基于<MediaElement>的WPF视频播放器（带部分特效）【2】
一、前言
上回说到需要做放视频的使用向导，这两天公司里的老司机一直帮我答疑解惑，让这个任务变得挺顺的，真心感谢他们！
这次与【1】中的不同之处在于：
（1）播放和暂停按钮集成在<MediaElement>的点击事件之中，点一下是播放，再点一下是暂停
（2）加入了微软官方改写的粒子特效
（3）加上了自己琢磨的按钮旋转效果，以及按钮弹出popup效果
（4）进度条改善美观
二、代码
前台：
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WPF_Nav"
xmlns:dxlc="http://schemas.devexpress.com/winfx/2008/xaml/layoutcontrol" xmlns:dxwui="http://schemas.devexpress.com/winfx/2008/xaml/windowsui" x:Class="WPF_Nav.MainWindow"
mc:Ignorable="d"
Title="MainWindow" Height="" Width="" WindowStyle="None" ResizeMode="NoResize" WindowStartupLocation ="CenterScreen" Loaded="Window_Loaded"> <Window.Resources>
<LinearGradientBrush x:Key="SliderBackground" StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0.5" Color="#00b3fe"/>
</LinearGradientBrush>
<LinearGradientBrush x:Key="SliderThumb" StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="" Color="#FFD9D3E8"/>
</LinearGradientBrush> <Style x:Key="Slider_RepeatButton" TargetType="RepeatButton">
<Setter Property="Focusable" Value="false" />
<Setter Property="Height" Value=""/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="RepeatButton">
<Border Background="{StaticResource SliderBackground}" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="Slider_RepeatButton1" TargetType="RepeatButton">
<Setter Property="Focusable" Value="false" />
<Setter Property="Height" Value=""/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="RepeatButton">
<Border Background="Silver" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="Slider_Thumb" TargetType="Thumb">
<Setter Property="Focusable" Value="false" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Thumb">
<Ellipse Name="e" Width="" Height="" Fill="White" Stroke="Gray"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style TargetType="Slider">
<Setter Property="Focusable" Value="false" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Slider">
<Grid>
<Border BorderBrush="Red" BorderThickness="" CornerRadius="0,0,0,0">
<Track Name="PART_Track">
<Track.DecreaseRepeatButton>
<RepeatButton Style="{StaticResource Slider_RepeatButton}" Command="Slider.DecreaseLarge"/>
</Track.DecreaseRepeatButton>
<Track.IncreaseRepeatButton>
<RepeatButton Style="{StaticResource Slider_RepeatButton1}" Command="Slider.IncreaseLarge"/>
</Track.IncreaseRepeatButton>
<Track.Thumb>
<Thumb Style="{StaticResource Slider_Thumb}"/>
</Track.Thumb>
</Track>
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="Button_Close" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Image x:Name="IMG" Source="E:\Test\WPFTest\Sources\Close.jpg"></Image>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="Button_Forbidden" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Image x:Name="IMG" Source="E:\Test\WPFTest\Sources\Forbidden.jpg"></Image>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="Button_Left" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Image x:Name="IMG" Source="E:\Test\WPFTest\Sources\Left.png" Stretch="Fill"></Image>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="Button_Right" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Image x:Name="IMG" Source="E:\Test\WPFTest\Sources\Right.png" Stretch="Fill"></Image>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> </Window.Resources> <Grid Name="Main_Grid">
