[C# WinForm] using uesr32.dll

一些dot.net 跟windows handle survey.
Reference:

• Finding the thread (PID) that belongs to a tab in IE 8 with PowerShell
• C# 指定程序還原與置於前景視窗
• Correct way (in .NET) to switch the focus to another application. SetActiveWindow Reference in C#, VB.NET and VB6 Working with Win32 API in .NET 
• FindWindow Alternative in C# .NET
• User32's SetForegroundWindow() API in C#
• C# Force Form Focus
• C# - Open "Folder Options" dialog programmatically
• C#调用Win32 的API函数--User32.dll tip:有加一些註解，有助了解func的功能
• C#中用WinAPI调用外部程序
• C# Windows API
• [C#.NET][VB.NET] 用 Win32 API 控制 外部應用程式選單
• 限制Windows应用程序多个实例的方法