WebSep 22, 2015 · mouseMoveEvent is not called. An eventFilter is not possible, since that would be installed on the QApplication. The widget is far down in the type hierarchy. Passing this widget up to the main function where the QApplication object is created would mess up the code. void mousePressEvent (QMouseEvent* event); void mouseReleaseEvent … WebJul 29, 2008 · QGraphicsView::mouseMoveEvent( event); event - >ignore (); return; } int dx = event - >x () - _last_position. x(); int dy = event - >y () - _last_position. y(); //save mouse position _last_position = event - >pos (); qDebug () << "pos: " << event - >pos (). x() << " " << event - >pos (). y(); if ( event - >buttons () == Qt ::LeftButton) {
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WebAug 22, 2016 · 3. When a mouse event is generated by Qt it is generally passed initially to the QWidget that was under the mouse pointer when the event was generated. If that QWidget accepts the event then no further processing will take place. If the event isn't accepted then Qt may propogate the event to that QWidget 's parent and so on. In your … ear cushions replacement philips lfh2236
c++ - How to refresh QGraphicsView to show changes in the ...
WebThis event class both informs items that the mouse cursor is nearby and allows items to communicate with one another about whether each item will accept *potential* mouse events. It is common for multiple overlapping items to receive hover events and respond by changing their appearance. WebAug 2, 2013 · You need to implement the mouseMoveEvent function from QGraphicsView and accept the event. protected: virtual void QGraphicsView::mouseMoveEvent (QMouseEvent * event) { QPoint mouseLocation = event->pos (); // Do stuff event->accept (); } Accepting the mouse event prevents a parent class from handling that event. WebQGraphicsView translates the mouse and key events into scene events, (events that inherit QGraphicsSceneEvent ,), and forward them to the visualized scene. In the end, it’s the individual item that handles the events and reacts to them. ear cushions for jabra pro 9400