TRichView.com

Change
Tag := PChar(RV_CampoTexto.GetItemTag(ItemNo));
to
Tag := PChar(RVData.GetItemTag(ItemNo));
(your code will not work if the link is in table cell).

Make sure that rvoTagsArePChars is included in RV_CampoTexto.Options.

Well, yes, calling Format saves the situation for TRichViewEdit (because it adds one empty text item). But not for TRichView, so it may be really considered as a bug. Fix: open RVLinear.pas, change RVGetTextLength: function RVGetTextLength(rv: TCustomRichView): Integer; begin Result := 0; if rv.Item...

Actually, DBRichViewEdit->CanChange() calls table->Edit(). Calling CanChange() & Change() is required only if DBRichViewEdit was modified using non-editing methods (such as Load** or Add*** methods). CanChange() & Change() are not required if the document was modified using editing methods (...

Sorry, it's not possible.
If one operation is not written in undo list, all records in undo list made before this operation become invalid.

Please send me this document saved as RVF file.

not supported in TRichView or TRichViewEdit, only in TRVPrintPreview.

TPoint ClientCoords = ctrl->ClientToParent(Point(0,0), RichViewEdit1); TPoint DocCoords = RichViewEdit1->ClientToDocument(ClientCoords); But it will not help you with printing, because a position on page is not a position on screen. If you want to customize printing, process RVPrint->OnPrintComponen...

Copying may be really very slow if document contains multimegabyte text.
In the current version, it can be improved only by modifying VCL source (changing MemoryDelta from Classes.pas to lager value (power of 2)). In the next update, this problem will be fixed without modifying VCL source.

Does this problem persist if you include RVGifAnimate.pas in the project, and change RV->AnimationMode to rvaniOnFormat?

The most reliable way is checking if this image is already in the list.

No, just another work (many small changes and bug fixes) distracted me from this problem.

Does it really crash? It just may take very long time. It's because a standard TMemoryStream is used. TMemoryStream is unefficient when writing a large amount of data, because many memory reallocations occur. In the next update, TRichView will use another stream class, with larger memory delta. Copy...

"Inserted" is called every time when the item is moved to another document (i.e. another RVData). This includes moving to cell inplace editor and back to the cell (it happens on selection).
So it is by design.

Yes, it can be used for TRichViewEdit too.

PS: I just modified it to take tab characters into account. Line breaks are still not counted.

?
OnItemAction with rviaInserted is called when the item is already inserted in the list of items of RVData, and its index in this list is known.