How to update an already displayed Thumbnail?

[jriddell]

Howdy.

I am using GdPicture.NET Document Imaging SDK Ver. 7.4.6 (29 April 2011) running under Vs 2010.

I am writing your basic Document Viewer/editor for in-house use with your basic scrolled Thumbnails on the left and big GdViewer in the middle.

Suppose I have 5 images loaded. All 5 thumbs showing in the ThumbnailEx.
And my user is viewing thumb #3.

If the user does something where I want to change the "bitmap"/thumb that is displayed for thumb #3, how do I do that?

I see that thumbs have both ImageIds and indexes; and I can remove a thumb at a given index.
But if I do that, thumb #3 is removed and all others "move up". I don't want that.

I was looking for an API call like:

Code: Select all

 replaceImageAtGivenIndex( imageId as integer, index as integer)

Or maybe something like:

Code: Select all

 AddItemFromGdPictureImageAndReplaceAtGivenIndex( imageId as integer, index as integer)

I've tried:

Code: Select all

 SwapItemsBitmap(index1 as integer, index2 as integer) 

but it doesn't seem to do what I need.

How do I accomplish this???

thanks

[Loïc]

HI,

Currently we do not offer other way that:

- Insert new thumbnail
- Remove existing thumbnail
- Swap 2 thumbnails together.

We will investigate for a kind of replaceImageAtGivenIndex method in a GdPicture 8 release, but this will be done within 2 months.

Kind regards,

Loïc

[jriddell]

ok.

Could you more fully explain the "swap 2 thumbnails together"?

Will this somehow support the idea of updating the 3rd of 5 thumbnails with a different image WITHOUT reordering the thumbnails??

[Loïc]

Hi,

IE:

Code: Select all

Object.SwapItemsBitmap(1, 2)

Please have a look on the reference guide in the ThumbnailEx function. There is few functions are they are all documented.

Kind regards,

Loïc