[Gambas-user] Landscape printing in PDF goes wrong

[Rolf-Werner Eilert]

Am 19.12.18 um 15:03 schrieb Gianluigi:
> 
> 
> Il giorno mer 19 dic 2018 alle ore 11:43 Rolf-Werner Eilert 
> <rwe-sse at osnanet.de <mailto:rwe-sse at osnanet.de>> ha scritto:
> 
>     Am 18.12.18 um 16:56 schrieb Rolf-Werner Eilert:
>      > In one of my programs which ran flawlessly under Suse Leap (KDE
>     and Qt),
>      > I have a serious fault of printing functionality under my new
>     Ubuntu Mate.
>      >
>      > Instead of printing Landscape, it prints Portrait, but
>     landscape-wise on
>      > the paper, i. e. upright. If I would print it, it would be ok,
>     but the
>      > positions on the sheet are wrong. It looks like being measured
>     for A5
>      > instead of A4.
>      >
>      > This is Gambas 3.11.4. Have you changed anything in the printing
>     part
>      > which would influence measuring positions etc.? Something during
>     the few
>      > last versions; on the Suse system I had a bit older version.
>      >
>      > Or is there something wrong here?
>      >
>      >    drucker = New Printer As "drucker"
>      >
>      >    drucker.Orientation = Printer.Landscape
>      >    drucker.Paper = Printer.A4
>      >
>      >    drucker.OutputFile = druckPlanDatei
>      >
>      >    drucker.FullPage = True
>      >
>      >    drucker.Print() ' -> drucker_Begin()
>      >
>      > Thank you for any input!
>      >
>      > Regards
>      > Rolf
>      >
> 
> 
>     I have to answer myself as I have found a way to work around the wrong
>     measurement. Sizes are ok now, but the print is still not turned by 90°
>     for Landscape.
> 
>     The whole thing is somewhat strange as I use the same code in another
>     program to compute the positions for printing.
> 
>     How do you calculate mm to printing pixels?
> 
>     Regards
>     Rolf
> 
> 
> Sorry but now I have no time, it's something I had done years ago is in 
> Italian, I hope can help you.
> 
> Regards
> Gianluigi
> 
> 
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> 

Happy New Year guys!

Just FYI, purely coincidentally I found the solution: It depends on the 
graphical libraries you bind your project to.

In this project, I had gb.gui, and that didn't work out correctly 
(myPrinter.Resolution delivers a faulty value). In another project, I 
had gb.qt4 instead, and it runs flawlessly.

When I changed to gb.qt4, calculation was correct again.

Regards
Rolf