A simple PowerShell script to send keys to an application windows

Send a sequence of keys to an application window

This Send-Keys script send a sequence of keys to an application window.
To have more information about the key representation look at http://msdn.microsoft.com/en-us/library/System.Windows.Forms.SendKeys(v=vs.100).aspx
(C)2013 Massimo A. Santin - Use it at your own risk.

.PARAMETER ApplicationTitle
The title of the application window

The sequence of keys to send

An optional number of seconds to wait after the sending of the keys

Send-Keys "foobar - Notepad" "Hello world"

Send the sequence of keys "Hello world" to the application titled "foobar - Notepad".

Send-Keys "foobar - Notepad" "Hello world" -WaitTime 5

Send the sequence of keys "Hello world" to the application titled "foobar - Notepad" 
and wait 5 seconds.

    New-Item foobar.txt -ItemType File; notepad foobar.txt ; Send-Keys "foobar - Notepad" "Hello world{ENTER}Ciao mondo{ENTER}" -WaitTime 1; Send-Keys "foobar - Notepad" "^s"

This command sequence creates a new text file called foobar.txt, opens the file using a notepad,
writes some text and saves the file using notepad.


param (


    [int] $WaitTime

# load assembly cotaining class System.Windows.Forms.SendKeys
[void] [Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
#Add-Type -AssemblyName System.Windows.Forms

# add a C# class to access the WIN32 API SetForegroundWindow
Add-Type @"
    using System;
    using System.Runtime.InteropServices;
    public class StartActivateProgramClass {
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool SetForegroundWindow(IntPtr hWnd);

# get the applications with the specified title
$p = Get-Process | Where-Object { $_.MainWindowTitle -eq $ApplicationTitle }
if ($p) 
    # get the window handle of the first application
    $h = $p[0].MainWindowHandle
    # set the application to foreground
    [void] [StartActivateProgramClass]::SetForegroundWindow($h)

    # send the keys sequence
    # more info on MSDN at http://msdn.microsoft.com/en-us/library/System.Windows.Forms.SendKeys(v=vs.100).aspx
    if ($WaitTime) 
        Start-Sleep -Seconds $WaitTime

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: