private static extern bool GetWindowRect(IntPtr hWnd, ref APIRectangle rect);
/// <summary>
/// 获取窗体的区域
/// </summary>
/// <param name="handle">窗体句柄</param>
/// <returns></returns>
public static Rectangle GetWindowRect(IntPtr handle)
{
APIRectangle r = new APIRectangle();
GetWindowRect(handle, ref r);
return new Rectangle(r.Left, r.Top, r.Width, r.Height);
}