Solved

# Figuring out Timer Interval for Progress Bar

Posted on 2004-08-23
310 Views
I'm having a really hard time wrapping my brain around this one.

I have a button, a timer, and a progress bar.

Dim L As Label
TotalTime = "0" 'set the variable that tracks the total required time to 0
For i = 1 To 5
Set L = Form1("Liq" & i & "_Amount")
TotalTime = Val(TotalTime) + Val(L) 'for each value, add it to the total time required
Next
pbtimer.Interval = Val(TotalTime) 'PROBLEM LINE - this is where I think the error lies
pbtimer.Enabled = True

Then the timer code is

Private Sub pbtimer_Timer()
If ProgressBar1.Value = 100 Then
Exit Sub
Else
ProgressBar1.Value = ProgressBar1.Value + Val(TotalTime) 'add one percent to the progress bar
End If

So, let's say I need .99 total seconds to complete the task at hand.  How do I set the timer interval to fire off every one hundreth of the required time?  Times 1000 for the timer's interval?  How does the percent (1/100) of what I want to do and the 1/1000 = one second property of the timer both interact?  See my confusion?   (...maybe this is more a math question than a VB question?)

Thanks!
0
Question by:jcreswell

LVL 76

Expert Comment

ID: 11876324
The usual way is to divorce the checking time from the data.
You can set the .Max value to the expected maximum value, and then at each update, possible timer-dependent, set the Value to the current value of whatever is being measured.
0

LVL 18

Expert Comment

ID: 11876456
What is it you're trying to do?
0

LVL 85

Expert Comment

ID: 11877392

Can't quite make sense of the code you posted...

=)
Idle_Mind
0

LVL 1

Author Comment

ID: 11877495
TotalTime is the total amount of time needed to reach 100% on the progress bar.

I cannot figure out how to set the progressbar.max property or the pbtimer.interval properties to cause the progress bar to take 'totaltime' amount of time to reach 100%

I am confused over the interplay between having to specify the "amount" to add to the progress bar per timer cycle in a Percent (out of 100) and the interval of the timer (where 1 second = 1000).

I hope that clears some up, let me know if you need more info!
0

LVL 7

Expert Comment

ID: 11877578
Couldn't you just set the ProgressBar's .Max property to 1000 to avoid confusion? :-)

I am curious, what does this line do?

Set L = Form1("Liq" & i & "_Amount")

-Burbble
0

LVL 1

Author Comment

ID: 11877759
That line enables me to loop through my fields, they are named Liq1, Liq2, Liq3, and so on.  L holds the name of that field so that the value can be pulled and added to "TotalTime."  The fields as a whole add up to the sum of the amount of time the progress bar needs to be going from 0% to 100%.

I tried setting the progressbar max to 1000, it still escapes me how these all work together.  Could you post example code of how this might work, or a description?
0

LVL 85

Expert Comment

ID: 11878194
What are the values in Liq1_Amount thru Liq2_Amount measured in?  Milliseconds?  Seconds?

What is their format? Whole numbers? Fractions?

Idle_Mind
0

LVL 85

Accepted Solution

Mike Tomlinson earned 500 total points
ID: 11878222
The following worked well for values measured in whole seconds.  The progressbar had the default min of 0 and max of 100.

Regards,

Idle_Mind

Option Explicit

Private Sub Command1_Click()
Dim i As Integer
Dim L As Label
Dim TotalTime  As String

TotalTime = "0"
For i = 1 To 5
Set L = Form1("Liq" & i & "_Amount")
TotalTime = Val(TotalTime) + Val(L)
Next

ProgressBar1.Value = 0
pbtimer.Interval = Val(TotalTime) / 100 * 1000 ' divide time into 100 slices and convert to milliseconds
pbtimer.Enabled = True
End Sub

Private Sub pbtimer_Timer()
If ProgressBar1.Value < 100 Then
ProgressBar1.Value = ProgressBar1.Value + 1
End If
If ProgressBar1.Value = 100 Then
pbtimer.Enabled = False
MsgBox "Done!"
End If
End Sub
0

## Featured Post

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

### Suggested Solutions

The debugging module of the VB 6 IDE can be accessed by way of the Debug menu item. That menu item can normally be found in the IDE's main menu line as shown in this picture.   There is also a companion Debug Toolbar that looks like the followin…
If you have ever used Microsoft Word then you know that it has a good spell checker and it may have occurred to you that the ability to check spelling might be a nice piece of functionality to add to certain applications of yours. Well the code that…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…