Using outparameters to get the dialog information with the paintDialog
call was quite confusing.

Change-Id: Ief331b251dc66e66084b827ce5b025ba6c9ce7d2
Reviewed-on: https://gerrit.libreoffice.org/44473Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: pranavk <pranavk@collabora.co.uk>