C#学习，整理一些API类，外挂编程需要用到

using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;
using System.Security;
using System.Security.Permissions;

namespace Iislove.ClassLibrary
{
public class API
{
public const int MEM_COMMIT = 0x1000;
public const int OPEN_PROCESS_ALL = 0x1f0fff;
public const int PAGE_READWRITE = 4;
public const int PROCESS_CREATE_THREAD = 2;
public const int PROCESS_HEAP_ENTRY_BUSY = 4;
public const int PROCESS_VM_OPERATION = 8;
public const int PROCESS_VM_READ = 0x100;
public const int PROCESS_VM_WRITE = 0x20;
public const int WM_KEYDOWN = 0x100;
public const int WM_KEYUP = 0x101;
public const int WM_LBUTTONDBLCLK = 0x203;
public const int WM_LBUTTONDOWN = 0x201;
public const int WM_LBUTTONUP = 0x202;
public const int WM_MBUTTONDBLCLK = 0x209;
public const int WM_MBUTTONDOWN = 0x207;
public const int WM_MBUTTONUP = 520;
public const int WM_MOUSEMOVE = 0x200;
public const int WM_RBUTTONDBLCLK = 0x206;
public const int WM_RBUTTONDOWN = 0x204;
public const int WM_RBUTTONUP = 0x205;
public const int WM_SYSKEYDOWN = 260;
public const int WM_SYSKEYUP = 0x105;
public const int WS_SHOWNORMAL = 1;

[DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
public static extern int CallNextHookEx(int idHook, int nCode, int wParam, IntPtr lParam);
[DllImport("kernel32.dll")]
public static extern int CloseHandle(int hObject);
[DllImport("Kernel32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr CreateMutex(IntPtr lpMutexAttributes, int bInitialOwner, string lpName);
[DllImport("kernel32")]
public static extern int CreateRemoteThread(int hProcess, int lpThreadAttributes, int dwStackSize, int lpStartAddress, int lpParameter, int dwCreationFlags, ref int lpThreadId);
[DllImport("user32.dll")]
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll")]
public static extern int FindWindowEx(int hwndParent, int hwndChildAfter, string lpszClass, string lpszWindow);
[DllImport("user32.dll")]
public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
[DllImport("kernel32.dll", CharSet = CharSet.Ansi)]
public static extern bool FreeLibrary(IntPtr dllPointer);
[DllImport("Kernel32")]
public static extern int FreeLibrary(int handle);
[DllImport("user32.dll")]
public static extern int GetClassName(int hwnd, ref StringBuilder lpClassName, int nMaxCount);
[DllImport("user32.dll")]
public static extern int GetCursorPos(out POINTAPI lpPoint);
[DllImport("user32.dll")]
public static extern int GetDC(int hwnd);
[DllImport("user32.dll")]
public static extern IntPtr GetForegroundWindow();
[DllImport("user32.dll")]
public static extern int GetKeyboardState(byte[] pbKeyState);
public static IntPtr GetLocalWindow()
{
POINTAPI point;
GetCursorPos(out point);
return WindowFromPoint(point);
}

