Hot do I get HTML source from a web page?

[ChrisW67]

Thanks a lot, but I don't need this. I want to make program which download only source

Hmmm, that would be the bit I gave you

then finds lines which I'm interested in and makes list of these lines.
Please show explain how I can do this.

You do it by learning some basic programming, then reading the manual and trying to do it for yourself. Here are some places to start.
QFile or QBuffer, QRegExp, QString, QStringList.

[wysota]

I'm started to learning programming in Qt, and I want write tool to finding something in source of page.

Thanks a lot, but I don't need this.

If you expected to be given code that does exactly what you want then what would have that taught you? Certainly not programming... copy&pasting, maybe...

[Roszko]

@up.

I don't want ready code of course, but some example codes using these libraries.

Now when I know that what libs i have to use in code, I will try do it by myself

Again sorry for my English :P

[wysota]

You have been given an example and yet you said it was doing something else than what you wanted.