using System;
using System.Runtime.InteropServices;
using System.Text;
using System.Drawing;
using System.Security.Principal;

namespace CMM.Library.WinAPI
{
    public static class Win32
    {
        public const int WM_SETTEXT = 0x000C;
        public const int WM_CLICK = 0x00F5;
        public const int CHILDID_SELF = 0;
        public const int CHILDID_1 = 1;
        public const int OBJID_CLIENT = -4;

        [DllImport("user32.dll", EntryPoint = "GetWindowText", CharSet = CharSet.Unicode)]
        public static extern int GetWindowText(IntPtr hwnd, StringBuilder lpString, int cch);
        [DllImport("user32.dll", EntryPoint = "FindWindowEx", CharSet = CharSet.Auto)]
        public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
        public static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, string lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
        public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
        [DllImport("User32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern int SendMessage(IntPtr hWnd, uint msg, int wParam, IntPtr lParam);
        [DllImport("User32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        public static extern int SendMessage(IntPtr hWnd, uint msg, int wParam, StringBuilder lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, string lParam);
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern int MoveWindow(IntPtr hWnd, int x, int y, int nWidth, int nHeight, bool BRePaint);
        [DllImport("user32.dll")]
        public static extern int GetWindowRect(IntPtr hwnd, out Rectangle lpRect);
        [DllImport("user32.dll")]
        public static extern bool SetForegroundWindow(IntPtr hWnd);
        [DllImport("user32.dll")]
        public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
        [DllImport("user32.dll")]
        public static extern int SetWindowCompositionAttribute(IntPtr hwnd, ref WindowCompositionAttributeData data);

        public static bool IsUAC()
        {
            var principal = new WindowsPrincipal(WindowsIdentity.GetCurrent());
            return principal.IsInRole(WindowsBuiltInRole.Administrator);
        }
    }
}