ICAP_PHYSICALWIDTH

[nati]

Hello, since i can modifiy the maximum width and height that can be acquire by the source device if the capability ICAP_PHYSICALWIDTH and ICAP_PHYSICALHEIGHT aren´t MSG_SET allowed. Alone I want to scan a zone.

Thank you for your help.

[Kaij]

As you can not chance the physical dimensions of your scanner you can not chance ICAP_PHYSICALWIDTH. Please refer in the TWAIN spec to DAT_IMAGELAYOUT to setup the scan area.

Best regards,

Kaij
http://www.twaintools.com

[nati]

Hello,

I have tried this:

TwImageLayout til = new TwImageLayout();
TwRC rc = DSilay(appID, dsID, TwDG.Image, TwDAT.ImageLayout, TwMSG.Get, til);

til.Frame = new TwFrame();
til.Frame.Left = new TwFix32(0);
til.Frame.Right = new TwFix32(6.80f);
til.Frame.Top = new TwFix32(0);
til.Frame.Bottom = new TwFix32(4.20f);
rc = DSilay(appID, dsID, TwDG.Image, TwDAT.ImageLayout, TwMSG.Set, til);

but when I go Set rc es Failure. Why?

Thank you.

[Dark Angel]

Hi nati:

I am having the same problem I am setting the Frame by using the triplet
Control / ImageLayout / set

but I am always get return code (Failure)

I don’t know why I am trying to fix it rightnow

My scanner doesn’t support ICAP_Frames so I have to set the frame using
the past triplet

the code:

TWImageLayout imgLO = new TWImageLayout()

imgLO.Frame.Top = 0
imgLO.Frame.Left = 0
imgLO.Frame.Right = 2
imgLO.Frame.Buttom = 2

imgLO.PageNumber = 1
imgLO.Document = 1
imgLO.FrameNumber = 1

by the way sometimes it returns success and set the imagelayout structure to zeros and when I scan I get image with the maximum size
(rightnow I am doing these tests with twain toolkit)

If you interested maybe we can get this out together

thanks in advance

Dark Angel

[Author]

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