XL: Determining Which DLLs Are Registered

• Microsoft Excel for Windows, versions 5.0, 5.0c
• Microsoft Excel for Windows 95, versions 7.0, 7.0a
• Microsoft Excel 97 for Windows

SUMMARY

In Microsoft Excel, to determine which DLLs are registered, you can do either of the following:

• Click "About Microsoft Excel" on the Help menu to display a list of all DLLs currently registered on your system.

  NOTE: Microsoft System Info is a Setup option. If it is not available on your system, rerun Setup, click the Complete/Custom button, select the Tools option, and select the System Information Checking option.

  -or-

• Use a Visual Basic statement to return a list of all the DLLs and XLLs that provide functions registered in Microsoft Excel.

To use Microsoft System Info to display a list of registered DLLs

1. On the Help menu, click About Microsoft Excel.

2. Click the System Info button.

3. From the Choose a Category list, select System DLLs.

To use a Visual Basic procedure

You can use the RegisteredFunctions property to return an array of every Microsoft Excel function that is provided by DLLs and other code resources, along with the name of the associated file.

Microsoft provides examples of Visual Basic for Applications procedures for illustration only, without warranty either expressed or implied, including, but not limited to the implied warranties of merchantability and/or fitness for a particular purpose. The Visual Basic procedures in this article are provided 'as is' and Microsoft does not guarantee that they can be used in all situations. While Microsoft support engineers can help explain the functionality of a particular macro, they will not modify these examples to provide added functionality, nor will they help you construct macros to meet your specific needs. If you have limited programming experience, you may want to consult one of the Microsoft Solution Providers. Solution Providers offer a wide range of fee-based services, including creating custom macros. For more information about Microsoft Solution Providers, call Microsoft Customer Information Service at (800) 426-9400.

The following example code creates a three-column array of all registered functions in Microsoft Excel, where column 1 displays the name of the DLL or code resource; column 2 displays the name of the procedure in the DLL or code resource; and column 3 displays strings specifying the data types of the return values, and the number and data types of the arguments:

Sub GenerateDLLList()
   theArray = Application.RegisteredFunctions
      If IsNull(theArray) Then
         MsgBox "No registered functions"
      Else
      For i = 1 To UBound(theArray)
         For j = 1 To 3
            Cells(i, j).Formula = theArray(i, j)
         Next j
      Next i
   End If
End Sub

   Application.SendKeys "%h"
   Application.SendKeys "a"
   Application.SendKeys "%s"
   Application.SendKeys "%s"
   Application.SendKeys "{ESC}"
   Application.SendKeys "{ESC}"
   Application.SendKeys "{ESC}"