AdvStringGrid: AutoSizeColumns() and node column

VCL TMS VCL UI Pack
1

I have a number of AdvStringGrids with some having nodes and no text on the first column. AutoSizeColumns(true) nicely formats the grid for all but the nodes columns: just the header caption is taken into account, the with of the tree structure is not. ColWidth[] does not show an effect. Am I missing something, how can I properly set this for any node tree width?


Thanks in advance!
Matthias
2

We've investigated this and seen a shortcoming in this area. We've applied an improvement now and the next update will handle this better.

3

Great! Thanks so much, looking forward to the next version :-)

4

Almost working - I have updated and rebuilt my application, the grid column is now fully taking care of the node tree width and sizes that nicely. However: Now the header text of the column is not considered :-)


Row[0] contains 'Nodes' as header, nesting level is up to 3. Now the header is broken into 'Nod' on the first line of the cell, 'es' on the second. If I have 5 levels, the column is wide enough to show 'Nodes' on the single line.

Looks like something like a "max(ColTextWidth, NodeTreeWidth)" is missing somewhere to get required width.

One final thing: on my last grid row I am on 3rd node level, but below that horizontal node line there is suddenly an additional line going down to the grid border in a nearly 45° angle. Can send a screenshot via mail if preferred.
5

I have seen the 1st issue and applied an improvement. Next update will address this. For an urgent fix, contact us by email.

I was unable to reproduce the last issue, with the 45° angle though. Do you have exact instructions for reproducing this?
6
Small sample: create a form with an AdvStringGrid, code as follows:

procedure TMainForm.FormCreate(Sender: TObject);
begin

  AdvStrGrid.RowCount := 11;   // 11: odd looking, 12: looks okay
  AdvStrGrid.ColCount := 2;

  //  use nonsense span, should be rejected?
  AdvStrGrid.AddNode (1, -1);
  AdvStrGrid.AddNode (2, 0);
  AdvStrGrid.AddNode (3, 1);  // connects to next node block?!?

  //  proper node display.
  AdvStrGrid.AddNode (4, 3);  // connects to node block starting at idx 7 ?!?
  AdvStrGrid.AddNode (5, 2);  //   just because no "node-free" line on 7...

  //  proper node display.
  AdvStrGrid.AddNode (7, 4);
  AdvStrGrid.AddNode (8, 3);
  AdvStrGrid.AddNode (9, 2);

  //  forcing column width based on header text...
  //AdvStrGrid.AllCells[0, 0] := 'SLIGHTLY WIDER COLUMN';
  //  forcing column width based on node text...
  AdvStrGrid.AllCells[0, AdvStrGrid.RowCount-1] := 'SLIGHTLY WIDER COLUMN';

end;

Things I think are a bit odd:
  • When calling AddNode() with a span of less than 2, this should not create a node - looks odd or links through incorrectly
  • When creating two blocks of nodes that do not have a non-node row between them, the blocks are connected (comment the node creation for (7,3) for the clean one)
  • When a node block width level higher than 2 ends on the last grid row, strange node lines are introduced. Change RowCount at start for the effect
7

Thanks for the details. We could see the issues and have applied improvements. An update will follow shortly.