|  Editing in TRichView | |
Several editing features in TRichView deserve a special mention: undo/redo, protected text, and drag and drop.
Undo and Redo
All operations in TRichViewEdit can be undone and redone. The undo buffer can contain a virtually unlimited number of operations for undo and redo.
You can undo typing, insertion and deletion of contents, operations on tables, etc.
Protected Text
Text protection is very flexible in TRichView. You can:
- protect text from modifying (but it still can be deleted as a whole),
- protect text from deleting (but it still can be modified),
- protect text from modifying and deleting,
- disallow insertion between two text fragments,
- make whole paragraphs read-only, and more...
Drag and Drop (VCL)
TRichView uses system (OLE) drag&drop interfaces. You can drop files from Windows Explorer, a hyperlink from a web browser, and rich text to and from Microsoft Word.
TRichViewEdit accepts data in the following formats:
- RVF (internal format)
- RTF (Rich Text Format)
- text (ANSI or Unicode)
- hyperlinks (both target and title, if available)
- images (bitmaps, DIB, metafiles)
- files (RVF, DocX, RTF and text files and images are inserted automatically; you can write a code for inserting files in custom formats)
TRichView provides data in the following formats:
Drag and Drop (FireMonkey)
TRichView uses FireMonkey drag&drop feature.
TRichViewEdit accepts data in the following formats:
- text
- images
- files
- data dragged from another TRichView or from itself (usually in RVF format)
For other types of FireMonkey controls, TRichView provides data in the following formats:
- text
- image (if an image is dragged)
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