FMXGrid column dragging question

FNC TMS FNC UI Pack
1

Hi,
I'm recently installed FMX UI Pack and am learning FMX Grid.  I have 5 columns.  I set column0 to "fixed" and enabled ColumnDragging.  I want column0 kept unchanged and always on the left.  I'd like to prevent users from dragging column0 or from dragging other columns to column0.  Is there a way to do this?  Thanks in advance.

2

Hi, 


the grid has an OnCanDragColumn event that can determine if a column can be dragged or not.
3

Thanks.  OnCanDragColumn is not in the Developers Guide but I found it in Rad Studio Object Inspector.  I see a OnCanInsertRow event.  Is there something similar for columns I could use to prevent dragging column3 to column0?

4

The OnCanDragColumn is specifically to allow/disallow dragging of columns. If you'll need the same for rows, you can use the OnCanDragRow

5

OnCanDragColumn works to prevent users from dragging column0.  Users should be able to drag other columns anywhere except column0. OnCanDragColumn doesn't help with that.  I tried OnCanAppendColumn but that doesn't get called during dragging.  I see an OnColumnDragged event but it's not mentioned in the Developers Guide or in any posts here.  How does it work?

6

For anyone else who might be interested, this is what I came up with to stop users from dragging columns to column0:
void __fastcall TTopForm::EditGroupGridColumnDragged(TObject *Sender, int FromCol,
          int ToCol)
{
    if (!ToCol)
    {
        // Dragging to column0, put it back where it came from
    EditGroupGrid->MoveColumn(ToCol, FromCol);
    }
}

7

Hi, 


Thank you for your feedback on this matter.