how to create objects in flash
how to animate in flash

Create Flash Objects ○

To write a listener function for a click event, you define the listener function with a parameter with the data type MouseEvent.. Shockwave Flash Object Flash OcxCreate Flash Objects Games

how to create objects in flash
how to animate in flash

Start y position of Flash area in PDF – using the upper left corner of the document as the 0 axis point, specify in points the beginning vertical position of the Flash object in the PDF document.. When its addEventListener() method is called, myButton stores the eventResponse() function in its list of event listeners.. (The text property represents the actual text content displayed on the screen) This line of code converts the numeric value in the variable numericData to text.. (In this context, a session means an instance of entering and leaving a site ) You can use dot syntax when you define packages.

how to create objects in flash

how to create objects in flash, how to create flash, how to animate in flash

Finally, between the opening and closing curly brackets ( { } ), you write the instructions you want the computer to carry out when the event happens.. The addEventListener() method takes two parameters: First, the name of the specific event you want to respond to.. Adobe Flash Professional In Flash Professional, the new operator can also be used to create an instance of a movie clip symbol that is defined in the Library but isn’t placed on the Stage.. For example, consider the following class definition: Using dot syntax, you can access the prop1 property and the method1() method by using the instance name created in the following code: The Flash Objects API lets extension developers build objects that create simple SWF files through Flash Generator.

how to animate in flash

Each event is affiliated with a specific class Every event class has a special value, which is like a unique name, defined for each of its events.. First, it defines a function, which is the way to specify the actions you want performed in response to the event.. Introduction to object-oriented programming

