🚀 go-pugleaf

John Scott wrote:

>I am getting ready to try it this way. I am having a problem assigning the
>value to the dmDuplex value in the DEVMODE structure. The following code
>gives me an error   Pointer to structure required on left side of -> or ->*
>
>    char ADevice[256]={0}, ADriver[256]={0}, APort[256]={0};
>    THandle  ADeviceMode;
>    Printer()->GetPrinter(ADevice, ADriver, APort, ADeviceMode);

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.