As for the RttiType problem returning only nil, this probably occurs for one reason: in your test, you did not instantiate the class at any time. The compiler, because it never has a reference to this class (because it is not an instance at all), simply removes it from the information as a form of optimization. See the two examples below. The behavior is different when you have the class instantiated at some point in your code or not.
Suppose the following class:
type
TTest = class
public
procedure Test;
end;
and the following code below:
var
LContext: TRttiContext;
LType: TRttiType;
LTest: TTest;
begin
LContext := TRttiContext.Create;
for LType in LContext.GetTypes do
begin
if LType.IsInstance then
begin
WriteLn(LType.Name);
end;
end;
end;
so far, TTest class information is not available for use by RTTI. However, when we create at some point, within the application, then a reference is created for it within the compile, which makes this information available:
var
LContext: TRttiContext;
LType: TRttiType;
LTest: TTest;
begin
LTest := TTest.Create; //Here i´m using TTest.
//Could be in another part of the program
LContext := TRttiContext.Create;
for LType in LContext.GetTypes do
begin
if LType.IsInstance then
begin
WriteLn(LType.Name);
end;
end;
end;
At that point, if you use LContext.FindType ('TTest'), there will not be a nil return, because the compiler kept reference to the class. This explains the behavior you were having in your tests.
