Excel VBA - scroll by Tick Count

hindersaliva
hindersaliva used Ask the Experts™
on
I'm working on an 'animation' idea.
I have this data in an array. (loaded from a sheet)
Scroll by tickWhen run, and when the Tick Count is reached I want to ScrollColumn to the column shown.

Thanks for any ideas.


FYI: it will start when a button is clicked.
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Mike in ITIT System Administrator
Distinguished Expert 2017

Commented:
Can you show the code that you currently have to get to the TickCount?

Once you reach it you could do something like:
ActiveWindow.SmallScroll ToRight:=1

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That will scroll 1 column to the right. So if you have columns  A - O showing it will scroll right and show B - P.
Without knowing what the rest of your code is there isn't much else I can help with.

Author

Commented:
Mike, I have figured out the scrolling as, eg.
    ActiveWindow.ScrollColumn = 5

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My problem is, how can I get VBA procedure to 'listen' to the Tick Count and execute the above when each tick count is reached (the time as per the array or grid - see the image in my question) .

So, when Tick is 0354 this should execute
ActiveWindow.ScrollColumn = 2
So it will be something like a 'slide show'.

FYI: the code for the ticks is
Public Declare Function GetTickCount Lib "Kernel32" () As Long

    lngTime = GetTickCount()

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Martin LissOlder than dirt
Most Valuable Expert 2017
Distinguished Expert 2018

Commented:
This works but I had to make the tick values much larger to be able to see the scrolling. You'd be better off using the clock time.

Note that the "array" is built into the code.

Option Explicit

Private Declare Function GetTickCount Lib "kernel32" () As Long
Sub ScrollByTick()
    Dim lngTicks As Long
    Dim lngIndex As Long
    Dim varrTicks As Variant
    Dim varrCols As Variant
    
    varrTicks = Array(1, 3540000, 5000000, 10000000)
    varrCols = Array(1, 2, 3, 4)
    
    Do Until lngTicks > varrTicks(UBound(varrTicks))
        lngTicks = lngTicks + 1
        For lngIndex = 0 To UBound(varrTicks)
            If lngTicks = varrTicks(lngIndex) Then
                ActiveWindow.ScrollColumn = varrCols(lngIndex)
                Exit For
            End If
        Next
    Loop

End Sub

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Author

Commented:
Martin, it works. Thanks.  I see that you're not using the GetTickCount API function. Let me explain why I was going in that direction.

My 'slide show' should advance to the next column (per array) when a precise time is reached. The 'time' is as per every 4 bars in a piece of music being played simultaneously - I would have got these times (in real-time or the wave) and put them into the array. The aim is, I intend to capture the 'slide show' and the audio by screen recording.

So, I'm thinking
lngTicks = lngTicks + 1 

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would go at a speed that cannot be controlled.

I'm hoping GetTickCount would have a precise time. Am I right in thinking that?
Martin LissOlder than dirt
Most Valuable Expert 2017
Distinguished Expert 2018

Commented:
I see that you're not using the GetTickCount API function
You're right! I meant to. Be back in a bit.
Martin LissOlder than dirt
Most Valuable Expert 2017
Distinguished Expert 2018

Commented:
The problem is that when actually using GetTickCount I think that the ticks will go faster than the code so it will be hard to react to it when it is exactly one of the values in the array.
Martin LissOlder than dirt
Most Valuable Expert 2017
Distinguished Expert 2018

Commented:
See my How to time code article.
Older than dirt
Most Valuable Expert 2017
Distinguished Expert 2018
Commented:
I think I have it.

Option Explicit

Private Declare Function GetTickCount Lib "kernel32" () As Long
Sub ScrollByTick()
    Dim lngNow As Long
    Dim lngIndex As Long
    Dim lngStart As Long
    Dim varrTicks As Variant
    Dim varrCols As Variant
    
    varrTicks = Array(1, 354, 500, 1000)
    varrCols = Array(1, 2, 3, 4)
    
    lngStart = GetTickCount()
    
    Do
        lngNow = GetTickCount()
        ' Check to see if we should stop the loop
        If (lngNow - lngStart > varrTicks(UBound(varrTicks))) Then
            ' Scroll to the last column in the array and then get out
            ActiveWindow.ScrollColumn = varrCols(UBound(varrCols))
            Exit Do
        End If
        For lngIndex = 0 To UBound(varrTicks) - 1
            If (lngNow - lngStart >= varrTicks(lngIndex)) And _
               (lngNow - lngStart < varrTicks(lngIndex + 1)) Then
                ActiveWindow.ScrollColumn = varrCols(lngIndex)
                Exit For
            End If
        Next
    Loop

End Sub

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