Firemonkey: TGrid usage on Embarcadero C++ Builder XE3

Question

I\'m try to build a tool that reads data from a database and displays it as a table using a TGrid in Firemonkey. I need to use different types of columns like TCheckColumn and T

Answer 1

I can't give C++ code but a Delphi example should be easy enough to translate.

You get and set all cell values the same way, by listening for the OnGetData and OnSetData events, get take/give values of type TValue (XE3 and later). It's just a case of returning the appropriate type in the TValue:

uses System.RTTI;

procedure Form1.Grid1GetValue(Sender: TObject;const Col, Row: Integer;var Value: TValue);
begin
  if Col = 1 then
    Value := TValue.From(1)
  else if Col = 2 then
    Value := TValue.From('Hello')
  else if Col = 3 then
    Value := Tvalue.From(1.0);
end;

procedure Form1.Grid1SetValue(Sender: TObject;const Col, Row: Integer;const Value: TValue);
begin
  if Col = 1 then
    I := Value.As
  else if Col = 2 then
    St := Value.As
  else if Col = 3 then
    Si := Value.As;
end;

As far as I can tell a popup menu can't accept or give data.