eventhandler

I'm doing some work with a radio microcontroller (BLE). The mechanism supported in .NET's GenericAttributeProfile namespace, is to use an EventHandler whenever new data comes in (notifications). A problem I'm currently seeing is that, despite my data being sent in order from the radio hardware, the data does not necessarily get dealt with in that order. I'm guessing this is due to the asynchronous manner in which the EventHandler is invoked (please correct me if I'm wrong). Every time a new piece of data comes in, the event handler is invoked, which then reads the data, and writes to console

I have a bunch of TextBoxes in my WinForm UserControl. Each of those text boxes has few event handlers such as On_Enter - show ListBox with suggestions, On_KeyUP - if Keys.Code == Keys.Enter - SelectNextControl(). When I place that control in a Form, none of those events fire up. How to expose all those events to the containing form? How to make UserControl's events fire up event handlers of that UserControl? Ben So, if I understand correct, I think there are 2 ways you can proceed: Approach 1 In the UserControl, set the Modifiers property of each textbox (or the ones you are interested in) to

So my goal is to have 5 boxes and every time one box is clicked a new box appears. The code I wrote for that is this: window.onload = function(){ var boxList = document.getElementsByClassName("box"); for(i = 0; i< boxList.length;i++){ boxList[i].onclick = clickHandler; } } function clickHandler(eo){ if(eo.target.style.backgroundColor != "black") { eo.target.style.backgroundColor = "black"; var box = document.createElement("div"); box.setAttribute("class","box"); box.setAttribute("id",document.getElementsByClassName("box").length++); document.getElementById("Master").appendChild(box); } else eo

Made this example: https://jsfiddle.net/d8ak0edq/2/ document.getElementById('outer').oncontextmenu = function() { return false; }; outer = document.getElementById('outer'); outer.addEventListener('mousedown', foo); function foo(evt) { if (evt.which === 1) { evt.target.style.backgroundColor = 'red'; } else if (evt.which === 3) { evt.target.style.backgroundColor = 'blue'; } } /* $outer = $('#outer'); $outer.on('mousedown', 'div', foo); function foo(evt) { if (evt.which === 1) { $(this).css('background-color', 'red'); } else if (evt.which === 3) { $(this).css('background-color', 'blue'); } } */

I created a generic USB HID comms driver capable of monitoring USB events and sending/receiving data packets to and from devices. I've been using it successfully since my WinForms days as much of the code was culled from MSDN and implemented very similarly to the way suggested here . My question is: The examples I see continue to rely on what seem to be the old "Windows Messaging" architecture, i.e. System.Runtime.InteropServices , WM_xxxxxxx type messages, registering/handling these in a purely C# WPF app with HwndHandler , overriding WndProc , etc. I was wondering is there not a way to

I'm trying to create an element by my code and associate a style for it, also associating its EventSetter, the style works perfectly but when I try to run the function it does not work. App.xaml <Application x:Class="Learning.App" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:Learning"> <Application.Resources> <Style TargetType="Label" x:Key="LabelTituloEstiloPadrao"> <Setter Property="Background" Value="White" /> <Setter Property="HorizontalAlignment" Value="Left" /> <Setter Property="Margin"

I'm trying to do a relatively simple javascript program/page, just 3 sliders RGB to affect the color of a square and circle. It works GREAT when I have the event listeners 'inline' with the input elements: i.e., onchange="someFunction(x,y)" However, when I move the event listeners to be in the javascript, and use addEventListener , it only works ONCE when the page loads, and then never again...almost as if a removeEventListener has been called, but I haven't done that. Yes, I made sure that all elements are loaded on the page before I call the javascript. I have altered this code to just give