I made a very simple Report a few years ago for Karen that manipulated RTF
or rather converted regular text to formatted text by adding the formatting
info to the regular text and then concantenating the whole mess by adding
the file header info and closures. You will find a whole bunch of info
about this subject and you're correct, it's non-trivial, but making a plugin
to do it is OK, but it is still a kludge. The right approach is to expose
the methods and properties of the RichEdit to allow direct manipulation at
the developers descretion.
----- Original Message -----
From: "Dennis McGrath" <[email protected]>
To: "RBASE-L Mailing List" <[email protected]>
Sent: Wednesday, July 15, 2009 9:59 AM
Subject: [RBASE-L] - Re: combine two blocks of RTF formatted VARCHAR data
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
