Having Problems With Flash CS3 Error 1120?

Over the past few days, some readers have reported Flash CS3 bug 1120.

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    A very common error scenario is error 1120, undefined property error. In fact, this is perhaps the most common compilation error. The reason is probably very simple, but there are several ways to trigger it. We’ll take a quick look at some of the times you encounter this particular error and how to fix them.


    First of all, we have a general idea of ​​what is happening with this error. This will be a human theoretical discussion; For the rest of the exact advice, we come up with more practical examples.

    This error occurs when you reference a variable (or property) via a line of code, but that variable does not exist. If you are accustomed to writing ActionScript in scripting and in a panel rather than in terms of classes, do not emphasize the term “property”. I won’t hesitate for a long time why we have these two terms, but suffice it to say that any type of variable is actually a property, since ActionScript compiles code from the Scripts panel.

    flash cs3 error 1120

    If the ActionScript compiler cannot find what you specifiedand property, it will report it with compile error 1120. You will find something like this:

    1120: seeing undefined property foo.

    Solving this problem is usually not as difficult as finding the correct name. Let’s take a look.

    Example 1. Without Variable Declaration

    Use this code from time to time (if you like, you can create a “missing” example (ie create a project marked as “missing” in the source code) or create this project yourself. – same thing: just create new firmware file for the document class for this, and also paste this code into the class of the insurance policy):

    package dear import.display. *; Skips State College Expand Sprite Client function missing () fu = “Muu.”;

    Compile this FLA and you will access 1120: from the undefined property foo. Recommended error on line 7.

    This is also very clear; Under no circumstances have you declared or used the foo property on line 7 as if it already existed, without backfiring. ReThe trick, of course, is to declare a variable. Technically, this important thing can reasonably exist anywhere. One of the following solutions is valid:

    no public aspect (foo: String) foo is equivalent to “Moo.”;

    no public service () var fu: string; foo means “flies.”;

    package The flash.display value. *; The client class is missing an extended sprite special variable foo: string; Missing functional clients () fu = “Muu.”;

    The solution depends on what works and what you can try. It shouldn’t be common to declare a path parameter and then set it all over the body of a method, although there are usually times when you might want to include parameter values. maybe

    The way Flash looks for a variable associated with a name is mesmerizing. First, for a local variable, this is our own name foo . If not declared, it looks for parameters for that name. If he cannot find it, he looks for an instance apartment with the same name. If you don’t find any of thisbut, you will most likely get error 1120.

    Example 2: Typo

    Our next example will be the same. Here you can also just run the Typo project, usually from a download; or create a simple FLA file with a document class and paste the following code into it; also known as reading.

    package flash import. display. *; The base Typo class extends Sprite var fu: string; public characteristic Typo () bu = “flies.”;

    D here. not noticeably happening here. The idea is to declare a property foo and then set it to "Moo". . The meat of this will undoubtedly grace rows 5 through 9 and up. The rest is just a document class template.

    Again, the error is probably painfully obvious. And, of course, when it usually only takes two lines of code to successfully process. Obviously people have typos; we wanted to write positively:

    fu = “Muu.”;

    And if you correct the typo, you should be able to compile the FLA without errors 1120.

    While this is obvious, I would like to make two points. First, the guardianshipTips like these are actually harder to find when your project has thousands of lines of code. A good IDE or text editor can help you with autocomplete or some other form of error checking, but as a reliable and trouble-free ActionScript, you can also help yourself by throwing error 1120.

    The second clue is that the specific error reported by ActionScript occurs when you try to reference a property named “ boo ” but realize it won’t find it. In this example, we generated most of the typo errors according to our code. But the ActionScript suggestions know that you can actually improve on foo “; Assumes you meant” boo "Moo ="; hums while creating content and warns you if the problem is often not being able to find the Name property.

    This is a rather subtle distinction, so it’s helpful to remember the true cause of the error.

    Example 3. Declaring Instances

    Our “business as usual” example includes the Flash IDE, and This can be skipped if you are using Flash Builder with Flex Framework instead of Flash CS3 / 4/5. The error definition will increase in a few simple steps.

    The problematic project can be found in the Stage instance folder along with the downloadable package. Or anyone can recreate it by following a few of the following steps:

    1. Start a new computer flash file and its document class.
    2. Draw a shape in the Flash file and transform it into a suitable symbol.
    3. Select a symbol instance on the Stage to open the Properties Display screen and name the instance instance_mc .
    4. Still only in Flash, choose File> Publish Options, then click the Flash tab.
    5. Click on the subject of the “Settings …” button next to the corresponding context menu “Script:”.
    6. Where is the step: Automatically declare step instances, of course uncheck the box.
    7. Immediately after that, add the code to the document class:

      package import flash.display. *; public class StageInstance extends Sprite public service StageInstance () Instance_mc.rotation = 45;

    Now start the movie. As soon as you get the current error 1120 again.

    As you might guess, turning off “Automatically declare step instances” has a lot to do with these errors. This option is now enabled by default. Therefore, you probably have a reason for this – and you know that it is disabled for you.

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  • And if you think this speaks for itself, I’ll add a few cents to that. If you bring a class A document (or a special class associated with a symbol as part of a library), this class outputs a Sprite or MovieClip . Typical conventions for creating variables and properties are used in exactly the same way as for any other class, but unfortunately since you have a visual city for that object – the Flash IDE – you can definitely add more symbols to the stage and hence give them instance names. “Automatically

    When the Mention Scene Instances check box is selected, Flash looks in the IDE for objects added to the Stage and inserts property declarations into the appropriate classes for eachth hour of the symbol with the name.

    If this option is disabled, Flash will not do anything later when scene instances are enabled.

    To avoid errors, you can simply re-enable this de facto option. Alternatively, buyers can manually declare the artwork for the stage. If we make our page class like this:

    package flash import. display. *; public class StageInstance extends Sprite public variable instance_mc: MovieClip; Open the StageInstance () function instance_mc.rotation means 45;

    This will probably also avoid the error, since the property is always declared; Items were not automatically announced due to Flash Professional.

    Please note, if access to a particular modifier is not public , you will get a runtime error. I will not go into the details of this error; this will try to be another quick tip.

    Well, why, most likely, disable the option declared by experts? I think the reasons for all this are related to the abandonment of Flash as a development tool.swellings. If you are using Flash Builder when you need to encode or embed ASDoc or Flash content into Flex you programmed, you may appreciate the effect of disabling this option. If buyers turn it off, they will have to declare the property themselves. The opposite is also clear: when it is activated, people are forced not to highlight these properties manually.

    So, if you are running your own class files, ASDoc should most likely find a link to access the Stage instance, but not its own declaration, and you will get error 1120. Enabling this option is always handy. but if you customize it below, you will have to create “cleaner” code that is more portable or standalone.

    I Declare This Little Tip Complete

    flash cs3 error 1120

    Like many other errors, error 1120 is easy to fix by default if you know what to look for. Thanks for reading and stay tuned for many more quick troubleshooting tips!

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