Если, например, выделить таблицу и написать вот такой код,
|
1 2 3 |
... ShowMessage(richviewEdit1.GetCurrentItem.StyleNo.ToString()); ... |
то получим следующий результат
А всё дело в том, что каждый итем в TrichView обладает своим идентификатором. Код, который был написан выше позволяет определить этот идентификатор и сказать, например, таблица это или нет.
Приведу информацию с официального сайта.
There are three groups of rvs*** constants:
| ▪ | indices in the collection of text styles (RVStyle.TextStyles) corresponding to the initial entries; |
| ▪ | values used by TRichView internally when saving and loading RVF files (see RVF specification). |
Identifiers of Item Types
Use the first group of constants to compare with values returned by RichView.GetItemStyle or TRichViewEdit.CurItemStyle.
|
Constant |
Value |
Item Type |
Unit |
| rvsBreak | -1 | break (horizontal line) | RVStyle |
| rvsPicture | -3 | picture | RVStyle |
| rvsHotspot | -4 | hotspot (picture from ImageList – hyperlink) | RVStyle |
| rvsComponent | -5 | inserted Delphi control | RVStyle |
| rvsBullet | -6 | bullet (picture from ImageList) | RVStyle |
| rvsHotPicture | -10 | hot picture (picture – hyperlink) | RVStyle |
| rvsListMarker | -11 | list marker (bullet or numbering of paragraphs) | RVStyle |
| rvsTab | -12 | tabulator | RVStyle |
| rvsTable | -60 | table | RVTable |
| rvsLabel | -200 | label (non-text item looking like text) | RVLabelItem |
| rvsSequence | -202 | numbered sequence | RVSeqItem |
| rvsFootnote | -203 | footnote | RVNote |
| rvsEndnote | -204 | endnote | RVNote |
| rvsSidenote | -206 | sidenotes | RVSidenote |
| rvsTextBox | -207 | text boxes | RVSidenote |
| rvsNoteReference | -205 | reference to the parent note | RVNote |
| rvsPageNumber | -208 | “page number” field | RVFieldItems |
| rvsPageCount | -209 | “page count” field | RVFieldItems |
All these constants are negative so you can distinguish them from indices in the collection of text styles.
See also: RichView item types.
Indices in The Collection of Text Styles
The second group of constants is almost obsolete, because the status of these text styles is changed from “standard” (in older versions) to “initial”. You can completely customize collections of text styles by removing initial items and adding new items.
All these constants are defined in RVStyle unit.
|
Constant |
Value |
Suggested Using |
| rvsNormal | 0 | Normal text |
| rvsHeading | 1 | Heading 1 |
| rvsSubheading | 2 | Heading 2 |
| rvsKeyword | 3 | Keywords |
| rvsJump1 | 4 | Hypertext 1 |
| rvsJump2 | 5 | Hypertext 2 |
It’s still highly recommended to use the 0-th style as the default (normal) text. For example, this style is used as a default style in exported HTML files.
There is a special constant rvsDefStyle.
|
Constant |
Value |
Meaning |
| rvsDefStyle | MaxInt | “Use default text style” (deprecated!) |
This constant can be used as a StyleNo parameter for methods that add text in TRichView.
When this value is specified instead of the index in the collection of text styles, the paragraph’s default text style will be used.