7 calls to _form_set_class()

theme_checkbox in drupal-6.x/includes/form.inc
Format a checkbox.
theme_file in drupal-6.x/includes/form.inc
Format a file upload field.
theme_password in drupal-6.x/includes/form.inc
Format a password field.
theme_radio in drupal-6.x/includes/form.inc
Format a radio button.
theme_select in drupal-6.x/includes/form.inc
Format a dropdown menu or scrolling selection box.
theme_textarea in drupal-6.x/includes/form.inc
Format a textarea.
theme_textfield in drupal-6.x/includes/form.inc
Format a textfield.