event-handling

Design Question – Polymorphic Event Handling I’m currently trying to reduce the number of Event Handles in my current project. We have multiple systems that send data over USB. I currently have a routine to read in the messages and parse the initial header details to determine which system the message came from. The headers are a little different, so the EventArgs I created are not the same. Then I notify all “observers” of the change. So what I have right now is the following: public enum Sub1Enums : byte { ID1 = 0x01, ID2 = 0x02 } public enum Sub2Enums : ushort { ID1 = 0xFFFE, ID2 = 0xFFFF }

For example I want to execute something when user clicks on a button. Which do I use? The documentation didn't appear to make it very clear UPDATE A quick test shows that Widget Selected is triggered but not Default Selected. In TasksView.main() TasksView view = new TasksView(shell, SWT.None); TasksController controller = new TasksController(view); In TasksController public class TasksController extends ControllerAbstract { protected TasksView view; public TasksController(TasksView view) { this.view = view; view.addTaskListener(new AddTaskListener()); } protected class AddTaskListener

I've seen this sort of code some places: public event SomeEventHandler SomeEvent = (s, e) => { }; Is that a recommended way of doing things? What does it solve, and does it have any noteworthy side effects? Will I still have to do null checks? Or is that exactly what I don't have to do any more? Will garbage collection still work as it should? For example: private PropertyChangedEventHandler propertyChanged; private readonly object propertyChangedLock = new object(); public event PropertyChangedEventHandler PropertyChanged { add { lock (propertyChangedLock) propertyChanged += value; } remove {

I have a problem with attaching an event handler to an ItemAdd event of a public folder. The problem is the event handler stops being called after a few successful calls. The code is trivial. I have a ThisAddIn class which creates an object which in turn attaches a function to the ItemAdd event in its constructor. The function just pops up a messagebox. Please point me in the right direction. I simply don't understand where to look for the error. Thank you in advance, Anatoly Here is the test code I try to run: public partial class ThisAddIn { internal static Outlook.Folder posts_folder = null

I need to ensure that a page stays the way my script describes even after the DOM changes; my script has to handle these changes to the DOM such that my script doesn't only handle on the initial state. Is there an event that I can use to handle these DOM changes? Taking your question in the strictest sense, something like this: //--- Narrow the container down AMAP. $("YOUR SELECTOR").bind ("DOMSubtreeModified", HandleDOM_ChangeWithDelay); var zGbl_DOM_ChangeTimer = null; function HandleDOM_ChangeWithDelay (zEvent) { if (typeof zGbl_DOM_ChangeTimer == "number") { clearTimeout (zGbl_DOM

I have a VB6 application where I'd like to have a consistent behavior among its controls application-wide. One of the behaviors, for example, would be highlighting a text box when it gains focus and removing the highlight when it loses focus. I'd like this to happen on every form. What I'm trying to do is have one sub procedure that can be called by all forms when they load that will make this behavior happen. That way, I don't have to manually code for each individual text box to make it highlight. I've tried getting VB6 to attach an event handler to a control at runtime but it just barks at

I want to open a window after clicking the fshare My render() return is like this <Modal.Footer> <img src="/static/img/fshare.png" onClick={this.fbShare} /> <Button onClick={this.hide}>Close</Button> </Modal.Footer> I am creating a function fbShare: function(event) { }, And I want to add the following code inside the function that basically opens a new window to share in Facebook: window.open('https://www.facebook.com/dialog/feed?app_id=xxxxxxxxe='sharer', 'toolbar=0,status=0,width=548,height=325');" target="_parent" href="javascript: void(0)"> But i am confused with how to handle this event.