Microsoft KB Archive/148395

= ACC: How to Determine the Current Screen Resolution (95/97) =

Article ID: 148395

Article Last Modified on 1/19/2007

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APPLIES TO


 * Microsoft Access 95 Standard Edition
 * Microsoft Access 97 Standard Edition

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This article was previously published under Q148395



SUMMARY
Advanced: Requires expert coding, interoperability, and multi-user skills.

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 or 1024 x 768).

This article assumes that you are familiar with Visual Basic for Applications and with creating Microsoft Access applications using the programming tools provided with Microsoft Access. For more information about Visual Basic for Applications, please refer to your version of the "Building Applications with Microsoft Access" manual.



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 Debug window. Type the following line in the Debug window, and then press ENTER:

? GetScreenResolution

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

640x480

