VERSION 5.00
Begin VB.Form frmUnits 
   Caption         =   "Units Conversion"
   ClientHeight    =   1485
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4065
   LinkTopic       =   "Form1"
   ScaleHeight     =   1485
   ScaleWidth      =   4065
   StartUpPosition =   3  'Windows Default
   Begin VB.ComboBox cboConversionTypes 
      Height          =   315
      Left            =   1560
      Style           =   2  'Dropdown List
      TabIndex        =   5
      Top             =   120
      Width           =   2415
   End
   Begin VB.CommandButton cmdConvert 
      Caption         =   "Convert"
      Enabled         =   0   'False
      Height          =   375
      Left            =   2640
      TabIndex        =   4
      Top             =   840
      Width           =   975
   End
   Begin VB.TextBox txtToUnits 
      Enabled         =   0   'False
      Height          =   285
      Left            =   1080
      TabIndex        =   1
      Top             =   1080
      Width           =   855
   End
   Begin VB.TextBox txtFromUnits 
      Height          =   285
      Left            =   1080
      TabIndex        =   0
      Top             =   720
      Width           =   855
   End
   Begin VB.Label Label1 
      Caption         =   "Conversion Type"
      Height          =   255
      Left            =   120
      TabIndex        =   6
      Top             =   120
      Width           =   1335
   End
   Begin VB.Label lblToUnits 
      Caption         =   "<To>"
      Height          =   255
      Left            =   120
      TabIndex        =   3
      Top             =   1080
      Width           =   975
   End
   Begin VB.Label lblFromUnits 
      Caption         =   "<From>"
      Height          =   255
      Left            =   120
      TabIndex        =   2
      Top             =   720
      Width           =   735
   End
Attribute VB_Name = "frmUnits"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
Private mastrFromUnitNames(0 To 3) As String
Private mastrToUnitNames(0 To 3) As String
Private masngMultiplicationFactors(0 To 3) As Single
Private msngChosenFactor As Single
Private Sub cmdConvert_Click()
    txtCM.Text = txtInches.Text * 2.52
End Sub
Private Sub Form_Load()
    Dim intIndex As Integer
        
    masngMultiplicationFactors(0) = 1.6093
    mastrFromUnitNames(0) = "Miles"
    mastrToUnitNames(0) = "Kilometres"
        
    masngMultiplicationFactors(1) = 0.9144
    mastrFromUnitNames(1) = "Yards"
    mastrToUnitNames(1) = "Metres"
        
    masngMultiplicationFactors(2) = 0.3048
    mastrFromUnitNames(2) = "Feet"
    mastrToUnitNames(2) = "Metres"
        
    masngMultiplicationFactors(3) = 2.52
    mastrFromUnitNames(3) = "Inches"
    mastrToUnitNames(3) = "Centimetres"
        
    For intIndex = 0 To 3
        cboConversionTypes.AddItem mastrFromUnitNames(intIndex) & " to " & mastrToUnitNames(intIndex)
    Next
        
    'Pre-select list item number 0
    cboConversionTypes.ListIndex = 0
End Sub
Private Sub txtFromUnits_Change()
    If txtFromUnits.Text = "" Then
       cmdConvert.Enabled = False
    Else
       cmdConvert.Enabled = True
    End If
End Sub
Private Sub txtFromUnits_KeyPress(KeyAscii As Integer)
    If Not IsNumeric(Chr(KeyAscii)) Then
        If KeyAscii <> 8 Then
            KeyAscii = 0
            Beep
        End If
    End If
End Sub