I'm hoping that someone would be able to help me with this. Is it possible in theory to subclass DataGrid to add and remove columns in such a way that not all the columns are invalidated? Basically I've got an ItemRenderer which is quite expensive, Changing all the item renderers doesn't make sense.
I'm guessing that the add column would need to add something to columnMap and freeItemRenderersTable although as far as I can see neither of these seem to be used within the DataGridClass, and I would have to stop the columnRendererChanged property from changing for existing columns. Anyone able to help or point me in the correct direction? Regards, Wes
