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Print Pixel scale (200 Pts)

Posted on 1999-01-26
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Last Modified: 2010-04-06
Hi, you might answer this question in "How to print a StringGrid", where you will get 200 pts

I'm doing some textout to the printer.canvas, and having trouble specifing the y-offset for the next line. I'm printing from a stringgrid, and I thought that the rowheight could be the y-offset but on the printer.canvas this value must be around 2.5 larger or the lines are drawed on top of each other.
How to I get this const to multiply with stringgrid.rowheight, I sure it changes from printer to printer, depending on the paper and printer resolution.
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Question by:koger
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ZifNab earned 0 total points
ID: 1363420
Hi koger,

As I understand your question, then your looking for the difference of pixels between screen and printer? Correct?

If so, this should be a solution :

XPixelsPerInch := GetDeviceCaps(Printer.Handle, LOGPIXELSX);
YPixelsPerInch := GetDeviceCaps(Printer.Handle, LOGPIXELSY);

And screen.PixelsPerInch gives you the pixels per inch of your screen...

so devide these two and you get your constant...

or am I wrong?

Regards, Zif.
 
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by:koger
ID: 1363421
You are right go ahead and answer the other question to get your 200 pts ;-)
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