Register custom view templates from a module in Drupal 7.

endler-register-custom-view-tpl.php

<?php
/**
 * Implements hook_theme().
 *
 * Drupal 7 view template-ing from a module.
 * 
 * @author Justin Endler
 */
function mymodule_theme($existing, $type, $theme, $path) { 
  $module_path = drupal_get_path('module', 'mymodule');

  // Add to theme registry.
  // @todo the custom preprocess registration is ignored
  $themes['views_view_fields__myview'] = array(
    'template' => 'views-view-fields--myview',
    'path' => $module_path . '/theme',
    'base hook' => 'views_view_fields',
    'type' => 'module',
    'theme_path' => $module_path,
    'preprocess functions' => array(
      'template_preprocess',
      'template_preprocess_views_view_fields',
      'mymodule_preprocess_views_view_fields__myview',
    ),
  );
  
  return $themes;
}