Hi,

I forgot to mention that after the selection I add
HTML codes to the selection, then replace the editbox
with the changed text.

Here is a sample code where you can demonstrate
this behaviour. First, you must create a form where
there is a EditBox field (named "EditBox1") and a
command button, which performs the following code
(adding "bold" HTML codes):

*----------------------------------------------------*

* This happens when user has clicked the "Bold"
* button -> HTML "bold" codes are added to the
* selection

* user has written something to the EditBox
loTEXT = THISFORM.EditBox1

* selected text properties
lcSELTEXT = loTEXT.SelText
lnSELSTART = loTEXT.SelStart
lnSELLENGTH = loTEXT.SelLength

* here I checked what the lcSELTEXT variable
* contains:
messagebox(lcSELTEXT)

* and here I added some HTML to the selection:
lcNEWTEXT = ''+lcSELTEXT+''

* now the editbox is filled with the changed text:
THISFORM.EditBox1.Value = ;
stuff(THISFORM.EditBox1.Value,lnSELSTART,lnSELLENGTH,lcNEWTEXT)

*---------------------------------------------------------------*

When I tested this, I first wrote the following text
to the editbox:

this is the first row
this is the second row
this is the third row

Then, I selected the words "second row". The lcSELTEXT is correct
and the changed text looks like this (notice the extra "w"):

this is the first row
this is thesecond roww
this is the third row

When I after this add a fourth row:

and this is the fourth row

and then select the word "fourth", the lcSELTEXT variable
contains: "urth r"

and the text is changed this way:

this is the first row
this is thesecond roww
this is the third row
and here is the furth rrow