WinAPI.cs

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

namespace InteropMgr
{
    public static class WinAPI
    {
        [DllImport("user32.dll")]
        public static extern bool AttachThreadInput(uint idAttach, uint idAttachTo, bool fAttach);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool CloseHandle(IntPtr hObject);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern IntPtr CreateRemoteThread(IntPtr hProcess, IntPtr lpThreadAttributes, uint dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, out IntPtr lpThreadId);

        [DllImport("Psapi.dll", SetLastError = true)]
        public static extern bool EnumProcessModules(IntPtr hProcess, IntPtr[] lphModule, uint cb, out uint lpcbNeeded);

        [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
        public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool FreeLibrary(IntPtr hLibModule);

        [DllImport("kernel32.dll")]
        public static extern uint GetCurrentThreadId();

        [DllImport("kernel32.dll")]
        public static extern bool GetExitCodeThread(IntPtr hThread, out IntPtr lpExitCode);

        [DllImport("user32.dll")]
        public static extern IntPtr GetForegroundWindow();

        [DllImport("kernel32.dll")]
        public static extern uint GetLastError();

        [DllImport("user32.dll")]
        public static extern IntPtr GetMessageExtraInfo();

        [DllImport("Psapi.dll", SetLastError = true, CharSet = CharSet.Unicode)]
        public static extern uint GetModuleBaseNameA(IntPtr hProcess, IntPtr hModule, byte[] lpBaseName, uint nSize);

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

        [DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
        public static extern IntPtr GetModuleHandleA(string lpModuleName);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool GetModuleHandleExA(uint dwFlags, IntPtr lpModuleName, out IntPtr phModule);

        [DllImport("kernel32.dll", CharSet = CharSet.Ansi, ExactSpelling = true, SetLastError = true)]
        public static extern IntPtr GetProcAddress(IntPtr hModule, string procName);

        [DllImport("user32.dll", SetLastError = true)]
        public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);

        [DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool IsWow64Process([In] IntPtr process, [Out] out bool wow64Process);

        [DllImport("user32.dll")]
        public static extern uint MapVirtualKey(uint uCode, uint uMapType);

        [DllImport("kernel32.dll")]
        public static extern IntPtr OpenProcess(int dwDesiredAccess, bool bInheritHandle, int dwProcessId);

        [DllImport("User32.Dll", EntryPoint = "PostMessageA")]
        public static extern bool PostMessage(IntPtr hWnd, uint msg, int wParam, int lParam);

        [DllImport("kernel32.dll")]
        public static extern bool ReadProcessMemory(uint hProcess, long lpBaseAddress, byte[] lpBuffer, uint dwSize, ref int lpNumberOfBytesRead);

        [DllImport("User32.dll")]
        public static extern uint SendInput(uint numberOfInputs, [MarshalAs(UnmanagedType.LPArray, SizeConst = 1)] InputManager.NativeResources.INPUT[] input, int structSize);

        [DllImport("user32.dll")]
        public static extern IntPtr SetFocus(IntPtr hWnd);

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        public static extern bool SetForegroundWindow(IntPtr hWnd);

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

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

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern uint WaitForSingleObject(IntPtr hThread, uint dwMilliseconds);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool WriteProcessMemory(uint hProcess, long lpBaseAddress, byte[] lpBuffer, uint dwSize, ref int lpNumberOfBytesWritten);

        [DllImport("kernel32.dll", SetLastError = true)]
        public static extern bool WriteProcessMemory(uint hProcess, int lpBaseAddress, byte[] lpBuffer, uint dwSize, ref int lpNumberOfBytesWritten);

        [DllImport("user32.dll")]
        public static extern byte VkKeyScan(char ch);
    }
}