Hide MS Teams sharing bar

teamshider.ps1

Add-Type -TypeDefinition @"
using System;
using System.Runtime.InteropServices;

public class Win32 {
    public const int SW_HIDE = 0;
    public const int SW_SHOW = 5;
    
    public const int AFFINITY_NONE = 0x00;
    public const int AFFINITY_MONITOR = 0x01;
    public const int AFFINITY_EXCLUDE_FROM_CAPTURE = 0x11;

    [DllImport("user32.dll")]
    public static extern bool EnumWindows(EnumWindowsProc enumProc, IntPtr lParam);
    [DllImport("user32.dll")]
    public static extern int GetWindowText(IntPtr hWnd, System.Text.StringBuilder lpString, int nMaxCount);
    [DllImport("user32.dll")]
    public static extern int GetClassName(IntPtr hWnd, System.Text.StringBuilder lpClassName, int nMaxCount);
    [DllImport("user32.dll")]
    public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
    [DllImport("user32.dll")]
    public static extern bool GetWindowDisplayAffinity(IntPtr hWnd, ref int pdwAffinity);

    public delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);
}
"@ -Language CSharp

function EnumWindows {
    $toHide = @{}
    $enumWindowsProc = [Win32+EnumWindowsProc] {
        param($hwnd, $lParam)

        $className = New-Object System.Text.StringBuilder 256
        [Win32]::GetClassName($hwnd, $className, $className.Capacity) | Out-Null

        $windowText = New-Object System.Text.StringBuilder 256
        [Win32]::GetWindowText($hwnd, $windowText, $windowText.Capacity) | Out-Null

        $affinity = 0
        [Win32]::GetWindowDisplayAffinity($hwnd, [ref]$affinity) | Out-Null
        if ($affinity -ne [Win32]::AFFINITY_EXCLUDE_FROM_CAPTURE) {
            return $true
        }

        $windowText = $windowText.ToString().Split("|")[0].Trim()
        $toHide[$hwnd] = @{
            'windowText' = $windowText
            'className' = $className
            'affinity' = $affinity
        }
        return $true
    }
    [Win32]::EnumWindows($enumWindowsProc, [IntPtr]::Zero) | Out-Null
    return $toHide
}

function HideWindows {
    $toHide = EnumWindows
    $targetWin = @("Sharing control bar", "Bildschirmfreigabe-Symbolleiste", "Freigabesteuerungsleiste")

    foreach ($hwnd in $toHide.Keys) {
        "Checking '$($toHide[$hwnd]['windowText'])'"
        if ($targetWin -contains $toHide[$hwnd]['windowText']) {
            "Hiding $($toHide[$hwnd]['windowText'])"
            [Win32]::ShowWindow($hwnd, [Win32]::SW_HIDE) | Out-Null
        }
    }
}
HideWindows