@n-2204 Please try to format your posts readably. For lines of code use the Code tag when posting, or but lines of 3-backticks above & below. You are also now asking this same question in a new thread you have created (https://forum.qt.io/topic/125774/qtableview-how-to-make-noneditable-column). You should stick to one thread, not create multiple ones. where i should give like it will be applicable for table1 or table2 I don't know what you mean. To use the flags() approach you must sub-class QStandardItemModel, which I assume is what your GAS_tool is, else this will have no effect. If you want to use the setFlags() approach, you do not need to sub-class, but must set the flags explicitly on each item which is to be non-editable. I also wrote this in your other thread.