Derived CWnd Class

Hi,
I writting a derived CWnd Class that shows balloon Messages. My problem is when the balloon appear near of the limit of the main window, the exeding part is not visible. How can i make the balloon appear outside the main window?

Thanks

Maybe with some more info on your code we could help.

Here's the code i use to create the balloon

Code:

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m_bTop = bTop;
        // TODO: Add your specialized code here and/or call the base class
        int iStringWidht=1, iStringHeight=1, curWidth;
        int lastPos=-1, curPos = -1;
        curPos = m_strMessage.Find("\n", curPos+1);
        while (curPos > lastPos) {
                curWidth = m_strMessage.Mid(lastPos+1, curPos-lastPos+1).GetLength();
                if(curWidth > iStringWidht)
                        iStringWidht = curWidth;
                lastPos = curPos;
                iStringHeight++;
                curPos = m_strMessage.Find("\n", curPos+1);
        }
        if (iStringHeight == 1)
                iStringWidht = m_strMessage.GetLength();
        CRect textRect;
        WINDOWPLACEMENT place;
        m_pParent->GetWindowPlacement(&place);
        CRect parentRect(place.rcNormalPosition);
        CPoint ptMiddle;
        ptMiddle.x = place.rcNormalPosition.left + (place.rcNormalPosition.right-place.rcNormalPosition.left)/2;
        if (bTop) {
                ptMiddle.y = place.rcNormalPosition.top;
                textRect = CRect(ptMiddle.x - (iStringWidht*3.5), ptMiddle.y-(17*iStringHeight)-35, ptMiddle.x + (iStringWidht*3.5), ptMiddle.y);
        }
        else {
                ptMiddle.y = place.rcNormalPosition.bottom;
                textRect = CRect(ptMiddle.x - (iStringWidht*3.5), ptMiddle.y, ptMiddle.x + (iStringWidht*3.5), ptMiddle.y+(17*iStringHeight)+35);
        }
       

        return CWnd::Create(BALLONMESSAGE_CLASSNAME, _T(""), WS_CHILD|WS_OVERLAPPED, textRect, m_pParent->GetParent(), 1);

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Result is attached as a jpg

The problem is because you have created a child window (WS_CHILD style) which can reside only in the client area of its parent.
You have to create a top-level one. Set WS_POPUP style for your needs since WS_OVERLAPPED always has a caption and a border. Of course remove WS_CHILD as well.