DonkingControlBase/LookupEditor/NativeMethods.cs

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/*
 * Author donking
 * http://www.donking-ch.com/ 
 */
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Drawing;

namespace DonkingControlBase
{ 
    internal class NativeMethods
    {
        public const int WM_GETMINMAXINFO = 0x0024;
        public const int WM_NCHITTEST = 0x0084;

        public const int HTTRANSPARENT = -1;
        public const int HTLEFT = 10;
        public const int HTRIGHT = 11;
        public const int HTTOP = 12;
        public const int HTTOPLEFT = 13;
        public const int HTTOPRIGHT = 14;
        public const int HTBOTTOM = 15;
        public const int HTBOTTOMLEFT = 16;
        public const int HTBOTTOMRIGHT = 17;

        [StructLayout(LayoutKind.Sequential)]
        public struct MINMAXINFO
        {
            public Point reserved;
            public Size maxSize;
            public Point maxPosition;
            public Size minTrackSize;
            public Size maxTrackSize;
        }

        public static int HIWORD(int n)
        {
            return (n >> 16) & 0xffff;
        }

        public static int HIWORD(IntPtr n)
        {
            return HIWORD(unchecked((int)(long)n));
        }

        public static int LOWORD(int n)
        {
            return n & 0xffff;
        }

        public static int LOWORD(IntPtr n)
        {
            return LOWORD(unchecked((int)(long)n));
        }
    }
}