Looking for a reliable way to determine if a drive letter is in use

[TerryRitchie]

Looks like you'd use GetLogicalDrives()

So,

Code: (Select All)

Declare CustomType Library
Function GetLogicalDrives~&()
End Declare

Dim As Unsigned Long currentLetters: currentLetters = GetLogicalDrives
'do something to figure out the bitmask using AND

It looks like GetDriveTypeA may be more appropriate:

https://learn.microsoft.com/en-us/window...drivetypea

It can report that a drive exists but no volume has been mounted.