using System;
using System.Runtime.InteropServices;
using System.Text;

namespace Notepad.Extensions.Logging
{
    static class NativeMethods
    {
        [DllImport("User32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

        [DllImport("User32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        public static extern IntPtr FindWindowEx(IntPtr hWndParent, IntPtr hWndChildAfter, string lpszClass, string lpszWindow);

        public const int EM_REPLACESEL = 0x00C2;

        [DllImport("User32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, [MarshalAs(UnmanagedType.LPWStr)] string lParam);

        public const int SCI_ADDTEXT = 2001;

        [DllImport("User32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);

        public delegate bool EnumWindowsDelegate(IntPtr hWnd, object lParam);

        [DllImport("user32.dll")]
        public static extern bool EnumWindows(EnumWindowsDelegate lpEnumFunc, object lParam);

        [DllImport("User32.dll", CharSet = CharSet.Unicode)]
        public static extern int GetWindowText(IntPtr hWndParent, StringBuilder sb, int maxCount);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress, IntPtr dwSize, int flAllocationType, int flProtect);

        public const int MEM_COMMIT = 0x00001000;
        public const int MEM_RESERVE = 0x00002000;
        public const int MEM_RELEASE = 0x8000;
        public const int PAGE_READWRITE = 0x04;

        [DllImport("kernel32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool VirtualFreeEx(IntPtr hProcess, IntPtr lpAddress, IntPtr dwSize, int dwFreeType);

        [DllImport("User32.dll")]
        public static extern int GetWindowThreadProcessId(IntPtr hWnd, out int lpdwProcessId);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern int WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, byte[] lpBuffer, IntPtr nSize, out IntPtr lpNumberOfBytesWritten);
    }
}