ffan.~pas

一个很好的例子

unit ffan;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, CheckLst, ToolWin, ComCtrls, ExtCtrls, Buttons;

type
  Tf_fan = class(TForm)
    Panel1: TPanel;
    ToolBar1: TToolBar;
    CheckListBox1: TCheckListBox;
    SpeedButton1: TSpeedButton;
    procedure FormShow(Sender: TObject);
    procedure SpeedButton1Click(Sender: TObject);
    procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  f_fan: Tf_fan;

implementation
  uses fdata;
{$R *.dfm}

procedure Tf_fan.FormShow(Sender: TObject);
var
  fdindex:integer;
begin
  datamodule3.treese.DataSet.First;
  while (datamodule3.treeqy.Eof=False) do //动态加入checklistbox数据项
  begin
    checklistbox1.Items.Add(datamodule3.treese.DataSet.Fields[0].AsString);
    fdindex:=strtoint(trim(datamodule3.treese.DataSet.Fields[1].AsString));
    if (trim(datamodule3.treese.DataSet.Fields[2].AsString)='1') then
      checklistbox1.Checked[fdindex]:=True;
    datamodule3.treeqy.Next;
  end;
end;
procedure Tf_fan.SpeedButton1Click(Sender: TObject);
var
  selectlist:integer;
begin
  selectlist:=0;
  with datamodule3 do
  begin
    treese.DataSet.First;
    while (datamodule3.treeqy.Eof=False) do
    begin
      datamodule3.treeqy.Edit;
      if (checklistbox1.Checked[selectlist]=true)  then
        datamodule3.treese.DataSet.Fields[2].AsString:='1'
      else
        datamodule3.treese.DataSet.Fields[2].AsString:='0';
        datamodule3.treeqy.Post;
        selectlist:=selectlist+1;
        datamodule3.treeqy.Next;
    end;
    close;
  end;
end;

procedure Tf_fan.FormCloseQuery(Sender: TObject; var CanClose: Boolean);
begin
   checklistbox1.Clear;
end;

end.