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Home » Community » Newbie corner » How to get pixels per millimeter for current screen?

Sun, 22 April 2012 21:48

BioBytes
Messages: 310
Registered: October 2008
Location: France

Senior Member

Hi,

If you're using Windows, a call to WinAPI32 is possible using the following code:

HDC screen = GetDC(NULL); 
int hSize=GetDeviceCaps(screen,HORZSIZE); int hRes=GetDeviceCaps

(screen,HORZRES); float PixelsPerMM=(float)hRes/hSize;// pixels per millimeter float

PixelsPerInch=PixelsPerMM*25.4; //dpi

GetDeviceCaps is a function that also gives information on printers resolution.

Regards Smile

Biobytes

		How to get pixels per millimeter for current screen? By: slashupp on Fri, 20 April 2012 11:47
		Re: How to get pixels per millimeter for current screen? By: BioBytes on Fri, 20 April 2012 22:01
		Re: How to get pixels per millimeter for current screen? By: slashupp on Sat, 21 April 2012 06:49
		Re: How to get pixels per millimeter for current screen? By: omari on Sat, 21 April 2012 10:29
		Re: How to get pixels per millimeter for current screen? By: BioBytes on Sun, 22 April 2012 21:48

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