Using Win32 functions in Visual FoxPro Image Gallery
Memory Management
..msdn
CopyMemory
FillMemory
GetProcessHeap
GetProcessHeaps
GlobalAlloc
GlobalFree
GlobalLock
GlobalMemoryStatus
GlobalReAlloc
GlobalSize
GlobalUnlock
HeapAlloc
HeapCompact
HeapFree
HeapLock
HeapReAlloc
HeapSize
HeapUnlock
HeapValidate
HeapWalk
LocalAlloc
LocalFree
LocalSize
VirtualAllocEx
VirtualFreeEx
ZeroMemory
Code examples:
Accessing LSA Policy object (Local Security Authority)
Adding and deleting Scheduled Tasks using NetScheduleJob API functions
Adding and deleting User Accounts
Adding printer to the list of supported printers for the specified server
Adding user-defined items to the Control Menu of VFP form (requires VFP9)
Attaching menu to a top-level form
Browsing Windows Known Folders (Special Folders)
Compressing and decompressing files with Windows API Runtime Library routines
Converting command-line string to a set of Unicode argument strings (WinNT only)
Creating the Open dialog box to specify the drive, directory, and name of a file to open
Creating the Save dialog box to specify the drive, directory, and name of a file to save
Custom HttpRequest class (WinHTTP)
Deleting files into the Recycle Bin
Displaying dimmed window behind VFP top-level form
Displaying standard progress dialog box when copying files
Displaying system dialog that selects a folder
Dynamic strings implemented through VFP Custom class
Enumerating data formats currently available on the clipboard
Enumerating files opened on the network
Extensible Storage Engine class library
How to assemble an array of strings and pass it to external function
How to display a user-defined icon in the MessageBox dialog
How to display advanced Task Dialog (Vista)
How to display the Print property sheet
How to display the Properties dialog box for a file (ShellExecuteEx)
How to enumerate sessions and processes on a specified terminal server
How to enumerate terminal servers within the specified Windows domain
How to enumerate, add and delete shares on the local computer (WinNT/XP)
How to extract frames from AVI files
How to ping a remote site using ICMP API calls
How to prevent users from accessing the Windows Desktop and from switching to other applications
How to remove a directory that is not empty
How to write and read Window Properties for the specified window
Loading a string resource from an executable file
MapiSendMail class for Visual FoxPro application
Mapping and disconnecting network drives
Obtaining names of local and global groups for current user (WinNT/XP/2K)
Passing data records between VFP applications via the Clipboard
Printing Image File, programmatically set print page orientation to landscape
Reading and setting explicit Application User Model ID for the current process (Win7)
Reading entries from Event logs
Retrieving configuration information for the specified server (Win2000/XP)
Retrieving the command line for the VFP session
Sending email messages with Simple MAPI
Shortcut Menu Class
Starting a dialog box for connecting to network resources and passing input parameters
Storing the environment strings in cursor
URL: splitting into its component parts
Using Change Notification Objects to monitor changes to the printer or print server
Using WM_COPYDATA for interprocess communication (VFP9)
Windows Shell Icons displayed and exported to ICO files (Vista)
Winsock: connecting to a news server (NNTP, port 119)
Writing entries to custom Event Log
Retrieving configuration information for the specified server (Win2000/XP)

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Before you begin:
Check similar example Retrieving configuration information for the specified workstation (Win2000/XP).
 
