DelphiBasics
MkDir
Procedure
Make a directory System unit
 procedure MkDir ( const DirectoryName : string ) ;
Description
The MkDir procedure makes a new directory in the current directory.
 
If the directory already exists, an EInOutError exception is thrown.
 
You can avoid such an exception by preventing IO errors using the {$IOChecks Off} compiler directive. You must then check the IOResult value to see the outcome of your IO operation (rememering that use of IOResult resets the value).
Related commands
$IOChecks When on, an IO operation error throws an exception
ChDir Change the working drive plus path for a specified drive
CreateDir Create a directory
GetCurrentDir Get the current directory (drive plus directory)
GetDir Get the default directory (drive plus path) for a specified drive
IOResult Holds the return code of the last I/O operation
RemoveDir Remove a directory
RmDir Remove a directory
SelectDirectory Display a dialog to allow user selection of a directory
SetCurrentDir Change the current directory
ForceDirectories Create a new path of directories
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Example code : Create a directory and then remove it
var
  error : Integer;

begin
  // Try to create a new subdirectory in the current directory
  // Switch off I/O error checking
  {$IOChecks off}
  MkDir('TempDirectory');

  // Did the directory get created OK?
  error := IOResult;
  if error = 0
  then ShowMessage('Directory created OK')
  else ShowMessageFmt('Directory creation failed with error %d',[error]);

  // Delete the directory to tidy up
  RmDir('TempDirectory');
  {$IOChecks on}
end;
Show full unit code
   Directory created OK
 
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