ext_tables.php

<?php
if (!defined ('TYPO3_MODE'))  die ('Access denied.');



    ///////////////////////////////////////////////////////////
    //
    // INDEX

    // Plugin general configuration
    // Plugin 1 configuration
    // Add pagetree icons




    ///////////////////////////////////////////////////////////
    //
    // Plugin general configuration
  
  t3lib_div::loadTCA('tt_content');
    // Plugin general configuration



    ///////////////////////////////////////////////////////////
    //
    // Plugin 1 configuration
  
  $TCA['tt_content']['types']['list']['subtypes_excludelist'][$_EXTKEY.'_pi1']  = 
    'layout,select_key,pages,recursive';
    // Remove the default tt_content fields layout, select_key, pages and recursive.
  $TCA['tt_content']['types']['list']['subtypes_addlist'][$_EXTKEY.'_pi1']      =
    'pi_flexform';
    // Display the field pi_flexform
  t3lib_extMgm::addPiFlexFormValue($_EXTKEY.'_pi1', 'FILE:EXT:'.$_EXTKEY.'/pi1/flexform.xml');
    // Register our file with the flexform structure
  t3lib_extMgm::addPlugin(
    array(
      'LLL:EXT:org_installer/pi1/locallang.xml:tt_content.list_type_pi1', 
      $_EXTKEY  .'_pi1',
      'EXT:org_installer/ext_icons/ext_icon_blink.gif'
    ),
    'list_type'
  );
    // Add the Flexform to the Plugin List
    // Plugin 1 configuration



  ////////////////////////////////////////////////////////////////////////////
  // 
  // Add pagetree icons

$TCA['pages']['columns']['module']['config']['items'][] = 
  array('Org: Installer', 'org_inst', t3lib_extMgm::extRelPath($_EXTKEY).'ext_icons/ext_icon_blink.gif');
//$ICON_TYPES['org_inst'] = 
//  array('icon' => t3lib_extMgm::extRelPath($_EXTKEY).'ext_icons/ext_icon_blink.gif');
t3lib_SpriteManager::addTcaTypeIcon('pages', 'contains-org_inst', '../typo3conf/ext/org_installer/ext_icons/ext_icon_blink.gif');
  // Add pagetree icons
?>