Dragging and Dropping in .NET

Draw QR in .NET Dragging and Dropping
Dragging and Dropping
read qr code 2d barcode in .net
Using Barcode Control SDK for visual .net Control to generate, create, read, scan barcode image in visual .net applications.
Now that AbstractPost is complete, you can create a few basic concrete classes that will subclass AbstractPost and implement an actual post. This sample application walks you through a text post, a photo post, and a quote post. Adding support for additional types of posts should be easy once you re comfortable creating these posts using AbstractPost.
QR-Code integration with .net
using .net toproduce qr barcode with asp.net web,windows application
Qr Codes scanner on .net
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET applications.
A regular post is the simplest form of post and requires little work. Essentially a simple text post, it only requires two additional arguments that AbstractPost does not already handle: Title and Body. The Body argument can be either plain text or HTML text. Listing 10.7 shows what the RegularPost class looks like.
Barcode reader on .net
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET applications.
Part III
Bar Code barcode library for .net
use .net framework crystal bar code integrated topaint barcode on .net
Control qr barcode image on .net c#
generate, create qr barcode none for c#.net projects
LISTING 10.7 package org.airbible.tumblr.posts { import flash.events.HTTPStatusEvent; import flash.net.URLLoader; import flash.net.URLRequestHeader; import flash.net.URLRequestMethod; public class RegularPost extends AbstractPost { protected var title:String; protected var body:String; public function RegularPost( title:String, body:String, isPrivate:Boolean=false) { // uses the super keyword to access the AbstractPost constructor super( PostType.REGULAR ); // adds the title and body arguments to variables variables.title = title; variables.body = body; } override public function send():void { // uses super.sent() to execute AbstractPost s send method super.send(); // uses the URLLoader class to send the post to Tumblr var loader:URLLoader = new URLLoader(); loader.load( request ); } } }
Qr-codes barcode library on .net
using asp.net web forms toincoporate qr code iso/iec18004 with asp.net web,windows application
Control qr code image with vb.net
use .net framework quick response code creation touse qr code jis x 0510 for visual basic
The PhotoPost class works nearly identically to RegularPost but accepts a File object and a caption String instead of body and header. PhotoPost uses the assigned File object to upload the file along with the URLVariables and URLRequest objects instead of the URLLoader class because it is sending both a physical file and text data. Listing 10.8 demonstrates the PhotoPost class.
Upc A generating for .net
generate, create upc a none for .net projects
Dragging and Dropping
1D encoder on .net
using .net vs 2010 crystal todeploy 1d for asp.net web,windows application
LISTING 10.8 package org.airbible.tumblr.posts { import flash.filesystem.File; public class PhotoPost extends AbstractPost { protected var file:File; public function PhotoPost( file:File, caption:String, isPrivate:Boolean=false ) { super( PostType.PHOTO, isPrivate ); variables.caption = caption; this.file = file; } override public function send():void { super.send(); file.upload( request, data ); } } }
QR-Code printer in .net
using .net vs 2010 crystal topaint denso qr bar code for asp.net web,windows application
Dragging files
Visual Studio .NET usd-3 integratingon .net
using .net toaccess code 9/3 for asp.net web,windows application
Now that the posts and application structure have been taken care of, you can focus on the purpose of this sample application: dragging! The two forms covered in this section are the form for sending a regular post and the form for sending photo posts. You can create both of these forms using MXML and built-in Flex components for layout and UI, such as the TextInput, Button, Canvas, Hbox, and Vbox components. This section doesn t focus on the component usage too much here. To keep things simple and save trees, this exercise uses minimal MXML to describe the components used in these forms, but includes a complete MXML layout for each form at the end of each Form section.
Control ecc200 data in visual c#
to insert data matrix ecc200 and 2d data matrix barcode data, size, image with c# barcode sdk
Control code 39 image in visual basic
using visual studio .net toreceive uss code 39 for asp.net web,windows application
To become more familiar with MXML and the components used in this section, refer 4.
Generate bar code in vb
generate, create barcode none on vb.net projects
Part III
Control barcode pdf417 size in visual basic
pdf417 size on visual basic.net
Control qr code size on .net c#
to use qr code and denso qr bar code data, size, image with c#.net barcode sdk
Control gtin - 13 image with microsoft word
using barcode generation for office word control to generate, create ean13+2 image in office word applications.
The RegularForm.mxml component includes TextInput fields for both the title and body arguments used by the RegularPost class, and a Submit button component to send the post to the RegularPost class for submission. The two TextInput fields will be drag targets for dragging text into, but will allow the user the option to type text, also. Once functionality is ready, you can customize the look and feel of this form, but for now you ll just create the two TextInput fields, two Text components to label them, and the Submit button. See Figure 10.1 to see what this looks like when compiled. Listing 10.9 shows what the two TextInput fields and the Submit button will look like in MXML.
Rdlc Report data matrix generatorfor .net
use report rdlc barcode data matrix creator touse datamatrix with .net
FIGURE 10.1 Creating TextInput fields, Text components, and the Submit button
Control qrcode data on word documents
to draw qr code 2d barcode and qr barcode data, size, image with word documents barcode sdk
LISTING 10.9 <mx:Canvas xmlns:mx= http://www.adobe.com/2006/mxml xmlns:ns1= org.airbible.tumblr.forms.* > <mx:Text text= Title /> <mx:TextInput id= titleField width= 100% /> <mx:Text text= Body /> <mx:TextArea id= titleField width= 100% height= 100% /> <mx:Button id= submitBtn label= Submit width= 100% /> </mx:Canvas>
Dragging and Dropping
Now that you have the UI elements you ll be using, you can start adding inline ActionScript in a <mx:Script> node to add support for dragging text into these fields. Notice that the TextInput and TextArea components have IDs: These will be used for access in ActionScript when you add the drag event listeners. To start adding functionality, add the initialize listener to the Canvas component and add the method onInitialize in inline ActionScript inside the <mx:Script> node (see Listing 10.10).
LISTING 10.10 <mx:Canvas xmlns:mx= http://www.adobe.com/2006/mxml xmlns:ns1= org.airbible.tumblr.forms.* initialize= onInitialize( event ) > <mx:Text text= Title /> <mx:TextInput id= titleField width= 100% /> <mx:Text text= Body /> <mx:TextArea id= titleField width= 100% height= 100% /> <mx:Button id= submitBtn label= Submit width= 100% /> <mx:Script> <![CDATA[ protected function onInitialize( e:Event ):void { // add initialize code } ]]> </mx:Script> </mx:Canvas>
Next you ll add event handlers for the NativeDragEvent.NATIVE_DRAG_ENTER, NativeDragEvent.NATIVE_DRAG_DROP, and submitBtn click event handler, as shown here:
protected protected protected protected protected function function function function function onTitleDragEnter( e:NativeDragEvent ):void {} onTitleDragDrop( e:NativeDragEvent ):void {} onBodyDragEnter( e:NativeDragEvent ):void {} onBodyDragDrop( e:NativeDragEvent ):void {} onSubmitHandler( e:MouseEvent ):void {}
When the user drags an item over the titleField or bodyField input fields, onDragEnter Handler is called and needs to analyze the dragged contents to verify that it contains text that can be placed in the fields. If the user drops the items, onDragDropHandler is called to handle the Clipboard object dropped into the field.