Label Component

Label Component

Flash CS4 ActionScript 3.0 Tutorial

 

How to Add Pre-Built Label Component to Your Flash File

 

 

Flash ships with several Components. Components are pre-packaged objects that allow you to quickly add elements, such as scroll bars, text boxes and buttons.

Components can be added to the stage using the drag and drop method from the Components panel or added with ActionScript. The Component parameters are altered with the Component Inspector or ActionScript.

This example shows how to add a Label Component using the drag and drop method and with ActionScript. It also describes changing the Component parameters with the Component Inspector and ActionScript. To talk to a Component with ActionScript, it must first be added to the Library.

Components are actually Movie Symbol objects regardless of the Component. If you are developing in ActionScript 2.0, you will see a different set of Components available.

For more information on the other Components, see topics, Button Component, CheckBox Component, ColorPicker Component, ComboBox Component, DataGrid Component, List Component, NumericStepper Component, ProgressBar Component, RadioButton Component, ScrollPane Component, Slider Component, TextArea Component, TextInput Component, TileList Component, UILoader Component and UIScrollBar Component.

Tutorial Elements

Label Component with instance name label01_mc

 

Step One

Open a new Flash document and add a new layer.

Step Two

Name the upper layer Actions and the lower one Content.

Step Three

Select the first frame of the Content layer and open the Components panel (Window > Components).

Step Four

Double-click the Label Component icon to a add a Label to the center of the stage. The Label and it's assets are also added to the Library.

Step Five

With the Label selected open the Properties panel and change it's x and y settings to 50 and 50.

Step Six

With the Label still selected, open the Component Inspector (Window > Component Inspector).

Step Seven

Click the text row in the value column and type in This is my first label.

Step Eight

With the CheckBox still selected, open the Properties panel and assign it an instance name of label01_mc.

Step Nine

Open the ActionScript panel for the only keyframe in the Actions layer by Option double-clicking (PC - Alt double-clicking) the keyframe.

Step Ten

Copy/Paste the following code in the ActionScript Panel:

import fl.controls.Label;

var label02_mc:Label=new Label();

label02_mc.text="This is my second label";

label02_mc.width=200;

label02_mc.x=200;

label02_mc.y=50;

addChild(label02_mc);

Step Eleven

Test your movie by pressing Cmd/Return (PC - Ctrl/Enter). The two labels appear on the stage.

Dissecting the Code

The first line of the code at Step Ten imports the code necessary to talk to the Label class. Line two establishes a new Label variable named Label02.

Lines three through six set the Label's text, width and stage position. The final line adds it to the stage.

More Component Options

In this example we showed how to change the Label's text. You can use this same method to change the other Label values shown in the Component Inspector (i.e., autoSize, condenseWhite, enabled, htmlText, selectable, visible and wordWrap). You can also alter the height by changing the height properties (i.e., label01_mc.height=200;).

 

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