How can I set/get property value through RTTI for compex things like TStringGrid.Cells?

Question

I have values stored in xml and lua code and accessing object\'s properties through RTTI.

var
  o, v: TValue; // o is current object
  a: TStringDynArray; // par         


        

Answer 1

Here's the simplest example I can think off to get and set the values from a string grid using RTTI:

var
  ctx: TRttiContext;
  rttitype: TRttiType;
  rttiprop: TRttiIndexedProperty;
  value: TValue;
....
rttitype := ctx.GetType(StringGrid1.ClassType);
rttiprop := rttitype.GetIndexedProperty('Cells');
value := rttiprop.GetValue(StringGrid1, [1, 1]);
rttiprop.SetValue(StringGrid1, [1, 1], value.ToString + ' hello');

I excised the error checking for the sake of simplicity. I'm going to assume that you already know how to check for errors.