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Date Posted: 17:57:00 02/25/03 Tue
Author: Michel
Subject: Re: aquire error message
In reply to: peter 's message, "Re: aquire error message" on 14:03:06 02/25/03 Tue


Hi Peter,

Usually, there is not much I can do on these problems because I cannot reproduce them. One thing I did forget to mention, do not run your program from the Delphi IDE with debugging turned on. This can interfere with twain.

I have seen some scanner drivers that work in "test" mode without having to connect a physical scanner. If this is the case I may be able to try it out.

If the error is after the twain scanning itself, than it may be something else. Is the floating point error after the TScanner.Acquire call?

Best regards,

Michel



>>
>hello Michel
>
>I installed the demoversion 2, but still I am getting
>the same mistake
>
>regards
>
>peter
>
>>Hi Peter,
>>
>>The problem I was mentionning is actually a problem
>>with Delphi and the Trunc implementation affect
>>external DLL's like train drivers.
>>
>>
>>Version 1.1 does not use the new SafeTrunc. Can you
>>try it with the version 2 evaluation units? Let me
>>know if you still get the error.
>>
>>Best regards,
>>
>>Michel
>>
>>
>>>hello Michel
>>>
>>>I am using Envision Version 1.10 with Delphi 5.0
>>>Professional.
>>>The problem only accures when using Envision, when I
>>>use Micrograph Picture Publisher then there is no
>>>problem.
>>>Also the scanning in itself is no problem, only when
>I
>>>am making a prescan
>>>I am hoping for a soluton, as the application I made
>>>with envision works perfect
>>>The error message also accures when using the
>examples
>>>
>>>regards
>>>
>>>Peter
>>>
>>>rega
>>>
>>>>
>>>
>>>
>>>>Hi Peter,
>>>>
>>>>I have not seen this before. Which version of
>>Envision
>>>>are you using? One user has reported a strange
>>>>interaction between Trunc and some DLLs from twain
>>>>drivers. Version 2 uses a new SafeTrunc routine to
>>>>workaround this problem.
>>>>
>>>>I would also look into if you scanner has updated
>>>>drivers.
>>>>
>>>>Best regards,
>>>>
>>>>Michel
>>>>
>>>>>hi,
>>>>>
>>>>>when I make a prescan I get an error message
>>"invalid
>>>>>floating point operation"when the scan finishes
>>>>>
>>>>>the sanning in itself goes well
>>>>>
>>>>>have you got a solution
>>>>>
>>>>>peter

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