SetForegroundWindow Win32 API not always works on Windows 7

SetForegroundWindows has some remarks usage, which could be found here:

http://msdn.microsoft.com/en-us/library/windows/desktop/ms633539%28v=vs.85%29.aspx

At least one of the following must be true:

• The process is the foreground process.
• The process was started by the foreground process.
• The process received the last input event.
• There is no foreground process.
• The foreground process is being debugged.
• The foreground is not locked.
• The foreground lock time-out has expired (see SPI_GETFOREGROUNDLOCKTIMEOUT in SystemParametersInfo).
• No menus are active.

Alternative solution is to use  AttachedThreadInputAction pattern:

http://www.shloemi.com/2012/09/solved-setforegroundwindow-win32-api-not-always-works

Other "classic" approaches using Mutexes and EventWaitHandle:

http://www.codeproject.com/Articles/32908/C-Single-Instance-App-With-the-Ability-To-Restore

http://www.codeproject.com/Articles/96359/Mutex-Process-Identifier

http://www.codeproject.com/Tips/702830/Single-Instance-Form-Application-in-Csharp

VB style approach:

using System;
using System.Windows.Forms;
using Microsoft.VisualBasic.ApplicationServices;    // Add reference to Microsoft.VisualBasic

namespace WindowsFormsApplication1 {
    class Program : WindowsFormsApplicationBase {
        public Program() {
            this.EnableVisualStyles = true;
            this.IsSingleInstance = true;
            this.MainForm = new Form1();
        }
        protected override void OnStartupNextInstance(StartupNextInstanceEventArgs e) {
            e.BringToForeground = true;
        }
        [STAThread]
        public static void Main(string[] args) {
            new Program().Run(args);
        }
    }
}

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