QFile, QTextStream, seek()

Hello all,
sorry if I'm making a silly mistake here, but I'm not sure what the best way is.
I'm making a file that has several blocks (at predefined positions). When I create the file, the blocks are not full (i.e. not contiguous). They will be filled later. So, I'd like to skip/extend the file to the position of the next block. Using a seek() and a write just appends and doesn't work.

how do I extend file?
thanks
K
below is the code:

Code:

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//make a new file with name in the directory 
	file = new QFile(path +"\\"+ name);
	if(file->open(QIODevice::Append))
		fileName = name;// the file has been opened
	else
		return -1;
 
//	make a text stream
	QTextStream stream( file );
 
//	write the header
	stream.seek(POS_HEADER);
	stream << makeHeader();
 
//	write the comments block 
	QString comments("This is the standard comments block");
	stream.seek( POS_HEADER_COMMENT);
	stream << comments;

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Quote:

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Originally Posted by TheKedge

open(QIODevice::Append)

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Maybe you should use QIODevice::ReadWrite to make seek() work?

I know why you've had more thanks than posts.
thanks
K

Quote:

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Originally Posted by TheKedge

I know why you've had more thanks than posts.

---

Are you sure he has more thanks than posts? :D

It is true that his thank ratio per thanked post is greater than 1.00 though :)

Ahh, I see,

so he has 359 thanks in 2504 posts ... that's only ...erm, 14% useful posts:p

K