Open juancarlosgzs opened 3 months ago
Hello @juancarlosgzs! I'm here to help you with your issue. I'm a bot designed to assist you with bug fixes, answer your questions, and guide you on becoming a contributor. Let's work together to solve the problem you're facing.
To print to a specific printer by name using Electron and handle all printers connected to the computer (USB or Bluetooth), you can use the following approach:
const { app, BrowserWindow } = require('electron');
const { Bluetooth, Printer } = require('..'); // Adjust the path as necessary
app.on('ready', async () => {
const mainWindow = new BrowserWindow();
try {
const availablePrinters = await mainWindow.webContents.getPrintersAsync();
const preferredPrinterName = 'Your_Printer_Name'; // Replace with your printer's name
const selectedPrinter = availablePrinters.find(printer => printer.name === preferredPrinterName);
if (selectedPrinter) {
console.log('Connect to ' + selectedPrinter.name);
const device = await Bluetooth.getDevice(selectedPrinter.address, selectedPrinter.channel);
const printer = await Printer.create(device);
await printer.text('hello');
await printer.cut();
await printer.close();
console.log('print job done');
} else {
console.log('Printer not found');
}
} catch (error) {
console.log('error', error);
}
});
This script will:
getPrintersAsync
.Make sure to replace 'Your_Printer_Name'
with the actual name of your printer [1].
To continue talking to Dosu, mention @dosu.
Any ideas? Still can't find a way
To print to a specific thermal printer by name using Electron, ensuring compatibility with both USB and Bluetooth printers, you can use the ESC/POS Printer driver for Node.js. Below are example code snippets that demonstrate how to connect to both Bluetooth and USB printers by name.
const { Bluetooth, Printer } = require('escpos-printer-driver');
(async () => {
try {
const availablePrinters = await Bluetooth.findPrinters();
const preferredPrinterName = 'Your_Printer_Name'; // Replace with your printer's name
const btPrinter = availablePrinters.filter(p => p && p.name === preferredPrinterName)[0];
if (!btPrinter) {
throw new Error(`Printer with name ${preferredPrinterName} not found`);
}
console.log('Connect to ' + btPrinter.name);
const device = await Bluetooth.getDevice(btPrinter.address, btPrinter.channel);
const printer = await Printer.create(device);
await printer.text('hello');
await printer.cut();
await printer.close();
console.log('print job done');
} catch (error) {
console.log('error', error);
}
})();
const { USB, Printer } = require('escpos-printer-driver');
(async () => {
try {
const device = await USB.getDevice();
const printer = await Printer.create(device);
await printer.text('hello');
await printer.cut();
await printer.close();
console.log('print job done');
} catch (error) {
console.log('error', error);
}
})();
For both examples, you need to replace 'Your_Printer_Name'
with the actual name of your printer. The Bluetooth example filters the available Bluetooth printers to find the one with the specified name and then connects to it. The USB example directly connects to the USB printer. Both examples use the ESC/POS Printer driver for Node.js to send print commands to the printer [1][2].
To continue talking to Dosu, mention @dosu.
I'm trying to print to an specific thermal printer but I just have the data that is returned by the getPrintersAsync function from Electron. In the past with other libraries, I used the name itself of the printer in order to print to an specific printer, how can I do that with this library?
In my use case I need to handle all printers that are connected to the computer, either for it to be usb or bluetooth.
@dohooo