mouseevent

问题 I have some sibling Rectangle elements with a radius property so they appear as circles. Each has a child Item that has a child MouseArea, the purpose of the Item being to implement a "round mouse area" effect (original SO answer). The Item and MouseArea are instrumented such that clicks and drags will only take effect within the visible circular shape of the Rectangle, not within the bounding box that is the real footprint of the Rectangle. Unfortunately there is a glitch illustrated below.

问题 I would like have three mouse actions over a control: left, right and BOTH. I've got the left and right and am currently using the middle button for the third, but am curious how I could use the left and right buttons being pressed together, for those situations where the user has a mouse without a middle button. This would be handled in the OnMouseDown method of a custom control. UPDATE After reviewing the suggested answers, I need to clarify that what I was attempting to do was to take

问题 My class name is HandMotionRecognition and I'm calling getColorPixel method in mouse callback. This is in OpenCV using Visual Studio 2010 and project type is c++ -> cli. The standard code (unless I'm mistaken) to handle mouse events is cvSetMouseCallback( "CameraIn", getColorPixel, (void*) frameHSV); But when I compile it gives a compile time error error C3867: 'HandMotionRecognition::getColorPixel': function call missing argument list; use '&HandMotionRecognition::getColorPixel' to create a

问题 I have made a GUI in Qt that is basically a widget with a QGraphicsView on it i have a function: void GUI::mousePressEvent(QMouseEvent *event) { if(event->button() == Qt::LeftButton) { QPointF mousePoint = ui->graphicsView->mapToScene(event->pos()); qDebug() << mousePoint; } } which links to a public slot: void mousePressEvent(QMouseEvent *event); this shows me on the console the x,y coordinate of where i have clicked, however currently this is working on the entire widget and i ideally would

问题 This question already has answers here : Pass-through mouse events to parent control (3 answers) Closed 6 years ago . I am testing the following code: protected override void OnMouseMove(MouseEventArgs e) { base.OnMouseMove(e); Rectangle leftRect = new Rectangle(0, 0, 32, this.Height); if (leftRect.Contains(e.Location)) { MessageBox.Show("Hello World"); } } The idea is that when the mouse enters a region 32 pixels wide, to the left of the container control, a message appears (OK, in R/L it

问题 There are some links which looks like above > <td><a href="http://Lucifase.com/pages/2000.php?refid=2000" > target="_blank">2000</a><br></td> <td><a > href="http://Lucifase.com/pages/3000.php?refid=3000" > target="_blank">3000</a><br></td> <td><a > href="http://Lucifase.com/pages/4000.php?refid=4000" > target="_blank">4000</a><br></td> <td><a > href="http://Lucifase.com/pages/5000.php?refid=5000" > target="_blank">5000</a><br></td> <td><a > href="http://Lucifase.com/pages/6000.php?refid=6000"

问题 I'm encountering unwanted behavior when using JQuery's $.on("click", function(){}); on touch devices. This is my code below: Code: $(".team").on("mouseover", teamMouseOver); $(".team").on("mouseout", teamMouseOut); $(".team").on("click", teamThumbClicked); function teamMouseOver(event){ console.log(event.type); } function teamMouseOut(event){ // Do something } function teamThumbClicked(event){ console.log("Clicked!"); } Problem: With the code above, tapping on a .team element on a touch

问题 I just tossed this super simple code example into a Flash CS4 IDE frame script, but it doesn't output anything in the console. I'm simply rolling over my mouse over the window, not clicking anything, and nothing is happening. Why doesn't this work as I expect? stage.addEventListener(Event.MOUSE_LEAVE, traceMouse); function traceMouse(Evt:Event):void { trace("Mouse Left Stage"); } ________________________________________________ [EDIT] i find Event.MOUSE_LEAVE incredibly useless. first, it

问题 I have used code described on below mentioned SO answer Change the image source on rollover using jQuery to change image on mouse over. $(function() { $("img") .mouseover(function() { var src = $(this).attr("src").match(/[^\.]+/) + "over.gif"; $(this).attr("src", src); }) .mouseout(function() { var src = $(this).attr("src").replace("over", ""); $(this).attr("src", src); }); }); Problem I am facing is that, my images are in png format which have some transparent areas. That means I have non-

问题 i want to draw different arbitrary figures. Drawing starts when the mouse is clicked in the graphicsview and ends when stop clicking the mouse. However, when starting at a different point in the graphics view to make a new drawing, or to continue on the previous drawing, a line is drawn from the last mouse coordinate of the first drawing, to the first coordinate of the second drawing. The drawings do not necessarily need to be different drawings, but can also just be adjustments to the