<Grid.RowDefinitions>
<RowDefinition Height=""></RowDefinition>
<RowDefinition Height=""></RowDefinition>
<RowDefinition Height=""></RowDefinition>
</Grid.RowDefinitions> <Border Name="title_Border" BorderBrush="#FBD3D0CD" BorderThickness="" Grid.Row="">
<Grid Name="Title">
<Grid.ColumnDefinitions>
<ColumnDefinition Width=""></ColumnDefinition>
<ColumnDefinition Width=""></ColumnDefinition>
<ColumnDefinition Width=""></ColumnDefinition>
<ColumnDefinition Width=""></ColumnDefinition>
</Grid.ColumnDefinitions> <Grid Grid.Column="">
<Canvas x:Name="ParticleHost" Width="" >
<TextBlock Name="txtB_Step" Grid.Column="" Width="" Height="" TextAlignment="Center" FontSize="" FontFamily="Microsoft YaHei" Text="asss" Margin="100,7,0,0"/>
</Canvas>
</Grid> <Grid Name="grid_Cofig" Grid.Column="">
<Button Name="btn_Forbidden" Width="" Click="Config_Click" Margin="2,10,48,12" HorizontalAlignment="Center" Focusable="False" Style="{StaticResource Button_Forbidden}" RenderTransformOrigin="0.5,0.5" ToolTipService.ToolTip="播放设置" ToolTipService.InitialShowDelay="" ToolTipService.Placement="Bottom">
<Button.RenderTransform>
<RotateTransform x:Name="trans_forbidden" Angle=""/>
</Button.RenderTransform>
<Button.Triggers>
<EventTrigger RoutedEvent="Button.MouseEnter">
<BeginStoryboard >
<Storyboard>
<DoubleAnimation From="" To="" Duration="0:0:0.4"
Storyboard.TargetName="trans_forbidden"
Storyboard.TargetProperty="Angle"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
</Button>
</Grid> <Popup x:Name="Pop" PopupAnimation="Slide" Placement="Bottom" Width="" Height="" PlacementTarget="{Binding ElementName=grid_Cofig}" AllowsTransparency="True" StaysOpen="False" IsOpen="False" >
<Border Background="White" BorderBrush="#FFC4C9CD" BorderThickness="" Width="">
<StackPanel Margin="">
<StackPanel Name="sp_play" Orientation="Horizontal" Width="" Height="" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="" MouseEnter="sp_play_enter" MouseLeave="sp_play_leave" >
<CheckBox x:Name="ch_play" VerticalAlignment="Center" Margin="3,4" />
<TextBlock x:Name="txb_play" Text="不再播放" Margin="5,0" VerticalAlignment="Center"/>
</StackPanel>
<StackPanel Name="sp_doc" Width="" Height="" Orientation="Horizontal" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="" MouseEnter="sp_doc_enter" MouseLeave="sp_doc_leave">
<TextBlock Name="txb_Doc" Text="官方帮助文档" Margin="4,0,5,0" VerticalAlignment="Center">
</TextBlock>
</StackPanel>
</StackPanel>
</Border>
</Popup> <Button Name="btn_Close" Grid.Column="" Width="" Click="Close_Click" Margin="37,10,13,12" HorizontalAlignment="Center" Focusable="False" Style="{StaticResource Button_Close}" RenderTransformOrigin="0.5,0.5" ToolTipService.ToolTip="关闭视频" ToolTipService.InitialShowDelay="" ToolTipService.Placement="Bottom">
<Button.RenderTransform>
<RotateTransform x:Name="trans" Angle=""/>
</Button.RenderTransform>
<Button.Triggers>
<EventTrigger RoutedEvent="Button.MouseEnter">
<BeginStoryboard >
<Storyboard>
<DoubleAnimation From="" To="" Duration="0:0:0.4"
Storyboard.TargetName="trans"
