Text search utility

[NewGuy]

I have started to teach myself Qt. I have, in the lack of a better assignment, given myself the task to wirte a small program that searches several text files for a specific phrase. So far I've run into a small problem with QTextStream. The idea is that the program asks the user if he wishes to view the files being searched in a TextEdit in the mainwindow. I just can't seem to get it done right

QStringList::Iterator it = FilePath.begin(); //FilePath holds the filepaths
	QTextStream TextStream;
	QString Line;
	if (MsgBoxAnswer)
	{
		while(it != FilePath.end())
		{
			ui.txtOutput->append("Before TextStream"); //Test to see whether the program works so far
			TextStream << *it;
			while(!TextStream.atEnd())
				{
					ui.txtOutput->append("in TextStream"); //Test to see whether the program works so far
					Line = TextStream.readLine(0);
					ui.txtOutput->append(Line);
				}
			++it;
		}
	}

QStringList::Iterator it = FilePath.begin(); //FilePath holds the filepaths
	QTextStream TextStream;
	QString Line;
	if (MsgBoxAnswer)
	{
		while(it != FilePath.end())
		{
			ui.txtOutput->append("Before TextStream"); //Test to see whether the program works so far
			TextStream << *it;
			while(!TextStream.atEnd())
				{
					ui.txtOutput->append("in TextStream"); //Test to see whether the program works so far
					Line = TextStream.readLine(0);
					ui.txtOutput->append(Line);
				}
			++it;
		}
	}

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What is the matter? The program never enters the while(!TextStream.atEnd()) loop