Thanks jacek,
Drag a QWidget within the Qt Designer and promoted it to the custom class that i have made.
Now i have almost the same error:
QLayout::addChildLayout: layout "gridLayout" already has a parent
Segmentation fault
Another forum said something related to that
"If you want to create a sub-layout (i.e. you want to add it to another
layout), then you have to create it WITHOUT a parent. Just use the
constructor of QLayout without a parent.
Only add a parent (namely the top widget) for a top level layout (i.e. the
main layout of a widget).
"
How do i do that from within the Qt Designer?
In my case the gridLayout is the sub layout. and i have to instantiate that without a parent.
Regards
Sajjad
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