Hi I have created a custom button link in the admin section of my component, something like this:
$bar = & JToolBar::getInstance('toolbar');
$bar->appendButton( 'Link', 'export', 'Export', 'index.php?option=com_component&task=export&format=raw' );
However no image is assigned to it and I don't know how to assign one to the button. Does anyone know how I can do this?