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Get Amount Of Free And Used Memory

'Add a module to your project (In the menu choose Project -> Add Module, Then click Open)
'Insert this code to the module :

Public Type MEMORYSTATUS
dwLength As Long
dwMemoryLoad As Long
dwTotalPhys As Long
dwAvailPhys As Long
dwTotalPageFile As Long
dwAvailPageFile As Long
dwTotalVirtual As Long
dwAvailVirtual As Long
End Type
Public Declare Sub GlobalMemoryStatus Lib "kernel32" (lpBuffer As MEMORYSTATUS)

'Insert this code to your form:

Private Sub Form_Load()
Dim MS As MEMORYSTATUS
MS.dwLength = Len(MS)
GlobalMemoryStatus MS
' MS.dwMemoryLoad contains percentage memory used
' MS.dwTotalPhys contains total amount of physical memory in bytes
' MS.dwAvailPhys contains available physical memory
' MS.dwTotalPageFile contains total amount of memory in the page file
' MS.dwAvailPageFile contains available amount of memory in the page file
' MS.dwTotalVirtual contains total amount of virtual memory
' MS.dwAvailVirtual contains available virtual memory

MsgBox MS.dwAvailPhys & " available physical memory"
End Sub

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