Multi tool use

How to emulate keypress combination without activating Window using Win32 API

I would like to emulate Ctrl+Alt+L keypress combination (which a hidden process running in memory is listening for). So... I can't activate a GUI window that's not there (using traditional SendKeys).

SendKeys

I can't seem to find a single working script anywhere that can help me do this. The closest I found was the Keypress script below which seems to be limited to only a single character press (no key combinations).

https://www.reddit.com/r/PowerShell/comments/3qk9mc/keyboard_keypress_script/

1 Answer
1

This is a demonstration with CTRL+ESCAPE. Easy to modify for your needs.
A list of keyboard codes is here:
http://www.kbdedit.com/manual/low_level_vk_list.html

But be careful while testing. If a key isn't properly released, strange effects can be happen!

$keyboardEvent = Add-Type –memberDefinition @”
[DllImport("user32.dll")]
public static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, UIntPtr dwExtraInfo);
“@ -name “keyboardEvent” -namespace Win32Functions –passThru

$key_down = 0x00
$key_up = 0x02

$vk_lcontrol = 0xA2
$vk_alt = 0x12
$vk_l = 0x4C
$vk_escape = 0x1B
$vk_windows = 0x5B

# Press CTRL+ESC => Same as Windows Key
[Win32Functions.keyboardEvent]::keybd_event([byte]$vk_lcontrol, [byte]0, [UInt32]$key_down, [UIntPtr]::Zero)
[Win32Functions.keyboardEvent]::keybd_event([byte]$vk_escape, [byte]0, [UInt32]$key_down, [UIntPtr]::Zero)
Start-Sleep 1

# Release CTRL+ESC
[Win32Functions.keyboardEvent]::keybd_event([byte]$vk_lcontrol, [byte]0, [UInt32]$key_up, [UIntPtr]::Zero)
[Win32Functions.keyboardEvent]::keybd_event([byte]$vk_escape, [byte]0, [UInt32]$key_up, [UIntPtr]::Zero)
Start-Sleep 1


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