import mx.printing.*;
// Create a PrintJob instance.
private function doPrint():void {
// Create an instance of the FlexPrintJob class.
var printJob:FlexPrintJob = new FlexPrintJob();
// Start the print job.
if (printJob.start() != true) return;
// Add the object to print. Do not scale it.
printJob.addObject(myDataGrid, FlexPrintJobScaleType.NONE);
// Send the job to the printer.
printJob.send();
}