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

namespace SmartCoalApplication.SystemLayer.FileDlgExtenders.Win32Types
{
    internal static class NativeMethods
    {
        #region Delegates
        internal delegate bool EnumWindowsCallBack(IntPtr hWnd, int lParam);
        #endregion

        #region USER32

        [DllImport("user32.dll")]
        public static extern bool IsWindow(IntPtr hwnd);
        [DllImport("user32.dll")]
        internal static extern IntPtr CreateWindowEx(
           uint dwExStyle, string lpClassName, string lpWindowName, uint dwStyle, int x, int y,
           int nWidth, int nHeight, IntPtr hWndParent, IntPtr hMenu, IntPtr hInstance, IntPtr lpParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr GetParent(IntPtr hWnd);
        [DllImport("user32.dll")]
        internal static extern bool EnableWindow(IntPtr hWnd, bool bEnable);
        [DllImport("user32.dll")]
        internal static extern IntPtr GetDlgItem(IntPtr hDlg, int nIDDlgItem);
        [DllImport("user32.dll")]
        internal static extern bool SetDlgItemText(IntPtr hDlg, int nIDDlgItem, string lpString);
        [DllImport("User32.Dll")]
        public static extern int GetDlgCtrlID(IntPtr hWndCtl);
        [DllImport("user32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        internal static extern bool GetWindowInfo(HandleRef hwnd, out WINDOWINFO pwi);
        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool SetWindowText(HandleRef hWnd, string lpString);
        [DllImport("User32.Dll")]
        public static extern void GetClassName(HandleRef hWnd, StringBuilder param, int length);
        [DllImport("user32.Dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool EnumChildWindows(HandleRef hWndParent, EnumWindowsCallBack lpEnumFunc, int lParam);
        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, string windowTitle);
        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className, IntPtr windowTitle);
        [DllImport("user32.dll")]
        internal static extern IntPtr SetParent(HandleRef hWndChild, HandleRef hWndNewParent);
        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
        internal static extern IntPtr SendMessage(HandleRef hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
        internal static extern IntPtr SendMessage(HandleRef hWnd, uint Msg, IntPtr wParam, StringBuilder lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int Width, int Height, SetWindowPosFlags flags);
        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        internal static extern bool GetWindowRect(HandleRef hwnd, ref RECT rect);
        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        internal static extern bool GetClientRect(HandleRef hwnd, ref RECT rect);
        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool DestroyWindow(IntPtr hWnd);

        [DllImport("advapi32.dll", EntryPoint = "RegCreateKeyW")]
        public static extern int RegCreateKeyW([In] UIntPtr hKey, [In] [MarshalAs(UnmanagedType.LPWStr)] string lpSubKey, out IntPtr phkResult);

        [DllImport("advapi32.dll", EntryPoint = "RegOverridePredefKey")]
        public static extern int RegOverridePredefKey([In] UIntPtr hKey, [In] IntPtr hNewHKey);

        [DllImport("advapi32.dll", EntryPoint = "RegCloseKey")]
        public static extern int RegCloseKey([In] IntPtr hKey);

        /*
                [DllImport("user32.dll")]
                public static extern IntPtr SetActiveWindow(IntPtr hWnd);
                [DllImport("user32.dll")]
                public static extern IntPtr SetForegeoundWindow(IntPtr hWnd);
         */
        #endregion
    }
}