X分钟后出现空白屏幕
本文关键字:空白 屏幕 分钟 | 更新日期: 2023-09-27 18:00:11
我觉得我没有足够的休息时间,在电脑上我的眼睛有点紧张。我尽可能多地执行20分钟规则,但一旦进入区域,我往往会忘记执行。
我想制作一个快速应用程序(如果有,请指给我看),在20分钟后(可能是倒计时前10秒),它会关闭屏幕或清空屏幕,或者强迫我休息一下。
不确定C#是否有权访问类似的api,也不确定它应该是控制台应用程序还是wpf应用程序。它需要在启动时启动,并且可能存在于任务栏中。
有什么建议吗?
编辑
如果它太宽泛,这里就是我在之后的样子
- C#可以在X分钟后清空屏幕吗?X秒后恢复正常
- 要完成这样的定时任务,最好使用gui,或者我可以用控制台应用程序(尝试将其设置为尽可能快)
要打开/关闭,可以使用以下类:
public static class MonitorHelper
{
[DllImport("user32.dll")]
public static extern int SendMessage(int hWnd, int Msg, int wParam, int lParam);
public static void TurnOn()
{
SendMessage(-1, WM_SYSCOMMAND, SC_MONITORPOWER, MONITOR_ON);
}
public static void TurnOff()
{
SendMessage(-1, WM_SYSCOMMAND, SC_MONITORPOWER, MONITOR_OFF);
}
const int SC_MONITORPOWER = 0xF170;
const int WM_SYSCOMMAND = 0x0112;
const int MONITOR_ON = -1;
const int MONITOR_OFF = 2;
}
MonitorHelper
类的用法:
class Program
{
static void Main(string[] args)
{
MonitorHelper.TurnOff();
Thread.Sleep(TimeSpan.FromSeconds(2));
MonitorHelper.TurnOn();
}
}
如果你想用打开/关闭监视器来安排你的任务,你可以使用Quartz.NET.
Quartz.NET示例:
工作类别:
class MonitorJob : IJob
{
public void Execute(IJobExecutionContext context)
{
MonitorHelper.TurnOff();
Thread.Sleep(TimeSpan.FromSeconds(2));
MonitorHelper.TurnOn();
}
}
配置代码:
ISchedulerFactory schedFact = new StdSchedulerFactory();
IScheduler sched = schedFact.GetScheduler();
IJobDetail job = JobBuilder.Create<MonitorJob>()
.WithIdentity("monitorJob", "group")
.Build();
ITrigger trigger = TriggerBuilder.Create()
.WithIdentity("monitorTrigger", "group")
.StartNow()
.WithSimpleSchedule(x => x.WithIntervalInMinutes(1).RepeatForever())
.Build();
sched.ScheduleJob(job, trigger);
sched.Start();
带有PostMessage的MonitorHelper类:
class MonitorHelperEx
{
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll", SetLastError = true)]
static extern bool PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
public static void TurnOn()
{
PostMessageSafe(new IntPtr(-1), WM_SYSCOMMAND, SC_MONITORPOWER, MONITOR_ON);
}
public static void TurnOff()
{
PostMessageSafe(new IntPtr(-1), WM_SYSCOMMAND, SC_MONITORPOWER, MONITOR_OFF);
}
static void PostMessageSafe(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
{
bool returnValue = PostMessage(hWnd, msg, wParam, lParam);
if (!returnValue)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
static readonly IntPtr SC_MONITORPOWER = new IntPtr(0xF170);
static readonly uint WM_SYSCOMMAND = 0x0112;
static readonly IntPtr MONITOR_ON = new IntPtr(-1);
static readonly IntPtr MONITOR_OFF = new IntPtr(2);
}
您可以使用WPF应用程序和Quartz.NET.
在这种情况下,您可以将自定义内容添加到窗口中,例如时钟,当屏幕被阻止时,它就会显示出来。
主窗口.xaml:
<Window x:Class="WPFBlankScreen.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525"
WindowState="Minimized"
Background="Orange"
KeyDown="Window_KeyDown"
>
<Grid>
</Grid>
</Window>
代码背后:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
Init();
}
private void Init()
{
ISchedulerFactory schedFact = new StdSchedulerFactory();
IScheduler sched = schedFact.GetScheduler();
IDictionary<string, object> map = new Dictionary<string, object>();
map.Add("window", this);
IJobDetail job = JobBuilder.Create<ShowJob>()
.WithIdentity("showJob", "group")
.UsingJobData(new JobDataMap(map))
.Build();
ITrigger trigger = TriggerBuilder.Create()
.WithIdentity("showTrigger", "group")
.StartNow()
.WithSimpleSchedule(x => x.WithIntervalInMinutes(1).RepeatForever())
.Build();
sched.ScheduleJob(job, trigger);
sched.Start();
}
private void Window_KeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.F11)
{
this.Hide();
}
}
}
ShowJob类别:
class ShowJob: IJob
{
public void Execute(IJobExecutionContext context)
{
Window win = context.JobDetail.JobDataMap.Get("window") as Window;
if (win != null)
{
Application.Current.Dispatcher.Invoke((Action)(() =>
{
win.Width = System.Windows.SystemParameters.FullPrimaryScreenWidth;
win.Height = System.Windows.SystemParameters.FullPrimaryScreenHeight;
win.WindowStartupLocation = WindowStartupLocation.CenterScreen;
win.WindowStyle = WindowStyle.None;
win.Topmost = true;
win.WindowState = WindowState.Maximized;
win.Show();
}));
IDictionary<string, object> map = new Dictionary<string, object>();
map.Add("window", win);
IJobDetail job = JobBuilder.Create<HideJob>()
.WithIdentity("hideJob", "group")
.UsingJobData(new JobDataMap(map))
.Build();
ITrigger trigger = TriggerBuilder.Create()
.WithIdentity("hideTrigger", "group")
.StartAt(DateBuilder.FutureDate(5, IntervalUnit.Second))
.Build();
context.Scheduler.ScheduleJob(job, trigger);
}
}
}
HideJob类:
class HideJob: IJob
{
public void Execute(IJobExecutionContext context)
{
Window win = context.JobDetail.JobDataMap.Get("window") as Window;
if (win != null && Application.Current != null)
{
Application.Current.Dispatcher.Invoke((Action)(() =>
{
win.Hide();
}));
}
}
}
我的答案可能并不花哨,但它非常简单,而且很有效:
在新的Winforms项目中,执行以下操作:
-设置FormBorderStyle=无
-设置背景颜色=红色(或您想要的任何颜色)
-Set TopMost=True
-设置WindowState=最大化
-在窗体上放置计时器
-将计时器间隔设置为2000
-设置计时器已启用=true
-双击计时器并写入Close();在事件处理程序中。
完成!
编辑;这只会使一个屏幕亮红色两秒钟,但你应该能够注意到这一点。。。。
这就是关闭屏幕的方法
using System.Runtime.InteropServices; //to DllImport
public int WM_SYSCOMMAND = 0x0112;
public int SC_MONITORPOWER = 0xF170; //Using the system pre-defined MSDN constants
that can be used by the SendMessage() function .
[DllImport("user32.dll")]
private static extern int SendMessage(int hWnd, int hMsg, int wParam, int lParam);
//To call a DLL function from C#, you must provide this declaration .
private void button1_Click(object sender, System.EventArgs e)
{
SendMessage( this.Handle.ToInt32() , WM_SYSCOMMAND , SC_MONITORPOWER ,2 );//DLL
function
}