C# 中的 WH_JOURNALPLAYBACK 挂钩

Question

我正在尝试在 C# 中为“WH_JOURNALPLAYBACK”挂钩创建回调。这是我正确获得回调的代码

private delegate IntPtr JournalPlaybackProc(int nCode, IntPtr wParam, IntPtr lParam);

private static IntPtr JournalPlaybackCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
        if (HC_GETNEXT == nCode && curr < EventMsgs.Count)
        {
            EVENTMSG hookStruct = (EVENTMSG)Marshal.PtrToStructure(lParam, typeof(EVENTMSG));
            EVENTMSG currentMsg = EventMsgs[curr];
            hookStruct.message = currentMsg.message;
            hookStruct.paramL = currentMsg.paramL;
            hookStruct.paramH = currentMsg.paramH;
            hookStruct.hwnd = currentMsg.hwnd;
            hookStruct.time = currentMsg.time;
        }
        if (HC_SKIP == nCode)
        {
            curr++;
        }
        if (curr == EventMsgs.Count)
        {
            UnhookWindowsHookEx(_journalPlaybackProcHookID);
            _journalPlaybackProcHookID = IntPtr.Zero;
        }
        return CallNextHookEx(_journalPlaybackProcHookID, nCode, wParam, lParam);
}

，我想我需要用我的数据修改 lParam 的值来回放事件。我该怎么做？

Answer 1

我假设你需要

Marshal.StructureToPtr(hookStruct,lParam,true);

在某个时候写回来。当我运行时它只是挂起。