How to enter data into TGrid Cells in C++ Builder or Delphi

Question

I have some difficulties in entering some data into TGrid Cells, can someone give me some code example with commentary on how to insert data into a TGrid cell? To be more precise in C++ Builder when I'm using a StringGrid I can use

StringGrid1->Cells[1][0] = "Hello world";

which will insert in the cell of the second column of the first row the "hello world" message. How can I do the same with TGrid? And how can I use TCheckColumn? I have many diffulties because I cannot find any good documentation.
I'm looking but there is no guide on this anywhere.

Answer 1

TL;DR:
You need to store the data in your own data structure, and pass it to the displayed grid via the OnGetValue event.

---

I found the answer in the link to MonkeyStyler provided by @nolaspeaker in the comments.

TGrid does not store any data internally.

You need to store the data yourself. When a cell in your grid is displayed, the OnGetValue(Sender: TObject; const Col, Row: Integer; var Value: TValue) event is fired.

It is up to you to implement an event handler for this, and return the data for the given cell.

For example, suppose you have a very simple grid that only shows "hello" in every cell of the first column and "world" in every cell of the second column.
Your OnGetValue event would look like this:

procedure MyOnGetValueHandler(Sender: TObject; const Col, Row: Integer; var Value: TValue);
begin
  if Col = 0 then
    Value := 'hello'
 else 
 if Col = 1 then
    Value := 'world';
end;