如何屏蔽一个按键
unit CPower; interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs; type TForm1 = class(TForm) procedure FormPaint(Sender: TObject); private { Private declarations } procedure WMPowerBroadcast(var message: TMessage); message WM_POWERBROADCA ST; public { Public declarations } end; var Form1: TForm1; implementation {$R *.DFM} { TForm1 } procedure TForm1.WMPowerBroadcast(var message: TMessage); const SkipNextPowerMsg:boolean=True; begin if SkipNextPowerMsg then begin SetForegroundWindow(Self.Handle); if Application.MessageBox('是否关闭系统？','警告',MB_OKCANCEL + MB_DEFBU TTON2)<>IDOK then begin message.Result := BROADCAST_QUERY_DENY; SkipNextPowerMsg:=not SkipNextPowerMsg; end else Close; end else SkipNextPowerMsg:=not SkipNextPowerMsg; end; procedure TForm1.FormPaint(Sender: TObject); begin Self.Visible:=False; end; end.
