Catching errors in Electron Printing

Question

The print dialog doesn't seem to appear when I have no printers attached with electron's built in printing. Right now I wait for the webpage to load then I print the page but no print message is displayed and no print error is displayed. I print dialog does appear I have a printer attached but doesn't appear and gives no error message when I don't.

win.webContents.on('did-finish-load', function() {
    try {
        console.log('Print Message: ', win.webContents.print({silent: false}));         
    }
    catch(e) {
        console.log('Print Error: ', e);
    }
});

Is there a way to check if the print dialog opened or the user has no printer available? Or even catch errors in electron printing?

Is there any way to then just check if there is a printer attached in javascript then? — Kobe Bryant, Sep 08 '16 at 21:14
You could [check if the user has any printers](https://github.com/tojocky/node-printer) using a separate module. — Mike Cluck, Sep 08 '16 at 21:14
@MikeC node-printer doesn't seem to be package-able with electron since I got it to work on my local machine but wasn't able to build it and put it in an exe since the Visual Studio and Python dependencies — Kobe Bryant, Sep 08 '16 at 21:17
@KobeBryant Check out [this issue](https://github.com/tojocky/node-printer/issues/113) which may address that problem for you. — Mike Cluck, Sep 08 '16 at 21:19

score 0 · Answer 1 · answered Jan 04 '22 at 16:32

You can pass a function as callback and get the response that includes error if execution is not successful.

win.webContents.print(options, (success, errorType) => {
  // if error, log error reason
  if (!success) console.log(errorType)
})

You can also use win.webContents.getPrinters to get system printer list.

webContents Print

Get Printers

Catching errors in Electron Printing

1 Answers1