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Microsoft Access VBA and VB6 Module Library

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Class: MemoryStatus in Category Windows : System Information from Total Visual SourceBook

Retrieve memory status information such as total and available memory, with support for 32 and 64-bit API calls using VBA and VB6.

Procedure List

Procedure Name	Type	Description
(Declarations)	Declarations	Declarations and private variables for the CMemoryStatus class.
MemoryScale	Property	Get the currently specified scale to adjust memory units.
MemoryUnits	Property	Get the string representing the current memory units.
Class_Initialize	Initialize	Initialize the object to get the memory values.
AdjustScale	Private	Adjust a value in bytes to the specified scale.
LargeIntToCurrency	Private	Convert 8 bytes from the large integer to a currency value.
AvailablePageFile	Method	Get the available page file size.
AvailablePhysical	Method	Get the available physical memory.
AvailableVirtual	Method	Get the available virtual memory.
MemoryLoad	Method	Get the memory utilization (value between 0 and 100).
TotalPageFile	Method	Get the page file size.
TotalPhysical	Method	Get the total physical memory.
TotalVirtual	Method	Get the total virtual memory.

Example Code for Using Class: MemoryStatus

' Example of CMemoryStatus
'
' To use this example, create a new module and paste this code into it.
' Then run the procedure by putting the cursor in the procedure and pressing:
'    F5 to run it, or
'    F8 to step through it line-by-line (see the Debug menu for more options)

Private Sub Example_CMemoryStatus()
  ' Comments: Example of using the CMemoryStatus class to get memory information, in VB6 and VBA with 32 and 64 bit Windows API calls.
  '           Run this procedure and see the information in the Immediate Window.

  Dim clsMemoryStatus As CMemoryStatus
  Dim intLoop As Integer
  Dim strUnits As String

  Set clsMemoryStatus = New CMemoryStatus

  With clsMemoryStatus
    ' Show memory status information
    Debug.Print "Memory Load = " & .MemoryLoad & "%"

    ' Loop three times to see how units can be adjusted
    For intLoop = 1 To 4
      ' Show memory amounts in bytes, KB, MB or GB
      Select Case intLoop
        Case 1
          .MemoryScale = eMemoryBytes
        Case 2
          .MemoryScale = eMemoryKB
        Case 3
          .MemoryScale = eMemoryMB
        Case 4
          .MemoryScale = eMemoryGB
      End Select
      strUnits = .MemoryUnits()

      Debug.Print
      Debug.Print "Total Physical      = " & .TotalPhysical & strUnits
      Debug.Print "Available Physical  = " & .AvailablePhysical & strUnits

      Debug.Print "Total Page File     = " & .TotalPageFile & strUnits
      Debug.Print "Available Page File = " & .AvailablePageFile & strUnits

      Debug.Print "Total Virtual       = " & .TotalVirtual & strUnits
      Debug.Print "Available Virtual   = " & .AvailableVirtual & strUnits
    Next intLoop
  End With

  Set clsMemoryStatus = Nothing
End Sub

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