Flex - Printing Support

Flex provides a special class FlexPrintJob to print flex objects.

  • FlexPrintJob can be used to print one or more Flex objects, such as a Form or VBox container.

  • FlexPrintJob prints the object and all objects that it contains.

  • The objects can be all or part of the displayed interface.

  • The objects can be components that format data specifically for printing.

  • The FlexPrintJob class lets you scale the output to fit the page.

  • The FlexPrintJob class automatically uses multiple pages to print an object that does not fit on a single page.

  • The FlexPrintJob class causes the operating system to display a Print dialog box. You cannot print without some user action.

Prepare and send a print job

You print output by preparing and sending a print job. Let's create an instance of the FlexPrintJob class

var printJob:FlexPrintJob = new FlexPrintJob();

Start the print job


Flex will cause the operating system to display a Print dialog box. Add one or more objects to the print job and specify how to scale them

printJob.addObject(myObject, FlexPrintJobScaleType.MATCH_WIDTH); 

Each object starts on a new page. Send the print job to the printer


Printing Example

Step Description
1 Create a project with a name HelloWorld under a package com.tutorialspoint.client as explained in the Flex - Create Application chapter.
2 Modify HelloWorld.mxml as explained below. Keep rest of the files unchanged.
3 Compile and run the application to make sure business logic is working as per the requirements.

Following is the content of the modified mxml file src/com.tutorialspoint/HelloWorld.mxml.

<?xml version = "1.0" encoding = "utf-8"?>
<s:Application xmlns:fx = "http://ns.adobe.com/mxml/2009" 
   xmlns:s = "library://ns.adobe.com/flex/spark" 
   xmlns:mx = "library://ns.adobe.com/flex/mx"
   width = "100%" height = "100%"
   minWidth = "500" minHeight = "500" 
   initialize = "application_initializeHandler(event)">
   <fx:Style source = "/com/tutorialspoint/client/Style.css" />
         import mx.controls.Alert;
         import mx.events.FlexEvent;
         import mx.printing.FlexPrintJob;
         import mx.printing.FlexPrintJobScaleType;
         protected function btnClickMe_clickHandler(event:MouseEvent):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.

        protected function application_initializeHandler(event:FlexEvent):void {
            lblHeader.text = "My Hello World Application";				
   <s:BorderContainer width = "500" height = "500" id = "mainContainer" 
      styleName = "container">
      <s:VGroup width = "100%" height = "100%" gap = "50"
         horizontalAlign = "center" 
         verticalAlign = "middle">
         <s:Label id = "lblHeader" fontSize = "40" color = "0x777777" 
            styleName = "heading" />
         <mx:DataGrid id = "myDataGrid" width = "300">
               <fx:Object Product = "Flex" Code = "1000" />
               <fx:Object Product = "GWT" Code = "2000" />
               <fx:Object Product = "JAVA" Code = "3000" />
               <fx:Object Product = "JUnit" Code = "4000" />
         <s:Button label = "Print Me!" id = "btnClickMe" 
            click = "btnClickMe_clickHandler(event)" 
            styleName = "button" />

Once you are ready with all the changes done, let us compile and run the application in normal mode as we did in Flex - Create Application chapter. If everything is fine with your application, it will produce the following result: [ Try it online ]

flex Print

Click on print me button and you can see the printout of the data grid shown below.

flex Print 1
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