File : gnatcom-initialize.adb
------------------------------------------------------------------------------
-- --
-- GNATCOM - Ada 95 COM/DCOM/COM+ Development Framework and Tools --
-- --
-- G N A T C O M . I N I T I A L I Z E --
-- --
-- B o d y --
-- --
-- $Revision: 1.3 $
-- --
-- Copyright (C) 1999, 2000, 2001 David Botton --
-- --
-- This is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. It is distributed in the hope that it will be useful, but WITHOUT --
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or --
-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with this; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- More information about GNATCOM and the most current public version can --
-- be located on the web at http://www.adapower.com/gnatcom --
-- --
-- Support for GNATCOM is available from Ada Core Technologies, Inc. --
-- --
-- In the U.S., contact Ada Core Technologies at: --
-- Tel: +1 (212) 620 7300 ext 117 --
-- Fax: +1 (212) 807 0162 --
-- Email: sales@gnat.com --
-- --
-- In Europe and elsewhere, contact ACT Europe at: --
-- Tel: +33 1 49 70 67 16 --
-- Fax: +33 1 49 70 05 52 --
-- Email: sales@act-europe.fr --
------------------------------------------------------------------------------
with Interfaces.C;
with System;
with GNATCOM.Types;
package body GNATCOM.Initialize is
use type GNATCOM.Types.HRESULT;
function CoInitialize
(pvReserved : Types.Pointer_To_Void := System.Null_Address)
return GNATCOM.Types.HRESULT;
pragma Import (StdCall, CoInitialize, "CoInitialize");
COINIT_MULTITHREADED : constant := 0;
function CoInitializeEx
(pvReserved : Types.Pointer_To_Void := System.Null_Address;
dwCoInit : Interfaces.C.unsigned_long := COINIT_MULTITHREADED)
return GNATCOM.Types.HRESULT;
pragma Import (StdCall, CoInitializeEx, "CoInitializeEx");
procedure CoUninitialize;
pragma Import (StdCall, CoUninitialize, "CoUninitialize");
RPC_E_CHANGED_MODE : constant := 16#80010106#;
-- Attempt to re-initilalize in wrong mode
procedure InterlockedIncrement
(lpAddend : access Interfaces.C.long);
pragma Import (StdCall, InterlockedIncrement, "InterlockedIncrement");
procedure InterlockedDecrement
(lpAddend : access Interfaces.C.long);
pragma Import (StdCall, InterlockedDecrement, "InterlockedDecrement");
--------------------
-- Initialize_COM --
--------------------
procedure Initialize_COM is
begin
if CoInitialize = RPC_E_CHANGED_MODE then
raise CHANGED_MODE_ERROR;
end if;
InterlockedIncrement (Initialize_Count'Access);
end Initialize_COM;
-----------------------------------
-- Initialize_COM_Multi_Threaded --
-----------------------------------
procedure Initialize_COM_Multi_Threaded is
begin
if CoInitializeEx = RPC_E_CHANGED_MODE then
raise CHANGED_MODE_ERROR;
end if;
InterlockedIncrement (Initialize_Count'Access);
end Initialize_COM_Multi_Threaded;
----------------------
-- Uninitialize_COM --
----------------------
procedure Uninitialize_COM is
begin
CoUninitialize;
InterlockedDecrement (Initialize_Count'Access);
end Uninitialize_COM;
end GNATCOM.Initialize;