On Fri, 17 Jul 2015, silvioprog wrote:
Hello,
I need to call a method dynamically by its name over string and pass some
parameters to it. OK, I don't know if it is possibly in the current version of
the compiler, but I'm trying to do something
like this:
TMethodInvoker.Invoke(VMyObj, ['Param 1', 'Param 2', 1, True]);
I already get some paramerter informations using this code[1], that prints all
parameters and its types using RTTI.
So I have a question: how can I get the method typedata looking for it in the
VMT? Please see this:
WriteLn(HexStr(@TMyObject.Test));
WriteLn(HexStr(TMyObject.MethodAddress('Test')));
Prints the same address. But:
TI := TypeInfo(@TMyObject.Test);
WriteLn(HexStr(TI));
TI := TypeInfo(TMyObject.MethodAddress('Test'));
WriteLn(HexStr(TI));
Prints different results.
You cannot get typeinfo like that for methods.
You need to call GetPropInfo() from the typeinfo unit for published
properties/methods.
How System.TypeInfo retrieve the typeinfo from my @TMyObject.Test address? It
is done by the method address so?
No.
I took a look at the TRTTIWriter class and also in the VMT, but I don't know
how the compiler handles this informations internally, so sorry it this
question sounds nonsense. =P
You can check the reader class in classes unit.
Michael.
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