In case others might find this useful, here is a class I wrote for this purpose. I use it all the time in my Access development projects. Just drop it into your project in a class module called clsLblProg
, and use it like this:
This produces a nice little progress bar:
On your form, all you need is three labels. Set the back label to the desired size and make the other two hidden. The class does the rest.
And here is the code for clsLblProg
:
Option Compare Database
Option Explicit
' By Adam Waller
' Last Modified: 12/16/05
'Private Const sngOffset As Single = 1.5 ' For Excel
Private Const sngOffset As Single = 15 ' For Access
Private mdblMax As Double ' max value of progress bar
Private mdblVal As Double ' current value of progress bar
Private mdblFullWidth As Double ' width of front label at 100%
Private mdblIncSize As Double
Private mblnHideCap As Boolean ' display percent complete
Private mobjParent As Object ' parent of back label
Private mlblBack As Access.Label ' existing label for back
Private mlblFront As Access.Label ' label created for front
Private mlblCaption As Access.Label ' progress bar caption
Private mdteLastUpdate As Date ' Time last updated
Private mblnNotSmooth As Boolean ' Display smooth bar by doevents after every update.
' This class displays a progress bar created
' from 3 labels.
' to use, just add a label to your form,
' and use this back label to position the
' progress bar.
Public Sub Initialize(BackLabel As Access.Label, FrontLabel As Access.Label, CaptionLabel As Access.Label)
On Error GoTo 0 ' Debug Mode
Dim objParent As Object ' could be a form or tab control
Dim frm As Form
Set mobjParent = BackLabel.Parent
' set private variables
Set mlblBack = BackLabel
Set mlblFront = FrontLabel
Set mlblCaption = CaptionLabel
' set properties for back label
With mlblBack
.Visible = True
.SpecialEffect = 2 ' sunken. Seems to lose when not visible.
End With
' set properties for front label
With mlblFront
mdblFullWidth = mlblBack.Width - (sngOffset * 2)
.Left = mlblBack.Left + sngOffset
.Top = mlblBack.Top + sngOffset
.Width = 0
.Height = mlblBack.Height - (sngOffset * 2)
.Caption = ""
.BackColor = 8388608
.BackStyle = 1
.Visible = True
End With
' set properties for caption label
With mlblCaption
.Left = mlblBack.Left + 2
.Top = mlblBack.Top + 2
.Width = mlblBack.Width - 4
.Height = mlblBack.Height - 4
.TextAlign = 2 'fmTextAlignCenter
.BackStyle = 0 'fmBackStyleTransparent
.Caption = "0%"
.Visible = Not Me.HideCaption
.ForeColor = 16777215 ' white
End With
'Stop
Exit Sub
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "Initialize", Erl
Resume Next ' Resume at next line.
End Select
End Sub
Private Sub Class_Terminate()
On Error GoTo 0 ' Debug Mode
On Error Resume Next
mlblFront.Visible = False
mlblCaption.Visible = False
On Error GoTo 0 ' Debug Mode
Exit Sub
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "Class_Terminate", Erl
Resume Next ' Resume at next line.
End Select
End Sub
Public Property Get Max() As Double
On Error GoTo 0 ' Debug Mode
Max = mdblMax
Exit Property
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "Max", Erl
Resume Next ' Resume at next line.
End Select
End Property
Public Property Let Max(ByVal dblMax As Double)
On Error GoTo 0 ' Debug Mode
mdblMax = dblMax
Exit Property
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "Max", Erl
Resume Next ' Resume at next line.
End Select
End Property
Public Property Get Value() As Double
On Error GoTo 0 ' Debug Mode
Value = mdblVal
Exit Property
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "Value", Erl
Resume Next ' Resume at next line.
End Select
End Property
Public Property Let Value(ByVal dblVal As Double)
On Error GoTo 0 ' Debug Mode
'update only if change is => 1%
If (CInt(dblVal * (100 / mdblMax))) > (CInt(mdblVal * (100 / mdblMax))) Then
mdblVal = dblVal
Update
Else
mdblVal = dblVal
End If
Exit Property
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "Value", Erl
Resume Next ' Resume at next line.
End Select
End Property
Public Property Get IncrementSize() As Double
On Error GoTo 0 ' Debug Mode
IncrementSize = mdblIncSize
Exit Property
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "IncrementSize", Erl
Resume Next ' Resume at next line.
End Select
End Property
Public Property Let IncrementSize(ByVal dblSize As Double)
On Error GoTo 0 ' Debug Mode
mdblIncSize = dblSize
Exit Property
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "IncrementSize", Erl
Resume Next ' Resume at next line.
End Select
End Property
Public Property Get HideCaption() As Boolean
On Error GoTo 0 ' Debug Mode
HideCaption = mblnHideCap
Exit Property
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "HideCaption", Erl
Resume Next ' Resume at next line.
End Select
End Property
Public Property Let HideCaption(ByVal blnHide As Boolean)
On Error GoTo 0 ' Debug Mode
mblnHideCap = blnHide
Exit Property
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "HideCaption", Erl
Resume Next ' Resume at next line.
End Select
End Property
Private Sub Update()
On Error GoTo 0 ' Debug Mode
Dim intPercent As Integer
Dim dblWidth As Double
'On Error Resume Next
intPercent = mdblVal * (100 / mdblMax)
dblWidth = mdblVal * (mdblFullWidth / mdblMax)
mlblFront.Width = dblWidth
mlblCaption.Caption = intPercent & "%"
'mlblFront.Parent.Repaint ' may not be needed
' Use white or black, depending on progress
If Me.Value > (Me.Max / 2) Then
mlblCaption.ForeColor = 16777215 ' white
Else
mlblCaption.ForeColor = 0 ' black
End If
If mblnNotSmooth Then
If mdteLastUpdate <> Now Then
' update every second.
DoEvents
mdteLastUpdate = Now
End If
Else
DoEvents
End If
Exit Sub
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "Update", Erl
Resume Next ' Resume at next line.
End Select
End Sub
Public Sub Increment()
On Error GoTo 0 ' Debug Mode
Dim dblVal As Double
dblVal = Me.Value
If dblVal < Me.Max Then
Me.Value = dblVal + 1
'Call Update
End If
Exit Sub
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "Increment", Erl
Resume Next ' Resume at next line.
End Select
End Sub
Public Sub Clear()
On Error GoTo 0 ' Debug Mode
Call Class_Terminate
Exit Sub
ErrHandler:
Select Case Err.Number
Case Else
LogErr Err, "clsLblProg", "Clear", Erl
Resume Next ' Resume at next line.
End Select
End Sub
Private Function ParentForm(ctlControl As Control) As String
' returns the name of the parent form
Dim objParent As Object
Set objParent = ctlControl
Do While Not TypeOf objParent Is Form
Set objParent = objParent.Parent
Loop
' Now we should have the parent form
ParentForm = objParent.Name
End Function
Public Property Get Smooth() As Boolean
' Display the progress bar smoothly.
' True by default, this property allows the call
' to doevents after every increment.
' If False, it will only update once per second.
' (This may increase speed for fast progresses.)
'
' negative to set default to true
Smooth = mblnNotSmooth
End Property
Public Property Let Smooth(ByVal IsSmooth As Boolean)
mblnNotSmooth = Not IsSmooth
End Property
Private Sub LogErr(objErr, strMod, strProc, intLine)
' For future use.
End Sub