mouseevent

问题 Let's say the user starts to move mouse and stop at somewhere on the browser. How can I determine start and stop point with Javascript/Jquery ? Start point is easy, I can get it with mousemove event but what about stop point ? I can't use mouseenter or mouseleave events because my playground is window or document itself. Thank you. 回答1: using a combination of setTimeout and clearTimeout. If the user doesn't move for x amount of seconds then it means that he stopped. Here I wrote you an

问题 In VB.NET I can add an event listener for clicking inside a form, but I want the program to pick up clicks outside the form, when I am clicking elsewhere. Is this possible? 回答1: You are talking about a global mouse hook, the codeplex project GlobalMouseKeyboardHook is one of the easier ways to accomplish it. 来源： https://stackoverflow.com/questions/19210404/vb-net-event-listener-for-click-outside-a-form

问题 I am making a custom menu. I am applying colors on panels on mouse enter and mouse leave. I have labels on these panels, and the mouse enter and leave events work snappy, but as soon as I hover over the label (on/inside) the panel, the mouse leave event is fired. I know I can just do the same thing for the label mouse enter event, but I am doing some other visual stuff, and I need to have the label mouse events totally disregarded. Any ideas? Thanks in advance. 回答1: I eventually just used the

问题 The next code lets you draw Rectangles in the Form with mouse clics. Why not, or how can be draw over a PictureBox? Public Class Form1 Dim SelectRect As Rectangle = New Rectangle() Dim ps As Point = New Point() Dim pe As Point = New Point() This catch the first click, starting point or corner of the rectangle Private Sub Form1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseDown SelectRect.Width = 0 SelectRect.Height = 0 SelectRect.X = e.X

问题 I am attempting to shoot an arrow on mouse click, however in the direction of the mouse. I've accomplished the shooting part, however I am not able to have it shoot towards the mouse. I've listed my code below and I really appreciate all help! The portion of the code which is relevant to the arrow shooting is: for shot in daggers: index = 0 shotx = math.cos(shot[0])*35 shoty = math.sin(shot[0])*35 shot[1] += shotx shot[1] += shoty if shot[1] < -40 or shot[1] > 900 or shot[1] < -40 or shot[1]>

问题 I am trying to populate a JTextArea from a JList when the user double clicks the item. I am not completely sure how to accomplish this, here is what I have so far. // Create Top Right JPanel and JList String[] listB = { "Some content on the right panel", "More content", "Some more content", "More and more content", "More and more content", "More and more content", "More and more content", "More and more content", "More and more content", "More and more content", "More and more content", "More

问题 I have a panel with multiple picturebox created at runtime. The user will create a rectangle on any picture box and the selected part will be displayed on a preview picturebox. I have successfully done the above using the below code. Question I want to clear the selection rectangle at mouseup event. Used invalidate but not working. From how to clear the graphics(rectangle shape) in picturebox Also, when I scroll the panel the same rectangle(mouse selection) is shown on all picturebox. private

问题 Here, I have two side-by-side panel the first_pnl and second_pnl , the second panel is not visible by default. Initial thoughts of what I need: If my cursor is over the the first one ( MouseEnter ) It's BackColor would change to Black Second panel would be visible If my cursor leaves first one ( MouseLeave ) It's BackColor would change back to Gray Second panel would not be visible Which is simple as: Private Sub PanelMouseEnter(sender As Object, e As EventArgs) _ Handles first_pnl.MouseEnter

问题 I have a mousemove event that takes the position of the cursor and outputs it to two labels (X and Y), the value dynamically changes as I hover around. I have a mousedown event that when clicked, the same values are outputted to a textbox. How can I combine the mousedown and mousemove events so that when I hover AND hold down the mouse button, the textbox value dynamically changes as I move. 回答1: You can interrogate the mouse buttons in your Move event handler, i.e. : void Form1_MouseMove

问题 Is it possible to listen for mouse released event on the component on which it was not pressed? I know that when mouse is released MouseListener.mouseReleased() is invoked on the listeners for that component when mouse press originated even if the cursor is above other component. How to inform a component or its listeners that the mouse was over it and it was released? 回答1: If you add your MouseListener to the container that holds your components of interest, you can find out which component