core-bundle/src/Resources/contao/dca/tl_templates.php
public function dragFile($row, $href, $label, $title, $icon, $attributes)
	{
		return '<button type="button" title="'.Contao\StringUtil::specialchars($title).'" '.$attributes.'>'.Contao\Image::getHtml($icon, $label).'</button> ';
	}
public function dragFile($row, $href, $label, $title, $icon, $attributes)
	{
		return '<button type="button" title="'.Contao\StringUtil::specialchars($title).'" '.$attributes.'>'.Contao\Image::getHtml($icon, $label).'</button> ';
	}
Return the drag file button

@param array  $row
@param string $href
@param string $label
@param string $title
@param string $icon
@param string $attributes

@return string