Re: Getting the text of an item using TCustomRVItemInfo

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Message

Martin Holmes

Posted: 07/06/2004 15:23:19

Hi Sergey,

Sergey Tkachenko wrote:

>>I'm still struggling to find a way to get the text. Perhaps I could

>>explain what I'm actually trying to do here. What I'm creating is a

>>footnote system, basically, and every time a footnote is inserted, I

>>need to find the number of the previous footnote so that I can determine

>>the appropriate number for the new one, and renumber any subsequent

>>ones. If there's a better way to do this, I'll be very glad to have it

>>pointed out to me, but at the moment all I can think of is to build an

>>index of items and move up and down the list, to find which ones have

>>the footnote style, then read or change their text (= footnote number).

>>I could store the footnote number in the tag for each item, but I'd

>>still have to display it in the text, and I'd still have to change it

>>for all subsequent footnotes, so I still have to be able to write the

>>text of the item.

> I understand, and I can give you a code to make this efficiently.

> What your footnote is? A special item type?

A footnote consists of three things:

1. Some text the user has chosen to associate with the footnote, by

selecting it before inserting the footnote. This is optional; if no text

is selected, it doesn't matter. The text is assigned a specific style

which includes underlining and a unique colour.

2. The footnote number. This is inserted into the text, and assigned its

own style (superscript, bold, and a unique colour).

3. The (WideString) footnote text, which is kept in a WideStringList (I

use Troy Wolbrink's Unicode libraries for WideString lists, controls and

other functions).

Because the footnote number style is only used for footnote numbers, I

was hoping that I could track and adjust footnote numbers in the text

just by iterating through the items and checking their style; when I

find something with the footnote number style, I know I have a footnote,

and if I can read its text too, I can get its number with StrToInt. I

have to handle embedded tables, though, so I wrote the code to build my

own list of pointers to items in the linear order they appear in the

text. I could also store the footnote number in the tag of the element,

but I would still have to change the number in the text when footnotes

are inserted or deleted.

Any suggestions you can offer would really be useful.

Cheers,

Martin