Is there a way to use a custom control inside the cells of a given column ?
At least some bitmaps ?
The feature request was "approved" since 2017 but still no news about that.
I guess you mean the following feature request: https://feedback.telerik.com/wpf/1354686-virtualgrid-add-support-for-placing-custom-controls-in-grid-s-cells
I am afraid that there is no API that allows you to add custom controls in the VirtualGrid's cells. To achieve this requirement, consider using RadGridView, instead.