Specifies column sizing mode. Column sizing may be performed in two ways: 

1. "Resize" mode: increase width of the column, widths of others are unchanged, but all following columns are moved. 

2. "Exchange" mode: increase width of the column and decrease width of the next column, but positions of all other columns stay unchanged.

TColumnResizeMode = (
  crResize,
  crExchange,
  crCtrlExchange
);