DO decl
 
PRIVATE hBuffer, cServer
hBuffer = 0
 
* use Null as server name for local computer
*cServer = Null
 
* Windows NT: server name must begin with \\
* check with and without Unicode conversion
*cServer = STRCONV("\\MYSERVER"+CHR(0), 5)
 
* Windows XP
cServer = STRCONV("MYSERVER"+CHR(0), 5)
 
nResult = NetServerGetInfo(cServer, 101, @hBuffer)
IF nResult <> 0
*   53 = ERROR_BAD_NETPATH
*  123 = ERROR_INVALID_NAME
* 1113 = ERROR_NO_UNICODE_TRANSLATION
    ? "Error code:", nResult
ELSE
    DO ParseSrvInfo
    = NetApiBufferFree(hBuffer)
ENDIF
* end of main
 
PROCEDURE ParseSrvInfo
*|typedef struct _SERVER_INFO_101 {
*|  DWORD sv101_platform_id;
*|  LPWSTR sv101_name;
*|  DWORD sv101_version_major;
*|  DWORD sv101_version_minor;
*|  DWORD sv101_type;
*|  LPWSTR sv101_comment;
*|} SERVER_INFO_101, *PSERVER_INFO_101, *LPSERVER_INFO_101;
 
    LOCAL nBufsize, cBuffer
 
    * copying memory buffer to FoxPro string
    nBufsize = 0
    = NetApiBufferSize(hBuffer, @nBufsize)
    cBuffer = Repli(Chr(0), nBufsize)
    = CopyMemory(@cBuffer, hBuffer, nBufsize)
 
    LOCAL nPlatformId, nVerMajor, nVerMinor, nSoftType,;
        nNamePtr, nCommentPtr, cName, cComment
 
    nPlatformId = buf2dword(SUBSTR(cBuffer, 1,4))
    nNamePtr = buf2dword(SUBSTR(cBuffer, 5,4))
    nVerMajor = buf2dword(SUBSTR(cBuffer, 9,4))
    nVerMinor = buf2dword(SUBSTR(cBuffer, 13,4))
    nSoftType = buf2dword(SUBSTR(cBuffer, 17,4))
    nCommentPtr = buf2dword(SUBSTR(cBuffer, 21,4))
 
    cName = GetStr(cBuffer, nNamePtr-hBuffer+1, nBufsize)
    cComment = GetStr(cBuffer, nCommentPtr-hBuffer+1, nBufsize)
 
    ? "Platform ID:", nPlatformId
    ? "Major version:", nVerMajor
    ? "Minor version:", nVerMinor
    ? "Software type:", nSoftType
    ? "Server name:", cName
    ? "Description:", cComment
 
FUNCTION GetStr(cBuffer, nOffs, nMaxOffs)
    LOCAL cResult, ch
    cResult = ""
    DO WHILE nOffs < nMaxOffs
        ch = SUBSTR(cBuffer, nOffs, 2)
        IF ch = Chr(0)+Chr(0)
            EXIT
        ENDIF
        cResult = cResult + LEFT(ch,1)
        nOffs = nOffs + 2
    ENDDO
RETURN cResult
 
PROCEDURE decl
    DECLARE INTEGER NetServerGetInfo IN netapi32;
        STRING servername, INTEGER lvl, INTEGER @bufptr
 
    DECLARE INTEGER NetApiBufferFree IN netapi32 INTEGER Buffer
    DECLARE INTEGER GlobalSize IN kernel32 INTEGER hMem
 
    DECLARE INTEGER NetApiBufferSize IN netapi32;
        INTEGER Buffer, INTEGER @ByteCount
 
    DECLARE RtlMoveMemory IN kernel32 As CopyMemory; 
        STRING @Destination, INTEGER Source, INTEGER nLength 
 
FUNCTION buf2dword(lcBuffer)
RETURN Asc(SUBSTR(lcBuffer, 1,1)) + ;
    BitLShift(Asc(SUBSTR(lcBuffer, 2,1)),  8) +;
    BitLShift(Asc(SUBSTR(lcBuffer, 3,1)), 16) +;
    BitLShift(Asc(SUBSTR(lcBuffer, 4,1)), 24)
 
 
 

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2679 bytes  
Created: 2003-10-28 09:46:59  
Modified: 2004-06-01 19:09:29  
Visits in 7 days: 130  
Listed functions:
GlobalSize
NetApiBufferFree
NetApiBufferSize
NetServerGetInfo
Printer friendly API declarations
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