ubookslogin.pas

图书管理系统Delphi源代码

unit ubooksLogin;

{$WARN SYMBOL_PLATFORM OFF}

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  ComServ, ComObj, VCLCom, StdVcl, bdemts, DataBkr, DBClient,
  MtsRdm, Mtx, pBooksLogin_TLB, Provider, DB, ADODB, uPublic;

type
  TxzBooksLogin = class(TMtsDataModule, IxzBooksLogin)
    ADOConnection1: TADOConnection;
    ADODataSet1: TADODataSet;
  private
    { Private declarations }
  protected
    class procedure UpdateRegistry(Register: Boolean; const ClassID, ProgID: string); override;
    procedure Login(const sUserName, sPassWord: WideString; var vActived,
      vCZYID: OleVariant); safecall;
  public
    { Public declarations }
  end;

var
  xzBooksLogin: TxzBooksLogin;

implementation

{$R *.DFM}

class procedure TxzBooksLogin.UpdateRegistry(Register: Boolean; const ClassID, ProgID: string);
begin
  if Register then
  begin
    inherited UpdateRegistry(Register, ClassID, ProgID);
    EnableSocketTransport(ClassID);
    EnableWebTransport(ClassID);
  end else
  begin
    DisableSocketTransport(ClassID);
    DisableWebTransport(ClassID);
    inherited UpdateRegistry(Register, ClassID, ProgID);
  end;
end;

procedure TxzBooksLogin.Login(const sUserName, sPassWord: WideString;
  var vActived, vCZYID: OleVariant);
begin
  try
    if ADOConnection1.Connected then
      ADOConnection1.Connected := False;
    ADOConnection1.ConnectionString:=GetConStr;
    ADODataSet1.Parameters.ParamByName('aName').Value :=sUserName;
    ADODataSet1.Open;
    if ADODataSet1.IsEmpty then
      vActived:='用户名非法！'
    else
      if ADODataSet1.FieldByName('PW').AsString = Trim(sPassWord) then
      begin
        vActived:='True';
        vCZYID:=ADODataSet1.FieldByName('ID').AsString;
      end
      else
        vActived:='口令输入错误，请检查！';
  except
    vActived:=ADOConnection1.Errors[0].Description;
  end;
end;

initialization
  TComponentFactory.Create(ComServer, TxzBooksLogin,
    Class_xzBooksLogin, ciMultiInstance, tmApartment);
end.