unit2.pas

来自「ZIP压缩算法 delphi组件 含代码」· PAS 代码 · 共 67 行

Unit Unit2;

Interface

Uses
   Windows,
   Messages,
   SysUtils,
   Classes,
   Graphics,
   Controls,
   Forms,
   Dialogs,
   StdCtrls,
   ztvZipView,
   ComCtrls;

Type
   TForm2 = Class(TForm)
      ListView1: TListView;
      Procedure FormKeyDown(Sender: TObject; Var Key: Word; Shift: TShiftState);
   Private
      { Private declarations }
   Public
      { Public declarations }
   End;

Var
   Form2: TForm2;

Implementation

{$R *.DFM}

//-------------------------------------------------------------

Procedure TForm2.FormKeyDown(Sender: TObject; Var Key: Word; Shift: TShiftState);
Var
   RestoreIndex: Integer;
   SelectedItem: TListItem;
Begin
   (* Esc Key *)
   If Key = 27 Then
      Close()
         (* Delete key *)
   Else
      If (Key = 46) And (ListView1.Selected <> Nil) Then
      Begin

         SelectedItem := ListView1.Selected;
         If ListView1.Selected.Index + 1 < ListView1.Items.Count Then
            RestoreIndex := ListView1.Selected.Index
         Else
            RestoreIndex := ListView1.Selected.Index - 1;

         SelectedItem.Delete();

         If ListView1.Items.Count > 0 Then
            ListView1.Items[RestoreIndex].Selected := True;

      End;

End;
//-------------------------------------------------------------

End.