Shoutbox

done.. but no GUI (using win32 msgbox) .. a quick 5 minute script

Tested and works

code:

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var max = 8; // Automatically block incoming multi-conversations if number of participants exceeds this number. 0 to disable.
var blockall = false; // Block all incoming multi-conversations.

function OnEvent_ChatWndCreated(ChatWnd){
    if(ChatWnd.Contacts.Count < 2) return;
    Debug.Trace("Multi-conversation detected.");
    if((ChatWnd.Contacts.Count > max && max > 1) || blockall){
        Interop.Call('User32', 'PostMessageW', ChatWnd.Handle, 0x0111,  20001, 0x0000);
        Debug.Trace("A multi-conversation was blocked. Reason: Exceeded variable max");
        } else {
        Debug.Trace("Building participant list...");
        var participants = "";
        for(var e = new Enumerator(ChatWnd.Contacts);!e.atEnd();e.moveNext()){
            participants += "- " + MsgPlus.RemoveFormatCodes(e.item().Name) + " (" + e.item().Email + ")\n";
            }
        if(Interop.Call('User32', 'MessageBoxW', ChatWnd.Handle, 'An incoming multi-conversation was detected.\nList of participants:\n' + participants + 'Would you like to participate?', 'Multi Convo Blocker', 68) == 7){
            Interop.Call('User32', 'PostMessageW', ChatWnd.Handle, 0x0111,  20001, 0x0000);
            }
        }
    }

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just edit the top options