Article ID: 109723 - Last Review: May 6, 2003 - Revision: 2.0 ACC: How to Determine Windows and MS-DOS VersionsThis article was previously published under Q109723 SUMMARY
Advanced: Requires expert coding, interoperability, and multiuser skills.
This article describes how you can use the GetVersion() Windows API function to return the version numbers of Microsoft Windows and MS-DOS running on the computer. This article assumes that you are familiar with Access Basic and with creating Microsoft Access applications using the programming tools provided with Microsoft Access. For more information on Access Basic, please refer to the "Introduction to Programming" manual in Microsoft Access version 1.x, or the "Building Applications" manual, Chapter 3, "Introducing Access Basic" in version 2.0. MORE INFORMATION
The following example demonstrates how to use the GetVersion() Windows
API function in the KERNEL.EXE dynamic link library (DLL) included with
Windows:
NOTE: In the following sample code, an underscore (_) is used as a line- continuation character. Remove the underscore when re-creating this code in Access Basic.
'====================================
' Global Declarations
'====================================
Option Explicit
Declare Function GetVersion Lib "Kernel" () As Long
Function SysVersions ()
Dim ver As Long, WinVer As Long, DosVer As Long
Dim WindowsVersion As String, DosVersion As String
ver = GetVersion()
WinVer = ver And &HFFF&
WindowsVersion = Format((WinVer Mod 256) + _
((WinVer \ 256) / 100), "Fixed")
DosVer = ver \ &H10000
DosVersion = Format((DosVer \ 256) + _
((DosVer Mod 256) / 100), "Fixed")
MsgBox "Windows Version: " & WindowsVersion _
& Chr(13) & "DOS Version: " & DosVersion
End Function
The GetVersion() function returns a value that is a DWORD (double word), which translates into a long integer (32-bit value) in Access Basic. The low-order word returns the major (low byte) and minor (high byte) Windows version number, and the high-order word returns the major (high byte) and minor (low byte) MS-DOS version number. REFERENCES
Microsoft Windows Software Development Kit "Programmer's Reference
Volume 2: Functions," pages 469-470
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