If you have tried applying an alpha transparency fade to the ‘_sans’ system font in Flash 9 you’ll know that it doesn’t work. The fix is to apply a filter to the textfield first:
myTextField.filters = [new BlurFilter(0,0,0)];
myTextField.alpha = 0.5;
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Hmm, I think applying the filter accomplishes the same thing as specifying .cacheAsBitmap
Nope!
This technique can also be used in flex by doing
woops, guess I can’t use flex code in a comment
eu queria saber como faço para poder fazer um slide de fotos para mim
Applying the filter causes bitmap caching but however if you just apply cacheAsBitmap instead of the filter, somehow the alpha transparency doesn’t work. Might be a bug of sorts.
This trick deosn’t seem to work with rotation, but You can also do something similar with creating a bitmapData and drawing the textfield, past that it can be rotated.