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#1 Posted : Thursday, June 23, 2005 9:25:33 AM(UTC)

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Posts: 1

Hi, dear sir/lady,


We are a software company and developing a image scanning software. I tried to run the example from the Lead tool document in the following, and want t o use the default config of the scanner.But I always get a exception when program hit method of theTwain.FindFastConfig(). The exception is : Document Express capability is required to use this method/property. What is reason causing that? Thanks for your help.




theTwain.OnFastConfig += new LEAD.Drawing.Imaging.Twain.Twain.FastConfigDelegate(FindFastConfigEvent);

                   theTwain.EnableFastConfigEvent = true;

                   theTwain.UserFastConfigsCount = 0;

                   theTwain.FindFastConfig(@"c:\Twain", LEAD.Drawing.Imaging.Twain.Twain.UserInterfaceFastConstants.Show, LEAD.Drawing.Imaging.PixelFormatConverter.Convert(1), 0);


                   MessageBox.Show("FindFastConfig method was successfull");

                   MessageBox.Show("Result Scan Configs count = " + theTwain.FastConfigsResultCount.ToString());


                   MessageBox.Show("Transfer Mode = " + theTwain.FastConfigsResult[0].TransferMode.ToString() + "\n" +

                         "File Format = " + theTwain.FastConfigsResult[0].FileFormat.ToString() + "\n" +

                         "Buffer Size = " + theTwain.FastConfigsResult[0].BufferSize.ToString() + "\n" +

                         "Required Time = " + theTwain.FastConfigsResult[0].RequiredTime.ToString());


                   MessageBox.Show("Transfer Mode = " + theTwain.BestFastConfig.TransferMode.ToString() + "\n" +

                         "File Format = " + theTwain.BestFastConfig.FileFormat.ToString() + "\n" +

                         "Buffer Size = " + theTwain.BestFastConfig.BufferSize.ToString() + "\n" +

                        "Required Time = " + theTwain.BestFastConfig.RequiredTime.ToString(), "Result Scan Configurations...");


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#2 Posted : Sunday, June 26, 2005 8:26:49 AM(UTC)


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You need to call RasterSupport.Unlock Method at the beginning of
your program and pass in the correct unlock key to unlock the Document Imaging features.

Bashar Abdulqaiyume
LEAD Technical Support
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