TRichView.com

I confirm the problem in RVF insertion (not loading) methods when RVF file was saved with [rvfoUseStyleNames, rvfoSave***Styles] in RVFOptions (i.e. it contains collections of styles and style names are used instead of style indices), and inserted with [rvfoLoad***Styles] in RVFOptions (i.e ...

Confirmed: "sticking" options did not protect from Enter.
I fixed it, will be uploaded with the next update.

If you can press Enter at the beginning of text with "stick to top" protection, it is a bug, I'll fix it in the next update.

I thought that you want to disallow deletion of this paragraph. If not, exclude rvprDeleteProtect.

Can you load HTMLViewer and HTMLViewImporter packages in C++Builder 2006? The packages provided in my zip file generate both Delphi (dcu) and C++Builder (obj+hpp) files.

Well, really, if the user deletes all editable content, the caret will be in the first paragraph, and he/she will not be able to edit.

Try to use text protection instead of paragraph protection.
Include the following options in the Protection property of text style:
rvprStyleProtect ...

Please resend to richview at gmail com.
But exe files are not accepted even in zip or rar.

Still not received. If it has exe-file, please remove it, mail server rejects executables.

Sorry, I do not understand the question.
When the caret is in read-only paragraph (rvpaoReadOnly in Options), the user cannot do any editing operations - no typing, no delete, no backspace.
The only allowed editing procedure is pressing Enter at the beginning and at the end of this paragraph. If you ...

Make sure that RTFReadProperties.TextStyleMode and RTFReadProperties.ParaStyleMode are set to rvrsAddIfNeeded for the editor.
(Or, better, right click the editor in Delphi, choose "Settings" in the context menu, and make sure that "Allow adding styles dynamically" is set).
Besides, if you edit in ...

I did not study it yet, because TRichView does not support "at least" and "exactly" modes.
Obviously, "single", "double" are special cases of "multiple".

You still need to register it RegisterClass(TGifImage)

This problem happens because you have two TGifImage classes - from RxGif.pas and from GifImage.pas.
When you insert TGifImage, you insert GifImage.TGifImage, because GifImage is included in "uses" of your unit. But when pasting, RxGif.TGifImage is inserted (because it is registered with ...

Exe file will be rejected by the mail server (even in zip)

Actually, undo type (specified in BeginUndoGroup) is not used by TRichView itself. It can be read by UndoAction/RedoAction methods, and you can display its caption in undo/redo menu, like the demo Demos\Delphi\Editors\Editor 1\

RVE.TopLevelEditor.BeginUndoGroup(rvutInsert);
RVE.TopLevelEditor.SetUndoGroupMode(True);
try
if RVE.InsertPicture(...) then begin
RVE.SetCurrentItemExtraIntProperty(rvepImageHeight, ...);
RVE.SetCurrentItemExtraIntProperty(rvepImageWidth, ...);
RVE.SetCurrentItemExtraStrProperty(rvespAlt ...