Using Win32 functions in Visual FoxPro Image Gallery
Kernel Transaction Manager
CommitTransaction
CreateTransaction
RollbackTransaction
Code examples:
Copying files as a transacted operation (Vista)
Copying files as a transacted operation (Vista)

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Before you begin:
Windows Vista offers transaction protection for various file operations: create, delete, copy, move and more.

See also:
  • Displaying standard progress dialog box when copying files
  • Deleting file into the Recycle Bin
  •  
    #DEFINE INVALID_HANDLE_VALUE -1
    #DEFINE COPY_FILE_FAIL_IF_EXISTS 0x00000001
    #DEFINE COPY_FILE_OPEN_SOURCE_FOR_WRITE 0x00000004
     
    DO declare
     
    LOCAL hTrans
    hTrans = CreateTransaction(0, 0, 0, 0, 0, 1000, NULL)
    IF hTrans = INVALID_HANDLE_VALUE
        ? "CreateTransaction call failed:", GetLastError()
        RETURN
    ENDIF
     
    LOCAL cSrc, cDst, nResult
    cSrc = "c:\temp\test.txt"
    cDst = "c:\temp\test1.txt"
     
    nResult = CopyFileTransacted(cSrc, cDst, 0, 0, 0,;
        BITOR(COPY_FILE_FAIL_IF_EXISTS,;
        COPY_FILE_OPEN_SOURCE_FOR_WRITE),;
        hTrans)
     
    IF nResult = 0
        ? "CopyFileTransacted call failed:", GetLastError()
        = RollbackTransaction(m.hTrans)
    ELSE
        = CommitTransaction(m.hTrans)
    ENDIF
     
    = CloseHandle(hTrans)
    * end of main
     
    PROCEDURE declare
        DECLARE INTEGER CopyFileTransacted IN kernel32;
            STRING lpExistingFileName, STRING lpNewFileName,;
            INTEGER lpProgressRoutine, INTEGER lpData,;
            INTEGER pbCancel, INTEGER dwCopyFlags,;
            INTEGER hTransaction
     
        DECLARE INTEGER CloseHandle IN kernel32;
            INTEGER hObject
     
        DECLARE INTEGER CommitTransaction IN KtmW32;
            INTEGER TransactionHandle
     
        DECLARE INTEGER RollbackTransaction IN KtmW32;
            INTEGER TransactionHandle
     
        DECLARE INTEGER GetLastError IN kernel32
     
        DECLARE INTEGER CreateTransaction IN KtmW32;
            INTEGER lpTransactionAttributes, INTEGER UOW,;
            INTEGER CreateOptions, INTEGER IsolationLevel,;
            INTEGER IsolationFlags, INTEGER Timeout,;
            STRING @Description
     

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    1451 bytes  
    Created: 2008-12-04 16:08:39  
    Modified: 2010-07-30 08:32:08  
    Visits in 7 days: 66  
    Listed functions:
    CloseHandle
    CommitTransaction
    CopyFileTransacted
    CreateTransaction
    GetLastError
    RollbackTransaction
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