> For the complete documentation index, see [llms.txt](https://smartpossdk.gitbook.io/cloudpossdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://smartpossdk.gitbook.io/cloudpossdk/faq/sdk-error-collection/printer.md).

# Printer

* native\_printer\_open(),result = -1048663

After convert to hex value: 100057->0x57 means Too many users->Printer is occupied by app, can not open again.

* How to detect paper out.

```
The method querystatus() returns 0.
```

* When printing HTML, set the font-family by including quotes, for example: `font-family: 'monospace'`.