Generalhttps://www.infopathdev.com:443/forums/41.aspxIf you're not sure where to ask your question, ask it here. If necessary, our moderators will make sure it gets classified in the correct board.enCommunityServer 2007 SP3 (Build: 31118.962)Custom ActiveX Control Clarification.https://www.infopathdev.com:443/forums/thread/4742.aspxWed, 29 Jun 2005 15:04:48 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:4742ScottAtRVC0https://www.infopathdev.com:443/forums/thread/4742.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=4742Hi All.<br /><br />I am looking to author a few custom ActiveX controls. I have followed the InfoPath team blog how to on C# / ActiveX custom control authoring - <br /><a href='http://blogs.msdn.com/infopath/archive/2005/04/15/408728.aspx' target='_blank' title='http://blogs.msdn.com/infopath/archive/2005/04/15/408728.aspx'<a target="_blank" href=http://blogs.msdn.com/infopath/archive/2005/04/15/408728.aspx>http://blogs.msdn.com/infopath/archive/2005/04/15/408728.aspx</a></a><br /><br />I was wondering if someone with experience could clarify my understanding.<br /><br /><b>How does InfoPath know what control property to use as the value?</b><br />This is determined soley by the bindingProperty within the ict file. There is no InfoPath GUI menu / property menu to control this binding.<br /><br /><b>What property bindings can InfoPath handle?</b><br />InfoPath can only handle a Value and an Enabled property.<br />Irrespective of what properties are available within the custom ActiveX control, InfoPath is only capable of handling a Value and an Enabled property.<br /><br /><b>IPropertyNotifySink</b><br />Whatever events are declared by the implementation of the IPropertyNotifySink interface;<br /><pre><br /> public interface IPropertyNotifySink<br /> {<br /> int OnChanged(int dispId);<br /> <br /> [PreserveSig]<br /> int OnRequestEdit(int dispId);<br /> }<br /></pre><br />The raising of any of these events will ONLY trigger InfoPath to update the value binding within the XML DOM.<br /><br /><b>Within InfoPath</b><br />Within InfoPath it is NOT possible for managed code to hook into the events raised by the custom ActiveX control.<br /><br />Cheers. Scott.