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...

quote:

---

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

---

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);

---

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;
        }

---

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;
}

---

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)

---

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;
}

---

Still wont work, I'm sure there's a really simple thing wrong with the code somewhere! Frustrating huh!

It does work in the MainForm_Load method though

Wanna chat about this on MSN? My address is my username at gmail dot com.

- Jedimark

Ok I don't have time now, add you later