hook.cs

语音视频功能 里面实现了基本的QQ与语音对话

using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace gowk.common
{
	public class HookEventArgs : EventArgs
	{
		int m_nCode;
		IntPtr m_wParam;
		IntPtr m_lParam;
		public HookEventArgs(int nCode, IntPtr wParam, IntPtr lParam):base(){this.m_lParam=lParam;this.m_nCode=nCode;this.m_wParam=wParam;}
		public int nCode{get{return this.m_nCode;}}
		public IntPtr wParam{get{return this.m_wParam;}}
		public IntPtr lParam{get{return this.m_lParam;}}
	}


	public delegate void HookEventHandler(object sender, HookEventArgs e);

	public enum HookType
	{
		WH_JOURNALRECORD = 0,
		WH_JOURNALPLAYBACK = 1,
		WH_KEYBOARD = 2,
		WH_GETMESSAGE = 3,
		WH_CALLWNDPROC = 4,
		WH_CBT = 5,
		WH_SYSMSGFILTER = 6,
		WH_MOUSE = 7,
		WH_HARDWARE = 8,
		WH_DEBUG = 9,
		WH_SHELL = 10,
		WH_FOREGROUNDIDLE = 11,
		WH_CALLWNDPROCRET = 12,		
		WH_KEYBOARD_LL = 13,
		WH_MOUSE_LL = 14
	}


	public class Hooker
	{
		private delegate int HookProc(int code, IntPtr wParam, IntPtr lParam);

		IntPtr m_hhook;
		HookProc m_cb = null;
		HookType m_ht;
		public event HookEventHandler HookEvent;

		public Hooker(HookType type)
		{
			this.m_ht=type;
			this.m_cb=new HookProc(this.CallBack);
		}

		public HookType HookType{get{return this.m_ht;}}

		protected int CallBack(int code, IntPtr wParam, IntPtr lParam)
		{
			if (code < 0)return CallNextHookEx(m_hhook, code, wParam, lParam);

			if(this.HookEvent!=null)this.HookEvent(this,new HookEventArgs(code,wParam,lParam));

			return CallNextHookEx(m_hhook, code, wParam, lParam);
		}

		public void Install()
		{
			m_hhook = SetWindowsHookEx(m_ht,m_cb,IntPtr.Zero,AppDomain.GetCurrentThreadId());
		}

		public void Uninstall()
		{
			UnhookWindowsHookEx(m_hhook); 
		}


		#region

		[DllImport("user32.dll",CharSet=CharSet.Auto, CallingConvention=CallingConvention.StdCall)]
		static extern IntPtr SetWindowsHookEx(HookType idHook,HookProc lpfn,IntPtr hMod,int dwThreadId);

		[DllImport("user32.dll",CharSet=CharSet.Auto, CallingConvention=CallingConvention.StdCall)]
		static extern bool UnhookWindowsHookEx(IntPtr hhk);

		[DllImport("user32.dll",CharSet=CharSet.Auto, CallingConvention=CallingConvention.StdCall)]
		static extern int CallNextHookEx(IntPtr hhk,int nCode,IntPtr wParam,IntPtr lParam);
		#endregion
	}
}