Graphicsview mousemoveevent
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 … WebApr 27, 2024 · Pyqt5 QgraphicsView pan past scroll bar limits. I have a set of predetermined X and Y coordinates that I am using to place QGraphicsItem 's as points and then placing each of those points in a QGraphicsView. I have my panning button set to be the middle mouse button, but I can only pan if I have zoomed in.
Graphicsview mousemoveevent
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WebJan 17, 2024 · Thnaks @dglent!I think the problem is indeed in the mouse pointer! I was able to reproduce the bug when the plot has changed while the mouse is on the plot! 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 …
WebMar 8, 2016 · Teams. Q&A for work. Connect and share knowledge within a single location that is structured and easy to search. Learn more about Teams 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.
WebNov 27, 2024 · Viewed 2k times. 1. I created a where I select a video using QOpenFileDialog and play the video on QGraphicsView. After that I select an area on video using mouse and QRubberBand class and want to draw a rectangle on selected area when I release left mouse click. Since I'm newbie can you tell me which parts of my code is … WebJan 21, 2015 · 4. For certain widgets, you need to use its viewport instead: self.graphicsView.viewport ().installEventFilter (self) ... def eventFilter (self, source, …
WebJul 27, 2013 · 2 Answers Sorted by: 3 mousePressEvent and other methods are not slots. You can't use connect on those methods. You need to install an event filter on your view's viewport () and catch events in your widget's eventFilter method. See Event Filters. Share Improve this answer Follow edited Jul 27, 2013 at 20:03 answered Jul 27, 2013 at 15:09
http://www.uwenku.com/question/p-kaajmwjs-do.html fitzsimmons pub whistlerWebvoid ImageView::mouseMoveEvent (QMouseEvent *event) { if (_pan) { horizontalScrollBar ()->setValue (horizontalScrollBar ()->value () - (event->x () - _panStartX)); verticalScrollBar ()->setValue (verticalScrollBar ()->value () - (event->y () - _panStartY)); _panStartX = event->x (); _panStartY = event->y (); event->accept (); return; } … fitz simmons schoolWebMay 14, 2024 · 1. you should create one class that inherits from QGraphicsView. because you need mousePressEvent , mouseReleaseEvent , mouseMoveEvent of QGraphicsView. Then in MainWindow, you need one QGraphicsScene object and I create one QGridLayout and with the addWidget function add my QGraphicsView object to MainWindow UI. So I … can i look up property taxes by addressWebQGraphicsView 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 … can i look up resale license by company nameWebI have a qgraphicsview to plot signal. I would zoom specific area with mouse clicking and rectangle drawing. So I need mouse pressed position and dragged position. ... I can recognize the clicked position but mouseMoveEvent(QMouseEvent * ev) never be calle. and also obj == ui.graphicsView statement in eventFilter never be occurred.What's … can i look up someone\u0027s orcid numberWebJul 29, 2008 · QGraphicsView::mouseMoveEvent( event); event - >ignore (); return; } int dx = event - >x () - _last_position. x(); int dy = event - >y () - _last_position. y(); //save … fitzsimmons school in philadelphiaWebDec 12, 2013 · If you set drag mode to QGraphicsView::ScrollHandDrag, the hover events shouldn't be activated during the drag. As long as you call QGraphicsView::mouseMoveEvent from your own mouseMoveEvent function, you should be fine. – thuga Dec 16, 2013 at 8:43 Add a comment 1 Answer Sorted by: 0 … can i look up tickets by license plate