Powershell Windows窗体边框颜色/控件？

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

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

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

        [DllImport("user32.dll", SetLastError=true)]
        public static extern int SetWindowRgn(IntPtr hWnd, IntPtr hRgn, bool bRedraw);
    }

    public static class FormUtils {
        public const int GWL_EXSTYLE = -20;
        public const int WS_EX_CLIENTEDGE = 0x200;
        public const int WM_NCPAINT = 0x85;

        public static void SetWindowBorder(Form form, Color color) {
            IntPtr hwnd = form.Handle;
            IntPtr exStyle = NativeMethods.GetWindowLong(hwnd, GWL_EXSTYLE);
            exStyle = new IntPtr(exStyle.ToInt32() | WS_EX_CLIENTEDGE);
            NativeMethods.SetWindowLong(hwnd, GWL_EXSTYLE, exStyle);
            form.Invalidate();
        }
    }
"@

# 使用示例，将窗体的边框颜色设置为红色
$form = New-Object System.Windows.Forms.Form
[FormUtils]::SetWindowBorder($form, [System.Drawing.Color]::Red)