juan.~pas

来自「VB编写的考试系统和论文」· ~PAS 代码 · 共 84 行

unit juan;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Grids, DBGrids, DB, ADODB, Buttons, StdCtrls;

type
  TForm10 = class(TForm)
    GroupBox1: TGroupBox;
    sb: TSpeedButton;
    qx: TSpeedButton;
    DataSource1: TDataSource;
    q10: TADOQuery;
    DBGrid1: TDBGrid;
    qc: TADOQuery;
    SpeedButton1: TSpeedButton;
    procedure qxClick(Sender: TObject);
    procedure sbClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure SpeedButton1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form10: TForm10;

implementation
uses denglu;
{$R *.dfm}

procedure TForm10.qxClick(Sender: TObject);
begin
close();
end;

procedure TForm10.sbClick(Sender: TObject);
begin
  q10.Close;
  q10.SQL.Clear;
  q10.SQL.Add('select * from temp');
  q10.Open;
   if q10.Eof then
    begin
      MessageBox(handle, '试卷还未生成!', '提示',  mb_IconInformation + mb_Ok);
     sb.Visible:=false;
     exit;
    end
   else
        begin
        q10.Delete;
        q10.Next;
        end;
        q10.Delete;
        q10.Close;
        MessageBox(handle, '题目清除成功!', '提示',  mb_IconInformation + mb_Ok);
        exit;
end;

procedure TForm10.FormCreate(Sender: TObject);
begin
  qc.Close;
  qc.SQL.Clear;
  qc.SQL.Add('select * from temp');
  qc.Open;
  if qc.Eof then
    begin
     sb.Visible:=false;
    end
   else
     sb.Visible:=true;
end;

procedure TForm10.SpeedButton1Click(Sender: TObject);
begin
close;
end;

end.