Temporary printer life span

[guy.marom]

Hello,

I can't seem to understand when the temporary printer is deleted. The documentation says that it only exists for one print job but that is incorrect. I wrote an application that creates a temp printer, configures it, sends a print job, configures it again, sends another job etc.
However, when I tried creating a printer before each job, an auto incrementing number was added to the name so I had Printer, PRinter 1, Printer 2 and so on.
I would prefer not having to create a new virtual printer for each job since it takes 1-3 seconds and my app must perform better than that.
Please elaborate on this topic.

[Ivan - Tracker Software]

Printer is created when you call Printer property of CPXCControlEx, and is removed when you release interface of this printer.

[guy.marom]

Printer is created when you call Printer property of CPXCControlEx, and is removed when you release interface of this printer.

By removed, do you mean calling the function RemoveOrphanPrinters from the PXCComLib.CPXCControlEx object? The object PXCComLib.CPXCPrinter doesn't have any function that I see that can "remove" it.

[Ivan - Tracker Software]

No, you don't need to call this function.

Sample in C++ (Using CComPtr<>):

// creating the printer
pPrinter = pFactory->Printer[L"", L"My PDF-XChange", L"<REG KEY HERE>", L"<DEV CODE HERE>"];
DispEventAdvise(pPrinter); // this line required to catch events from printer

...
// removing printer
DispEventUnadvise(pPrinter); // detaching event handlers
pPrinter.Release(); // releasing printer (now temporary printer will be deleted).

/// On VB
Dim PDFPFactory As New PXCComLib.CPXCControlEx
Dim WithEvents PDFPrinter As PXCComLib.CPXCPrinter

Set PDFPrinter = PDFPFactory.Printer("", "My PDF-XChange", "<REG CODE>", "<DEV CODE>")
...
; Releasing printer - temporary printer will be deleted
Set PDFPrinter = Nothing


HTH

[guy.marom]

It's not working, I'm using VB.NET:

Dim f As New PXCComLib.CPXCControlEx()
Dim p As PXCComLib.CPXCPrinter = DirectCast(f.Printer("", "MyPrinter", "", ""), PXCComLib.CPXCPrinter)
p = Nothing

It is my understanding that assigning Nothing to an object doesn't release it but simply allows its memory to be freed by the garbage collector. However calling RemoveOrphanPrinters does work. Is there any reason why I shouldn't use it?