If you want to add new settings under Downloads --> Add New --> Lock Options --> Enable Email Lock , you can use this hook.
One parameter is passed to this hook.
To add new settings under Email Lock section in Add New/Edit Package page.
<?php add_action('wpdm_custom_form_field','wpdm_ask_for_custom_data',10,1); ?>
<?php
add_action('wpdm_custom_form_field','wpdm_ask_for_custom_data',10,1);
function wpdm_ask_for_custom_data($pid)
{
$cff = get_post_meta($pid, '__wpdm_custom_form_field', true);
$idl = get_post_meta($pid, '__wpdm_email_lock_idl', true);
if (!$cff) $cff = array();
?>
<table>
<tbody>
<tr>
<td><label><input checked="checked" name="" type="checkbox" value="1" /> <?php _e("Ask for Visitor's Name","wpdmpro");?></label>
<hr noshade="noshade" size="1" />
After submit form: <label><input id="idl" checked="checked" name="file[email_lock_idl]" type="radio" value="0" /> Mail Download Link</label>
<label><input id="idl" checked="checked" name="file[email_lock_idl]" type="radio" value="1" /> Downlaod Instantly</label>
</td>
</tr>
</tbody>
</table>
?>
<?php
}
?>
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