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Stored procedures
HCheckUnaltered (Function)
In french: HVérifieInaltéré
HFSQLHFSQL Client/ServerAvailable only with these kinds of connection
Checks whether one or all records found in an unalterable data file have not been modified (with an hexadecimal editor for example).
Caution:
  • This function is available from version 23. For Client/Server files, the HFSQL Client/Server engine must be in version 23 (or later).
  • An altered record can be read if the record header is not altered.
Example
// Check all records found in MyCustomerFile
IF HCheckUnaltered(MyCustomerFile) = True THEN
Trace("No record was modified")
ELSE
Trace("The file was altered")
END
Syntax
<Result> = HCheckUnaltered(<Data file> [, <Record>])
<Result>: Boolean
  • True if the record was not altered,
  • False otherwise. In this case, ErrorInfo returns the list of altered records.
<Data file>: Character string (with or without quotes)
Name of HFSQL data file to check.
<Record>: Optional integer or Integer constant
  • Number of the record to check.
  • Constant used to specify the record to check:
    hCurrentRecNumCheck the current record.
    hRecNumAll
    (Default value)    		Check all records.
Component : wd250hf.dll
See also
Minimum version required
  • Version 23
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