I assume you have goRowSelect in the grid options. This forces the selected col to be the first non-fixed column, so whenever the row changes the code to scroll the selected cell into view forces the first non-fixed column to be visible.
Since goRowSelect also effectively disables the horizontal scrolling with the keyboard I try to live without it. You can use custom drawing of the grid cells to show all cells of the current row with the proper colours for selected cells, even though only one cell is really selected. I use this also to show different colours depending on whether the grid is focused or not, similar to what a standard tree control does. For this to work properly you do however need to handle not only grid cell navigation events, but some other events too, like OnEnter and OnExit of the grid, OnActivate and OnDeactivate of the Application, and so on.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…