| T O P I C R E V I E W |
| aleatprog |
Posted - Jul 22 2019 : 02:38:19
In the TwainDemo, available scanning devices are listed using TwainParams.SourceCount:
for i := 0 to ImageEnView1.IO.TwainParams.SourceCount - 1 do
ComboBox1.Items.Add( String( ImageEnView1.IO.TwainParams.SourceName[i] ));
Compiled in 32bit the demo works fine, in 64bit the list is empty because the above mentioned code had been ignored. May you reproduce it?
Is this caused by some property of the driver or is TwainParams.SourceCount working only in 32bit?
Al |
| 3 L A T E S T R E P L I E S (Newest First) |
| xequte |
Posted - Jul 25 2019 : 04:33:48
Hi Al
Yes, it works correctly on our test system.
Nigel
Xequte Software
www.imageen.com
|
| aleatprog |
Posted - Jul 23 2019 : 13:29:54
Hi Nigel,
I chose the term "ignored" as in debug mode the above code is skipped/jumped/not processed while pressing F8. And, yes, as I wrote, probably it's due to some driver property. Did the TwainDemo worked well on your side in 64bit?
Meanwhile, I connected the same scanner using WIA which works perfect in 64bit.
Al |
| xequte |
Posted - Jul 22 2019 : 22:05:36
Hi Al
What makes you say the code is "ignored". The Twain code is compiled in both 32 and 64bit modes.
More likely you are seeing an absence of Twain drivers. Many manufactures do not bother including 64bit Twain drivers (usually they only include WIA drivers).
If you need to test 64bit Twain support, you can use the FreeImage Software scanner driver:
https://sourceforge.net/projects/twain-samples/files/TWAIN%202%20Sample%20Data%20Source/
Nigel
Xequte Software
www.imageen.com
|
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