how do i alter comments and comment form I am trying to change the way comments are displayed in drupal 7 for a specific content type. I am using garland theme. Ideally I would like to modify comment display in my module as opposed to doing it in the theme. 

I have successfully implemented hook_form_comment_form_alter to hide the author name this way:

function mymodule_form_comment_form_alter(&amp;$form, &amp;$form_state, $form_id) {
  //  krumo($form_id);                                                   
  switch($form_id) {
    case 'comment_node_mycontenttype_form':
      hide($form['author']);
      break;
  }
}


Now I would like to alter the comments to: 


Hide the comment title link
Hide the "reply delete edit" links


I tried to implement hook_comment_view_alter() and hook_node_alter() but these seem not to get called. When I use the following code, nothing happens (no krumo outputs and no modifications).

function mymodule_comment_view_alter(&amp;$build) {
  krumo($build);
}




function mymodule_node_alter(&amp;$build) {
  krumo($build);
  hide($build['links']['comment']['#links']['comment-reply']);
}


The only way I found was to modify garland_preprocess_comment() in template.php in garland theme. But this applies to all content type and also I would like to have all my code in my module. 

Is there a proper way to do this? 

How come hook_comment_view_alter() and hook_node_alter() don't seem to get called?

Note I am using panels to add my content. So I have added the comments and the comment form using panels module. Therefore there is no field to toggle "allow comment title" as there is in structure->content type->comment settings. Even though the "allow comment title" field is unchecked, titles are still displayed. it seems like panels overrides this setting somehow.
To put this in my module I actually just did put the following code in my module:

function mymodule_preprocess_comment(&amp;$vars) {
$vars['submitted'] = $vars['created'] . ' — ' . $vars['author'];
switch( $vars['node']-&gt;type )
 {
 case 'myContentType':
 $vars['title'] =FALSE;
 $vars['content']['links']['comment']['#links']['comment-reply'] = FALSE;
 $vars['content']['links']['comment']['#links']['comment-edit'] = FALSE;
 $vars['content']['links']['comment']['#links']['comment-delete'] = FALSE;
 break;
 }
}