u_szcx.~pas

这是一个Delphi--仓库管理信息系统代码

unit U_szcx;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Forms, Dialogs, Controls, StdCtrls,
  Buttons, ExtCtrls;

type
  TfrmSzcx = class(TForm)
    Panel1: TPanel;
    SrcList: TListBox;
    IncludeBtn: TSpeedButton;
    IncAllBtn: TSpeedButton;
    ExcludeBtn: TSpeedButton;
    ExAllBtn: TSpeedButton;
    DstList: TListBox;
    Panel2: TPanel;
    SpeedButton1: TSpeedButton;
    SpeedButton2: TSpeedButton;
    procedure IncludeBtnClick(Sender: TObject);
    procedure ExcludeBtnClick(Sender: TObject);
    procedure IncAllBtnClick(Sender: TObject);
    procedure ExcAllBtnClick(Sender: TObject);
    procedure SpeedButton1Click(Sender: TObject);
    procedure FormActivate(Sender: TObject);
    procedure SpeedButton2Click(Sender: TObject);
    procedure SrcListDblClick(Sender: TObject);
    procedure DstListDblClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
    procedure MoveSelected(List: TCustomListBox; Items: TStrings);
    procedure SetItem(List: TListBox; Index: Integer);
    function GetFirstSelection(List: TCustomListBox): Integer;
    procedure SetButtons;
  end;

var
  frmSzcx: TfrmSzcx;
  Ordered: Boolean = False;
implementation

{$R *.DFM}

procedure TfrmSzcx.IncludeBtnClick(Sender: TObject);
var
  Index: Integer;
begin
  Index := GetFirstSelection(SrcList);
  MoveSelected(SrcList, DstList.Items);
  SetItem(SrcList, Index);
end;

procedure TfrmSzcx.ExcludeBtnClick(Sender: TObject);
var
  Index: Integer;
begin
  Index := GetFirstSelection(DstList);
  MoveSelected(DstList, SrcList.Items);
  SetItem(DstList, Index);
end;

procedure TfrmSzcx.IncAllBtnClick(Sender: TObject);
var
  I: Integer;
begin
  for I := 0 to SrcList.Items.Count - 1 do
    DstList.Items.AddObject(SrcList.Items[I],
      SrcList.Items.Objects[I]);
  SrcList.Items.Clear;
  SetItem(SrcList, 0);
end;

procedure TfrmSzcx.ExcAllBtnClick(Sender: TObject);
var
  I: Integer;
begin
  for I := 0 to DstList.Items.Count - 1 do
    SrcList.Items.AddObject(DstList.Items[I], DstList.Items.Objects[I]);
  DstList.Items.Clear;
  SetItem(DstList, 0);
end;

procedure TfrmSzcx.MoveSelected(List: TCustomListBox; Items: TStrings);
var
  I: Integer;
begin
  for I := List.Items.Count - 1 downto 0 do
    if List.Selected[I] then
    begin
      Items.AddObject(List.Items[I], List.Items.Objects[I]);
      List.Items.Delete(I);
    end;
end;

procedure TfrmSzcx.SetButtons;
var
  SrcEmpty, DstEmpty: Boolean;
begin
  SrcEmpty := SrcList.Items.Count = 0;
  DstEmpty := DstList.Items.Count = 0;
  IncludeBtn.Enabled := not SrcEmpty;
  IncAllBtn.Enabled := not SrcEmpty;
  ExcludeBtn.Enabled := not DstEmpty;
  ExAllBtn.Enabled := not DstEmpty;
end;

function TfrmSzcx.GetFirstSelection(List: TCustomListBox): Integer;
begin
  for Result := 0 to List.Items.Count - 1 do
    if List.Selected[Result] then Exit;
  Result := LB_ERR;
end;

procedure TfrmSzcx.SetItem(List: TListBox; Index: Integer);
var
  MaxIndex: Integer;
begin
  with List do
  begin
    SetFocus;
    MaxIndex := List.Items.Count - 1;
    if Index = LB_ERR then Index := 0
    else if Index > MaxIndex then Index := MaxIndex;
    Selected[Index] := True;
  end;
  SetButtons;
end;

procedure TfrmSzcx.SpeedButton1Click(Sender: TObject);
begin
  Ordered := True;
  close;
end;

procedure TfrmSzcx.FormActivate(Sender: TObject);
begin
  Ordered := False;
end;

procedure TfrmSzcx.SpeedButton2Click(Sender: TObject);
begin
  close;
end;

procedure TfrmSzcx.SrcListDblClick(Sender: TObject);
begin
  IncludeBtn.click;
end;

procedure TfrmSzcx.DstListDblClick(Sender: TObject);
begin
  ExcludeBtn.click;
end;

end.