RegisterMimeRenderer(HKEY("text/calendar"), render_MIME_ICS_TPL, 1, 501);
RegisterMimeRenderer(HKEY("application/ics"), render_MIME_ICS_TPL, 1, 500);
RegisterMimeRenderer(HKEY("text/calendar"), render_MIME_ICS_TPL, 1, 501);
RegisterMimeRenderer(HKEY("application/ics"), render_MIME_ICS_TPL, 1, 500);