🚀 go-pugleaf

I wonder if this stuff is necessary. If the printer has the duplex
capability and it is enabled then why would I need to use this process to
change the setting - it will already be enabled!
I think I will just experiment with teh NewPage(), StartPage() EndPage()
techniques

John

"John Scott" <jscott@kw.igs.net> wrote in message
news:3fcf5268$1@newsgroups.borland.com...
> I guess I was confused. The help for the TPrinter object shows the
> GetPrinter() method as using a pointer to a DEVMODE as the last parameter.
> Retrieves information about the current printer.
>
> void __fastcall GetPrinter(char * ADevice, char * ADriver, char * APort,
int
> &ADeviceMode);
>
> Description
>
> Call GetPrinter to obtain information about the current printer.
>
> ADevice is a buffer that receives the device name of the current printer.
> This is the name that appears in the Print Manager (for example, "Epson
> FX-80"). It is not the printer model name.
>
> ADriver is a buffer that receives the driver name for the current printer.
> Some versions of Windows do not use printer driver names, in which case
this
> buffer is unused. On versions of Windows that support printer driver
names,
> this is the name of a printer driver (usually '
> WINSPOOL').
>
> APort is a buffer that receives the port used by the current printer. It
is
> not used on 32-bit versions of Windows, but is included for backward
> compatibility.
>
> DeviceMode returns the handle to a memory buffer containing a DEVMODE
> structure, which contains device-specific initialization data for the
device
> driver. Use the GlobalLock function to convert this handle into a pointer
to
> the structure.
>
> I Guess I need to explore that GlobalLock function. I want to stick with
the
> VCL as much as possible since the existing code is VCL.
> >
> > I have no idea what GetPrinter() does (I don't do VCL), but it is
> > obvious that ADeviceMode is a THandle, not a DEVMODE.
> >
> > AS I posted before, you need to use DocumentProperties() or the VCL
> > equiv. to get/set the devmode.
> >
> > num_bytes = DocumentProperties(NULL, printerHandle, &printerfile_port,
> > NULL, NULL, 0);
> > DevMode = (DEVMODE*)GlobalAlloc( GMEM_FIXED |GMEM_ZEROINIT,num_bytes);
> > DocumentProperties(NULL, printerHandle, &printerfile_port, DevMode,
> > NULL, DM_OUT_BUFFER);
> > // modify the appropriate fields
> > DevMode->dmFields = DM_ORIENTATION | DM_PRINTQUALITY ;
> > DevMode->dmOrientation = printer_direction=='L'? DMORIENT_LANDSCAPE:
> > DMORIENT_PORTRAIT;
> > DevMode->dmPrintQuality = DMRES_HIGH;
> > // call DocumentProperties() yet again, this time to get the
> > final DEVMODE to pass into the CreateDC() function
> > DocumentProperties(NULL, printerHandle, &printerfile_port, DevMode,
> > DevMode, DM_OUT_BUFFER | DM_IN_BUFFER);
> > // create a printer device context
> > printerDC = CreateDC( NULL/*Driver.c_str()*/, &printerfile_port, NULL,
> > DevMode);
> > GlobalFree(DevMode);
> >
> >
> > >One final thing how does Printer()->NewPage; differ from the
StartPage()
> and
> > >EndPage()?
> >
> > Don't know, but it probably calls them.
> >
> >
>
>