Control the Application Window

Position and size the Application window

(PresentationCore.dll을 참조추가 해야한다.)

using System.Drawing;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;

[CommandMethod("PositionApplicationWindow")]
public static void PositionApplicationWindow()
{
  // Set the position of the Application window
  //응용 프로그램 윈도우의 위치를 설정
  Point ptApp = new Point(0, 0);
  Application.MainWindow.Location = ptApp;

  // Set the size of the Application window
  //응용 프로그램 창의 크기를 설정
  Size szApp = new Size(400, 400);
  Application.MainWindow.Size = szApp;
}

Minimize and maximize the Application window
using System.Drawing;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Windows;

[CommandMethod("MinMaxApplicationWindow")]
public static void MinMaxApplicationWindow()
{
  // Minimize the Application window
  Application.MainWindow.WindowState = Window.State.Minimized;
  System.Windows.Forms.MessageBox.Show("Minimized", "MinMax",
              System.Windows.Forms.MessageBoxButtons.OK,
              System.Windows.Forms.MessageBoxIcon.None,
              System.Windows.Forms.MessageBoxDefaultButton.Button1,
              System.Windows.Forms.MessageBoxOptions.ServiceNotification);

  // Maximize the Application window
  Application.MainWindow.WindowState = Window.State.Maximized;
  System.Windows.Forms.MessageBox.Show("Maximized", "MinMax");
}


Find the current state of the Application window
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Windows;

[CommandMethod("CurrentWindowState")]
public static void CurrentWindowState()
{
  System.Windows.Forms.MessageBox.Show("The application window is " +
                                       Application.MainWindow.WindowState.ToString(),
                                       "Window State");
}

Make the Application window invisible and visible
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Windows;

[CommandMethod("HideWindowState")]
public static void HideWindowState()
{
  // Hide the Application window
  Application.MainWindow.Visible = false;
  System.Windows.Forms.MessageBox.Show("Invisible", "Show/Hide");

  // Show the Application window
  Application.MainWindow.Visible = true;
  System.Windows.Forms.MessageBox.Show("Visible", "Show/Hide");
}

출처
http://docs.autodesk.com/ACD/2010/ENU/AutoCAD%20.NET%20Developer%27s%20Guide/index.html