Re: DocumentView confusion

[Lee <t.lee.davidson@xxxxxxxxx>]

On 11/12/25 12:26 PM, gbWilly wrote:
> On attached image you can see code run during a scroll of the mousewheel to retrieve on what page of a loaded pdf in a 
> DocumentView is shown.
>
> DocumentView.png
>
> There are 4 properties that I would like to discuss as they are, at least, confusing. I'm talking about:
> - FirstVisibleDocument (Return the number of the first visible page in the viewer.)
> - FirstVisiblePage (Return the index of the first visible page.)
> - LastVisibleDocument (Return the number of the last visible page in the viewer.)
> - LastVisiblePage (Return the index of the last visible page.)
>
> To my understanding of the matter (correct me where I'm wrong), the index is 1 lower that the actual page number (shown on the 
> DocumentView by setting its ShowPage property to True)
> Page 1 -> Index 0
> Page 2 -> Index 1
> Page 3 -> Index 2
> ...
[snip]
> In short:
> Both First.. properties return the index
> Both Last... properties return the page number
> ...VisiblePage talks about index in wiki
> ...VisibleDocument talks about number in wiki
>
> Something is off (Gambas 3.19.6), please enlighten me..
>
> gbWilly
>
> GambOS <https://gambos.gambas.one/>
> Gambas3 for Debian/Ubuntu <https://gitlab.com/gbWilly/gambas3-debian-repository>
> <https://gambos.gambas.one/>
>
> *...there is always a Catch if things go wrong!*
>
> Sent with Proton Mail <https://proton.me/mail/home> secure email.

I thought I might investigate this but ......

How in the world does one load a document into DocumentView?


--
Lee

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