Big problem with QVector::apend() function

[Zander87]

Hello everybody, i am encoutering a problem using the append/push_back funtcion of Qvector:

Doing this with the std works:

testclass test(&j); // just to try the declaration of one object
vector<testclass> table(1,testclass(&j));
table.push_back(&j);

testclass test(&j); // just to try the declaration of one object
vector<testclass> table(1,testclass(&j));
table.push_back(&j);

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Now doing this with Qt doesn't work:

QVector<testclass> table(1,testclass(&j));
table.push_back(&j);

QVector<testclass> table(1,testclass(&j));
table.push_back(&j);

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Code blocks said :
error: no matching function for call to `testclass::testclass()' (error on line 2)
But i don't understand were the programm does such a call ( with no argument to the constructor )

If anybody can help me.. this would be great....
thks