Win32GUIUtil.cs

/*
 * Copyright 2024 Nathanne Isip
 * 
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software
 * and associated documentation files (the “Software”),
 * to deal in the Software without restriction,
 * including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit
 * persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 * 
 * The above copyright notice and this permission notice
 * shall be included in all copies or substantial portions
 * of the Software.
 */

using System.Runtime.InteropServices;

namespace Feihua
{
    public class Win32GUIUtil
    {
        public enum Bool
        {
            False = 0,
            True
        };

        public const Int32 ULW_COLORKEY = 0x00000001;
        public const Int32 ULW_ALPHA = 0x00000002;
        public const Int32 ULW_OPAQUE = 0x00000004;

        public const byte AC_SRC_OVER = 0x00;
        public const byte AC_SRC_ALPHA = 0x01;

        public const int WM_NCLBUTTONDOWN = 0xA1;
        public const int EM_SETCUEBANNER = 0x1501;
        public const int HT_CAPTION = 0x2;

        public const int AW_HOR_POSITIVE = 0X1;
        public const int AW_HOR_NEGATIVE = 0X2;
        public const int AW_VER_POSITIVE = 0X4;
        public const int AW_VER_NEGATIVE = 0X8;
        public const int AW_CENTER = 0X10;
        public const int AW_HIDE = 0X10000;
        public const int AW_ACTIVATE = 0X20000;
        public const int AW_SLIDE = 0X40000;
        public const int AW_BLEND = 0X80000;

        [StructLayout(LayoutKind.Sequential, Pack = 1)]
        public struct BLENDFUNCTION
        {
            public byte BlendOp;
            public byte BlendFlags;
            public byte SourceConstantAlpha;
            public byte AlphaFormat;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct Point
        {
            public Int32 x;
            public Int32 y;

            public Point(Int32 x, Int32 y)
            {
                this.x = x;
                this.y = y;
            }
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct Size
        {
            public Int32 cx;
            public Int32 cy;

            public Size(Int32 cx, Int32 cy)
            {
                this.cx = cx;
                this.cy = cy;
            }
        }

        [DllImport("user32.dll")]
        public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern Int32 SendMessage(IntPtr hWnd, int msg, int wParam, [MarshalAs(UnmanagedType.LPWStr)] string lParam);

        [DllImport("user32.dll")]
        public static extern bool ReleaseCapture();

        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int AnimateWindow(IntPtr hwand, int dwTime, int dwFlags);
    }
}