[DllImport("kernel32.dll")]
public static extern int GetModuleHandle(string lpModuleName);
[DllImport("gdi32.dll")]
public static extern int GetPixel(int hdc, int x, int y);
[DllImport("kernel32")]
public static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);
[DllImport("kernel32.dll", CharSet = CharSet.Ansi)]
public static extern IntPtr GetProcAddress(IntPtr dllPointer, string functionName);
[DllImport("Kernel32")]
public static extern int GetProcAddress(int handle, String funcname);
[DllImport("user32.dll")]
public static extern int GetWindowThreadProcessId(int hwnd, ref int lpdwProcessId);
[DllImport("user32.dll")]
public static extern int GetWindowThreadProcessId(IntPtr hwnd, ref int lpdwProcessId);
[DllImport("kernel32.dll", EntryPoint = "LoadLibraryA", CharSet = CharSet.Ansi)]
public static extern int LoadLibrary(string lpLibFileName);
//[DllImport("Kernel32.dll")]
//public static extern int LoadLibrary(String funcname);
[DllImport("kernel32.dll", EntryPoint = "LoadLibrarEx")]
public static extern IntPtr LoadLibraryEx(string dllFilePath, IntPtr hFile, uint dwFlags);
[DllImport("user32.dll")]
public static extern void mouse_event(int dwFlags, int dx, int dy, int cButtons, int dwExtraInfo);
[DllImport("Kernel32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr OpenMutex(uint dwDesiredAccess, int bInheritHandle, string lpName);
[DllImport("kernel32.dll")]
public static extern int OpenProcess(int dwDesiredAccess, int bInheritHandle, int dwProcessId);
[DllImport("kernel32.dll")]
public static extern IntPtr OpenProcess(uint dwDesiredAccess, int bInheritHandle, uint dwProcessId);
[DllImport("user32.dll", CharSet = CharSet.Unicode)]
public static extern IntPtr PostMessage(IntPtr hwnd, int wMsg, IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, ref int lpBaseAddress, ref int lpBuffer, int nSize, ref int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, out byte lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, out double lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, byte[] lpBuffer, uint nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, out int lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, out float lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, out string lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, byte[] lpBuffer, int nSize, ref int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, out char lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, ref int lpBuffer, int nSize, ref int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, char lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, IntPtr lpBaseAddress, out int lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, IntPtr lpBaseAddress, ref int lpBuffer, int nSize, ref int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, IntPtr lpBaseAddress, int lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, out IntPtr lpBaseAddress, out int lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("Kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, int lpBaseAddress, byte lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(int hProcess, ref IntPtr lpBaseAddress, ref int lpBuffer, int nSize, ref int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(IntPtr hProcess, int lpBaseAddress, ref int lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int ReadProcessMemory(IntPtr hProcess, ref int lpBaseAddress, ref int lpBuffer, int nSize, int lpNumberOfBytesWritten);
[DllImport("user32.dll")]
public static extern int ReleaseDC(int hwnd, int hdc);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern int SendMessage(int hwnd, int wMsg, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, string lParam);
[DllImport("user32.dll")]
public static extern int SetCursorPos(int x, int y);
[DllImport("user32.dll")]
public static extern void SetForegroundWindow(int hwnd);
[DllImport("user32.dll")]
public static extern int SetWindowPos(int hwnd, int hWndInsertAfter, int x, int y, int cx, int cy, int wFlags);
[DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, int hInstance, int threadId);
[DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);
[DllImport("user32.dll")]
public static extern int ToAscii(int uVirtKey, int uScanCode, byte[] lpbKeyState, byte[] lpwTransKey, int fuState);
[DllImport("user32.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Auto)]
public static extern bool UnhookWindowsHookEx(int idHook);
[DllImport("Kernel32.dll")]
public static extern int VirtualAllocEx(int hProcess, int lpAddress, int dwSize, int flAllocationType, int flProtect);
[DllImport("Kernel32.dll")]
public static extern int VirtualAllocEx(IntPtr hProcess, int lpAddress, int dwSize, short flAllocationType, short flProtect);
[DllImport("Kernel32.dll")]
public static extern uint VirtualAllocEx(IntPtr hProcess, uint lpAddress, uint dwSize, uint flAllocationType, uint flProtect);
[DllImport("kernel32.dll")]
public static extern int VirtualProtectEx(int hProcess, int lpAddress, int dwSize, int flNewProtect, int lpflOldProtect);
[DllImport("kernel32.dll")]
public static extern int VirtualProtectEx(int hProcess, ref int lpAddress, int dwSize, int flNewProtect, ref int lpflOldProtect);
[DllImport("user32.dll")]
public static extern IntPtr WindowFromPoint(POINTAPI lpPoint);
[DllImport("kernel32")]
public static extern long WritePrivateProfileString(string section, string key, string val, string filePath);
[DllImport("kernel32.dll")]
public static extern int WriteProcessMemory(int hProcess, int lpBaseAddress, byte[] buffer, int size, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int WriteProcessMemory(int hProcess, ref int lpBaseAddress, ref char[] lpBuffer, int nSize, ref int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int WriteProcessMemory(int hProcess, ref int lpBaseAddress, ref int lpBuffer, int nSize, ref int lpNumberOfBytesWritten);
[DllImport("kernel32.dll")]
public static extern int WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, [In, Out] byte[] buffer, int size, out IntPtr lpNumberOfBytesWritten);
[DllImport("User32.dll")]
public static extern bool SetForegroundWindow(IntPtr hWnd);
[DllImport("User32.dll")]
public static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);
[DllImport("kernel32.dll")]
public static extern IntPtr CreateFile(string lpFileName, int dwDesAccess, int dwShareMode, SecurityAttribute lpSecurityAttributes, int dwCreationDisposition, int dwFlagsAndAttributes, IntPtr hTemplateFile);
[DllImport("gdi32.dll")]
public static extern IntPtr CreateDC(string lpszDriver, string lpszDevice, string lpszOutput, Int64 lpInitData);
[DllImport("gdi32.dll")]
public static extern IntPtr CreateCompatibleDC(IntPtr hdc);
[DllImport("gdi32.dll")]
public static extern int GetDeviceCaps(IntPtr hdc, GetDeviceCapsIndex nIndex);
[DllImport("gdi32.dll")]
public static extern IntPtr CreateCompatibleBitmap(IntPtr hdc, int nWidth, int nHeight);
[DllImport("gdi32.dll")]
public static extern IntPtr SelectObject(IntPtr hdc, IntPtr hgdiobj);
[DllImport("gdi32.dll")]
public static extern int BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, UInt32 dwRop);
[DllImport("gdi32.dll")]
public static extern int DeleteDC(IntPtr hdc);
[DllImport("user32.dll")]
public static extern int EnumWindows(CallBack x, int y);

public delegate int HookProc(int nCode, int wParam, IntPtr lParam);
public delegate bool CallBack(int hwnd, int lParam);

public enum HookType
{
WH_JOURNALRECORD,
WH_JOURNALPLAYBACK,
WH_KEYBOARD,
WH_GETMESSAGE,
WH_CALLWNDPROC,
WH_CBT,
WH_SYSMSGFILTER,
WH_MOUSE,
WH_HARDWARE,
WH_DEBUG,
WH_SHELL,
WH_FOREGROUNDIDLE,
WH_CALLWNDPROCRET,
WH_KEYBOARD_LL,
WH_MOUSE_LL
}
public enum uType
{
MB_ICONASTERISK
}
public enum GetDeviceCapsIndex
{
ASPECTX,
ASPECTXY,
ASPECTY,
BITSPIXEL,
CLIPCAPS,
COLORRES,
CC_CHORD,
CC_CIRCLES,
CC_ELLIPSES,
HORZSIZE,
VERTSIZE,
HORZRES,
VERTRES,
LOGPIXELSX,
LOGPIXELSY,
PLANES,

}

[StructLayout(LayoutKind.Sequential)]
public class KeyboardHookStruct
{
public int vkCode;
public int scanCode;
public int flags;
public int time;
public int dwExtraInfo;
}

[StructLayout(LayoutKind.Sequential)]
public class MouseHookStruct
{
public API.POINTAPI pt;
public int hwnd;
public int wHitTestCode;
public int dwExtraInfo;
}

[StructLayout(LayoutKind.Sequential)]
public struct POINTAPI
{
public int x;
public int y;
}
}
}