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Error "Printer Driver Locked" - Getting this error trying to install printer, is this known issue?

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#1 Posted : Sunday, August 2, 2020 9:03:48 AM(UTC)

Aryan123

Groups: Registered
Posts: 7

Thanks: 2 times

I am trying following code based on documentation provided by LeadTools. But getting the error "Printer Driver Locked"
I am running VS 2019 as Administrator and I am Windows 10 64 bit. Is this known issue?

Quote:

try
{
string printerName = "Lead Printer";
List<string> installedPrinters = new List<string>();
foreach (string printer in PrinterSettings.InstalledPrinters)
installedPrinters.Add(printer);
if (!installedPrinters.Contains(printerName))
{
const string documentPrinterRegPath = @"SOFTWARE\LEAD Technologies, Inc.\Printer\";
const string printerDriverName = "LEADTOOLS VIRTUAL PRINTER";
var printerInfo= new PrinterInfo()
{
//DriverName = printerDriverName,
PortName = printerName,
MonitorName = printerName,
ProductName = printerName,
PrinterName = printerName,
Password = string.Empty,
RegistryKey = documentPrinterRegPath + printerName,
RootDir = @"C:\LEADTOOLS 20\Bin\Common\PrinterDriver",
Url = "http://www.leadtools.com/support/default.htm",
PrinterExe = Application.ExecutablePath,
AboutString = String.Format("{0} - {1}", printerDriverName, printerName),
};

Printer.Install(printerInfo);
}
_printer = new Printer(printerName);
_printer.EmfEvent += new EventHandler<EmfEventArgs>(_printer_EmfEvent);
_printer.JobEvent += new EventHandler<JobEventArgs>(_printer_JobEvent);
}
catch (Exception ex)
{
MessageBox.Show(this, ex.Message);
}


	Try the latest version of LEADTOOLS for free for 60 days by downloading the evaluation: https://www.leadtools.com/downloads Wanna join the discussion? Login to your LEADTOOLS Support account or Register a new forum account.

#2 Posted : Sunday, August 2, 2020 2:57:58 PM(UTC)

Hadi

Groups: Manager, Tech Support, Administrators
Posts: 218

Was thanked: 12 time(s) in 12 post(s)

Hello,

In order to use LEADTOOLS Functionality, you need to set a valid evaluation or runtime license as described here:

https://www.leadtools.co...g-a-runtime-license.html

Since you are using .NET, you can just copy the following into the start of your app:

Code:

var lic = "C:\LEADTOOLS 20\Support\Common\License\LEADTOOLS.LIC";
var key = File.ReadAllText("C:\LEADTOOLS 20\Support\Common\License\LEADTOOLS.LIC.KEY");
RasterSupport.SetLicense(lic, key);

Thanks,
Hadi

Hadi Chami
Developer Support Manager
LEAD Technologies, Inc.

1 user thanked Hadi for this useful post.

Aryan123 on 8/4/2020(UTC)

#3 Posted : Tuesday, August 4, 2020 1:25:59 AM(UTC)

Aryan123

Groups: Registered
Posts: 7

Thanks: 2 times

thanks, I did that, now I am getting following error
"Function not successful"

Same code and licence files are there as well.

#4 Posted : Tuesday, August 4, 2020 8:23:16 AM(UTC)

Hadi

Groups: Manager, Tech Support, Administrators
Posts: 218

Was thanked: 12 time(s) in 12 post(s)

I have created a virtual printer poc for you that I have verified works. Please try using this project and let me know if you have any issues with it.

File Attachment(s):

Print-to-File-Using-the-Virtual-Printer-Driver.zip (5kb) downloaded 23 time(s).

Hadi Chami
Developer Support Manager
LEAD Technologies, Inc.

1 user thanked Hadi for this useful post.

Aryan123 on 8/4/2020(UTC)

#5 Posted : Tuesday, August 4, 2020 9:27:59 AM(UTC)

Aryan123

Groups: Registered
Posts: 7

Thanks: 2 times

Thanks for quickly putting the project for me. But still when it calls Install method, VS freezes for sometime, saying debug is taking longer then I get an error "An unhandled exception of type 'Leadtools.RasterException' occurred in Leadtools.Printer.dll"

#6 Posted : Tuesday, August 4, 2020 9:29:48 AM(UTC)

Hadi

Groups: Manager, Tech Support, Administrators
Posts: 218

Was thanked: 12 time(s) in 12 post(s)

Are you still running Visual Studio as an Administrator? What is the RasterException that is thrown? Can you include a screenshot?

Hadi Chami
Developer Support Manager
LEAD Technologies, Inc.

#7 Posted : Tuesday, August 4, 2020 9:30:30 AM(UTC)

Aryan123

Groups: Registered
Posts: 7

Thanks: 2 times

Yes I am, I wrapped with try.. catch, and saw that error message is same "Function not successful"

#8 Posted : Tuesday, August 4, 2020 9:35:57 AM(UTC)

Aryan123

Groups: Registered
Posts: 7

Thanks: 2 times

#9 Posted : Tuesday, August 4, 2020 9:37:43 AM(UTC)

Hadi

Groups: Manager, Tech Support, Administrators
Posts: 218

Was thanked: 12 time(s) in 12 post(s)

Do you have the LEADTOOLS SDK installed on this machine? Perhaps the Virtual Printer Driver is not installed. You can check if it is installed by going to C:\LEADTOOLS 20\Shortcuts\Virtual Printer\.NET Framework Class Libraries\Virtual Printer and running the 64-bit demo. Once there, click on Install new test printer

Hadi Chami
Developer Support Manager
LEAD Technologies, Inc.

#10 Posted : Tuesday, August 4, 2020 9:46:34 AM(UTC)

Aryan123

Groups: Registered
Posts: 7

Thanks: 2 times

Tried that too but no success, I am running VS as admin, you can see that on the top right "ADMIN"

#11 Posted : Tuesday, August 4, 2020 9:48:41 AM(UTC)

Aryan123

Groups: Registered
Posts: 7

Thanks: 2 times

when you said "Perhaps the Virtual Printer Driver is not installed"
how do i verify that? whether its installed correctly?

#12 Posted : Tuesday, August 4, 2020 10:05:21 AM(UTC)

Hadi

Groups: Manager, Tech Support, Administrators
Posts: 218

Was thanked: 12 time(s) in 12 post(s)

You can open and run the VirtualPrinterDriverDeploymentTool (running VS as admin):

C:\LEADTOOLS 20\Examples\Dotnet\cs\VirtualPrinterDriverDeploymentTool

This utility will let you install the printer driver. See the Readme.html in the same folder as the project for step-by-step instructions.

The other option is to run the LEADTOOLS installer again

Hadi Chami
Developer Support Manager
LEAD Technologies, Inc.

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