WinAPIFunctions.cs

﻿using System;
using System.Drawing;
using System.Runtime.InteropServices;

namespace TaskBarHidder
{
    public static class WinAPIFunctions
    {
        public delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);

        public static IntPtr SetHook(LowLevelKeyboardProc proc)
        {
            return SetWindowsHookEx(KeyboardHook.HookKeyboardLl, proc, (IntPtr) null, 0);
        }
        
        [StructLayout(LayoutKind.Sequential)]
        public struct RECT
        {
            public int left;
            public int top;
            public int right;
            public int bottom;
        }
        [StructLayout(LayoutKind.Sequential)]
        public struct AppBarData
        {
            public uint cbSize;
            public IntPtr hWnd;
            public uint uCallbackMessage;
            public uint uEdge;
            public RECT rc;
            public int lParam;
        }

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelKeyboardProc lpfn, IntPtr hMod,
            uint dwThreadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool UnhookWindowsHookEx(IntPtr hhk);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,
            IntPtr wParam, IntPtr lParam);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr GetModuleHandle(string lpModuleName);

        [DllImport("kernel32.dll")]
        private static extern IntPtr GetConsoleWindow();

        [DllImport("user32.dll")]
        private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

        [DllImport("user32.dll")]
        static extern void keybd_event(byte bVk, byte bScan, uint dwFlags,
            int dwExtraInfo);

        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
        public static extern void BlockInput([In, MarshalAs(UnmanagedType.Bool)] bool fBlockIt);

        [DllImport("shell32.dll")]
        public static extern IntPtr SHAppBarMessage(uint dwMessage, [In] ref AppBarData pData);

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