message

I'm writing a simple winforms app in C#. I create a worker thread and I want the main window to respond to the tread finishing its work--just change some text in a text field, testField.Text = "Ready". I tried events and callbacks, but they all execute in the context of the calling thread and you can't do UI from a worker thread. I know how to do it in C/C++: call PostMessage from the worker thread. I assume I could just call Windows API from C#, but isn't there a more .NET specific solution? Matt Davis In the event callback from the completed thread, use the InvokeRequired pattern, as

I am currently developing a simple PHP application where users can send messages to each other. Messages are stored in a SQL database. I'd like to put a count of unread messages in the menu on every page, so that a user can see quickly if they have new messages without checking the inbox periodically. While this may be an easy problem to solve, I don't know what the best method would be, performance-wise : Do a plain SQL COUNT() of unread messages on every page load (instantly notified of changes, but it may impact performance badly ?) Do the same thing, but cache the result for X minutes (we

前言 前段时间部门搭建新系统，需要出异常后统一接口的返回格式，于是用到了Spring的注解@RestControllerAdvice。现在把此注解的用法总结一下。 用法 首先定义返回对象ResponseDto 1 package com.staff.points.common; 2 3 import lombok.Data; 4 5 import java.io.Serializable; 6 7 @Data 8 public class ResponseDto<T> implements Serializable { 9 private static final long serialVersionUID = -284719732991678911L; 10 11 private String code; 12 13 private String message; 14 15 private T data; 16 17 public static <T> ResponseDto<T> assemblingSuccessResponse(T data) { 18 ResponseDto<T> responseDto = new ResponseDto<>(); 19 responseDto.setCode(ResponseCodeEnum.SUCCESS.getCode());

i created a messaging model where a user can send a private message to another user. however im not sure how to go about notifying the user he/she got a new message. does anyone have a way to go about doing this? or if there was a simple solution? def create @message = current_user.messages.build @message.to_id = params[:message][:to_id] @message.user_id = current_user.id @message.content = params[:message][:content] if @message.save flash[:success ] = "Private Message Sent" end redirect_to user_path(params[:message][:to_id]) end i can tell the sender that a private message was sent, but im

What happens when a window is destroyed while there are still messages pending for it? Consider the following scenario: There are three threads, A, B, and C. Thread C owns a window. Threads A and B use SendMessage to post messages to the window. The message from A arrives first. While C is processing the message from A, it destroys its window using DestroyWindow . What happens to the message from thread B? Does the call by thread B to SendMessage return? How does this work internally? According to MSDN , DestroyWindow "[...], flushes the thread message queue, [...]". I was not sure whether

I am learning JSF and came across this line: <h:messages layout="table"></h:messages> in a sample application ? Am not sure what does this line do? I get no error when removing the line from the code, and am able to run it and get the same output ? sven The h:messages tag renders all messages for the current JSF view which are not covered by a h:message (remark the missing 's' at the end) tag. Messages can be generated explicitly by your backing beans ( FacesContext.addMessage ) or implicitly by JSF. E.g. if you have marked an input value as required and the user submits the form without