TDBGrid.OnGetCellHint determine cell

[LemonParty]

I have a TDBGrid and I want to show a specific hint for different rows. How to determine for which row hint was called?

[Bart]

OK, the signature of OnGetCellHit for DBGrid is not the same as for TStringGrid.
Maybe you can use MouseToCell() to determine the cell?

Bart

[wp]

When you want to display an individual hint for specific cells you must store these hints somewhere. I think the most natural way for a database application is to provide a separate field for the hint text. In this case you can simply read the field value and assign it to the Text output parameter of the OnGetCellHint event.

Code: Pascal  [Select][+][-]

1. procedure TForm1.DBGrid1GetCellHint(Sender: TObject; Column: TColumn;
2.   var AText: String);
3. begin
4.   case Column.Field.FieldName of
5.     'ID'   : AText := MemDataset1.FieldByName('Hint_ID').AsString;
6.     'Name' : AText := MemDataset1.FieldByName('Hint_Name').AsString;
7.   end;
8. end;

See attached project.

[LemonParty]

Thank you, wp. It works.