>>>>>In a VFP5 app, I have 3 MS ActiveX controls - TreeView, ImageList (from ComCtl32.ocx) and Calendar (from MSACal70.ocx) - if the client updates MS software (e.g., Office) and selects the option to install ActiveX controls, my app's ActiveX controls don't work.
>>>>>
>>>>>The calendar comes up with everything black - was the 'default' of light gray - or with an error that Property VALUE is not found.
>>>>>In the form which contains the Calendar, the OCX was actually changed!
>>>>>Was supposed to bs MSACal70.ocx - changed to MSCal.ocx. It's the new version, but I don't want the new version, since I coded it to work with the old version.
>>>>>The form which contains the TreeView and ImageList throws a Class Not Registered error for each control.
>>>>>
>>>>>Should I just abandon use of MS ActiveX controls in my custom apps?
>>>>>I can't recode and have each client reinstall everytime they install an MS update.
>>>>>
>>>>>What is the way around this?
>>>>
>>>>I just got done reading in another thread that VFP apps will break if you change the version of the Active-X control. I don't think that there's anything you can do about that. Just a guess, but maybe if you put the ocx in your app dir instead of the system dir it won't change it? Sorry this isn't a soluion. But I thought I'd confirm that it is a VFP problem and not that you're doing something wrong.
>>>
>>>Not if you add the ActiveX control at design time; if you add the control using AddObject() at runtime during the Init() event by ProgID, you should be able to deal with updated controls, as long as the functionality is a superset of what you originally expected, and doesn't require you to do anything extra.
>>
>>That's cool, but how do you put the code into the control's events/methods at run time?
>
>Create an OLEControl subclass of the ActiveX control; the OLEControl specifies the ProgID in its OLEClass property, and adds it at runtime as a result. Add the OLEControl subclass at runtime to the form. There's an example of this in Chapter 16, using the Outline control; see the heading Subclassing Objects.

Cool, but chapter 16 of what? :)

Thanks,

-Michelle