with win32.WinUser; use win32.WinUser;
with Interfaces.C; use Interfaces.C;
with Ada.Unchecked_Conversion;
with System;
procedure HelloWorld is
-- Just in case you were wondering, the WinMain function is replaced
-- with a package called Win32.WinMain (Take a look at win32-winmain.ads
-- for more information.
function To_LPCSTR is new Ada.Unchecked_Conversion (System.Address, Win32.LPCSTR);
Message : Char_Array := To_C("Hello World!");
Title : Char_Array := To_C("Hello Program");
RetValue : Win32.Int;
begin
RetValue:=MessageBox(System.Null_Address, To_LPCSTR(Message'Address), To_LPCSTR(Title'Address), 0);
end HelloWorld;
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