using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.InteropServices;
using System.Drawing;
using System.ComponentModel;

namespace ZitiDesktopEdge {

    public class WinAPI {
        public struct RECT {
            public int left;
            public int top;
            public int right;
            public int bottom;

            public override string ToString() {
                return "(" + left + ", " + top + ") --> (" + right + ", " + bottom + ")";
            }
        }

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr FindWindow(string strClassName, string strWindowName);

        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, IntPtr windowTitle);

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool GetWindowRect(IntPtr hWnd, out RECT lpRect);


        public static IntPtr GetTrayHandle() {
            IntPtr taskBarHandle = WinAPI.FindWindow("Shell_TrayWnd", null);
            if (!taskBarHandle.Equals(IntPtr.Zero)) {
                return WinAPI.FindWindowEx(taskBarHandle, IntPtr.Zero, "TrayNotifyWnd", IntPtr.Zero);
            }
            return IntPtr.Zero;
        }

        public static Rectangle GetTrayRectangle() {
            WinAPI.RECT rect;
            WinAPI.GetWindowRect(WinAPI.GetTrayHandle(), out rect);
            return new Rectangle(new Point(rect.left, rect.top), new Size((rect.right - rect.left) + 1, (rect.bottom - rect.top) + 1));
        }
    }
}