how can I get picture data from file ?

[yleesun]

hi ,I write picture data to file by QDataStream,and I want get the picture data from the file as 'char*' 。

How can I do this? thansk!

[spirit]

take a look at QImage::fromData.

[yleesun]

thanks !
I have got QImage object! I want to known than how to convert QImage to char*?

example:
I want a function like this:
char* readimage(QString filepath); // I don't know how to convert QImage to char*!

this is ok .I have already got QImage from file.
QImage readimage(QString filepath); //

[spirit]

there is an example in Qt Assistant (take a look at description of QImage::save):

QImage image;
QByteArray ba;
QBuffer buffer(&ba);
buffer.open(QIODevice::WriteOnly);
image.save(&buffer, "PNG"); // writes image into ba in PNG format

QImage image;
QByteArray ba;
QBuffer buffer(&ba);
buffer.open(QIODevice::WriteOnly);
image.save(&buffer, "PNG"); // writes image into ba in PNG format

To copy to clipboard, switch view to plain text mode 

[aamer4yu]

May be QImage::bits might help you

[yleesun]

thanks !
the problem was fixed!