Windows API Guide: EM_UNDO Message

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Declare Function FileTimeToSystemTime Lib "kernel32.dll" (lpFileTime As FILETIME, lpSystemTime As SYSTEMTIME) As Long

Platforms: Win 32s, Win 95/98, Win NT

FileTimeToSystemTime converts a time and date stored in a FILETIME structure to an identical time and date stored in a SYSTEMTIME structure. The latter structure provides a easier way to access a date and time, whereas the former is used by Windows to identify times and dates associated with files. The data put into the SYSTEMTIME structure identifies the same time and date as the source structure does. The function returns 0 if an error occured, or 1 if successful.

lpFileTime

The date and time, in FILETIME form, to convert.

lpSystemTime

Receives the date and time converted into SYSTEMTIME format.

Example:

' Display the date when file C:\MyProgram\datafile.txt was ' created.  Note how CreateFile's alternate declare must be used under Win 95/98 -- ' see that function's page for more information.  Also note how the times returned by GetFileTime ' need to be converted so the program can figure out what the date actually is. Dim hfile As Long  ' receives the handle to the file Dim ctime As FILETIME  ' receives creation date and time of the file Dim atime As FILETIME  ' receives last access date and time of the file Dim wtime As FILETIME  ' receives last write-to date and time of the file Dim createtime As SYSTEMTIME  ' receives a converted form of ctime Dim retval As Long  ' return value ' Get a handle to the file (note how the alternate declare is used): hfile = CreateFileNS("C:\MyProgram\datafile.txt", GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_ARCHIVE, 0) If hfile = -1 Then  ' if the file could not be opened   Debug.Print "Could not open the file C:\MyProgram\datafile.txt."   End  ' abort the program End If ' Get the various times and dates associated with the file: retval = GetFileTime(hfile, ctime, atime, wtime) ' Convert the creation time from a FILETIME structure to a SYSTEMTIME structure (for usability): retval = FileTimeToSystemTime(ctime, createtime) ' Display the creation date of the file: Debug.Print "Creation Date:"; createtime.wMonth; "-"; createtime.wDay; "-"; createtime.wYear ' Close the file retval = CloseHandle(hfile)

See Also: SystemTimeToFileTime
Category: Time

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