mouseevent

问题 I want identify all mouse click event in PreTranslateMessage, but when I use WM_LBUTTONDOWN than WM_LBUTTONDBLCLK portion never called. Please tell me how can I identify all events separately. 回答1: This code will get the mouse click events in PreTranslateMessage BOOL CSampleDlg::PreTranslateMessage(MSG* pMsg) { if(pMsg->message == WM_LBUTTONDOWN) { //add ur customized code here... return false; } return CDHtmlDialog::preTranslateMessage(pMsg); } 来源： https://stackoverflow.com/questions/7411415

问题 As part of a diagram, I am drawing a few overlapping Shapes, each with Opacity=0.5 , like here: <Grid> <Rectangle Fill="Blue" Opacity="0.5" MouseEnter="Rectangle_MouseEnter" /> <Rectangle Fill="Red" Opacity="0.5" /> </Grid> private void Rectangle_MouseEnter(object sender, MouseEventArgs e) { MessageBox.Show("Entered"); } When the user enters the shape with the mouse, some additional information should be displayed, but the event handler never gets called. Is there a way to get MouseEnter

问题 I am trying to detect a doubleclick on a random cell of a tableview. The detection of the doubleclick is not a problem but rather which cell has been doubleclicked. table.addEventFilter(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() { @Override public void handle(MouseEvent event) { if (event.getClickCount() > 1) { System.out.println("double clicked!"); TableCell c = (TableCell) event.getSource(); System.out.println("Cell text: " + c.getText()); } } }); This is how I'm building my

问题 I want to simulate a mousePressed event in Java, I found out that I can use the Robot class for this, and it works, but only in Windows and not in Mac OS X. Does anyone know of an alternative way to simulate a mousePressed event? This is the code I used: Robot robot = new Robot(); robot.mousePress(InputEvent.BUTTON1_MASK); 回答1: If you want to simulate the click action on a JButton you can invoke the doClick method, take a look here. Otherwise, maybe this similar question can help you. Hope

问题 I have a trackbar in my WinForms program which by moving it a huge and time consuming method will be refreshed. Have a look at this code: trackBar_ValueChanged(object sender, EventArgs e) { this.RefreshData(); } This track bar has 20 steps. If user grab the trackbar's slider and pull it from 20 to 0 in my case, 'RefreshData' will be executed 20 times although it shows correct data when it ends the process that is 'RefreshData' with value 0, I want to do something like it only calls the

问题 How can I determine TreeViewItem clicked in PreviewMouseDown event? 回答1: The following seems to work: private void myTreeView_PreviewMouseDown(object sender, MouseButtonEventArgs e) { TreeViewItem item = GetTreeViewItemClicked((FrameworkElement)e.OriginalSource, myTreeView); ... } private TreeViewItem GetTreeViewItemClicked(FrameworkElement sender, TreeView treeView) { Point p = ((sender as FrameworkElement)).TranslatePoint(new Point(0, 0), treeView); DependencyObject obj = treeView

问题 I want to have a JPanel called mainPanel and add several components on it; Also I defined a mouseAdapter and added to my mainPanel that overrides mouseEntered and mouseExited to for example change background color of mainPanel when mouse entered it. But when mouse entered to mainPanel and entered to components I added on it (for example labels) mouseExited event is called; But I don't want this as mouse is in area of mainPanel ; I want it be called just when mouse exited mainPanel area; and

问题 This may be a stupid question, but I have to ask! I have the following code snippets that are supposed to run their corresponding methods when the user interacts with objects. For some reason, "foo" is never printed, but "bar" is. myJSpinner1.addMouseListener(new java.awt.event.MouseAdapter() { public void mouseEntered(java.awt.event.MouseEvent evt) { System.out.println("foo"); //"foo" is not printed } }); myJSpinner2.addChangeListener(new java.awt.event.ChangeListener() { public void

问题 I'm working with the MVVM pattern in WPF (a bit new to both). I'd like to set up an InputBinding on a CheckBox that corresponds to a Control + Click event, but do not see a Modifiers property on the MouseBinding element. This is what I'd like to achieve (fictitious code, obviously- Modifiers doesn't exist): <CheckBox> <CheckBox.InputBindings> <MouseBinding MouseAction="LeftClick" Command="{Binding CheckboxControlClickCommand}" Modifiers="Control" /> </CheckBox.InputBindings> </CheckBox> Any

问题 In Python using wxPython, how can I set the transparency and size of a window based on the proximity of the mouse relative to the application's window, or frame? Eg. similar to a hyperbolic zoom, or The Dock in MAC OS X? I am trying to achieve this effect with a png with transparency and a shaped window. Any libraries or code snippets that do this would be great too. Thanks. 回答1: Here's code to do it. Basically uses the approach mentioned by Infinity77. Tested on Windows. Works nicely! import