I have two scenarios.
In first scenario: I added a QFrame in QWidget (acting as my mainwindow). I have a function drawline(). I call this function in QFrame:aintevent(). This works fine without any errors and lines are drawn.
In the second scenario, I am drawing on a QFrame after receiving response from my server.
My QFrame is add into MainWindow. When I call my draw function (outside QFrame's paintevent), I get the following errors:
QPainter::begin: Paint device returned engine == 0, type: 1
drawing lines w/o painter
QPainter::setPen: Painter not active
QPainter::setPen: Painter not active
QPainter::setPen: Painter not active
QPainter::setPen: Painter not active
Can anyone help me in solving the problem?
thanks
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