It is possible to have a file with no dot in its name (for example, Makefile). In a native Windows file dialog, *.* will match such files, while in other types of file dialogs it may not. QGuiApplication Class | Qt GUI 5.12.3 This property gives a precise indication of what desktop entry represents the application and it is needed by the windowing system to retrieve such information without resorting to imprecise heuristics. Drag and Drop | Qt GUI 5.12.3 void DragWidget ::mouseMoveEvent( QMouseEvent *event) { if ( !(event - >buttons() & Qt ::LeftButton)) return; if ((event - >pos() - dragStartPosition) .manhattanLength() < QApplication ::startDragDistance()) return; QDrag *drag = new QDrag( … Calculator Example | Qt Widgets 5.12.3
Qt: How to implement common base-class signal/slot
C++ GUI Programming with Qt4: Creating Dialogs. ... Line 3 includes the definition of QDialog, the base class for dialogs in Qt. ... In the class's private section, we declare two slots. To implement the slots, we will need to access most of the dialog's child widgets, so we keep pointers to them as well. ... qobject(3): base class of all Qt objects - Linux man page void * qt_find_obj_child ( QObject * parent, const char * type, const char * name ) Description. The QObject class is the base class of all Qt objects. QObject is the heart of the Qt object model. The central feature in this model is a very powerful mechanism for seamless object communication called signals and slots. Qt connect “no such slot” when slot definitely does… Qt v4.8.0, VC2010 compiler I have a QMainWindow based class and I'm trying to send it signals involving QUuid However, every time I run it I get the errors: …
QObject Class | Qt Core 5.12.3
Qt for Beginners - Qt Wiki QAbstractButton, a base class for all button types QPushButton QCheckBox QRadioButton QFrame, that displays a frame QLabel, that displays text or picture
If I try to connect the testSendQuuid(QUuid) signal to the slot, I get no such signal and no such slot as well. I cannot for the life of me figure out why Qt is denying the existence of a slot that is most definitely there!
проштудируйте документацию по сигнал-слотам. Насколько я помню, если в файле test.cpp объявляется класс, которыйИ вообще - если знаете С++ более-менее хорошо - не поленитесь, посмотрите исходники Qt, посмотрите... QT: No Such Slot QT: No Such Slot. Обновить. December 2018.Проблема заключается в том, что я постоянно получаю «No Such Slot» ошибки во время выполнения в Qt Creator каждый раз, когда я запускаю окно «Настройка» из моего главного окна.class SettingsWindow : public QWidget {. Qt connect “no such slot” when slot definitely does exist -… Qt v4.8.0, VC2010 compiler I have a QMainWindow based class and I'm trying to send it signals involving QUuid However, every time I run it IIf I try to connect the testSendQuuid(QUuid) signal to the slot, I get no such signal and no such slot as well. I cannot for the life of me figure out why Qt is...
An Introduction to Design Patterns in C++ with Qt 4: Chapter 9 ...
Qt: How to implement common base-class signal/slot
Вероятно, вы забыли использовать макрос Q_OBJECT . Каждый класс, который реализует свои собственные слоты / сигналы, нуждается в этом макросе. Qt не видит сигнал, как исправить? — Toster.ru