Is it possible to set powershell opacity through commandline

Question

New to powershell & .NET.

It is possible to configure powershell console colors.

However how can i set the opacity of the window. It seems that the InternalHostRawUserInterface class's property takes an enum ConsoleColor.

Is it possible to set the windows transparency?

Answer 1

As Joey mentioned in his comment, you'll have to talk to a low-level API to modify the transparency of the window.

Using this example, we can adapt it to PowerShell like so:

function Set-ConsoleOpacity
{
    param(
        [ValidateRange(10,100)]
        [int]$Opacity
    )

    # Check if pinvoke type already exists, if not import the relevant functions
    try {
        $Win32Type = [Win32.WindowLayer]
    } catch {
        $Win32Type = Add-Type -MemberDefinition @'
            [DllImport("user32.dll")]
            public static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

            [DllImport("user32.dll")]
            public static extern int GetWindowLong(IntPtr hWnd, int nIndex);

            [DllImport("user32.dll")]
            public static extern bool SetLayeredWindowAttributes(IntPtr hwnd, uint crKey, byte bAlpha, uint dwFlags);
'@ -Name WindowLayer -Namespace Win32 -PassThru
    }

    # Calculate opacity value (0-255)
    $OpacityValue = [int]($Opacity * 2.56) - 1

    # Grab the host windows handle
    $ThisProcess = Get-Process -Id $PID
    $WindowHandle = $ThisProcess.MainWindowHandle

    # "Constants"
    $GwlExStyle  = -20;
    $WsExLayered = 0x80000;
    $LwaAlpha    = 0x2;

    if($Win32Type::GetWindowLong($WindowHandle,-20) -band $WsExLayered -ne $WsExLayered){
        # If Window isn't already marked "Layered", make it so
        [void]$Win32Type::SetWindowLong($WindowHandle,$GwlExStyle,$Win32Type::GetWindowLong($WindowHandle,$GwlExStyle) -bxor $WsExLayered)
    }

    # Set transparency
    [void]$Win32Type::SetLayeredWindowAttributes($WindowHandle,0,$OpacityValue,$LwaAlpha)
}

And then use it like:

Set-ConsoleOpacity -Opacity 50

Which will then set the opacity of the window to 50%

Answer 2

hold down control and shift, then move scroll wheel. This might be useless answer, I'm not sure if this is a permanent setting