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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(169.60000000000002, 70%, 26%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EP%3C/text%3E%3C/svg%3E)
Hello,
I would like to print on two-sided (duplex),
the complete code is here, can you reproduce it ?
but my HP printer prints one sided.
I allocated the correct size of buffer.
like refer to the Doc:Modify printer settings with the DocumentProperties() Function
Thanks
You don't use the returned DEVMODE
As MSDN says :" The resulting DEVMODE that is returned to the caller is suitable for other API calls that use DEVMODE buffers such a CreateDC(), SetPrinter(), PrintDlg(), or ResetDC().
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(262.40000000000003, 40%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EP%3C/text%3E%3C/svg%3E)
That's is trange, I set the printer property default in Wondows > Parameters > Printers to be duplex but the printer print one sided ???
And if you print a 2 pages PDF with Adobe Acrobat Reader in Duplex (checked in the Dialog Box) ?
DocumentProperties(NULL
hPrinter,
pDevice,
pDevMode, /* Reuse our buffer for output. */
pDevMode, /* Pass the driver our changes. */
DM_IN_BUFFER | /* Commands to Merge our changes and */
DM_OUT_BUFFER); /* write the result. */
Le DEVMODE is passed to DocumentProperties() which is stored in the spool file.
but it's ignored by « Hp Smart Universal Printing » driver...