Restore a minimized window of another application

Question

I\'m adding some code to an app that will launch another app if it isn\'t already running, or if it is, bring it to the front. This requires a small amount of interop/WinAPI

Answer 1

I know its too late, still my working code is as follows so that someone later can get quick help :)

using System.Runtime.InteropServices;
using System.Diagnostics;

[DllImport("user32.dll")]
static extern bool SetForegroundWindow(IntPtr hWnd);

[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

[DllImport("user32.dll", EntryPoint = "FindWindow")]
public static extern IntPtr FindWindowByCaption(IntPtr ZeroOnly, string lpWindowName);

private static void ActivateApp(string processName)
{
    Process[] p = Process.GetProcessesByName(processName);

    if (p.Length > 0)
    {
        IntPtr handle = FindWindowByCaption(IntPtr.Zero, p[0].ProcessName);
        ShowWindow(handle, 9); // SW_RESTORE = 9,
        SetForegroundWindow(handle);
    }
} 

ActivateApp(YOUR_APP_NAME);

Actually, FindWindowByCaption is the key here, this method collects the window handle correctly when app is running silently in the system tray and also when app is minimized.