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Date Posted: 06:47:07 05/11/04 Tue
Author: Michel
Subject: Re: rowsperstrip
In reply to: Peter Rettig 's message, "Re: rowsperstrip" on 15:18:48 05/06/04 Thu

Hi Peter,

Sorry, there is probably not much I can do about this. It must be the libtiff library that uses a maximum of 7f ff ff ff.

Best regards,


>Hi Michel,
>I have tried this but the result is not OK.
>The highest value for RowsPerStrip is 7F FF FF FF.
>If I tried to set a higher value the tag was not
>Best regards,
>>Hi Peter,
>>I thought MaxLongInt would be enough as a maximum. Try
>>removing the call to BoundInteger and make the
>>parameter a DWord in SetRowsPerStrip. Let me know how
>>it goes, if it works I will change the code base.
>>Best regards,
>>>normally there is no need to set a specific value for
>>>the tag RowsPerStrip!
>>>Unfortunately german National Health Insurances use
>>>the TIF G4 format for dataexchange of prescriptions
>>>and there is a new regulation to use only FF FF FF FF
>>>for this value :-(
>>>>I really need to learn rowsperstrip means of TIF G4
>>>>files. Why do you set a value? How to decide the
>>>>I have some problems.
>>>>>Hi Michel,
>>>>>yes that is OK.
>>>>>But for some reasons I have to create TIF's with FF
>>>>>FF FF as value for RowsPerStrip. With MaxInt there
>>>>>only 7F FF FF FF. Is there any way to create
>>>>>like this?
>>>>>Best Regards,
>>>>>Peter Rettig
>>>>>>Hi Peter,
>>>>>>MaxLongInt is 2147483647. Try with that value or
>>>>>>smaller for RowsPerStrip. You do not need to
>>>>>>the package as it is only used at design time.
>>>>>>change the .Pas file.
>>>>>>Best regards,
>>>>>>>Hi Michel,
>>>>>>>I have changed the file entifgr.pas like
>>>>>>>compiled. I have changed the files EnTifGr.dcu,
>>>>>>>En_D4.dcu, En_D4.dcp, En_D4.bpl. But the result
>>>>>>>procedure TForm1.Button1Click(Sender: TObject);
>>>>>>> DestGraphic : TTiffGraphic;
>>>>>>> i, j: longint;
>>>>>>> j :=
>>>>>>> DestGraphic := TTiffGraphic.Create;
>>>>>>> DestGraphic.Compression := tcGroup4;
>>>>>>> DestGraphic.Assign(ImageScrollBox1.Graphic);
>>>>>>> DestGraphic.RowsPerStrip := 4294967295;
>>>>>>> DestGraphic.SaveToFile(FilenameEdit1.FileName +
>>>>>>> for i := 2 to j do begin
>>>>>>> end;
>>>>>>>Can you advice?
>>>>>>>Best regards,
>>>>>>>>Hi Peter,
>>>>>>>>This has been corrected in the latest code base.
>>>>>>>>now limited to MaxLongInt, about 2Gig. The code
>>>>>>>>procedure TTiffGraphic.SetRowsPerStrip( const
>>>>>>>>InRowsPerStrip : LongInt );
>>>>>>>> FRowsPerStrip :=
>>>>>>>>Let me know if you have problems. This change
>>>>>>>>in the next version.
>>>>>>>>Best regards,
>>>>>>>>>I tried to save a TIF-image with 4 294 967 295
>>>>>>>>>FF FF) rowsperstrip. But the highest accepted
>>>>>>>>>this property semms to be 4095!?
>>>>>>>>>Is there a way to support larger values?
>>>>>>>>>Best regards,

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