Duplex printing bug

rbuser

Having recently ported an application from Delphi 5 + ReportBuilder 7 to
Delphi 2007 + ReportBuilder 10.06 I've found that the TppPrinterSetup.Duplex
property works as follows:

dpHorizontal prints vertically (book)
dpVertical prints horizontally (tablet)

In the old version it worked fine. That seems to me a bug, isnt'it?

--
Bruno Cuzzi
Metasoft Italy

nardmoseley

This has to be one of the most confusing properties defined by Windows.
Customers complained that prior versions of RB had it backwards.

The TppDuplexType enumerated type definition is now defined to be compatible
with Delphi's Windows.pas. I suspect that various printer drivers do not
implement support for the types consistently.

Windows API docs say....

DMDUP_VERTICAL - Long-edge binding, that is, the long edge of the page is
vertical.
DMDUP_HORIZONTAL - Short-edge binding, that is, the long edge of the page is
horizontal.

Delphi's Windows.pas defines the following constants...

{ duplex enable }
DMDUP_SIMPLEX = 1;
DMDUP_VERTICAL = 2;
DMDUP_HORIZONTAL = 3;

ReportBuilder's ppType.pas defines TppDuplexType as

TppDuplexType = (dpNone, dpVertical, dpHorizontal);

Therefore...

DevMode.dmDuplex := Ord(PrinterSetup.Duplex) + 1;



--
Nard Moseley
Digital Metaphors
www.digital-metaphors.com