Custom Field - How does one use a rendering control (not RenderPattern) on the display form?

Does anybody know how to use a rendering control on the display form? According to Microsoft it is possible but they don't give any hints on how to it. A link to an example would be excellent, but I have not been able to find any.

The first line of the following Microsoft article says it can be done.

I found a clue here .
According to the above forum the following two function need to be overloaded.

UpdateFieldValueInItem in basefieldcontrol and  GetValidatedString in SPField class
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above post will help you as the answer of your question.. author has created custom color picker using custom rendering control

check the source code.. it will help you to create your own custom render control and use it while displaying the value in display list item.

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dmoss123Author Commented:
Thanks for the solution. I had given up on getting it to work. I was able to meet my current needs by overriding the RenderFieldForDisplay method. However, I'm just starting to get heavily into creating custom fields and have other needs that will require using a custom render control.
dmoss123Author Commented:
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