Storyboard.TargetProperty="Angle"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
</Button> </Grid>
</Border> <Grid Name="Movie" Grid.Row="">
<MediaElement Stretch="Fill" LoadedBehavior="Manual" Name="QS_Movie" MediaOpened="Element_MediaOpened" Loaded="QS_Movie_Loaded" MouseLeftButtonDown="QS_Movie_MouseLeftButtonDown" />
<Button Name="btn_pre" Width="" Height="" HorizontalAlignment="Left" VerticalAlignment="Center" Click="Left_Click" Focusable="False" Style="{StaticResource Button_Left}"/>
<Button Name="btn_next" Width="" Height="" HorizontalAlignment="Right" VerticalAlignment="Center" Click="Right_Click" Focusable="False" Style="{StaticResource Button_Right}"/>
</Grid> <Border Name="Progress_Border" BorderBrush="#FBD3D0CD" BorderThickness="" Grid.Row="">
<Grid Name="Control_Progress" >
<Slider Grid.Column="" Width="" Name="timelineSlider" VerticalAlignment="Center" PreviewMouseLeftButtonDown="timelineMDown" PreviewMouseLeftButtonUp="timelineMUp" BorderThickness="0,6,0,0" />
</Grid>
</Border> </Grid>
</Window>
后台：
using System.Windows.Media;
using System.Windows.Media.Effects;
using System.Windows.Shapes; namespace WPF_Nav
{
public class Particle
{
public Point3D Position { get; set; }
public Point3D Velocity { get; set; }
public double Size { get; set; }
public Ellipse Ellipse { get; set; }
public BlurEffect Blur { get; set; }
public Brush Brush { get; set; }
}
}
namespace WPF_Nav
{
public class Point3D
{
public double X { get; set; }
public double Y { get; set; }
public double Z { get; set; } public Point3D(double X, double Y, double Z)
{
this.X = X;
this.Y = Y;
this.Z = Z;
}
}
}
主体：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;
using System.Windows.Media.Effects; namespace WPF_Nav
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
DispatcherTimer dispatcherTimer = new System.Windows.Threading.DispatcherTimer(); // 定义一个DT
bool play_flag = true; //判断播放状态
int play_now = ; //判断当前视频索引
int play_target;
List<string> Play_Video = new List<string>();
List<string> Title_Video = new List<string>(); public MainWindow()
{
InitializeComponent();
Play_Video = LoadMovies();
Title_Video = LoadTitles();
} private List<string> LoadTitles()
{
List<string> list_title = new List<string>();
list_title.Add("Step1");
list_title.Add("Step2");
list_title.Add("Step3");
return list_title;
}
private List<string> LoadMovies()
{
List<string> Movie_Uri = new List<string>();
Movie_Uri.Add(@"E:\Test\WPFTest\Sources\preview.mp4");
Movie_Uri.Add(@"E:\Test\WPFTest\Sources\preview1.mp4");
Movie_Uri.Add(@"E:\Test\WPFTest\Sources\preview2.mp4");
return Movie_Uri;
} private void Play_Click(object sender, RoutedEventArgs e)
{
QS_Movie.Play();
} private void Pause_Click(object sender, RoutedEventArgs e)
{
QS_Movie.Pause();
} private void Element_MediaOpened(object sender, EventArgs e)
{
timelineSlider.Maximum = QS_Movie.NaturalDuration.TimeSpan.TotalMilliseconds; //设置slider最大值
dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick); //超过计时间隔时发生
dispatcherTimer.Interval = new TimeSpan(, , , , ); //DT间隔
dispatcherTimer.Start(); //DT启动
} private void dispatcherTimer_Tick(object sender, EventArgs e)
{
int time = (int)QS_Movie.Position.TotalSeconds;
timelineSlider.ToolTip = SecToTime(time);
