Here is some info I got off the web:

-------------------------------------------------------------------------
When merging two RTF strings, the different fonts used in string 2 must be 
added to the font table for string 1 and assigned a different ID. Then the text 
in string 2 must be changed to use this new ID. A RTF string can only have one 
font table. There is also a color table defined in a similar manner if 
different colors are used. Coding this will be quite a task.
------------------------------------------------------------------------

This is something which can be done in a language like c++ or vb, creating an 
RBASE plugin which will do the work, taking two varchars containing RTF strings 
and merging them, returning the result.

It is certainly not a trivial task, although not impossible by any means.

Ideally, in the RBASE environment, it would be pretty slick if the RTF control 
itself had an append property, and could do all the work itself.

A MergeRTF function would also be pretty slick.

In any case, this does give you an idea how this could be solved.
I wouldn't even attempt to do this kind of processing in raw RBASE code.

Dennis McGrath

 




-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Lawrence Lustig
Sent: Tuesday, July 14, 2009 5:18 PM
To: RBASE-L Mailing List
Subject: [RBASE-L] - Re: combine two blocks of RTF formatted VARCHAR data


<<
Worth exploring as long as I can do SRPL it may work.
>>


You cannot reliably operate on RTF text this way.  

Instead, you must rely on two RTF controls (they can be hidden) and an API that 
allows you to set the select position and select length, then cut or copy the 
selection, then position the select position in the target RTF field, then 
paste the text.

This API is not (currently) supported from R:Base, but I imagine you can do it 
with Windows messages with some research.
--
Larry


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