Are you applying that attribute via kEditTextStyleCmdBoss or equivalent? If not, consider to do that.
kGABaseline is what you need. In addition (see style edit dialog for an hint) you'll need kTAGridAlignOnlyFirstLineReportBoss - set the IID_ITEXTATTRBOOLEAN to true ...
Thanks a lot Dirk..It worked fine
I was looking for "kTAGridAlignOnlyFirstLineReportBoss" only...