Re: getting the value of installable options in a PDE

• Subject: Re: getting the value of installable options in a PDE
• From: Paul Danbold <email@hidden>
• Date: Tue, 7 Oct 2003 02:09:40 -0700

Hi,

I'm working on a PDE customized Mac printer driver and in a PDE I want to
read the values of the installable options. I used some code Joris Kempen
got from Paul Danbold but that still does provide me the correct answer.

Here is what I did:

In the PPD file I defined the installable option OCMailBoxOption as follows:

*OpenGroup: InstallableOptions/Options Installed

*OpenUI *OCMailBoxOption/Mailbox : PickOne
*DefaultOCMailBoxOption: False
*OCMailBoxOption True/Use mailbox: ""
*OCMailBoxOption False/Don't use mailbox: ""
*CloseUI: *OCMailBoxOption

*CloseUI: *OCPageProgrammerOption

When I build and run the driver I can select it in Print Center and change
the value using the Show Info pane.
So far so good.
When I actually print I find some PS code in the output that correctly shows
the value:
%%BeginFeature: *OCMailBoxOption False

Of course I could parse the printjob to get the value, but that won't solve
the problem that I need the value also in the PDE!

Here are some code-snippets of my PDE code:

// PPD keys to look for in OCMailboxPDE
const unsigned char* kOCMailboxOptionKey = "\pOCMailBoxOption";
const unsigned char* kOCMailboxOptionValueKey = "\pOCMailBoxOption";

// Name: Prologue
// ... nothing of any interest here

// Name: Initialize
OSStatus Initialize( PMPDEContext context, PMPDEFlags* flags, PMPDERef ref,
ControlRef parentUserPane, PMPrintSession printSession)
{
OSStatus err = noErr;
myPluginContextPtr myContext = (myPluginContextPtr) context;
if ((myContext != NULL) && (printSession != NULL))
{
PMTicketRef printerInfo = NULL;
// Get the PrinterInfo TicketRef from the Session.
err = GetTicketFromSession(printSession, kPDE_PMPrinterInfoRef,
(void *)&printerInfo);
// Open the PPD, if available, and check it for the OCCoversPDE key
if (err == noErr)
{
FSSpec tempFSSpec;
PPDContext ppdContext;
Mindex mIndex;
Oindex oIndex;
err = ppdOpenCompiledPPDFromTicket(printerInfo, &ppdContext,
&tempFSSpec);
if(err == noErr)
{
mIndex = ppdGetMainIndex(ppdContext, (const
StringPtr)kOCCoversPDEKey);
// no valid key found
if(mIndex == kPPDInvalidIndex)
{
err = kPMInvalidKey;
}
else
{
// !!! check installable options !!!
err = setInstallableOptions(ppdContext, printerInfo);
if (err == noErr)
{
mIndex = ppdGetMainIndex(ppdContext, (const
StringPtr)kOCMailboxOptionKey);
if(mIndex)
{
oIndex = ppdGetOptionIndex(ppdContext, (const
StringPtr)kOCMailboxOptionValueKey);
VERBOSE("OCPDEpaper: Mailbox option: %d %d\n",
mIndex, oIndex);
if (oIndex)
{
// check value of option
// err = 1;
}
}
}
// end snippets

When I run the driver the statement
VERBOSE("OCPDEpaper: Mailbox option: %d %d\n", mIndex, oIndex);
always shows in the PB debugging console:
OCPDEpaper: Mailbox option: 44 0

independent if the mailbox option is true or false.

What am I doing wrong?

Shouldn't I use the ticket services mechanism? in the ticket services info I
find:
#define kPMInstallableOptionStr kPMPrinterInfoPrelude "PMInstallableOption"
#define kPMInstallableOptionKey CFSTR(kPMInstallableOptionStr)
But how do I use them?

Hans Loonen
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