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How to scale bitmaps ?
| Mon, 2005-10-03 05:06 | |
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Hello folks,
Can anyone tell me how to implement the Scale function of CBitmapScaler to scale bitmaps ? The Scale function described in SDK help is in 2 ways: Code: void Scale(TRequestStatus* aRequestStatus, CFbsBitmap& aSrcBitmap, CFbsBitmap& aTgtBitmap, TBool aMaintainAspectRatio=ETrue); void Scale(TRequestStatus* aRequestStatus, CFbsBitmap& aBitmap, const TSize& aDestinationSize, TBool aMaintainAspectRatio=ETrue); If anyone has used any of the above methods to scale bitmaps especially how to deal with 'TRequestStatus' parameter then please kindly provide it Many Thanks, Yogesh |
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Forum posts: 109
these methods are socalled "Asynchronous". This means you do not receive the result immediately, but later via a callback. Please read on "Active Objects" to find out how to use the TRequestStatus with Active Objects.
BTW, I have used it successful, but only for small pictures. When trying to scale down large images >0.5 Megapixel, the call returns with KErrNoMemory. Once it works for you, do you see the same?
br, Marcel