相关疑难解决方法(0)

当一个COM对象在STA线程上实例化时,该线程通常必须实现一个消息泵,以便为来回调用其他线程(见这里).

可以手动泵送消息,或者依赖于某些(但不是全部)线程阻塞操作在等待时自动泵送COM相关消息的事实.文档通常无助于决定哪个是哪个(参见相关问题).

如何确定线程阻塞操作是否会在STA上泵送COM消息？

到目前为止的部分清单:

阻断其业务做泵*:

• Thread.Join
• WaitHandle.WaitOne/ WaitAny/WaitAll(WaitAll不能从一个STA线程虽然称为)
• GC.WaitForPendingFinalizers
• Monitor.Enter(因此lock) - 在某些条件下
• ReaderWriterLock
• BlockingCollection

阻止不泵送的操作:

• Thread.Sleep
• Console.ReadKey (在某处读)

*注意Noseratio的答案说,即使是操作泵,也是为非常有限的未公开的COM特定消息集.

这是我正在使用的功能:

    private void Convert2Morse(object obj)
    {
        TextConverted = am.Convert(NormalText);

        foreach (char symbol in TextConverted)
        {
            int milliseconds = 0;

            switch (symbol)
            {
                case '·': milliseconds = 500; break;
                case '—': milliseconds = 1000; break;
                case ' ': continue;
                default: throw new Exception("Something is wrong");
            }

            System.Media.SystemSounds.Beep.Play();
            System.Threading.Thread.Sleep(milliseconds);
        }
    }

TextConverted属性显示在textBox中,但刷新直到完成子例程.

有没有办法可以显示刷新UI？

我有一个窗口:

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApplication1"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
  <StackPanel Orientation="Horizontal" Background="{Binding BackgroundColor}">
    <Button Content="Button1" Click="ButtonBase_OnClick"/>
  </StackPanel>
</Window>

而这个CodeBehind窗口:

using System;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using WpfApplication1.Annotations;

namespace WpfApplication1
{
    /// <summary>
    ///     Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        private Brush _backgroundColor;

        public MainWindow()
        {
            InitializeComponent();
            DataContext = this;
            Background = Brushes.Orange;
        }

        public Brush BackgroundColor
        {
            get { …