Search for a String in a ListBox or ComboBox

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Option Explicit

Private Declare Function SendMessagebyString Lib _
"user32" Alias "SendMessageA" (ByVal hWND As Long, _
ByVal wMsg As Long, ByVal wParam As Long, _
ByVal lParam As String) As Long

Private Const LB_FINDSTRINGEXACT = &H1A2
Private Const CB_FINDSTRINGEXACT = &H158

Public Function FindStringinListControl(ListControl As Object, _
ByVal SearchText As String) As Long

'Input:
'ListControl: List or ComboBox Object
'SearchText: String to Search For

'Returns: ListIndex of Item if found
'or -1 if not found

Dim lHwnd As Long
Dim lMsg As Long

On Error Resume Next
lHwnd = ListControl.hWND

If TypeOf ListControl Is ListBox Then
lMsg = LB_FINDSTRINGEXACT
ElseIf TypeOf ListControl Is ComboBox Then
lMsg = CB_FINDSTRINGEXACT
Else
FindStringinListControl = -1
Exit Function
End If

FindStringinListControl = SendMessagebyString _
(lHwnd, lMsg, -1, SearchText)

End Function

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