move_taskbar.ahk

#singleinstance 

; Move the taskbar to left screen, right side.
; Can’t use it because for some reason, when interacting with the taskbar with the mouse, it goes back to main screen
MoveTaskbar() 
{
	If MonitorGetCount() > 1
	{
		WinExist("ahk_class Shell_TrayWnd")
		SendMessage(0x0231)
		WinMove -54, 0, 54, 1080
		SendMessage(0x0232)
	}
}

; Move the taskbar using mouse, and resize it a bit
MoveTaskbar2()
{
	If MonitorGetCount() > 1
	{
		CoordMode "Mouse", "Screen"
		WinExist("ahk_class Shell_TrayWnd")
		WinGetPos &X, &Y
		MouseClickDrag "Left", X + 20, 1100, -54, 600
		MouseClickDrag "Left", -54, 600, -58, 600
	}
} 

MoveTaskbarCb(wParam, lParam, msg, hwnd)
{
	If MonitorGetCount() > 1
	{
		Sleep 2000
		MoveTaskbar2()
	}
}

OnMessage 0x007E, MoveTaskbarCb

Persistent

https://www.autohotkey.com/docs/v2/misc/SendMessageList.htm