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We have a complex legacy ActiveX graph control that uses tooltips to display information when the cursor hovers over various areas of the graph. All of this works well when the control is hosted in MFC. We are now using WindowsFormsHost in WPF to display the graph and this is working well. All of the functionality we built into the control including events seems to be working well except that the tooltips are not being displayed. Are tooltip native to the ActiveX control expected to work normally?

In response to Sergey's comment my question is simply "Will a classic ActiveX control that displays a tooltip in a classic MFC application continue to display that tooltip in a WPF application when the control is hosted in a WindowsFormsHost?" If the answer to this is "Yes", I will be happy to include code so we can figure out what has gone wrong. For this question you can assume that the implementation follows Microsoft's guidelines at http://msdn.microsoft.com/en-us/library/ms742735.aspx[^] or examples from "WPF 4 Unleashed" by Adam Nathan.
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Updated 24-Oct-12 19:12pm
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Sergey Alexandrovich Kryukov 24-Oct-12 21:56pm    
Hard to say anything without having some code sample. If you can make one (it may take some labor to create one which would be complete but very short), use "Improve question" above.
--SA

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