Shoutbox

Do you mean changing the titlebar caption of the window?

code:

---

function SetWindowText(hWnd, sText){
    Interop.Call('user32', 'SetWindowTextW', hWnd, sText);
}

---

Usage would be something like this

code:

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var pChatWnd = MsgPlus.CreateWnd('xmlfile', 'WindowId')
SetWindowText(pChatWnd.Handle, 'new text');

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Should work, like most scripts I post I can't test it as I am at work not home.