timelineSlider.Value = QS_Movie.Position.TotalMilliseconds; //slider滑动值随播放内容位置变化
} private string SecToTime(int sec)
{
int min = sec / ;
sec = sec - min * ;
int hour = min / ;
min = min - hour * ;
string h = hour.ToString();
string mm = ((min < ) ? "" : "") + min.ToString();
string ss = ((sec < ) ? "" : "") + sec.ToString();
string time = h + ":" + mm + ":" + ss;
return time;
}
private void timelineMDown(object sender, EventArgs e)
{
dispatcherTimer.Stop();
}
private void timelineMUp(object sender, EventArgs e)
{
QS_Movie.Position = new TimeSpan(, , , , (int)timelineSlider.Value);
dispatcherTimer.Start();
QS_Movie.Play();
} private void QS_Movie_Loaded(object sender, RoutedEventArgs e)
{
PreLoad(,play_now); } private void Left_Click(object sender, RoutedEventArgs e)
{
play_target = (play_now + Play_Video.Count-) % Play_Video.Count;
PreLoad(, play_target);
play_now = play_target;
} private void Right_Click(object sender, RoutedEventArgs e)
{
play_target = (play_now + ) % Play_Video.Count;
PreLoad(, play_target);
play_now = play_target;
} private void PreLoad(int interval, int index)
{
QS_Movie.Source = new Uri(Play_Video[index]);
QS_Movie.Play();
System.Threading.Thread.Sleep(interval);
QS_Movie.Pause();
txtB_Step.Text = Title_Video[index];
} private void QS_Movie_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{ if(play_flag==true)
{
QS_Movie.Play();
btn_pre.Visibility = System.Windows.Visibility.Hidden;
btn_next.Visibility = btn_pre.Visibility = System.Windows.Visibility.Hidden;
}
if(play_flag==false)
{
QS_Movie.Pause();
btn_pre.Visibility = System.Windows.Visibility.Visible;
btn_next.Visibility = System.Windows.Visibility.Visible; }
play_flag = !play_flag;
} private void Close_Click(object sender, RoutedEventArgs e)
{
this.Close();
} private void Config_Click(object sender, RoutedEventArgs e)
{
this.Pop.IsOpen = true;
} private void sp_play_enter(object sender, MouseEventArgs e)
{
Brush br_bg = new SolidColorBrush(Color.FromRgb(, , ));
Brush br_white = new SolidColorBrush(Color.FromRgb(, , ));
txb_play.Foreground = br_white;
sp_play.Background = br_bg;
} private void sp_play_leave(object sender, MouseEventArgs e)
{
Brush br_white = new SolidColorBrush(Color.FromRgb(, , ));
Brush br_black = new SolidColorBrush(Color.FromRgb(, , ));
txb_play.Foreground = br_black;
sp_play.Background = br_white;
} private void sp_doc_enter(object sender, MouseEventArgs e)
{
Brush br_bg = new SolidColorBrush(Color.FromRgb(, , ));
Brush br_white = new SolidColorBrush(Color.FromRgb(, , ));
txb_Doc.Foreground = br_white;
sp_doc.Background = br_bg;
} private void sp_doc_leave(object sender, MouseEventArgs e)
{
Brush br_white = new SolidColorBrush(Color.FromRgb(, , ));
Brush br_black = new SolidColorBrush(Color.FromRgb(, , ));
txb_Doc.Foreground = br_black;
sp_doc.Background = br_white;
} /// <summary>
/// 特效部分
/// </summary> List<Particle> particles = new List<Particle>();
List<Particle> deadList = new List<Particle>();
Random random = new Random(); private void Window_Loaded(object sender, RoutedEventArgs e)
{
timer.Interval = TimeSpan.FromMilliseconds();
timer.Tick += new EventHandler(timer_Tick);
timer.Start();
} void timer_Tick(object sender, EventArgs e)
