106     AlphaMask*          mpAlphaMask;  member in vcl::PNGReaderImpl
201     mpAlphaMask     ( NULL ),  in PNGReaderImpl()
261     delete mpAlphaMask;  in ~PNGReaderImpl()
481         if ( mpAlphaMask )  in GetBitmapEx()
482             mpAlphaMask->ReleaseAccess( mpMaskAcc );  in GetBitmapEx()
496         if ( mpAlphaMask )  in GetBitmapEx()
497             aRet = BitmapEx( *mpBmp, *mpAlphaMask );  in GetBitmapEx()
721         mpAlphaMask = new AlphaMask( maTargetSize );  in ImplReadHeader()
722         mpAlphaMask->Erase( 128 );  in ImplReadHeader()
723         mpMaskAcc = mpAlphaMask->AcquireWriteAccess();  in ImplReadHeader()
841             mpAlphaMask = new AlphaMask( maTargetSize );  in ImplReadTransparent()
842             mpMaskAcc = mpAlphaMask->AcquireWriteAccess();  in ImplReadTransparent()