Frozen Column in qtreeview

[AntriX]

Hi,

I have a treeview in which there are more than 15 columns. I want to freeze leftmost 4 columns so that when I scroll horizontally those 4 columns will remain as it is and other columns will move as scroller moves.
I have tried an approach mentioned here https://doc.qt.io/qt-5/qtwidgets-itemviews-frozencolumn-example.html but not success.
Can anyone please share the approach that i should use or link to any reference article/Sample code?

Thanks

[ChrisW67]

That approach works, so perhaps you should explain what "not success" means.

[AntriX]

Thank you. There were some issues with geometry. Its working now.