event-handling

问题 I am trying to resize a borderless form with a StatusStrip (I'm using a tool strip for many reasons). I have successfully moved a form with a MenuStrip, but never resized, so I do have a little understanding on sending messages and EventHandling. However, the StatusStrip doesn't move when clicked. Below is what I have so far. Custom StatusStrip Class: public class PassThroughStatusStrip : StatusStrip{ protected override void WndProc(ref Message m){ const int WM_NCHITTEST = 0x0084; const int

问题 I am using picker in my Tiatnium Application. Picker data is loading from json response.I first store API data in Temporary array and then adding data to picker. The problem is when I click picker elements for the first time the change event doesn't get fired. After first click is done then if I click on any element it works as expected. Here is the small code snippet of it for (var i = sorted.length - 1; i >= 0; i--) { pickerData[i] = Ti.UI.createPickerRow({ title : sorted[i], }); Ti.API

问题 What I want I want to fire ItemCommand event when some one click on repeater. Issue The ItemCommand is not fired. Code FrontEnd Code <asp:Repeater ID="rptthumbnail" AutoCallback="true" runat="server" Visible="true"> <ItemTemplate> <td style="height:81px;width:51px"> <asp:ImageButton ID="imgThumbnail" style="height:80px;width:50px" runat="server" /> </td> </ItemTemplate> </asp:Repeater> Page_Load Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If

问题 I have the following code: public void LoadPage() { LayoutPanel.Controls.Clear(); ContentObjects = LoadContentObjects(); foreach (string img in ContentObjects) { thumbnail = new ctrlThumbnailControl(img); LayoutPanel.Controls.Add(thumbnail); thumbnail.ThumbnailSelected += Thumbnail_ThumbnailSelected; } } private void Thumbnail_ThumbnailSelected(string PathToMedia) { lblFileName.Text = PathToMedia; } I create a thumbnail control for each image loaded (limited to 150 per page). The thumbnail

问题 I want to set an event handler only if this is not set: If GetHandlers(MyWindow.Closed, AddressOf MyWindow_Closed).Length = 0 Then AddHandler MyWindow.Closed, AddressOf MyWindow_Closed EndIf 回答1: You can't really query the current value of the event's delegate, except in the code that defines the event. What is your intent here? Normally you shouldn't be too concerned (necessarily) with other subscribers? There are ways of hacking past the encapsulation to find the current value, but they are

问题 Scenario I am building courier service system using Microservices. I am not sure of few things and here is my Scenario Booking API - This is where customer Place order Payment API - This is where we process the payment against booking Notification API - There service is responsible for sending the notification after everything is completed. The system is using event-driven Architecture. When customer places booking order , i commit local transaction in booking API and publish event. Payment

问题 I have an application in WinForms where I have many controls. These controls represents settings of application and user can save this settings by clicking on a button. I am trying to resolve a problem with NumericUpDown (I will call it Num) control: Lets say that Num has these properties: Minimum: 10 Maximum: 60 Step: 1 If a user want to change value, there are two ways how to do that: clicking on arrows (right side of the Num) or manually typing value directly to Num. First way is OK but

问题 How do I prevent JavaScript from handling two events at once? I have an event handler declared such as document.addEventListener('keydown',function(e) {},false) in this case, I do not want the handler to handle any events until it has finished with the current one. 回答1: Javascript is single threaded so the current event processing will finish before the next event is triggered. You do not have to do anything to guarantee that only one event is processed at a time. You can learn more about

问题 is there any event to be handled between the dom:loaded and load using Prototype javascript framework? I've implemented a preloader using prototype which is looking like this: Event.observe(window,"load",preload); function preload(){ if($('wrapper')) $('wrapper').setStyle({"display":"block"}); if($('loading')) setTimeout('$("loading").fade({duration: 5.0});',4000); } then I've an another handler using for column height fixatioan which is: Event.observe(window,"load",function(){ var

问题 I have a DGV in VB.Net 2008 connected to an Access DB table. The DGV is not Read Only, but is full of read-only columns except for one, which contains a combo box. The combo box allows the user to select an outcome for that particular row, and then the program copies in a pre calculated value into the "Profit" column depending upon the item selected in the combobox. Then the user hits the Save button and the DB updates (currently via SQL methods in the XSD). Easy enough so far. Here is the