Printing issue in Flutter Windows

[MimiKhan]

Issue Description Printing functionality in my Flutter Windows application is not working as expected in release mode. However, it works perfectly in debug mode. I have tried multiple approaches to troubleshoot the issue but haven't been successful in resolving it.

Environment

• Flutter Version: 3.10.6
• Operating System: Windows Version 10.0.22621.2215
• Printing Package Version: 5.11.1
• Flutter Doctor Summary : [√] Flutter (Channel stable, 3.10.6, on Microsoft Windows [Version 10.0.22621.2215], locale en-PK) [√] Windows Version (Installed version of Windows is version 10 or higher) [√] Android toolchain - develop for Android devices (Android SDK version 34.0.0) [√] Chrome - develop for the web [√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.6.4) [√] Android Studio (version 2022.3) [√] IntelliJ IDEA Ultimate Edition (version 2021.2) [√] VS Code (version 1.81.1) [√] Connected device (3 available) [√] Network resources

Problem Statement When attempting to print from my Flutter Windows application in release mode, the process fails, and no output is sent to the printer. This issue is specific to release mode, as printing works as expected in debug mode.

Steps to Reproduce

1. Build and run the Flutter Windows application in release mode.
2. Trigger a print operation from the app.
3. Observe that the printing process fails.

Expected Behavior Printing should work seamlessly in both debug and release modes, providing output to the designated printer.

Additional Information

• I have verified that the necessary permissions are granted to the application.
• The issue is not related to the printer or its drivers, as printing functions correctly in debug mode.
• There are no exceptions or error messages in the Flutter console or log.
• I have thoroughly reviewed the printing code and configurations to ensure there are no discrepancies.

I'm seeking assistance in identifying the root cause of this issue and finding a solution to enable printing in release mode for my Flutter Windows application. Any guidance or insights into potential solutions would be greatly appreciated.

Thank you!

[PMack101]

I have had the same issue with the package working in debug but not in release mode.

I have managed to get around the issue by commenting out lines 148 - 164 of 'widget_wrapper.dart', and then in line 174 changing 'computedConstraints.' to 'constraints.'.

[MimiKhan]

Ok Thanks. I'll try and let you know. Thanks for the help.

[MimiKhan]

I tried this but nothing's changed for me. Its still not printing. @PMack101

[bksbora]

Can you try to avoid spaces and some caracters like İ ( Turkish <3) for example :

PdfPreview(
          pdfFileName:
              '${customerModel.musteriAdiSoyadi!.replaceAll(RegExp(r' '), "-").toString()}