gridsort: introduce XGridColumn::DataModelIndex. this allows for column removal/insertion at the GridColumnModel, without the need to touch the GridDataModel
gridsort: introduce XGridColumn::DataModelIndex. this allows for column removal/insertion at the GridColumnModel, without the need to touch the GridDataModel
JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core