TRichView.com

I cannot reproduce this problem. Please send me an example of RVF file

Try to save the resulting file as RVF instead of RTF (make sure that these RVFOptions are included in the second TRichView too).
If this RVF file will have the same problems as RTF, the problem was in the first step.

1) Yes, it is correct, references to TMemoryStream must be changed to TRVMemoryStream. RVClasses must be added in "uses" of RVXML units that use TRVMemoryStream. 2) I believe the linker problems disappear when you restore RVXMLCB6.bpk from the installation. I suppose you saved the package ...

I am afraid it would be difficult to do, RVHtmlImport does not support buttons. And that code do you want to execute on clicking, JavaScript?

Sorry, I do not undestand your code.
What does ms.SaveToStream(ms) mean?

Do you want to load HTML source code in rvesource and set it to stringgrid? Why not to use StringGrid.Cells[0,0] := memo1.Text?

TRVFontSizeComboBox shows font sizes only after its FontName property is assigned. It shows only font sizes available for the given font (or a predefined set of sizes fo TrueType fonts)

Please send this RTF file to me by e-mail

Make sure that [rvfoSaveTextStyles, rvfoSaveParaStyles] is included in RVFOptions of TRichView that saves RVF.

In order to use GlyFX unit, open RichViewActions.pas and remove the dot from {.$DEFINE USEGLYFX}. If you have references to dmActions unit from YOUR units' "uses", delete them.

I thought that just having these actions is enough. I'll test when I return.

Make sure that you deleted files of the previous (trial) version of trichview - all dcu, obj, hpp files.
RvXml package must be rebuilt after updating trichview

Use richview.SaveHtmlToStream or SaveToStreamEx to save document to TStringStream.

Do you load document by rvhtmlimporter from some string? Why not to use this string to assign to the stringgrid cell? I do not remember if it supports multiline text, though.

this code will work properly only if the both editors are linked to the same rvstyle (or to rvstyles with the same collections of styles). Table.SaveToStream only saves the fact what the first item in the cell has the 5th style. But properties of this style are not saved. If in the destination edito...

No, it always makes the selection visible. But you can block any redrawing in the editor. In the newest trichview version, you can use BeginUpdate and EndUpdate methods.