Merge cells in Band

[Koot33]

I want to group columns and have a heading for each group. I thought I would be able to do this with band headers but I can't see any way to do it. Any ideas?

Group 1 | Group 2
-------------------------------------------------------
G1C1 | G1C2 | G1C3 | G2C1 | G2C2 | G2C3
-------------------------------------------------------

[Yeray]

Hello,

Taking the Header_Footer example, this seems to work fine for me here:

Code: Select all

type
  THouse=record
  public
    Address : String;
    Floors  : Integer;
  end;

  TPerson=record
  public
    Name   : String;
    Phone   : Integer;
  end;

  TPropriety=record
  public
    House: THouse;
    Owner: TPerson;
  end;

var
  Proprieties : TArray<TPropriety>;

procedure TFormHeaderFooter.FormCreate(Sender: TObject);
begin
  SetLength(Proprieties,2);
  Proprieties[0].House.Address:='123 St';
  Proprieties[0].House.Floors:=5;
  Proprieties[0].Owner.Name:='John';
  Proprieties[0].Owner.Phone:=666777888;

  Proprieties[1].House.Address:='456 St';
  Proprieties[1].House.Floors:=2;
  Proprieties[1].Owner.Name:='Marc';
  Proprieties[1].Owner.Phone:=666777666;

  TeeGrid1.Data:=TVirtualData<TArray<TPropriety>>.Create(Proprieties);
end;

TeeGrid_Header_Footer_2018-04-04_16-19-12.png (4.3 KiB) Viewed 19698 times

[Koot33]

That does work (except for the column lines in the header). But, it is done completely automatically. My data does not fit that model so I want to know how to do that using code?

In the process of trying to figure out how to change the header text, I deleted the only entry in the "Headers" collection of the TeeGrid component. This caused unrecoverable errors in the IDE. Should I file a bug report?

[Yeray]

Hello,

That does work (except for the column lines in the header). But, it is done completely automatically. My data does not fit that model so I want to know how to do that using code?

We are investigating the options available to do this. We'll be back to you asap here.

In the process of trying to figure out how to change the header text, I deleted the only entry in the "Headers" collection of the TeeGrid component. This caused unrecoverable errors in the IDE. Should I file a bug report?

I've just added it to the public tracker. Thanks for reporting it.
http://bugs.teechart.net/show_bug.cgi?id=2026

[Yeray]

Hello,

except for the column lines in the header

You could set the format brush to paint above that line. In the same example:

Code: Select all

  TeeGrid1.Columns[0].Header.ParentFormat:=False;
  TeeGrid1.Columns[0].Header.Format.Brush.Visible:=True;
  TeeGrid1.Columns[0].Header.Format.Brush.Color:=clGray;
  TeeGrid1.Columns[1].Header.ParentFormat:=False;
  TeeGrid1.Columns[1].Header.Format.Brush.Visible:=True;
  TeeGrid1.Columns[1].Header.Format.Brush.Color:=clGray;

TeeGrid_Header_Footer_2018-04-18_14-56-13.png (3.99 KiB) Viewed 19543 times

But, it is done completely automatically. My data does not fit that model so I want to know how to do that using code?

Still investigating the options we have for doing this manually.

[Yeray]

Hello,

But, it is done completely automatically. My data does not fit that model so I want to know how to do that using code?

Still investigating the options we have for doing this manually.

As TeeGrid is designed, you only can have subcolumns using a TVirtualData array with an structure of records and subrecords as in the Header_Footer example I mentioned in my first reply in this thread.
I've made an example of doing the same with a database here.