VBA to determine column letter of currently selected cell

Dear Experts:

this nice macro, courtesy by rorya from EE, inserts graphics into Column D, linking them. The network paths for all these graphics (hyperlinks) are all located in Column C.

This great macro works just fine.

Could somebody help me tweak this code with the following requirements:

Line 15: The column letter should not be hard coded (that was my initial requirement) but dynamic, i.e. line 15 should be based on the column of the currently selected cell, ie. the column letter is to be dynamic.

Help is much appreciated. Thank you very much in advance.

Regards, Andreas

Sub InsertPictures_Linked_To_File()

' by rorya from EE

   Dim C                           As Range
   Dim Image                       As Picture
   
 If MsgBox("Would you like to add pictures to the active worksheet, linking them?" & vbCrLf & vbCrLf & _
 "There must be network paths as hyperlinks to draw the picture from!", vbQuestion + vbYesNo, "Insert Pictures into Column D") = vbNo Then
        Exit Sub
        End If

  On Error Resume Next
   
   For Each C In Range(Range("C2"), Range("C" & Rows.Count).End(xlUp))
      C.Offset(0, 1).Activate
            Set Image = ActiveSheet.Pictures.Insert(C.Value2) 'linktofile:=msoFalse
      With Image
         If .Height > Application.CentimetersToPoints(4) Then _
                  .ShapeRange.ScaleHeight Application.CentimetersToPoints(4) / .Height, msoCTrue
                  .TopLeftCell.RowHeight = Image.Height + 10

         If .Height > .Width Then
            With .ShapeRange
               .Rotation = 90
               .IncrementLeft .Height / 2 - .Width / 2
               .IncrementTop .Width / 2 - .Height / 2 + 5
            End With
        .TopLeftCell.RowHeight = Image.Width + 10
        Else: .ShapeRange.IncrementTop (5)
         End If
      End With
   Next
End Sub

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