RAD Studio VCL Reference
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TDirectoryListBox.Directory Property

Determines the current directory for the directory list box control.

Pascal
property Directory: string;
C++
__property AnsiString Directory;

The directory list box displays the value of the Directory property as the current directory in the list box. The example shows how a directory list box and a file list box can work together through their Directory properties. 

If the form contains a file list box, you can set the FileList property to have the file list box automatically display the files from the directory specified by the Directory property.  

C++ Examples: 

 

/*
The following example assumes that a drive combo box, a file
list box, and a directory list box are on a form. Add this
code as the OnChange event handler for the drive combo box
and the OnChange event handler for the directory list box.
When the user changes the drive using the combo box, the
directory list box and file list box will update to reflect
the new drive and the current directory on that drive.  When
the user double clicks on a directory in the file list box
will update to reflect the new directory.
*/
void __fastcall TForm1::DriveComboBox1Change(TObject *Sender)
{
  DirectoryListBox1->Drive = DriveComboBox1->Drive;
  FileListBox1->Drive = DriveComboBox1->Drive;
  FileListBox1->Directory = DirectoryListBox1->Directory;
}

void __fastcall TForm1::DirectoryListBox1Change(TObject *Sender)
{
  FileListBox1->Directory = DirectoryListBox1->Directory;
}

 

Delphi Examples: 

{
The following example assumes that a drive combo box, a file
list box, and a directory list box are on a form. Add this
code as the OnChange event handler for the drive combo box
and the OnChange event handler for the directory list box.
When the user changes the drive using the combo box, the
directory list box and file list box will update to reflect
the new drive and the current directory on that drive.  When
the user double clicks on a directory in the file list box
will update to reflect the new directory.
}
procedure TForm1.DirectoryListBox1Change(Sender: TObject);
begin
  FileListBox1.Directory := DirectoryListBox1.Directory;
end;

procedure TForm1.DriveComboBox1Change(Sender: TObject);
begin
  DirectoryListBox1.Drive := DriveComboBox1.Drive;
  FileListBox1.Drive := DriveComboBox1.Drive;
  FileListBox1.Directory := DirectoryListBox1.Directory;
end;

 

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