mouse

问题 We may use the following code to clear keyboard buffer: while PeekMessage(Msg, 0, WM_KEYFIRST, WM_KEYLAST, PM_REMOVE or PM_NOYIELD) do; But how may I clear mouse click buffer? 回答1: I got it: while PeekMessage(Msg, 0, WM_MOUSEFIRST, WM_MOUSELAST, PM_REMOVE or PM_NOYIELD) do; 来源： https://stackoverflow.com/questions/2400332/how-to-clear-mouse-click-buffer

问题 Ok, so I want to have the the div '.prodimg' follow the mouse pos. And this works, except it's being positioned relative to the left pos of #wrapper that is a parent div of '.details' and '.prodimg'. Why is this happening? Any suggestions to fix it or alternative methods of tracking the mouse? '.prodimg' top position was relative to the #wrapper top, then I changed it to padding-top and .prodimg was corrected. This has something to do with my problem, but I cant find a similar solution for

问题 It seems that all of the way of retrieving an element under the Mouse relates to Visual Hit testing. Is there some mechanism that I'm missing which would allow me to grab the actual UIElement that represents the current visual tree that the HitTest returns? Summary of what I'm doing: I have a custom tooltip class which relies on doing something based on the UIElement that the mouse is over. Simply put, it hooks into the owning Window's PreviewMouseMove event and updates a "current Item". This

问题 I have problem with Korean Windows IME. I am designing a virtual (screen/software) keyboard for a piece of embedded software. I rely on Windows IME and it seemed to work fine for Japanese and Chinese languages. It also works perfectly with Korean if I am using a physical keyboard. But when I click a virtual keyboard button, the mouse events seem to interfere with IME and basically just cancel the composition. WM_IME_ENDCOMPOSITION message fires every time the mouse button is clicked. As a

问题 I want to get mouse position relative to screen coordinates. I am using the following code to do that. window.PointToScreen(Mouse.GetPosition(window)); It is working as expected. But my MouseMove event not firing outside the MainWindow. That is if I move my mouse over desktop with my window restored. Any ideas appreciated. 回答1: Use the CaptureMouse() method. For your example above, you could add: window.CaptureMouse(); in your code-behind inside the MouseDown event handler. You then need to

问题 Hello if I have some code like the following for the matter.js library : // create two boxes and a ground var boxA = Bodies.rectangle(400, 200, 80, 80); var boxB = Bodies.rectangle(450, 50, 80, 80); var ground = Bodies.rectangle(400, 610, 810, 60, { isStatic: true }); // add all of the bodies to the world World.add(engine.world, [boxA, boxB, ground]); Events.on(engine, 'tick', function(event) { if(mouseConstraint.mouse.button == 0){ alert("what is clicked?"); } }); Is there a way I can tell

问题 I'm writing a game for OUYA and Android and I'm using the trackpad on the OUYA controller. When ever you touch it a mouse pointer comes up and I can't find a way to hide it. I image this would be a problem for games on an Android netbook as well. Has anyone found a way to interact with the cursor instead of just listening for events? 回答1: This won't hide the mouse, but it will at least help prevent touch events from interfering with your joystick processing code -- not a proper solution I

问题 I've written a home-brew view_port class for a 2D strategy game. The panning (with arrow keys) and zooming (with mouse wheel) work fine, but I'd like the view to also home towards wherever the cursor is placed, as in Google Maps or Supreme Commander I'll spare you the specifics of how the zoom is implemented and even what language I'm using: this is all irrelevant. What's important is the zoom function, which modifies the rectangle structure (x,y,w,h) that represents the view. So far the code

问题 so I saw this on a random website from awwwards ( https://mallardandclaret.com/about/ ) I was wondering how can this be achieved. I've got this codepen: https://codepen.io/anon/pen/REBYdM#anon-signup and well, I tried using mix-blend-mode:multiply; but it's obviously not the same. I'm looking for a bigger difference in terms of colors ( maybe inverse them, or something ). Can anyone help me with this one? Much appreciated :). edit: so they are using this one: mix-blend-mode: exclusion; but in

问题 I want to to allow user to select a region with mouse, like you can do mostly everywhere.For more clarity just imagine your desktop on Windows, and click the left button and move the mouse with the button holed. The following will happen: you will see how the region that your mouse passed is highlighted with a rectangle. That is exactly what I want to do. p.s. Mathematically I know how to calculate, and also know how to draw the rectangle by being able to track mouse position when it is