toDouble() and rounding problem

[sadjoker]

Hello, guys. I`ve got a little problem
I`m using QT4.4.0+VC++2008
Database SQLite.
I have 3 double columns in the database:
1 = 100000.55
2 = 10000.55
3 = 1000.55

I`m selecting those values and displaying in QLabel

QSqlQuery query("SELECT * FROM main");
	double eur, usd, bgn;
     	while (query.next()) {
         eur= query.value(1).toDouble();
         usd = query.value(2).toDouble();
         bgn= query.value(3).toDouble();
    	 }

QSqlQuery query("SELECT * FROM main");
	double eur, usd, bgn;
     	while (query.next()) {
         eur= query.value(1).toDouble();
         usd = query.value(2).toDouble();
         bgn= query.value(3).toDouble();
    	 }

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but there goes the rounding problem:

1st value goes 100001
2nd value goes 10000.5
3rd value goes 1000.55

What am i missing and how to make 1st value to be shown as 100000.55
I`ve got alot of calculations and that rounding is a problem. Thanx.

PS. If i make it "eur= query.value(1).toString();" it shows the correct value but i need to do calculations and at some time i`ll call str.toDouble() and i get the round again.