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 ImageEn Library for Delphi, C++ and .Net
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 dpi scanning
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pierrotsc

USA
379 Posts

Posted - Sep 10 2019 :  12:38:39  Show Profile  Reply
Not sure if i am doing that correctly. I am using the scanning demo. When i have the scanner dialog showing up, i can pick the resolution i want to scan with. If i do not use the scanner dialog, i have the automatic acquire set at 300 dpi. That is perfect. now if i use the scanner dialog and pick 200 dpi, i guess the imagenmview has a 200 dpi thumbnail. How can i set a warning that the image scanned should be 300 ?
Is that possible.
Best

xequte

4714 Posts

Posted - Sep 11 2019 :  16:26:16  Show Profile  Reply
Hi

If you are acquiring with the scanner's dialog, then it is not possible to show a warning message (after the dialog), because the whole transaction is handled by the Twain driver.

Nigel
Xequte Software
www.imageen.com
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pierrotsc

USA
379 Posts

Posted - Sep 11 2019 :  20:59:12  Show Profile  Reply
thank you. i just wanted to know if it would be possible for you select the imageenmview to find out the dpi but it looks like imageenmview does not do that.
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xequte

4714 Posts

Posted - Sep 11 2019 :  21:51:22  Show Profile  Reply
Sorry, I may be misunderstanding your requirements.

You can get/set the DPI using ImageEnMView.MIO.AcquireParams.XResolution:

https://www.imageen.com/help/ImageEn/TIEAcquireParams.XResolution.html


Nigel
Xequte Software
www.imageen.com
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pierrotsc

USA
379 Posts

Posted - Sep 12 2019 :  08:56:34  Show Profile  Reply
Nigel, let me try to re explain. When i use the demo and i acquire using the showdialog, i get a thumbnail in the imagennmview component. Now when i select this image by clicking on it, i would like a dialog to pop up to show the resolution it was scanned. Is that possible ?
Thanks
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pierrotsc

USA
379 Posts

Posted - Sep 12 2019 :  10:56:41  Show Profile  Reply
Never mind. i reread your message and i think i got it.
Appreciate it
Best
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pierrotsc

USA
379 Posts

Posted - Sep 12 2019 :  11:42:35  Show Profile  Reply
Nope, i scan with the dialog at 360. i click on the image in imagenmview and it shows 300 and not 360. I wonder why. Advice ?

ShowMessage(FloatToStr(ImageEnMView1.MIO.AcquireParams.XResolution));
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xequte

4714 Posts

Posted - Sep 15 2019 :  17:37:47  Show Profile  Reply
Oh, sorry, I misunderstood.

The scanning DPI should be applied to the image DPI, so, for example, the DPI of the first image would be:

ImageEnMView1.MIO.Params[ 0 ].Dpi

https://www.imageen.com/help/ImageEn/TIOParams.Dpi.html

Nigel
Xequte Software
www.imageen.com
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pierrotsc

USA
379 Posts

Posted - Sep 16 2019 :  10:12:42  Show Profile  Reply
Just what i needed. thanks
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