{
UpdateParticules();
} DispatcherTimer timer = new DispatcherTimer(); double elapsed = 0.1;
private void UpdateParticules()
{
//更新粒子信息
deadList.Clear();
foreach (Particle p in this.particles)
{
if (p.Position.Y < -p.Size || p.Position.X < -p.Size || p.Position.X > Width + p.Size)
{
deadList.Add(p);
}
else
{
//更新位置
p.Position.X += p.Velocity.X * elapsed;
p.Position.Y += p.Velocity.Y * elapsed;
p.Position.Z += p.Velocity.Z * elapsed;
TranslateTransform t = (p.Ellipse.RenderTransform as TranslateTransform);
t.X = p.Position.X;
t.Y = p.Position.Y; //更新颜色信息
p.Ellipse.Fill = p.Brush;
p.Ellipse.Effect = p.Blur;
}
} //创建新的粒子
for (int i = ; i < && this.particles.Count < ; i++)
{
//尝试循环使用已有例子
if (deadList.Count - >= i)
{
SpawnParticle(deadList[i].Ellipse);
deadList[i].Ellipse = null;
}
else
{
SpawnParticle(null);
}
} foreach (Particle p in deadList)
{
if (p.Ellipse != null) ParticleHost.Children.Remove(p.Ellipse);
this.particles.Remove(p);
}
} private void SpawnParticle(Ellipse e)
{
double x = RandomWithVariance(Width / , Width / );
double y = Height;
double z = * (random.NextDouble() * );
double speed = RandomWithVariance(, );
double size = RandomWithVariance(,); Particle p = new Particle();
p.Position = new Point3D(x, y, z);
p.Size = size; //模糊
var blur = new BlurEffect();
blur.RenderingBias = RenderingBias.Performance;
blur.Radius = RandomWithVariance(, );
p.Blur = blur;
//颜色
var brush = (Brush)Brushes.Lime.Clone();
brush.Opacity = RandomWithVariance(0.6, 0.5);
p.Brush = brush; TranslateTransform t; if (e != null)
{
e.Fill = null;
e.Width = e.Height = size;
p.Ellipse = e; t = e.RenderTransform as TranslateTransform;
}
else
{
p.Ellipse = new Ellipse();
p.Ellipse.Width = p.Ellipse.Height = size;
this.ParticleHost.Children.Add(p.Ellipse); t = new TranslateTransform();
p.Ellipse.RenderTransform = t;
p.Ellipse.RenderTransformOrigin = new Point(0.5, 0.5); } t.X = p.Position.X;
t.Y = p.Position.Y; double velocityMultiplier = (random.NextDouble() + 0.25) * speed;
double vX = (1.0 - (random.NextDouble() * 2.0)) * velocityMultiplier;
double vY = -Math.Abs((1.0 - (random.NextDouble() * 2.0)) * velocityMultiplier); p.Velocity = new Point3D(vX, vY, ); this.particles.Add(p);
} private double RandomWithVariance(double midvalue, double variance)
{
double min = Math.Max(midvalue - (variance / ), );
double max = midvalue + (variance / );
double value = min + ((max - min) * random.NextDouble());
return value;
} } }
三、效果
四、小结
WPF挺好玩的！前台就能解决一些基本的动画效果，加上后台简直爽。最后，感谢单位的老司机们！
基于<MediaElement>的WPF视频播放器（带部分特效）【2】的更多相关文章
- 基于<MediaElement>的WPF视频播放器（可拖拽进度条播放）【1】
一.前言 前两天上峰要求做一个软件使用向导,使用WPF制作.这不,这两天从一张白纸开始学起,做一个播放演示视频的使用向导.以下是粗设计的原型代码: 二.效果图 三.代码 前台代码: < ...
- 基于<MediaElement>的WPF视频播放器（终章）【3】
一.前言 对于<MediaElement>前两章介绍了差不多了,其实好的界面还需要UI工程师的配合,比如帮忙设计下按钮的样式等等.同样视频本身也需要吸引人,不然做的再好的播放器也没用.之后 ...
- 封装：WPF基于MediaElement封装的视频播放器
原文:封装:WPF基于MediaElement封装的视频播放器 一.目的:应用MediaElement创建媒体播放器 二.效果图 三.目前支持功能 播放.暂停.停止.快进.快退.声音大小.添加播放列表 ...
- 【MediaElement】WPF视频播放器【1】
一.前言 前两天上峰要求做一个软件使用向导,使用WPF制作.这不,这两天从一张白纸开始学起,做一个播放演示视频的使用向导.以下是粗设计的原型代码: 二.效果图 三.代码 前台代码: < ...
- 【MediaElement】WPF视频播放器【3】
一.前言 对于<MediaElement>前两章介绍了差不多了,其实好的界面还需要UI工程师的配合,比如帮忙设计下按钮的样式等等.同样视频本身也需要吸引人,不然做的再好的播放器也没用.之后 ...
