Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Creating an Open dialog box to specify the drive, directory, and name of a file to open (Shell32 version)
Displaying all TCP connections for the local system
Enumerating ODBC drivers available on the local computer
Enumerating the subkeys for a given registry key
Obtaining MAC address through Address Resolution Protocol (ARP) request
Reading and setting the priority class values for the current process and thread
Using GetBinaryType (WinNT only) to determine the type of an executable file
Using the RestartDialog function -- restarting Windows
GDI+: Using Scale and Shear transformations
How to save registry key including its subkeys and values to a file
How to view system icons for the classes installed on the local machine
Obtaining addresses for the adapters on the local computer (Win XP/2003/Vista)
Retrieving information about the main VFP window
Setting the mouse capture to the specified window
Winsock: how to retrieve the protocol information corresponding to a protocol number
Winsock: retrieving information about available transport protocols
Accessing the list of Windows Recent Documents
Drawing a rectangle using Windows regular edges and borders
Enumerating MIDI output devices
How to generate GUID values
How to retrieve the size of a remote file (FTP)
Obtaining heap handles and enumerating memory blocks for the current VFP session (WinNT only)
Playing WAV sounds simultaneously
Retrieving a universal form for the drive-based path for a network resource
Basic Volume information

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See also:
  • Displaying the drive type value
  • Setting the volume label
  • Disk in drive A:
  • Obtaining physical parameters for a drive: sectors, clusters, cylinders...
  • #DEFINE FILE_CASE_SENSITIVE_SEARCH 1
    #DEFINE FILE_CASE_PRESERVED_NAMES 2
    #DEFINE FILE_UNICODE_ON_DISK 4
    #DEFINE FILE_PERSISTENT_ACLS 8
    #DEFINE FILE_FILE_COMPRESSION 16
    #DEFINE FILE_VOLUME_IS_COMPRESSED 0x8000
    #DEFINE MAX_PATH 260
    #DEFINE CRLF CHR(13)+CHR(10)
    
        DO declare
        DO GetVolumeInfo WITH "C:\"
    * end of main
    
    PROCEDURE GetVolumeInfo(cRoot As String)
        LOCAL cVolNameBuffer, nVolSerialNo, nMaxCompLen, nFlags, nError
    
        STORE REPLICATE(CHR(0),MAX_PATH) TO;
            cVolNameBuffer, nFilesysNameBuffer
    
        STORE 0 TO nVolSerialNo, nMaxCompLen, nFlags
    
        nResult = GetVolumeInformation(cRoot, @cVolNameBuffer,;
            MAX_PATH, @nVolSerialNo, @nMaxCompLen, @nFlags,;
            @nFilesysNameBuffer, MAX_PATH)
    
        IF nResult = 0
        * 3=ERROR_PATH_NOT_FOUND
        * 21=ERROR_NOT_READY
        * 87=ERROR_INVALID_PARAMETER
            nError = GetLastError()
            = MESSAGEBOX("GetVolumeInformation() call failed: " +;
                TRANSFORM(m.nError), 48, m.cRoot)
            RETURN
        ENDIF
    
        DO LogInfo WITH "Root", m.cRoot
    
        DO LogInfo WITH "File System Name",;
            LEFT(nFilesysNameBuffer, AT(CHR(0),nFilesysNameBuffer)-1)
    
        DO LogInfo WITH "Volume Name",;
            LEFT(cVolNameBuffer, AT(CHR(0),cVolNameBuffer)-1)
    
        DO LogInfo WITH "Volume Serial No.",;
            TRANSFORM(nVolSerialNo, "@0")
    
        DO LogInfo WITH "Max Filename Length", nMaxCompLen
    
        DO LogInfo WITH "File System Flags", TRANSFORM(nFlags, "@0")
    
        DO LogInfo WITH "Case-sensitive file names support",;
            IIF(BITAND(nFlags, FILE_CASE_SENSITIVE_SEARCH)=0, "No", "Yes")
    
        DO LogInfo WITH "The file system preserves the case of file names",;
            IIF(BITAND(nFlags, FILE_CASE_PRESERVED_NAMES)=0, "No", "Yes")
    
        DO LogInfo WITH "Unicode in file names support",;
            IIF(BITAND(nFlags, FILE_UNICODE_ON_DISK)=0, "No", "Yes")
    
        DO LogInfo WITH "ACLs support",;
            IIF(BITAND(nFlags, FILE_PERSISTENT_ACLS)=0, "No", "Yes")
    
        DO LogInfo WITH "File-based compression support",;
            IIF(BITAND(nFlags, FILE_FILE_COMPRESSION)=0, "No", "Yes")
    
        DO LogInfo WITH "The specified volume is a compressed volume",;
            IIF(BITAND(nFlags, FILE_VOLUME_IS_COMPRESSED)=0, "No", "Yes")
    
        IF USED("csResult")
            SELECT csResult
            GO TOP
            BROWSE NORMAL NOWAIT
        ENDIF
    
    PROCEDURE LogInfo(cName, vValue)
        IF NOT USED("csResult")
            CREATE CURSOR csResult (property_name C(50), property_value C(50))
        ENDIF
    
        INSERT INTO csResult (property_name, property_value);
        VALUES (m.cName, TRANSFORM(m.vValue))
    
    PROCEDURE declare
        DECLARE INTEGER GetLastError IN kernel32
    
        DECLARE SHORT GetVolumeInformation IN kernel32;
            STRING lpRootPathName, STRING @lpVolumeNameBuffer,;
            LONG nVolumeNameSize, LONG @lpVolumeSerialNumber,;
            LONG @lpMaximumComponentLength, LONG @lpFlags,;
            STRING @lpFileSystemNameBuffer, LONG nFilesysNameSize
    
    

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    2754 bytes  
    Created: 2001-08-10 12:00:00  
    Modified: 2009-02-16 14:55:10  
    Visits in 7 days: 66  
    Listed functions:
    GetLastError
    GetVolumeInformation
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