[Gambas-user] print resolution issues

[Paul Horechuk]

I have a successful project that formats a sheet of labels on an Avery 
form and prints directly to an HP OfficeJet 7500 E910.

I set the printer width to 850 and length to 1100 with a resolution of 
100. These may not be correct for all (PrinterWidth and length are seen 
as 216 by 279mm), but by setting moveto coordinates within this range, I 
do get a correct sheet of labels.

Problems:

On a customer printer with the same version of gambas 3.5.4, the 
coordinates are stretched so that the labels are stretched by about 50%. 
This is on a Canon Pixma.

Further checking shows a print to file (as PDF) from the printer dialog, 
resulting in:

  *    vertical resolution is about 1/4 of what it should be
  *    fonts are correctly sized
  *    horizontal positioning is about 1/4 as well
  *    therefore all text is compressed into the upper left
  *    a QR code is about 1/4 the expected size


Changing the resolution for a direct print to Pixma has no effect. 
Changing from 100 to 75 or to 150, results in the same stretched 
printout. This works as expected on the HP.

Suggestions?

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