help about reading png file

[gzfan]

png format is support Transparent .
how to convert these file and display it in screen.
i use symbian s60 1.X development platform.
and i'm using CMdaImageFileToBitmapUtility class to convert png format into bitmap and draw it to screen .
but the result is the Transparent background become into a white background.
can anyone tell me how to convert png format and do not lose the Transparent effect?
thx
my convert source is like this :
CMdImageFileToBitmapUtility* utility = CMdaImageFileToBitmapUtility::NewL(*this,iServer);
utility->OpenL(pngfile);
...

TFrameInfo frameInfo;
iUtility->FrameInfo(iFrameIndex,frameInfo);
iBitmap->Create(frameInfo.iOverallSizeInPixels,EColor4K);
iUtility->ConvertL(*iBitmap,iFrameIndex);


....
gc.DrawBitmap(aRect,iBitmap);

[gzfan]

anybody knows?
or my description is hard to understand

[Jeepy]

Have you found the solution ? I need that too and I have the same problem...

Thanks,
Domi.

[gzfan]

virtual void ConvertL(CFbsBitmap& aBitmap,CFbsBitmap& aMaskBitmap,TInt aFrameNumber = 0) = 0;
use this function,then use the maskbitmap to get the trans information or bitblt with it

[Jeepy]

thanks for your fast answer, but can you be a little bit more helpfull in providing a stuff of code please ?

Domi.