QGridLayout refresh

[yeye_olive]

QWidget::setLayout: Attempting to set QLayout "" on QGroupBox "", which already has a layout
I don't know how to solve it

The error message is self-explanatory. Hint: read the documentation of the method it mentions.

[Pawello]

The error message is self-explanatory. Hint: read the documentation of the method it mentions.

I understand that this problem is connected with setLayout but this knowledge doesn't help me to solve it. Please help me to do this.

[yeye_olive]

The documentation for QWidget::setLayout() -- have you read it? -- says that you must first delete a widget's layout before you can set another layout. You get the error message because you have not done so.

[Pawello]

I've already find it out but thanks for help