I have a CFormView-derived class which contains an ActiveX. ActiveX displays a diagram and,unfortunately, supports only one-line tooltips. How can I implement multi-line tooltips for this ActiveX? Tooltip should appear every time mouse pause over a diagram node. Given mouse coordinates ActiveX provides info whether mouse is over node or not, and it is possible to shut off ActiveX own tooltips.
I can provide additional info and rise points if necessary.