A function is identical to a method except that it isn’t necessarily associated with a specific class.. Adobe Flash Professional If you’ve worked with symbols in Flash Professional, you’re already used to working with objects.. All of these ways that you can modify a movie clip symbol in Flash Professional are also available in ActionScript.. The computer then looks at the list of event listeners stored by myButton It goes through these functions one by one, calling each function and passing the event object to the function as a parameter.. The most common way to create an instance for any data type is to use the new operator with the class name, as shown here: Creating an object using the new operator is often described as “calling the class’s constructor.. Sometimes values (or variables) are placed in the parentheses, as a way to pass along additional information that is necessary to carry out the action.. When the eventResponse() function is called, the code in that function runs, so your specified actions are carried out.. Always assign an actual value to the variable (create an object and store it in the variable) before you attempt to use or manipulate it.. The event-handling process The following is a step-by-step description of the process that happens when you create an event listener.. How can you create an object in Adobe Acrobat pro, Like Link, form filed or image can b add with appropriate tool, or you can select with object tool.. You work with properties like individual variables In fact, you can think of properties as simply the “child” variables contained in an object.. This API provides a way to set parameters in a Flash Generator template and output as a SWF file, or image file.. Internally, myButton keeps a list of functions that are listening to each of its events.. For example, the Number class’s toString() method converts the numeric value to its text representation: For example, you would use the toString() method if you wanted to display the value of a Number variable in a text field on the screen.. The event: What is the thing that is going to happen, the thing that you want to respond to? The specific event is important to identify, because many objects trigger several events.. With several ActionScript data types, you can create an instance using a literal expression , which is a value written directly into the ActionScript code.. You can also make various color adjustments like changing its alpha (transparency) or applying a drop-shadow filter to it.. A function provides a way for you to group actions with a single name that is like a shortcut name to carry out the actions.. Touch Mode object tool can also be use for this work You can import content as part of the document, like text, images and multimedia objects.. The code follows this basic structure (elements in bold are placeholders you’d fill in for your specific case): This code does two things.. Next, it calls the addEventListener() method of the source object Calling addEventListener() essentially “subscribes” the function to the specified event.. When you assign an ID to that component, that ID becomes the name of an ActionScript variable containing that component instance.. One part of creating an object is declaring a variable; however, declaring a variable only creates an empty place in the computer’s memory.. However, some methods can perform calculations and return a result that can be used like a variable.. Some simple computer programs consist of nothing more than a few steps that the computer performs, at which point the program ends.. Basic event handling The technique for specifying certain actions to perform in response to particular events is known as event handling.. Properties A property represents one of the pieces of data that are bundled together in an object.. Other Flash Professional tools let you make more changes, like using the Free Transform tool to rotate the rectangle.. In other words, this firstName means the firstName property of this object Making a Frame-by-Frame Flash Animation: Understand the basics of frame-by-frame animation.. First, open your object up and convert it to a symbol in Flash It doesn't matter if it's a graphic or movie clip, just make sure it's a symbol.. In this example, entryText is an input text field, and outputText is a dynamic text field: Clicking a button to navigate to a URL.. However, in object-oriented programming, the program instructions are divided among different objects.. Adobe Flash — Objects and Classes Create two objects from the Product class You'll create a new FLA file, and then create two objects from the Product class.. For example, these two lines of code do the same thing: It’s important to be familiar with the new ClassName () way of creating objects.. Flash Professional automatically declares a variable with that instance name, creates an object instance, and stores that object in the variable.. Since the eventResponse() function is one of myButton ’s listeners, as part of this process the computer calls the eventResponse() function.. This code instructs the MovieClip named shortFilm to start playing: This line makes the MovieClip named shortFilm stop playing (the playhead stops in place, like pausing a video): This code makes a MovieClip named shortFilm move its playhead to Frame 1 and stop playing (like rewinding a video): Methods, like properties, are accessed by writing the object’s name (a variable), then a period, and then the name of the method followed by parentheses.. Similarly, in Flex you create a component in MXML either by coding an MXML tag or by placing the component on the editor in Flash Builder Design mode.. Create Flash Objects CrosswordFlash Object Download. You register your function with the event source object by calling the addEventListener() method of that object (all objects that have events also have an addEventListener() method).. That movie clip can play, or stop, or be instructed to move the playhead to a particular frame.. In Flash Professional place a movie clip symbol, button symbol, or text field on the Stage and assign it an instance name.. ” A constructor is a special method that is called as part of the process of creating an instance of a class.. Events are the mechanism that determines which instructions the computer carries out and when.. The this Keyword In a function definition, this refers to the 'owner' of the function.. There are various characteristics of the movie clip that you can modify When it’s selected you can change values in the Property inspector like its x coordinate or its width.. Note that a function name is written without parentheses when it’s passed as a parameter.. In this case that’s only one line of code: calling the addEventListener() method on the event source object (named myButton ) and passing the eventResponse function as a parameter.. Notice that when you create an instance in this way, you put parentheses after the class name.. An example song object can have properties named artist and title ; the MovieClip class has properties like rotation , x , width , and alpha.. You also specify one parameter (named eventObject in this example) Specifying a function parameter is like declaring a variable, so you also have to indicate the data type of the parameter.. You can refer to the events package using the following expression: You can also refer to the EventDispatcher class using this expression: Working with objects ActionScript is what’s known as an object-oriented programming language.. These values are known as method parameters For example, the gotoAndStop() method needs information about which frame to go to, so it requires a single parameter in the parentheses.. The data type you specify for the function parameter is always the associated class of the specific event you want to respond to.. When the event happens, the function’s actions are carried out Consider each of these parts in more detail.. Event-handling examples Here are a few more concrete examples of event handling code.. Sometimes you specify parameter values in the parentheses These are two things that you also do when calling a method.. You can only create an instance of any of those data types in ActionScript using the new operator.. Object-oriented programming is simply an approach to programming It’s really nothing more than a way to organize the code in a program, using objects.. In essence, events are things that happen that ActionScript is aware of and can respond to.. When an ActionScript program is running, conceptually it just sits and waits for certain things to happen.. In this case, it’s an example of creating a listener function that is called when an object named