pws.dpr

DLL做登录窗体演示Delphi源码,dll开发和调用

LIBRARY pws;

{ Important note about DLL memory management: ShareMem must be the
  first unit in your library's USES clause AND your project's (select
  Project-View Source) USES clause if your DLL exports any procedures or
  functions that pass strings as parameters or function results. This
  applies to all strings passed to and from your DLL--even those that
  are nested in records and classes. ShareMem is the interface unit to
  the BORLNDMM.DLL shared memory manager, which must be deployed along
  with your DLL. To avoid using BORLNDMM.DLL, pass string information
  using PChar or ShortString parameters. }

USES
  SysUtils,
  Classes, Controls,
  frm_pws IN 'frm_pws.pas' {frmpws};
VAR
  myCnn             :STRING;
  {$R *.res}

FUNCTION checkpwd:boolean; STDCALL;
VAR
  frmpws            :tfrmpws;
BEGIN
  IF mycnn = '' THEN
    BEGIN
      result := false;
      exit;
    END
  ELSE
    BEGIN
      frmpws := tfrmpws.Create(NIL);
      TRY
        frmpws.ADOQuery1.ConnectionString := mycnn;
        result := frmpws.ShowModal = mrok;
      FINALLY
        frmpws.free;
      END;
    END;
END;

PROCEDURE setCNN(cnn:STRING); STDCALL;
BEGIN
  myCnn := cnn;
END;

EXPORTS
  setCNN, checkpwd;
BEGIN

END.