Shoutbox

Hello folks,

Just a quick question, how do you write to the MsgPlus event log in C#?

Thanks!

---- Anderson ----

Editted again (this one does work):

code:

---

    const int HWND_BROADCAST = 0xFFFF;
    [DllImport("user32", EntryPoint="RegisterWindowMessageA")] public static extern int RegisterWindowMessage([MarshalAs(UnmanagedType.LPStr)]string lpString);
    [DllImport("user32", EntryPoint="SendMessageA")] public static extern int SendMessage(int hwnd, int wMsg, int wParam, int lParam);
   
    private struct MPL_EVENTLOG_INFO
    {
        public int sUser;
        public int sEvent;
        public int nReserved;
    }
   
    public bool AddEventEntry(string sUser, string sEvent)
    {
        MPL_EVENTLOG_INFO info = new MPL_EVENTLOG_INFO();
        info.nReserved = 0;

        System.Runtime.InteropServices.GCHandle userPtr = new System.Runtime.InteropServices.GCHandle();
        if(sUser.Length < 1)
        {
            info.sUser = 0;
        }
        else
        {
            userPtr = System.Runtime.InteropServices.GCHandle.Alloc(sUser, System.Runtime.InteropServices.GCHandleType.Pinned);
            info.sUser = userPtr.AddrOfPinnedObject().ToInt32();
        }
       
        System.Runtime.InteropServices.GCHandle eventPtr = new System.Runtime.InteropServices.GCHandle();
        if(sEvent.Length < 1)
        {
            info.sEvent = 0;
        }
        else
        {
            eventPtr = System.Runtime.InteropServices.GCHandle.Alloc(sEvent, System.Runtime.InteropServices.GCHandleType.Pinned);
            info.sEvent = eventPtr.AddrOfPinnedObject().ToInt32();
        }

        int nMsg = RegisterWindowMessage("MessengerPlus_AddEventLog");
        System.Runtime.InteropServices.GCHandle infoPtr = System.Runtime.InteropServices.GCHandle.Alloc(info, System.Runtime.InteropServices.GCHandleType.Pinned);

        int nResult = SendMessage(HWND_BROADCAST, nMsg, infoPtr.AddrOfPinnedObject().ToInt32(), 1);

        if(info.sEvent != 0)
        {
            eventPtr.Free();
        }
        if(info.sUser != 0)
        {
            userPtr.Free();
        }
        infoPtr.Free();

        return true;
    }

---

Did you test it already? Does it work?

J: I wrote very similar code to you when I was trying to integrate my Music Logger Plus plugin with the MsgPlus event log but couldnt for the life get it to actually work (there were no compile problems). I tried your code aswell and no luck either.

I'm guessing that the call is getting rejected by MsgPlus for some security reasons.

How should I invoke the method?

andersona91: Did you get it to work?

- Mark

Ok I'll test it myself later. I assume that patchou did test his VB.NET code, so that must be correct.

If the VB.NET code works, this should also work in my opinion...

---

Sorry I made a little mistake in my code!

It does work now . Make sure you've got the option to log things on. By the way, it isn't possible to write to the conversation logs, only to the "actions log" (don't know how it's called, in dutch it's the "gebeurtenissenlogboek".

quote:

---

Originally posted by J-Thread
(don't know how it's called, in dutch it's the "gebeurtenissenlogboek").

---

Event Log

----

ps: try to not double post... If you wanna add something, edit your previous post...

J-Thread: Your code works (sort of) and mine doesn't so I'll just use yours lol

Anyway, I have the AddEventEntry in a class called Utilities.cs and I made it "public static bool" so I could then do:

code:

---

MLP.Utilities.AddEventEntry(thisContact, language[18] + " " + thisTitle + " " + language[19] + " " + thisArtist);

---

But it doesn't work.

However, I can write to the EventLog if I call the method from "MainForm_Load", why is this?

The method I want it to be called from is simply:

code:

---

private bool addEventLog(string thisContact, string thisTitle, string thisArtist)
        {
            RegistryKey rootPath = Registry.CurrentUser.CreateSubKey("Software\\Jedimark\\Music Logger Plus");
            string logStatus = rootPath.GetValue("LogToPlus").ToString();
            if (logStatus.Equals("true"))
            {
                MLP.Utilities.AddEventEntry(thisContact, language[18] + " " + thisTitle + " " + language[19] + " " + thisArtist);
                return true;
            }
            return false;
        }

---

(and yes, the if statement does return "true" so it is executing the call)

About that static method, it should work indeed. I don't know what the problem is...

About the code you posted, I see a huge bug!

code:

---

private bool addEventLog(string thisContact, string thisTitle, string thisArtist)
{
RegistryKey rootPath = Registry.CurrentUser.OpenSubKey("Software\\Jedimark\\Music Logger Plus");
string logStatus = rootPath.GetValue("LogToPlus").ToString();
if (logStatus.Equals("true"))
{
MLP.Utilities.AddEventEntry(thisContact, language[18] + " " + thisTitle + " " + language[19] + " " + thisArtist);
return true;
}
return false;
}

---

I hope you use OpenSubKey and not CreateSubkey!

There is a better way to store booleans in the registry btw. Use a DWORD value, set it 1 for true and 0 for false.

Does it work when you make your addEventLog function static also?

Yeah you're right it should be OpenSubKey, a rushed method!

The addEventLog doesn't work if it's static, I tried that already! I'm actually well and truely stuck with this one... this is what working full time has done to me

Ok I did test it and this works:

In Utilities.cs, make the following code:

code:

---

[ComVisible(false)]
public class Utilities
{
    const int HWND_BROADCAST = 0xFFFF;
    [DllImport("user32", EntryPoint="RegisterWindowMessageA")] public static extern int RegisterWindowMessage([MarshalAs(UnmanagedType.LPStr)]string lpString);
    [DllImport("user32", EntryPoint="SendMessageA")] public static extern int SendMessage(int hwnd, int wMsg, int wParam, int lParam);

    public Utilities()
    {
    }
    public static bool AddEventEntry(string sUser, string sEvent)
....(here the rest of my function)

---

Then your other function should be:

code:

---

private bool addEventLog(string thisContact, string thisTitle, string thisArtist)
{
RegistryKey rootPath = Registry.CurrentUser.OpenSubKey("Software\\Jedimark\\Music Logger Plus");
string logStatus = rootPath.GetValue("LogToPlus").ToString();
if (logStatus.Equals("true"))
{
Utilities.AddEventEntry(thisContact, language[18] + " " + thisTitle + " " + language[19] + " " + thisArtist);
return true;
}
return false;
}

---

So remove the namespace. This should all work. By the way, do you see an error or something? How do you know it isn't working?