myButton is clicked.. It then makes the value show up on the screen in the TextField object named calculatorDisplay : Events A computer program is a series of instructions that the computer carries out step-by-step.. In this case, linkButton is the instance name of the button: Creating object instances Before you can use an object in ActionScript, the object has to exist in the first place.. There are several additional ways you can create object instances using only ActionScript.. At some point, the user clicks the myButton object, triggering its click event (identified as MouseEvent.. In ActionScript object-oriented programming, there are three types of characteristics that any class can include: Properties Methods Events These elements are used to manage the pieces of data used by the program and to decide what actions are carried out and in what order.. (In this example, the parameter's data type is EventType ) Each type of event that you want to listen to has an ActionScript class associated with it.. The process of creating an object is known as instantiating the object In other words, you create an instance of a particular class.. It has this name because it’s the object where the computer targets the event (that is, where the event actually happens).. The whole structure together, “variable name-dot-property name,” is used like a single variable, as a name for a single value in the computer’s memory.. (In fact, the term “method” could be defined as a function that is associated with a particular class.. Shared-objects are sometimes referred as Flash cookies in the Flash/web development community.. One simple way to create an object instance doesn’t involve ActionScript at all.. The parentheses are the way that you indicate that you are calling the method, or in other words, instructing the object to perform that action.. The default is 18, or 25 inch Width of Flash area – enter in points the width of the area in the document for the Flash object to occupy.. The event-handling function is written Next you tell the event source object (the object that the event happens to, for example the button) that you want it to call your function when the event happens.. For many events, this object is an instance of the Event class For mouse events, it is a MouseEvent instance.. The TextField class’s text property is defined as a String, so it can contain only text values.. Here are some examples of ActionScript code that uses properties This line of code moves the MovieClip named square to the x coordinate 100 pixels: This code uses the rotation property to make the square MovieClip rotate to match the rotation of the triangle MovieClip: This code alters the horizontal scale of the square MovieClip making it one-and-a-half times wider than it used to be: Notice the common structure: you use a variable ( square , triangle ) as the name of the object, followed by a period (.. The actual code written by the programmer is as follows: Here is how this code would actually work when it’s running: When the SWF file loads, the computer makes note of the fact that there’s a function named eventResponse().. When you are writing ActionScript code to perform event handling, there are three important elements you’ll want to identify: The event source: Which object is the one the event is going to happen to? For example, which button was clicked, or which Loader object is loading the image? The event source is also known as the event target.. You modify the movie clip in ActionScript by changing the pieces of data that are all put together into a single bundle called a MovieClip object.. Even for those data types that let you create instances using a literal expression, you can also use the new operator to create an object instance.. That movie clip symbol is also (literally) an object in ActionScript; it’s an instance of the MovieClip class.. Conceptually, then, you can imagine a computer program as just a single long list of instructions.. The code is grouped into chunks of functionality, so related types of functionality or related pieces of information are grouped in one container.. This object that’s created is known as the event object , and it contains specific information about the event that happened: what type of event it is, where it happened, and other event-specific information if applicable.. ) provides a way to access the properties and methods of an object Using dot syntax, you can refer to a class property or method by using an instance name, followed by the dot operator and name of the property or method.. Many ActionScript data types don’t have a visual representation Consequently, they can’t be created by placing an item on the Flash Professional Stage or the Design mode of Flash Builder’s MXML editor.. Making a Frame-by-Frame Flash Animation: Understand the basics of frame-by-frame animation.. Here are some examples: Literal numeric value (enter the number directly): Literal String value (surround the text with double quotation marks): Literal Boolean value (use the literal values true or false ): Literal Array value (wrap a comma-separated list of values in square brackets): Literal XML value (enter the XML directly): ActionScript also defines literal expressions for the Array, RegExp, Object, and Function data types.. You use that value for the first parameter Second, the name of your event response function.. In the example above, this is the person object that 'owns' the fullName function.. These examples are meant to give you an idea of some of the common event elements and possible variations available when you write event-handling code: Clicking a button to start the current movie clip playing.. Shared-objects enable Flash movies to save data which persists across multiple sessions.. For other events, it is an instance of the class that’s associated with that event.. For example, a click event (triggered when the user clicks an item with the mouse) is associated with the MouseEvent class.. Many events are related to user interaction, such as a user clicking a button or pressing a key on the keyboard.. In the following example, playButton is the instance name of the button, and this is a special name meaning “the current object”: Detecting typing in a text field.. ) When you're creating a function for event handling, you choose the name for the function (named eventResponse in this case).. Methods A method is an action that an object can perform For example, suppose you’ve made a movie clip symbol in Flash Professional with several keyframes and animation on its timeline.. Nevertheless, they are still written with parentheses Unlike properties (and variables), methods aren’t used as value placeholders.. Imagine you’ve defined a movie clip symbol such as a drawing of a rectangle and you’ve placed a copy of it on the Stage.. ) and then the name of the property ( x , rotation , scaleX ) The period, known as the dot operator , is used to indicate that you’re accessing one of the child elements of an object.. There are also other types of events For example, if you use ActionScript to load an external image, there is an event that can let you know when the image has finished loading.. When those things happen, the specific ActionScript code that you’ve specified for those events runs.. The response: What steps do you want performed when the event happens? Any time you write ActionScript code to handle events, it requires these three elements.. You use the dot operator to refer to nested packages For example, the EventDispatcher class resides in a package named events that is nested within the package named flash.. However, you don’t always want to create an object visually, and for non-visual objects you can’t.. The API lets you create new Flash objects as well as read and manipulate existing Flash objects.. The computer then runs the code (specifically, the lines of code that aren’t in a function).. However, ActionScript programs are designed to keep running, waiting for user input or other things to happen.. Next, click on the symbol you just created and go to 'properties' Find the section called 'color effect' then find the drop down menu.. Dot syntax Create Flash Objects PicturesShockwave Flash Object Add On The dot operator (.. Other methods, like play() and stop() , are self-explanatory, so they don’t require extra information.. Earlier the term “computer program” was defined as a series of steps or instructions that the computer performs.. CLICK in the code) At that point, the following occurs: An object is created that’s an instance of the class associated with the event in question (MouseEvent in this example).

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