este problema foi resolvido no forum ingles
solução
uses windows;
var
title: PChar = 'hello, world test';
content: PChar = 'hello, world';
begin
{$asmmode intel}
asm
push dword 0 // MB_OK
push title
push content
push dword 0 // HWND of desktop
call MessageBoxA // note that you have to know EXACTLY the symbol to call
end;
end.
código do usuário Leledumbo