Displaying one GdViewer region in another GdViewer

[GdPictureT]

I am probably missing something really obvious but I am still new to this and am stuck so I thought I should write this.

I have 2 GdViewers and the first viewer displays a full-sized large image from a disk file. I have managed to create a visible mouse-clicked selection rectangle within the first viewer by using the SetRectCoordinatesOnDocument method. It works well.

What I want to do is then take that selection and display it within another GdViewer. However, I would like the original document's pixel coordinates to be held within this image so that I can click and produce global coordinates from it.

I have played with many options including using the clipboard or cloning a region but the result is either too slow or loses the original coordinates.

Could someone kind please point me in the right direction?

Many thanks !

[Loïc]

Hi GdPictureT,

I am not sure to understand what you need.

What I understood is you want to capture the selected area of a GdViewer1 object in a GdViewer2 object ?

Am I right ?

Kind regards,

Loïc

[GdPictureT]

Hi Loic,

Thanks for the reply.

Well you will have to go easy with me as I'm new to programming unfortunately. I am trying to have two displays on a form with 1 showing a full image file and 1 only showing a reduced size (centered as clicked on the first image).

The first full image Gdviewer I have loads straight from disk with:

FullImageID = GdPictureFull.CreateGdPictureImageFromFile(bmpFilename)

GdViewer1.DisplayFromGdPictureImage(FullImageID)

Then via the GdViewer1.GetMouseLeftInDocument statement I have defined a region with SetRectCoordinatesOnDocument . All is well there.

I really just can't workout the best way to display this defined rectangular image in GdViewer 2 while keeping original coordinates?

[Loïc]

Hi,

I think this can do the trick:

Code: Select all

      Dim Left, Top, Width, Height As Integer

      GdViewer1.GetRectCoordinatesOnDocument(Left, Top, Width, Height)

      Dim GdPictureImaging1 As New GdPictureImaging()

      Dim ImageArea As Integer = GdPictureImaging1.CreateClonedGdPictureImageArea(FullImageID, Left, Top, Width, Height)

      GdViewer2.DisplayFromGdPictureImage(ImageArea)

Kind regards,

Loïc

[GdPictureT]

Well that works fine and is fast but when I use GdViewer2.GetMouseLeftInDocument it still only gives me the small coordinates and not the global ones.

I guess I could pull the coordinates out somehow but I seem to remember getting them directly out through GdPictureImaging when I used the clipboard ?

[GdPictureT]

Well I got them out another way in the end. I do like GdPicture Imaging.

Thanks for the help Loic!

[Loïc]

ok

Thank you for the update on this.

Cheers!

Loïc