File : gnatcom-create-idispatch.adb
------------------------------------------------------------------------------
-- --
-- GNATCOM - Ada 95 COM/DCOM/COM+ Development Framework and Tools --
-- --
-- G N A T C O M . C R E A T E . I D I S P A T C H --
-- --
-- B o d y --
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-- $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- --
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-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or --
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-- MA 02111-1307, USA. --
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-- 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. --
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------------------------------------------------------------------------------
with GNATCOM.Errors;
package body GNATCOM.Create.IDispatch is
function LoadRegTypeLib
(rguid : access GNATCOM.Types.GUID;
wVerMajor : in Interfaces.C.unsigned_short;
wVerMinor : in Interfaces.C.unsigned_short;
lcid : in Interfaces.C.unsigned_long;
ppTLib : access GNATCOM.Types.Pointer_To_ITypeLib)
return GNATCOM.Types.HRESULT;
pragma Import (StdCall, LoadRegTypeLib, "LoadRegTypeLib");
function DispGetIDsOfNames
(pTInfo : GNATCOM.Types.Pointer_To_ITypeInfo;
rgszNames : GNATCOM.Types.Pointer_To_Pointer_To_char;
cNames : Interfaces.C.unsigned;
rgDispId : GNATCOM.Types.Pointer_To_long)
return GNATCOM.Types.HRESULT;
pragma Import (StdCall, DispGetIDsOfNames, "DispGetIDsOfNames");
function DispInvoke
(uthis : GNATCOM.Types.Pointer_To_Void;
pTInfo : GNATCOM.Types.Pointer_To_ITypeInfo;
dispIdMember : Interfaces.C.long;
wFlags : Interfaces.C.unsigned_short;
pparams : GNATCOM.Types.Pointer_To_DISPPARAMS;
pVarResult : GNATCOM.Types.Pointer_To_VARIANT;
pExcepInfo : GNATCOM.Types.Pointer_To_EXCEPINFO;
puArgErr : GNATCOM.Types.Pointer_To_unsigned)
return GNATCOM.Types.HRESULT;
pragma Import (StdCall, DispInvoke, "DispInvoke");
------------
-- Adjust --
------------
procedure Adjust (This : in out IDispatch_Type) is
use type GNATCOM.Types.Pointer_To_ITypeInfo;
Result : Interfaces.C.unsigned_long;
begin
if This.Type_Information /= null then
Result := This.Type_Information.Vtbl.AddRef (This.Type_Information);
end if;
end Adjust;
--------------
-- Finalize --
--------------
procedure Finalize (This : in out IDispatch_Type) is
use type GNATCOM.Types.Pointer_To_ITypeInfo;
Result : Interfaces.C.unsigned_long;
begin
if This.Type_Information /= null then
Result := This.Type_Information.Vtbl.Release (This.Type_Information);
This.Type_Information := null;
end if;
end Finalize;
-------------------
-- GetIDsOfNames --
-------------------
function GetIDsOfNames
(Data : access IDispatch_Type;
rgszNames : in GNATCOM.Types.Pointer_To_Pointer_To_char;
cNames : in Interfaces.C.unsigned;
rgdispid : in GNATCOM.Types.Pointer_To_long)
return GNATCOM.Types.HRESULT
is
begin
return DispGetIDsOfNames (Data.Type_Information,
rgszNames,
cNames,
rgdispid);
end GetIDsOfNames;
-----------------
-- GetTypeInfo --
-----------------
function GetTypeInfo
(Data : access IDispatch_Type;
itinfo : in Interfaces.C.unsigned;
pptinfo : in GNATCOM.Types.Pointer_To_Pointer_To_Void)
return GNATCOM.Types.HRESULT
is
use type Interfaces.C.unsigned_long;
use type Interfaces.C.unsigned;
use type GNATCOM.Types.Pointer_To_ITypeInfo;
Result : Interfaces.C.unsigned_long;
begin
if itinfo /= 0 then
return GNATCOM.DISP_E_BADINDEX;
end if;
if Data.Type_Information /= null then
Result := Data.Type_Information.Vtbl.AddRef (Data.Type_Information);
end if;
pptinfo.all := Data.Type_Information'Address;
return GNATCOM.S_OK;
end GetTypeInfo;
----------------------
-- GetTypeInfoCount --
----------------------
function GetTypeInfoCount (pctinfo : GNATCOM.Types.Pointer_To_unsigned)
return GNATCOM.Types.HRESULT
is
begin
pctinfo.all := 1;
return GNATCOM.S_OK;
end GetTypeInfoCount;
----------------
-- Initialize --
----------------
procedure Initialize (This : in out IDispatch_Type) is
use type GNATCOM.Types.Pointer_To_ITypeInfo;
Result : Interfaces.C.unsigned_long;
Lib : aliased GNATCOM.Types.Pointer_To_ITypeLib;
begin
if This.Type_Information = null then
GNATCOM.Errors.Error_Check (LoadRegTypeLib
(This.LIB_IID,
1, 0, 0,
Lib'Access));
GNATCOM.Errors.Error_Check (Lib.Vtbl.GetTypeInfoOfGuid
(Lib,
This.IID,
This.Type_Information'Unchecked_Access));
Result := Lib.Vtbl.Release (Lib);
end if;
end Initialize;
------------
-- Invoke --
------------
function Invoke
(This : access GNATCOM.Create.COM_Interface.COM_Interface_Type;
Data : access IDispatch_Type;
dispidMember : in Interfaces.C.long;
wFlags : in Interfaces.C.unsigned_short;
pdispparams : in GNATCOM.Types.Pointer_To_DISPPARAMS;
pvarResult : in GNATCOM.Types.Pointer_To_VARIANT;
pexcepinfo : in GNATCOM.Types.Pointer_To_EXCEPINFO;
puArgErr : in GNATCOM.Types.Pointer_To_unsigned)
return GNATCOM.Types.HRESULT
is
begin
return DispInvoke (This.all'Address,
Data.Type_Information,
dispidMember,
wFlags,
pdispparams,
pvarResult,
pexcepinfo,
puArgErr);
end Invoke;
end GNATCOM.Create.IDispatch;