笔记本手动关闭显示器(附测试代码)

使用 Colse LCD，运行就关闭显示器，有鼠标或者键盘事件就会打开

 

unit OpenCloseMonitor;

interface

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

type
  TForm1 = class(TForm)
    ButtonCloseMonitor: TButton;
    procedure FormCreate(Sender: TObject);
    procedure ButtonCloseMonitorClick(Sender: TObject);
  private
    procedure OnAppMessage(var Msg: TMsg; var Handled: Boolean);
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.ButtonCloseMonitorClick(Sender: TObject);
begin
  // 关闭显示
  SendMessage(Handle, WM_SYSCOMMAND, SC_MONITORPOWER, 1);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Width := Screen.Width;
  Height := Screen.Height;

  ButtonCloseMonitor.Align := alClient;
  Application.OnMessage := OnAppMessage;
end;

procedure TForm1.OnAppMessage(var Msg: TMsg; var Handled: Boolean);
begin
  case Msg.message of
  WM_CHAR:
    begin
      // 打开显示
      SendMessage(Handle, WM_SYSCOMMAND, SC_MONITORPOWER, -1);
      Application.Terminate;
    end;
  end;
end;

end.