ChDir (Delphi)

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Description

This example shows how to change and display the current directory through text. This example requires 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 you change 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 you double-click a directory in the file list box, it will update to reflect the new directory.

Code

procedure TForm1.Button1Click(Sender: TObject);
begin
  System.ChDir(Edit1.Text);
  if IOResult <> 0 then
    MessageDlg('Cannot find directory', mtWarning, [mbOk], 0);
  Edit2.Text := GetCurrentDir;
  FileListBox1.Directory := GetCurrentDir;
  DirectoryListBox1.Directory := GetCurrentDir;
end;

procedure TForm1.DirectoryListBox1Change(Sender: TObject);
begin
  FileListBox1.Directory := DirectoryListBox1.Directory;
  Edit2.Text := GetCurrentDir;
end;

procedure TForm1.DriveComboBox1Change(Sender: TObject);
begin
  DirectoryListBox1.Drive := DriveComboBox1.Drive;
  FileListBox1.Drive := DriveComboBox1.Drive;
  FileListBox1.Directory := DirectoryListBox1.Directory;
  Edit2.Text := GetCurrentDir;
end;

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