event-handling

问题 I've got a FlowDocument which has some elements like so: <InlineUIContainer> <Button Click="Button_Click" Tag="123456789890"> <Image Source="Images\Image1.png" /> </Button> </InlineUIContainer> This is stored off in a .xaml file and gets loaded at some point by doing something like so: flowDocument = XamlReader.Load(xamlFile, parserContext) as FlowDocument; flowDocumentReader.Document = flowDocument; The loading fails with the following error: XamlParseException - Failed to create a 'Click'

问题 How can I generate event MouseWheelEvent for some Object ? 回答1: MouseWheelEvent mwe = new MouseWheelEvent(...); component.dispatchEvent( mwe ); 回答2: You can use Robot class.Take a look at Mouse Wheel method 回答3: Well, I don't know about generating a scroll Event from an object, but you should take a look at the Robot class. It allows you to actually cause the mouse wheel to scroll. That may be helpful. Specifically, look at the mouseWheel(int) method. 回答4: Do you want to actually fire a

问题 I have loop that is supposed to try to connect to each IP from range: for(...){ socket->connectToHost(addres,port); do stuff.... if(socket->waitForConnected(2000)) { do stuff... if(socket->waitForReadyRead(1000)) { do stuff... } else do stuff... } do stuff ...... } During connection atempts UI freezes, because there is no event processing in the meantime. I tried to add QCoreApplication::processEvents(); inside the loop, however it still freezes for long time during waitForConnected, and I

问题 Long story short Please see the demo here. I have several div.story-in-myworks inside each div.story-in-myworks , there is a div.pageimage-div-overlay that controls the overlay over each div.story-in-myworks . Inside each div.pageimage-div-overlay there is a a.btn-storysetting responsible for hiding and showing a div.storysettings_talkbubble_left . both a.btn-storysetting and div.storysettings_talkbubble_left are child elements of div.pageimage-div-overlay . Here is a snippet: <div class="img

问题 I'm having an issue where my main form isn't updating even though I see the event fire off. Let me explain the situation and share some of my code which I'm sure will be horrible since I'm an amateur. I created a class to take in the settings for running a process in the background. I add some custom events in that class so I could use that in my form instead of a timer. I put a break on the two subs for that handle those events and I see them get kicked off as soon as an install starts. I

问题 I am trying to utilize Widget.addHandler() . However, the handler never gets called. Below is my sample code. What do I need to change to fix this? My Handler Implementation: public class CustomMouseMoveHandler extends GwtEvent.Type<MouseMoveHandler> implements MouseMoveHandler { @Override public void onMouseMove(MouseMoveEvent event) { System.out.println("----> onMouseMove."); } } My EntryPoint.OnModuleLoad() : ContentPanel cp = new ContentPanel(); cp.setHeaderVisible(false); cp.setHeight

问题 I have the following piece of code import java.awt.*; import java.awt.event.*; import java.lang.reflect.*; import javax.swing.*; class QueueTest { static int i=0; public static void main(String[] args) throws InterruptedException, InvocationTargetException { EventQueue eventQueue = Toolkit.getDefaultToolkit().getSystemEventQueue(); eventQueue.push(new MyEventQueue()); Frame f=new Frame(); f.setSize(400,400); //f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.setLocation(150,150); f

问题 I'm trying to remove event listeners from elements after they've been clicked on and although I seem to have a working solution, it's not ideal and I'm not sure why it works differently to the broken code. Although I realise there are simpler ways of doing this, this is taken from a JS class I'm working on so need to retain some of the structure. This relates to a previous post I made which was answered correctly (but didn't work when I expanded the example) - Removing event listeners with

问题 I'm calling a function and adding a listener for when the function returns some data. when the data is returned i need to call another function and so on. Is there an easy way to 'chain' these functions together so that the first one fires - waits for the listener then fires the second one creating a listener for that and so on until the last one calls a separate function that is defined at the start. It would i suppose work on the same lines as the bulk loader scripts. I'm envisaging the

问题 //FormLoad dgvTable.CellClick += new DataGridViewCellEventHandler(getValues); //somwhere in FormClass private void getValues(object sender, DataGridViewCellEventArgs e) { int id = int.Parse(dgvTable.Rows[dgvTable.CurrentRow.Index].Cells[0].Value.ToString()); var values = from c in v.db.TotalDoc where c.TotalID == id select c.TotalAmount; dgvValues.DataSource = values; } i have two datagridviews (dgv) on the form. I choose dataID from first dgv (dgvTable) and get all values of these id in the