Constructing QImage from QBytearray

[dbrmik]

Hi

I am reading a raw binary data from a file into QBytearray. I want to use the QBytearray to construct a QImage. My code is shown below.

QFile fileIn (fileName);
fileIn.open(QFile::ReadOnly);
QByteArray data = fileIn.readAll(); 
QImage img(2048,1024,QImage::Format_Indexed8); 
img = QImage::fromData(data,QImage::Format_Indexed8);  
QPixmap qp=QPixmap::fromImage(img);
BPlaneIN->setPixmap(qp);

QFile fileIn (fileName);
fileIn.open(QFile::ReadOnly);
QByteArray data = fileIn.readAll(); 
QImage img(2048,1024,QImage::Format_Indexed8); 
img = QImage::fromData(data,QImage::Format_Indexed8);  
QPixmap qp=QPixmap::fromImage(img);
BPlaneIN->setPixmap(qp);

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error: conversion from `QByteArray' to `const uchar*' is ambiguous

Could some tell me why I get this error message. I have used scanline to get this working but am confused as to why this method of loading the buffer doesnt

Regards