Window registry contains the information about settings of system hardware and installed software and their associate values. The registry is organized in hierarchical branches structure and data values are stored as keys. In general it is not recommended to make changes to registry because programs and applications often make all the necessary changes automatically. Incorrect changes to the registry of your computer can cause the computer to stop working. However, if a corrupt file is listed in the registry, you may need to make changes. To identify, firstly we need to read the registry name and value. For that we are creating a function which will read the registry key and value from the registry database.
To read the registry database we are using the window script host method. It provides access to the native window shell. The object run a program locally and helps to manipulate the contents of registry. We are creating VBA function that will read the registry name and value, and show the value on MS Access message box. After implementing we have to pass the path in window scrip host object as shown in fig 1.1.
Read Function match the input registry name with registry database list, if the name matches then the value get printed as shown in fig 1.2.
And if not match then it will show not found message as shown in fig 1.3.
Option Compare Database Public function CHECK_REGKEY() Dim RgtrKey As String Dim VAlKey As String Dim Outkey As Integer RgtrKey = InputBox("Enter the name of registry key", "Registry Key") If ClRgtrKey(RgtrKey) = True Then VAlKey = RDRgtrKey(RgtrKey) Outkey = MsgBox("The registry value for the key """ & RgtrKey & """" & vbCr & "is """ & VAlKey & """") Else Outkey = MsgBox("Registry key """ & RgtrKey & """not found.") End If End function Public Function ClRgtrKey(entr_RgtrKey As String) As Boolean Dim objShell As Object On Error GoTo ErrorHandler Set objShell = CreateObject("WScript.Shell") objShell.RegRead entr_RgtrKey ClRgtrKey = True Exit Function ErrorHandler: ClRgtrKey = False End Function Public Function RDRgtrKey(entr_RgtrKey As String) As String Dim objShell As Object On Error Resume Next Set objShell = CreateObject("WScript.Shell") RDRgtrKey = objShell.RegRead(entr_RgtrKey) End Function
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