If you don't need ARM compiler support, you can find another solution here.
With inline asembler, you can access private field or method, easily.
I think David's answer is better in most case, but if you need a quick solution for a huge class, this method could be more useful.
Update(June 17): I've just noticed, I forgot to share his sample code for accessing private fields from his post. sorry.
unit UnitA;
type
THoge = class
private
FPrivateValue: Integer;
procedure PrivateMethod;
end;
end.
unit UnitB;
type
THogeHelper = class helper for THoge
public
function GetValue: Integer;
procedure CallMethod;
end;
function THogeHelper.GetValue: Integer;
asm
MOV EAX,Self.FPrivateValue
end;
procedure THogeHelper.CallMethod;
asm
CALL THoge.PrivateMethod
end;
Here is his sample code for calling private method.
type
THoge = class
private
procedure PrivateMethod (Arg1, Arg2, Arg3 : Integer);
end;
// Method 1
// Get only method pointer (if such there is a need to assign a method pointer to somewhere)
type
THogePrivateProc = procedure (Self: THoge; Arg1, Arg2, Arg3: Integer);
THogePrivateMethod = procedure (Arg1, Arg2, Arg3: Integer) of object;
function THogeHelper.GetMethodAddr: Pointer;
asm
{$ifdef CPUX86}
LEA EAX, THoge.PrivateMethod
{$else}
LEA RAX, THoge.PrivateMethod
{$endif}
end;
var
hoge: THoge;
proc: THogePrivateProc;
method: THogePrivateMethod;
begin
// You can either in here of the way,
proc := hoge.GetMethodAddr;
proc (hoge, 1, 2, 3);
// Even here of how good
TMethod (method) .Code := hoge.GetMethodAddr;
TMethod (method) .Data := hoge;
method (1, 2, 3) ;
end;
// Method 2
// To jump (here is simple if you just simply call)
procedure THogeHelper.CallMethod (Arg1, Arg2, Arg3 : Integer);
asm
JMP THoge.PrivateMethod
end;
unit UnitA;
type
THoge = class
private
FPrivateValue: Integer;
procedure PrivateMethod;
end;
end.
delphi-10-berlin- just remove it and let it die. – Atalanti