dos12.hlp (Table of Contents; Topic list)
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The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
New (1.2) Dos functions
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DosCopy           Copies a file or subdirectory
DosDevIOCtl2      Performs I/O control for devices
DosEditName       Copies a string using editing semantics
DosEnumAttribute  Enumerates a file's extended attributes
DosFileIO         Performs multiple file operations
DosFindFirst2     Finds first matching file
DosFreeResource   Frees a resource
DosFSAttach       Creates or destroys a file-system connection
DosFSCtl          Allows an extended standard interface
DosGetResource2   Retrieves a resource for a module
DosMkDir2         Creates a directory
DosOpen2          Opens or creates a file with extended attributes
DosQFSAttach      Queries attached file-system information
DosQPathInfo      Retrieves information about a file or directory
DosSetPathInfo    Sets information for a file or subdirectory
DosShutdown       Shuts down file systems for power off