/*********************************************************************
* Copyright (C) 2000 by Progress Software Corporation ("PSC"),       *
* 14 Oak Park, Bedford, MA 01730, and other contributors as listed   *
* below.  All Rights Reserved.                                       *
*                                                                    *
* The Initial Developer of the Original Code is PSC.  The Original   *
* Code is Progress IDE code released to open source December 1, 2000.*
*                                                                    *
* The contents of this file are subject to the Possenet Public       *
* License Version 1.0 (the "License"); you may not use this file     *
* except in compliance with the License.  A copy of the License is   *
* available as of the date of this notice at                         *
* http://www.possenet.org/license.html                               *
*                                                                    *
* Software distributed under the License is distributed on an "AS IS"*
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. You*
* should refer to the License for the specific language governing    *
* rights and limitations under the License.                          *
*                                                                    *
* Contributors:                                                      *
*                                                                    *
*********************************************************************/

/**************************************************************************
    Procedure:  _getwver.p

    Purpose:    Calls the Windows API to get the version of MS-Windows.
                For Windows 3.1 returns 3.10
                For Windows 95  returns 3.95
                
                On WIN32
                For Windows 95  returns 4.00
                For Windows NT  returns 3.51

    Syntax :    RUN adecomm/_getwver.p (OUTPUT WinVer ).

    Parameters:
        Winver   : returns the Windows version

    Notes  :
    Author : Gerry Seidl
    Date   : 11/22/95

    Modified on 01/15/96 by gfs - ported to WIN32.
    
**************************************************************************/
DEFINE OUTPUT PARAMETER WinVer   AS DECIMAL NO-UNDO INIT 0.
DEFINE VARIABLE         RawVer   AS INTEGER NO-UNDO.

IF LOOKUP(SESSION:WINDOW-SYSTEM,"MS-WINDOWS,MS-WIN95") = 0 THEN RETURN.

IF OPSYS EQ "WIN32" THEN DO: /* 32bit version */
  DEFINE VARIABLE lpVersionInfo AS MEMPTR.

  SET-SIZE(lpVersionInfo)   = 148.
  PUT-LONG(lpVersionInfo,1) = 148.

  RUN GetVersionExA (INPUT-OUTPUT lpVersionInfo).
  ASSIGN WinVer = get-long(lpVersionInfo,5) + (get-long(lpVersionInfo,9) / 100).

  SET-SIZE(lpVersionInfo) = 0.

END.
ELSE DO: /* 16bit version */
  RUN GetVersion (OUTPUT RawVer).

  ASSIGN WinVer = (RawVer MOD 256) + (((RawVer / 256 ) MOD 265) / 100).
END.

/* Call to Windows API */
PROCEDURE GetVersionExA EXTERNAL "kernel32.dll":
  DEFINE INPUT-OUTPUT PARAMETER lpVersionInfo AS MEMPTR.
END.

PROCEDURE GetVersion EXTERNAL "krnl386.exe":
  DEFINE RETURN PARAMETER RawVer AS SHORT.
END.