Re: Pixel to inch

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#7690

From: Bob Gonder
Date: Sat, 08 Jan 2005 19:20

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Thomas J. wrote:

>I want to print a bar code but  unfortunately the barcode API works with 
>�nch or millimetre.
>How can calculate from pixel to inch or millimetre?
>
>Thanks for your help 

See	GetDeviceCaps()
With the HORZRES  and the HORZSIZE  (or the Vert versions)

HORZSIZE = page width in mm.
HORZRES = page width in pixels.

	mm = GetDeviceCaps( hPrinter,HORZSIZE);
	pix =  GetDeviceCaps( hPrinter,HORZRES);
	pixpermm = pix / mm;
	pixperinch = (pix * 254) / (mm*10);

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From: Bob Gonder <notbg@notmindspring.invalid>
Newsgroups: borland.public.cppbuilder.nativeapi
Subject: Re: Pixel to inch
Date: Sat, 08 Jan 2005 11:20:20 -0800
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