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RichViewEdit.DocParameters property does not affect how documents are displayed. Its primary use is to save this information in RTF files (and in RVF files). TRVRuler cannot change them, because it's impossible (it cannot change page size, page margins and other DocParameters, because they are not d...

See http://www.trichview.com/forums/viewtopic.php?t=157

Yes, but after the next major update

No, the new RichView.SearchTextW is an Unicode version of RichView.SearchText, it does not introduce any new features and cannot search across item boundaries

What version of Delphi do you use?
As far as I remember, I created that Demo in Delphi 6.
Probably, something is different in other versions of Delphi.

This feature is supported by the ruler, but it is not supported by TRichViewEdit.
Sorry, it will not work.

In TRichView, document consists of items (text items, pictures, etc.). Items are indexed from 0 to rv.ItemCount-1. If the i-th item starts a new line, rv.IsFromNewLine(i) returns True. To keep text attributes, copy fragment either in RTF or (better) in RVF format. Other objects in the fragment (such...

I believe, if components on the panel have panel as an owner, they will be saved.
Here is the example: http://www.trichview.com/forums/viewtopic.php?t=251

OBJ files are placed in subdirectory. I do not exactly remember its name, but it seems it is either "Debug" or "Release", depending on the build mode.
Add this directory in the project options (or in the library paths for C++Builder)

It's not so simple to insert RichViewEdit in RichViewEdit, because:
- it has link to TRVStyle, and links are not saved in RVF;
- it does not save its document together with its properties.
This demo shows how to solve these problems: http://www.trichview.com/forums/viewtopic.php?t=2199

Do you use the latest TRichView version? There was a bug in loading RTF tables, when RTF file contains both tables with widths in % and fixed width.

Besides, tables really can be wider than page width.

It's possible to create undo class for addition in style collections.
But, other operations may add styles as well, and it would be not simple to remove styles added only be certain operations.
I do not think this is a big problem, because unused styles can be deleted by DeleteUnusedStyles method.

It's still not implemented

You may assign RichViewEdit1.OnWriteHyperlink := nil before saving the-no hyperlink file, and reassign it to the proper procedure when saving file with links.

TDBMemo uses standard edit control, so external applications must know how to get text from it. But TDBRichViewEdit is not a standard richedit control, so probably it will not work. It depends on how this software gets text from control. It may use window messages. If it uses WM_GETTEXT, it will not...