Microsoft KB Archive/210106

= ACC2000: How to Determine the Current Screen Resolution =

Article ID: 210106

Article Last Modified on 10/11/2006

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APPLIES TO


 * Microsoft Access 2000 Standard Edition

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This article was previously published under Q210106



Advanced: Requires expert coding, interoperability, and multiuser skills.

This article applies to a Microsoft Access database (.mdb) and to a Microsoft Access project (.adp).



SUMMARY
This article shows you how to create a sample user-defined Visual Basic for Applications function to determine the current screen resolution. You can use this function to determine if you are running in standard VGA mode (640 x 480) or Super VGA mode (800 x 600, 1024 x 768 or 1600 x 1200).

Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements.



MORE INFORMATION
The following example demonstrates how to create and use the sample GetScreenResolution function.

NOTE: You may have some Microsoft Windows API functions defined in an existing Microsoft Access library; therefore, your declarations may be duplicates. If you receive a duplicate procedure name error message, remove or comment out the declarations statement in your code.

  Create a new module, and type the following Declarations and function: '***************************************************************** ' DECLARATIONS SECTION '*****************************************************************

Option Explicit

Type RECT x1 As Long y1 As Long x2 As Long y2 As Long End Type

' NOTE: The following declare statements are case sensitive.

Declare Function GetDesktopWindow Lib "User32" As Long Declare Function GetWindowRect Lib "User32" _ (ByVal hWnd As Long, rectangle As RECT) As Long

'***************************************************************** ' FUNCTION: GetScreenResolution ' ' PURPOSE: '  To determine the current screen size or resolution. ' ' RETURN: '  The current screen resolution. Typically one of the following: '     640 x 480 '     800 x 600 '    1024 x 768 ' '***************************************************************** Function GetScreenResolution as String

Dim R As RECT Dim hWnd As Long Dim RetVal As Long

hWnd = GetDesktopWindow RetVal = GetWindowRect(hWnd, R)  GetScreenResolution = (R.x2 - R.x1) & "x" & (R.y2 - R.y1)

End Function  On the View menu, click Immediate Window.  Type the following line in the Immediate Window, and then press ENTER: ? GetScreenResolution

Note that the current screen resolution is displayed in the Immediate window. If the current resolution is standard VGA, the following is displayed in the Immediate window:

640x480



