Microsoft KB Archive/137407

= How to Obtain the Active Drive Letters in a Visual FoxPro App =

Article ID: 137407

Article Last Modified on 2/11/2000

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APPLIES TO


 * Microsoft Visual FoxPro 3.0 Standard Edition

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This article was previously published under Q137407



SUMMARY
Call the GetLogicalDriveStrings API to get all the drive letters used in the active session of Windows NT or Windows 95. This API is not supported in Win32s, so it cannot be used when Visual FoxPro is running under Windows 3.x.



MORE INFORMATION
The following code fragment returns an array called aMyarray containing all the used drive letters for that session of Windows NT or Windows 95. The code uses the GetLogicalDriveStrings Windows API, which is supported under Win32 only, not Win32s. The Number of drives is in a variables called NumberOfDrives. DECLARE INTEGER GetLogicalDriveStrings IN Win32API as getit; INTEGER nBuffSize, STRING lpString CLEAR DIMENSION aMyarray(1) lpString=SPACE(200) nBuffSize=LEN(lpString) =getit(nBuffSize,@lpString) NumberOfDrives=OCCURS(":",lpString) DIMENSION aMyarray(NumberOfDrives) FOR i=1 TO  NumberOfDrives aMyarray(i)=SUBSTR(lpString,AT(":",lpString,i)-1,1) ENDFOR

Additional query words: VFoxWin logical drive list

Keywords: kbcode KB137407

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