screenshot

([Reflection.Assembly]::LoadWithPartialName("System.Drawing")) | Out-Null
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
function screenshot($path)
{
    $width = 0;
    $height = 0;
    $workingAreaX = 0;
    $workingAreaY = 0;
    $screen = [System.Windows.Forms.Screen]::AllScreens;
    foreach ($item in $screen)
    {
        if($workingAreaX -gt $item.WorkingArea.X)
        {
            $workingAreaX = $item.WorkingArea.X;
        }
        if($workingAreaY -gt $item.WorkingArea.Y)
        {
            $workingAreaY = $item.WorkingArea.Y;
        }
        $width = $width + $item.Bounds.Width;
        if($item.Bounds.Height -gt $height)
        {
            $height = $item.Bounds.Height;
        }
    }
    $bounds = [Drawing.Rectangle]::FromLTRB($workingAreaX, $workingAreaY, $width, $height);
    $bmp = New-Object Drawing.Bitmap $width, $height;
    $graphics = [Drawing.Graphics]::FromImage($bmp);
    $graphics.CopyFromScreen($bounds.Location, [Drawing.Point]::Empty, $bounds.size);
    $bmp.Save($path);
    $graphics.Dispose();
    $bmp.Dispose();
}