System Delphi

Title: How to let build Windows an ADO connection string
uses OleDB, ComObj, ActiveX;
function ADOConnectionString(ParentHandle: THandle; InitialString: WideString;
out NewString: string): Boolean;
var
DataInit: IDataInitialize;
DBPrompt: IDBPromptInitialize;
DataSource: IUnknown;
InitStr: PWideChar;
begin
Result := False;
DataInit := CreateComObject(CLSID_DataLinks) as IDataInitialize;
if InitialString '' then
DataInit.GetDataSource(nil, CLSCTX_INPROC_SERVER, PWideChar(InitialString),
IUnknown, DataSource);
DBPrompt := CreateComObject(CLSID_DataLinks) as IDBPromptInitialize;
if Succeeded(DBPrompt.PromptDataSource(nil, ParentHandle,
DBPROMPTOPTIONS_PROPERTYSHEET, 0, nil, nil, IUnknown, DataSource)) then
begin
InitStr := nil;
DataInit.GetInitializationString(DataSource, True, InitStr);
NewString := InitStr;
Result := True;
end;
end;