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#1 Posted : Monday, February 13, 2006 7:58:06 AM(UTC)


Groups: Registered
Posts: 3

I would like to preset the size of the image being scanned by my application - not a user interface (set TwainUserInterfaceFlags.None).

For instance set the height to 2.25" and set the width  to 4"

this way the image will be precropped.


any ideas?


Thank Al




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#2 Posted : Wednesday, February 15, 2006 4:58:34 AM(UTC)


Groups: Manager, Tech Support
Posts: 367

Was thanked: 1 time(s) in 1 post(s)

It seems you are using LEADTOOLS.NET 14.

If that's the case, the following code, adapted from the help topic for the TwainFrame.RightMargin Property, should do what you want:

Dim twFrm As Leadtools.Twain.TwainFrame = New TwainFrame
Dim twCap As Leadtools.Twain.TwainCapability = New TwainCapability

twFrm.LeftMargin = 0
twFrm.RightMargin = 4
twFrm.TopMargin = 0
twFrm.BottomMargin = 2.25

twCap.Information.ContainerType = Leadtools.Twain.TwainContainerType.OneValue
twCap.Information.Type = Leadtools.Twain.TwainCapabilityType.ImageFrames
twCap.OneValue.ItemType = Leadtools.Twain.TwainItemType.Frame
twCap.OneValue.Value = twFrm

_twainSession.SetCapability(twCap, TwainSetCapabilityMode.Set)
_twainSession.MaxPagesNumber = 1

Amin Dodin

Senior Support Engineer
LEAD Technologies, Inc.
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