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How to change selection backcolor in a RichTextBox

Posted on 2002-06-28
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Last Modified: 2007-12-19
Is there a way to change the background color of selected text in a RichTextBox? There is the SelectionColor property, but it's the forecolor. The BackColor property changes the whole control.

I want something like the "Highlight text" feature of Microsoft Word, for VB.NET please.

Thanks.
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Question by:ricardog2
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6 Comments
 
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CJ_S earned 100 total points
ID: 7118264
You will need to work with selectedrtf

RichTextBox1.SelectedRtf = "{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\froman\fprq2\fcharset0 Times New Roman;}}{\colortbl ;\red255\green0\blue0;\red255\green0\blue255;}\uc1\pard\cf1\highlight2\f0\fs24 Mytext}"

It's pretty hard to get a grasp on though, but it will work once you get to know it well. i might have time available to do this automatically, but it'll take some time (and I'm leaving now)

CJ
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by:CJ_S
ID: 7118265
Easiest is to make it in Word -> copy to rtf field -> select that part -> msgbox(richtextbox.selectertf)

then copy the rtf code and use it to your likings.

CJ
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by:AzraSound
ID: 7119014
If you find no direct solution looking at the RTF codes generated by Word, take a look at this ocx with full source that implements this functionality via the rich edit library:

http://www.vbaccelerator.com/codelib/richedit/richedit.htm
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Author Comment

by:ricardog2
ID: 7119371
The first solution seems to be more flexible, because that custom control needs a lot of dependency files and it's written in VB6. The VB.NET RichTextBox class has everything I need except the selection backcolor.

I'll look at the RTF Specification to understand that RTF code better.

Thank you for your replies.
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by:AzraSound
ID: 7120059
I'm not sure how the .NET RichTextBox has been altered, but if it still is a wrapper around the riched*.dll then it may not support the RTF codes that specify selection backcolor.  That was an issue on several items, for me, when working with the VB6 richtextbox.  Things that were valid RTF codes, were not supported in the component (e.g., header/footer, page breaks, etc.)
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by:CJ_S
ID: 7120172
Azra,
Good to know!
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