When I wanted to take control over the shield that makes a window appear modal, I found out, that it seams to be not really implemented. I’ve found the functionality in the mx.managers.PopUpManagerImpl class in the Flex framework.

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Before this post check: When simple overriding is not possible!

In this post I will show why would you have to change the flex classes code.
I had hard times with this problem. When both scrollers appear in a container in the same time, a white rectangle is created in the corner. First I thought it’s something with the scroller (that’t why I didn’t find the solution). But I’ve found it! And I have to ask a question: Why is that the the rectangle have to be white, and it is hardcoded there?

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Before this post check: When simple overriding is not possible!
Here I will show how to override private functions for the Flex framework classes. If you want the DataGrid to have fix column ratios, that will never change try this.
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Sometimes I wanted to override a function of Flex component, but it was private. So what to do? If I need just a little change, or I just found a little bug there, and don’t want to make a component from scratch! Let’s go little more extreme.
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Sometimes you just want to embed a symbol from an SWF file what you made with the Flash IDE, but you can have problems. The symbol will not have information about the linked class. You will lose all the functionality that was there, the symbols child objects lose everything too. So how to embed the symbol and maintain the connection with the linked classes?

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I think lot of Flex users saw this error coming up so lets see what we have here.

The most annoying thing is that it seems that there are more actual solutions (so the problem can be very frustrating).

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