IChartGrid.DefaultColWidth
IChartGrid

property DefaultColWidth: Integer;

Type Library
TeeChartx

Description
Set DefaultColWidth to change the size of all columns in the grid. When DefaultColWidth is set, columns that have been resized using the mouse or by setting the ColWidths property are given the DefaultColWidth as well.

When new columns are added to the grid using the ColCount property, they are created with a width of DefaultColWidth.