This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.
#1
Posted
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Monday, October 5, 2009 1:40:53 AM(UTC)
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I am using LEADTOOLS Raster Imaging Pro 13.0
When I using the LEADTOOLS Delphi Demo, File --> Twain Acquire. It show the configuration setting for me to set the Resolution, Paper-Size, ...
Then, I use delphi 6 to develop a applciation to scanning a image using :
LeadTwain1.TwainAcquire(), then config setting page cann't show...
I would like to know how can I make the config setting page show?
terrence170985 attached the following image(s):
#2
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Monday, October 5, 2009 5:00:25 AM(UTC)
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To show the manufacturer's user interface, you need to pass "LTWAIN_SHOW_USER_INTERFACE" flag to the LEADTwain1.Acquire function as shown below:
LEADTwain1.Acquire( LTWAIN_SHOW_USER_INTERFACE );
#3
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Monday, October 5, 2009 4:27:02 PM(UTC)
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In Delphi6, I use the VCL component "LeadTwain" and does not have the method "Acquire", only have method TwainAcquire() with no parameter accept
...
var
LeadTwain1: TLeadTwain;
...
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#4
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Tuesday, October 6, 2009 3:45:15 AM(UTC)
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Sorry about that. My response was valid for version 14 of VCL, not 13.
In your version of the toolkit, you need to specify the value TWAIN_SHOWUI in the TwainFlags property of the Twain Control.
#5
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Wednesday, October 7, 2009 2:07:36 AM(UTC)
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Thank for your reply.
I can show the config setting page by setting the TwainFlags.
Now I have another problem, after scanning the image, I use vcl LeadImage for displaying the image the image, its work fine.
But, I would like to save the image to a physical file. So I call :
LEADImage1.Save(MyImageFilename, FILE_CCITT_GROUP4, 1, 50, SAVE_OVERWRITE);
I raise an exception with error code : -16 which mean that "Feature not support"
#6
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Wednesday, October 7, 2009 5:47:51 AM(UTC)
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In most cases, Error code -16 or "Feature not supported" error is generated when your application misses one or more of the needed DLLs you need to include with it. For example:
If you try to save TIFF with CCITT Group 4 compression files you need to include the LFTIF*.DLL and LTFAX*.DLL in your application path.
#7
Posted
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Wednesday, October 7, 2009 5:28:20 PM(UTC)
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Thank you for you reply, my problem solved...
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