- 【MediaElement】WPF视频播放器【2】
一.前言 上回说到需要做放视频的使用向导,这两天公司里的老司机一直帮我答疑解惑,让这个任务变得挺顺的,真心感谢他们! 这次与[1]中的不同之处在于: (1)播放和暂停按钮集成在<Me ...
- 最简单的基于FFMPEG+SDL的视频播放器 ver2 （採用SDL2.0）
===================================================== 最简单的基于FFmpeg的视频播放器系列文章列表: 100行代码实现最简单的基于FFMPEG ...
- 最简单的基于FFMPEG+SDL的视频播放器 ver2 （采用SDL2.0）
===================================================== 最简单的基于FFmpeg的视频播放器系列文章列表: 100行代码实现最简单的基于FFMPEG ...
- 基于<最简单的基于FFMPEG+SDL的视频播放器 ver2 （采用SDL2.0）>的一些个人总结
最近因为项目接近收尾阶段,所以变的没有之前那么忙了,所以最近重新拿起了之前的一些FFMPEG和SDL的相关流媒体播放器的例子在看. 同时自己也用FFMPEG2.01,SDL2.01结合MFC以及网上罗 ...
随机推荐
- 《C#图解教程》读书笔记之二：存储、类型和变量
本篇已收录至<C#图解教程>读书笔记目录贴,点击访问该目录可获取更多内容. 一.类型初窥:掀起你的盖头来 (1)C程序是一组函数和数据类型,C++程序是一组函数和类,而C#程序是一组类型声 ...
- 团队项目——站立会议 DAY8
第八次站立会议记录: 参会人员:张靖颜,钟灵毓秀,何玥,赵莹,王梓萱 项目进展: 1.张靖颜:在反复修改和审查后,处理功能模块代码出错处,完善并运行. 2.钟灵毓秀:再次检查代码,运行报错处的代码修改 ...
- 细说.NET中的多线程 (二 线程池)
上一章我们了解到,由于线程的创建,销毁都是需要耗费大量资源和时间的,开发者应该非常节约的使用线程资源.最好的办法是使用线程池,线程池能够避免当前进行中大量的线程导致操作系统不停的进行线程切换,当线程数 ...
- 搭建LNAMP环境（四）- 源码安装PHP7
上一篇:搭建LNAMP环境(三)- 源码安装Apache2.4 一.安装PHP7 1.yum安装编译php需要的包 yum -y install libxml2 libxml2-devel curl- ...
- DOM对象 与 jQuery对象 之间的相互装换
示例代码: //jQuery对象转DOM对象 //因为jQuery对象是一个数组对象,所以转换为DOM对象时要用索引的形式 var $div1 = $("#div1"); //jQ ...
- Android WebView 总结 —— Java和JavaScript交互
交互如何实现 实现Java和js交互十分便捷.通常只需要以下几步. WebView开启JavaScript脚本执行 WebView设置供JavaScript调用的交互接口. 客户端和网页端编写调用对方 ...
- 每天一个linux命令（10）：cat 命令
cat命令的用途是连接文件或标准输入并打印.这个命令常用来显示文件内容,或者将几个文件连接起来显示,或者从标准输入读取内容并显示,它常与重定向符号配合使用. 1．命令格式: cat [选项] [文件] ...
- Microsoft Visual Studio正忙解决办法
问题描述 前段时间用vs2015进行开发.出现如下问题,关闭vs进程重启vs还是无法解决. 如何解决 进入本地项目.vs文件夹 这个文件夹下有个.suo文件,删除该文件,用任务管理器杀掉vs的进程,重 ...
- 锁&锁与指令原子操作的关系 & cas_Queue
锁 锁以及信号量对大部分人来说都是非常熟悉的,特别是常用的mutex.锁有很多种,互斥锁,自旋锁,读写锁,顺序锁,等等,这里就只介绍常见到的, 互斥锁 这个是最常用的,win32:CreateMute ...
- Comet服务器推送与SignalR
HTTP协议是一个典型的Request/Response协议,是基于TCP/IP之上的一个应用层协议,该协议最典型的特点就是无状态且需要客户端发起Request服务端才能进行Response, ...