[TYPO3-dev] I don't understand the documentation for creating hooks

[tapio]

Hi

Sometimes explations are really awfull:

http://typo3.org/documentation/document-library/core-documentation/doc_core_api/current/view/3/4/

*TOO MUCH*
1 ...

2  ...

3 ...

Extremely difficult to catch what to do. Not a good instruction.
I have *VERY BIG DIFFICULTIES TO UNDERSTAND HOOK EXPLANATIONS*
I have seldom this kind of difficulties but this is really one of the 
explanations, which I have have serious difficulties to understand,
what's the point.


									}

Because I have extremely serious difficulties to understand the
explantions I ask for help creating hook here

/*

$TYPO3_CONF_VARS['EXTCONF'][ extension_key ][ sub_key ] = value

	// Register our class at a hook in TCEmain:
$GLOBALS 
['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processDatamapClass'][] 
= 'EXT:templavoila/class.tx_templavoila_tcemain.php:tx_templavoila_tcemain';

				$hookObjectsArr = array();
		if (is_array 
($TYPO3_CONF_VARS['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processDatamapClass'])) 
{
			foreach 
($TYPO3_CONF_VARS['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processDatamapClass'] 
as $classRef) {
				$hookObjectsArr[] = &t3lib_div::getUserObj($classRef);
			}
*/

									
									
										// Check internals regarding access:
									if ($hasAccess)	{
										$hasAccess = $BE_USER->recordEditAccessInternals($table, 
$calcPRec);
										if($hasAccess==1)
											{

/*********** I would like this to use a hook - starts **************/
											if($BE_USER->user['admin']==0 && $calcPRec['editlock']==1)
											$hasAccess=0;


/*********** I would like this to use a hook - ends **************/
											}
											
										$deniedAccessReason = $BE_USER->errorMsg;
									}