Как получить параметры Alias?

The following function uses the GetAliasParams method of TSession to get the directory mapping for an alias:

uses DbiProcs, DBiTypes;
 
function GetDataBaseDir(const Alias: string): string;
{* Will return the directory of the database given the alias
  (without trailing backslash) *}
var
  sp: PChar;
  Res: pDBDesc;
begin
  try
    New(Res);
    sp := StrAlloc(length(Alias) + 1);
    StrPCopy(sp, Alias);
    if DbiGetDatabaseDesc(sp, Res) = 0 then
      Result := StrPas(Res^.szPhyName)
    else
      Result := '';
  finally
    StrDispose(sp);
    Dispose(Res);
  end;
end;

Взято с Delphi Knowledge Base: https://www.baltsoft.com/

{
  Here's a demo to demonstrate how to get info about aliases in Delphi.
  First, create a new project with a listbox and 3 labels (called ListBox1,
  Label1, Label2, and Label3).  Then add an OnCreate event handler for the form
  with this code in it:
}
 
 
procedure TForm1.FormCreate(Sender: TObject);
begin
  {
    GetAliasNames Populates a string list with the names of persistent
    Borland Database Engine (BDE) aliases.
  }
  Session.GetAliasNames(ListBox1.Items);
end;
 
{ Now add an OnClick event for the Listbox: }
 
procedure TForm1.ListBox1Click(Sender: TObject);
var
  tStr: array[0..100] of char;
  Desc: DBDesc;
{
 The DBDesc structure describes a database, using the following fields:
 
 szName    DBINAME  Specifies the database alias name.
 szText    DBINAME  Descriptive text.
 szPhyName  DBIPATH  Specifies the physical name/path.
 szDbType   DBINAME  Specifies the database type.
}
begin
  if ListBox1.Items.Count = 0 then
    exit;
  StrPLCopy(tStr, ListBox1.Items.Strings[ListBox1.ItemIndex], High(tStr));
  DbiGetDatabaseDesc(tStr, @Desc);
  with Desc do
  begin
    Label1.Caption := StrPas(Desc.szName);
    Label2.Caption := StrPas(Desc.szPhyName);
    Label3.Caption := StrPas(Desc.szDbType);
    Label4.Caption := StrPas(Desc.szText);
  end;
end;
 
// Now add the following to the 'uses' clause at the top of the unit:
 
uses
  {...,}DB, DBTables, DBITypes, DBIProcs;
 
 
{********************************************************************}
 
{
  This Examples is just another approach to get infos about aliases
  Using 2 component (TListBox) and only use 1 uses clause (dbTables)
}
 
uses
  {...}, DBTables;
 
type
  TForm1 = class(TForm)
    ListBox1: TListBox;
    ListBox2: TListBox;
 
{..}
 
implementation
 
{..}
 
procedure TForm1.FormCreate(Sender: TObject);
begin
  {Get Alias Names}
  Session.GetAliasNames(ListBox1.Items);
end;
 
procedure TForm1.ListBox1Click(Sender: TObject);
begin
  ListBox2.Items.Clear;
  if ListBox1.Items.Count = 0 then
    Exit;
  {Get Alias Driver Names, like Standard, MsAccess, etc}
  ListBox2.Items.Add('DRIVER=' + Session.GetAliasDriverName(ListBox1.Items.Strings
      [ListBox1.ItemIndex]));
  {Get Alias Parameters and add it parameters into listbox2}
  Session.GetAliasParams(ListBox1.Items.Strings[ListBox1.ItemIndex], ListBox2.Items);
end;
 
end.

Взято с сайта https://www.swissdelphicenter.ch/en/tipsindex.php