在Windows平臺上。使用Sendmessage方法實現Unity不同進程之間通信
在Windows平臺上。使用Sendmessage方法實現Unity不同進程之間通信。
核心代碼
using System;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Text;
using UnityEngine;
/// <summary>
/// 傳遞的數據結構
/// </summary>
public struct COPYDATASTRUCT
{
? ? public IntPtr dwData;
? ? public int cData;
? ? [MarshalAs(UnmanagedType.LPStr)]
? ? public string lpData;
}
/// <summary>
/// 收到消息的數據結構，里面包含COPYDATASTRUCT數據
/// </summary>
public struct CWPRETSTRUCT
{
? ? public IntPtr lparam;//指定的消息內容
? ? public IntPtr wparam;//消息內容
? ? public uint message;//消息類型
? ? public IntPtr hwnd;//發(fā)送消息的句柄
}
public class WindowsProcessCommunication
{
? ? //全局監(jiān)聽
? ? private const int WH_CALLWNDPROC = 4;
? ? private const int WM_COPYDATA = 0x004A;
? ? [DllImport("User32.dll")]
? ? public static extern IntPtr SendMessage(IntPtr hwnd, int msg, IntPtr wParam, ref COPYDATASTRUCT IParam);
? ? [DllImport("User32.dll")]
? ? public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
? ? //設置一個監(jiān)聽
? ? [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
? ? private static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, uint dwThreadId);
? ? //移除對應事件的監(jiān)聽
? ? [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
? ? private static extern bool UnhookWindowsHookEx(int idHook);
? ? // 傳遞當前事件給下一個處理器
? ? [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
? ? private static extern int CallNextHookEx(int idHook, int nCode, IntPtr wParam, IntPtr lParam);
? ? //委托
? ? private delegate int HookProc(int nCode, IntPtr wParam, IntPtr lParam);
? ? public delegate void ReciveMsgCallback(string msg);
? ? private static ReciveMsgCallback reciveMsgCallback;
? ? static int hookID = 0;
? ??
? ? private static IntPtr myWindows;
? ? /// <summary>
? ? /// 目標窗體的進程名稱
? ? /// </summary>
? ? /// <param name="msgContent"></param>
? ? /// <param name="targetWindow"></param>
? ? public static void SendMessage(string msgContent, IntPtr targetWindow)
? ? {
? ? ? ? myWindows = FindWindow(null, Application.productName);
? ? ? ? String strSent = msgContent;
? ? ? ? if (targetWindow != IntPtr.Zero)
? ? ? ? {
? ? ? ? ? ? byte[] arr = System.Text.Encoding.Default.GetBytes(strSent);
? ? ? ? ? ? int len = arr.Length;
? ? ? ? ? ? COPYDATASTRUCT cdata;
? ? ? ? ? ? cdata.dwData = (IntPtr)100;
? ? ? ? ? ? cdata.lpData = strSent;
? ? ? ? ? ? cdata.cData = len + 1;
? ? ? ? ? ? SendMessage(targetWindow, WM_COPYDATA, myWindows, ref cdata);
? ? ? ? ? ? //Debug.LogError(msgContent);
? ? ? ? }
? ? }
? ? public static void HookLoad(ReciveMsgCallback rmsg)
? ? {
? ? ? ? reciveMsgCallback = rmsg;
? ? ? ? Debug.LogError("綁定回調");
? ? ? ? HookProc lpfn = new HookProc(Hook);
? ? ? ? IntPtr hInstance = IntPtr.Zero;
? ? ? ? hookID = SetWindowsHookEx(WH_CALLWNDPROC, lpfn, hInstance, (uint)AppDomain.GetCurrentThreadId());
? ? ? ? if (hookID<0) {?
? ? ? ? ? ? UnhookWindowsHookEx(hookID);
? ? ? ? }
? ? ? ??
? ? }
? ? //卸載鉤子
? ? public static void UnhookWindowsHookEx()
? ? {
? ? ? ? if (hookID>0)
? ? ? ? {
? ? ? ? ? ? UnhookWindowsHookEx(hookID);
? ? ? ? }
? ? }
? ? private static unsafe int Hook(int nCode, IntPtr wParam, IntPtr lParam)
? ? {
? ? ? ? try
? ? ? ? {
? ? ? ? ? ? CWPRETSTRUCT m = (CWPRETSTRUCT)Marshal.PtrToStructure(lParam, typeof(CWPRETSTRUCT));
? ? ? ? ? ? if (m.message == WM_COPYDATA)
? ? ? ? ? ? {
? ? ? ? ? ? ? ? COPYDATASTRUCT cdata = (COPYDATASTRUCT)Marshal.PtrToStructure(m.lparam, typeof(COPYDATASTRUCT));
? ? ? ? ? ? ? ? reciveMsgCallback?.Invoke(cdata.lpData);
? ? ? ? ? ? }
? ? ? ? ? ? return CallNextHookEx(hookID, nCode, wParam, lParam);
? ? ? ? }
? ? ? ? catch (Exception ex)
? ? ? ? {
? ? ? ? ? ? Debug.LogError(ex.Message);
? ? ? ? ? ? return 0;
? ? ? ? }
? ? }
}
調用代碼
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class NewBehaviourScript : MonoBehaviour
{
? ? public InputField receviceInputField;
? ? public InputField msgInputField;
? ? public Text receiveMsgText;
? ? public Button sendMsg;
? ? private void Start()
? ? {
? ? ? ? sendMsg.onClick.AddListener(() =>
? ? ? ? {
? ? ? ? ? ? if (!string.IsNullOrEmpty(msgInputField.text)) {
? ? ? ? ? ? ? ?
? ? ? ? ? ? ? ? WindowsProcessCommunication.SendMessage(msgInputField.text, WindowsProcessCommunication.FindWindow(null, receviceInputField.text));
? ? ? ? ? ? }
? ? ? ? });
? ? ? ? WindowsProcessCommunication.HookLoad(ReciveMsgCallback);
? ? }
? ? public void ReciveMsgCallback(string msg) {
? ? ? ? Debug.LogError("收到消息:" + msg);
? ? ? ? receiveMsgText.text ="收到消息："+ msg;
? ? }
? ? private void OnDestroy()
? ? {
? ? ? ? WindowsProcessCommunication.UnhookWindowsHookEx();
? ? }
}
