和槽。编译通过,无警告,无错误。运行时,应用程序输出栏显示:QObject::connect: No Such slot ... 网上扒拉扒拉很多网友给的方案是这样的: 以后要是碰到no such slot的问题1、...
g_signal_connect(stop_button, "clicked", G_CALLBACK(on_button_stop_clicked), NULL); /* Show the window and start the main loop */ gtk_container_add(GTK_CONTAINER(window), box); gtk_widget_show_all(window); gtk_main(); return 0; ...
Building a Widget Single Widget Extension supports multiple kinds of widgets on different platforms Possible configurations: Static (Workout widget) or Intent-Based (Reminder widget that can be personalized) Supported Families: A widget can enable one or many of the following families: systemSmall,...
picLabel->path =QString(fileName); picLabel->setPixmap(QPixmap::fromImage(image)); ui->scrollArea->setWidget(picLabel);connect(picLabel,SIGNAL(leftButtonPressed(QString&)),ui->bigImgLabel,SLOT(mousePressEvent(QString&))); } this is where i create bigPicLabel (constructor of ExportWindow...
g_signal_connect(stop_button, "clicked", G_CALLBACK(on_button_stop_clicked), NULL); /* Show the window and start the main loop */ gtk_container_add(GTK_CONTAINER(window), box); gtk_widget_show_all(window); gtk_main(); return 0; ...
customContextMenuRequested(const QPoint & pos);是树自带的信号 不需要定义，直接继承使用
Android.Widget.Inline Android.Window Dalvik.Annotation Dalvik.Annotation.Optimization Dalvik.Bytecode Dalvik.SystemInterop Java.Awt.Font Java.Beans Java.Interop Java.Interop.Expressions Java.Interop.Tools.JavaCallableWrappers Java.IO Java.Lang Java.Lang.Annotation Java.Lang.Invoke Java.Lang.Ref Java.Lang...