EM_SETCHARFORMATand SCF_SELECTION blocks rich editor behavio

[sancit]

Thanks for your reply..

But setting EM_SETEVENTMASK also didn't succeed.

I read some articles where it has been stated that formatting the characters using EM_SETCHARFORMAT for a particular selection corrupts the UNDO buffer.

I guess the formatting steps are loaded into the UNDO buffer which corrupts the buffer.

Is there any way where i can stop loading the UNDO buffer while formatting and than again start loading the buffer after formatting?