Bresenham's line algorithm Visual basic code

An example of Bresenham's line algorithm in Visual Basic follows. The "Swap" procedure is not shown.

Private Sub BresLine(InitialX As Long, InitialY As Long, FinalX As Long, FinalY As Long)
   ' Bresenham's line algorithm for Microsoft Visual Basic 6.0
   ' Implementation by Robert Lee  July, 2002 Public Domain
   Dim Steep As Boolean
   Dim DeltaX As Long, DeltaY As Long, Delta As Long
   Dim StepX As Long, StepY As Long
   Dim Coord As Long

   Steep = False
   DeltaX = Abs(FinalX - InitialX)
   If (FinalX - InitialX) > 0 Then
       StepX = 1
   Else
       StepX = -1
   End If
   DeltaY = Abs(FinalY - InitialY)
   If (FinalY - InitialY) > 0 Then
       StepY = 1
   Else
       StepY = -1
   End If
   If DeltaY > DeltaX Then
       Steep = True
       Swap InitialX, InitialY
       Swap DeltaX, DeltaY
       Swap StepX, StepY
   End If
   Delta = (DeltaY * 2) - DeltaX
   For Coord = 0 To DeltaX - 1
       If Steep Then
           Me.PSet (InitialY, InitialX)
       Else
           Me.PSet (InitialX, InitialY)
       End If
       While Delta >= 0
           InitialY = InitialY + StepY
           Delta = Delta - (DeltaX * 2)
       Wend
       InitialX = InitialX + StepX
       Delta = Delta + (DeltaY * 2)
   Next Coord
   Me.PSet (FinalX, FinalY)
End Sub