Thursday, April 14, 2011

VBA - Controlling Form Appearance via User Access

We've added some custom functionality to several of our Elite forms recently using Visual Basic for Applications (VBA). As with many things Elite, there's more than one way to accomplish the goal. In this case, we only wanted certain users to have access to the custom functionality. The popular method that is included in your Elite documentation would be to set the users up in a group and make the VBA changes just for that group. I didn't particularly want to go down that route for several reasons, so what I settled on was controlling the visibility of the custom items via a user access setting. In the case below, it is u85: the ability to access Queues in Reports & Queues. The custom control is set to visible on the form, and if the user does not have access to queues, then the control is hidden.
Private Sub EisVBAForm_FormInitialize()

'Set SYS Level to 1 and User to 0
'Elite setups give access if User Level is higher than SYS
'so we're starting with denying access
'Then evaluating their actual access levels
SysLevel = 1
UserLevel = 0

'Get SYS Access Level
strSQL = "SELECT u85 FROM uaccess WHERE uname='SYS'"

Set rsUaccess = DB.OpenResults(strSQL)

If rsUaccess.Count = 0 Then
    MsgBox "User Access Error." & vbCrLf & "Contact System Administrator", vbOKOnly + vbExclamation, "User Access Error"
    SysLevel = rsUaccess.Value(0)
'Get User Access Level
    strSQL = "SELECT u85 FROM uaccess WHERE uname='" & Trim(UserID) & "'"
    Set rsUaccess = DB.OpenResults(strSQL)
    If rsUaccess.Count > 0 Then
        UserLevel = rsUaccess.Value(0)
    End If
'Compare the two, if User is lower than Sys, Hide a control on the form
    If UserLevel < SysLevel Then
        cmdDistProf.Visible = False
    End If
End If

Set rsUaccess = Nothing

End Sub

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