[TYPO3] Selecting fields from tt_content

[Heiner Lamprecht]

Hi,

I'm trying to develop a small extension.  I've added a new column to
tt_content and added the appropriate inputfields to TCA.  They are
shown in BE and saved, when I enter data.

Now I want to overwrite the way, image-links are created, if some
data is entered in this column.  If nothing is entered, the normal
methods of creating the link shall apply.

But it seems, I can't access the column.  I don't think, I have to
make a select to the table again, as it is already done, isn't it?

ext_localconf.php contains:
$TYPO3_CONF_VARS[TYPO3_MODE]['XCLASS']
['tslib/class.tslib_content.php'] = 
t3lib_extMgm::extPath('user_hl_showpic') . 
'class.ux_tslib_content.php';
and the referred file defines the class "ux_tslib_cObj", which
extends "tslib_cObj" and contains a new function "imageLinkWrap".

So, the questions are:  How can I access my new column?  And how can
I explicitly call the old "imageLinkWrap" from within my code?

Thanks for any hint,


    Heiner

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