need help to display all the available Page Sizes for a scanner in VB6

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This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Monday, September 26, 2011 7:46:29 PM(UTC)

tthakur

Groups: Registered
Posts: 9

Hi,

I am using LeadTools Imaging toolkit v17 with VB6.
I need to display all the available Page Sizes (e.g. A3, A4 etc) supported by any perticular Scanner in a combobox.
could you please help me with some example, how can I do that?
As I am new to VB, it would be a great help if I get some code example on this.
Thanks,
Tameshwar Thakur


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#2 Posted : Wednesday, September 28, 2011 6:18:08 AM(UTC)

Maen Hasan

Groups: Registered, Tech Support
Posts: 1,326

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

You need to use the ICAP_SUPPORTEDSIZES (L_ICAP_SUPPORTEDSIZES) twain capability with the QueryCapability method (ILEADRasterTwain).

Code is:
+------+
Dim nRet As Integer
Dim TwainCap As New LEADTwainCapability_U

RasterTwain2.EnableMethodErrors = False
RasterTwain2.EnableTwainEvent = True

TwainCap.CapInfo.ConType = L_TWON_ENUMERATION
TwainCap.CapInfo.Capability = L_ICAP_SUPPORTEDSIZES

nRet = RasterTwain2.QueryCapability2(TwainCap)

Dim n As Integer
For n = 0 To TwainCap.CapEnum.EnumNumOfItems - 1
MsgBox "value " & n & " = " & TwainCap.CapEnum.EnumCapValue(n).LongValue
Next

Set TwainCap = Nothing
+------+

Values are documented in the Twain specification document from the Twain Working Group in the section about ICAP_SUPPORTEDSIZES values.

Thanks,
Maen Badwan
LEADTOOLS Technical Support

#3 Posted : Wednesday, September 28, 2011 8:24:12 PM(UTC)

tthakur

Groups: Registered
Posts: 9

Thanks a lot Maen. It really helped.

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