AnimateChangeStateManager

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using System.ComponentModel;
using System.Windows.Forms;

namespace JToolDemo
{
    public class AnimateChangeStateManager
    {
        public static void Animate(IntPtr handle, Rectangle fromRect, Rectangle toRect)
        {
            NativeMethods.RECT from = NativeMethods.RECT.FromRectangle(fromRect);
            NativeMethods.RECT to = NativeMethods.RECT.FromRectangle(toRect);
            NativeMethods.DrawAnimatedRects(handle, NativeMethods.IDANI_CAPTION, ref from, ref to);
        }

        public static void Animate(Form animateForm, Control owner)
        {
            Animate(animateForm.Handle, animateForm.Bounds, owner.RectangleToScreen(owner.ClientRectangle));
        }

        public static void Animate(Form animateForm, Rectangle bounds, bool minimized)
        {
            if (minimized)
            {
                Animate(animateForm.Handle, GetNotificationRect(), animateForm.Bounds);
            }
            else
            {
                Animate(animateForm.Handle, animateForm.Bounds, GetNotificationRect());
            }
        }

        private static Rectangle GetNotificationRect()
        {
            NativeMethods.RECT rect = new NativeMethods.RECT();
            IntPtr hwnd = NativeMethods.FindWindowEx(IntPtr.Zero, IntPtr.Zero, "Shell_TrayWnd", null);
            if (hwnd == IntPtr.Zero)
            {
                throw new Win32Exception();
            }

            hwnd = NativeMethods.FindWindowEx(hwnd, IntPtr.Zero, "TrayNotifyWnd", null);
            if (hwnd == IntPtr.Zero)
            {
                throw new Win32Exception();
            }

            hwnd = NativeMethods.FindWindowEx(hwnd, IntPtr.Zero, "SysPager", null);
            if (hwnd == IntPtr.Zero)
            {
                throw new Win32Exception();
            }

            hwnd = NativeMethods.FindWindowEx(hwnd, IntPtr.Zero, "ToolbarWindow32", null);
            if (hwnd == IntPtr.Zero)
            {
                throw new Win32Exception();
            }

            NativeMethods.GetWindowRect(hwnd, ref rect);

            return rect.Rect;
        }
    }
}