ScreenToGif项目由四个文件夹组成：
- Files 存放协议文件
- GifRecorder 存放gif编码器代码
- ScreenToGif 存放主代码
- Other 存放Hooktest和Translator的代码
问题1：GifRecorder 和ScreenToGif、Hooktest、Translator 下面都有了一个Properties，里面有个AssemblyInfo.cs是什么东西？
.net工程的Properties文件夹下自动生成一个名为AssemblyInfo.cs的文件，一般情况下我们很少直接改动该文件。但我们实际上通过另一个形式操作该文件。那就是通过在鼠标右键点击项目的属性进入“应用程序”->“程序集信息”，然后修改信息。
程序集指的是DLL或者EXE等可执行文件。
问题2：启动界面分析
<Window x:Class="ScreenToGif.Windows.Other.Startup"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:n="clr-namespace:ScreenToGif.Controls"
xmlns:u="clr-namespace:ScreenToGif.Util"
Title="{DynamicResource Title.StartUp}" Height="220" Width="500" Icon="/Resources/Logo.ico" WindowStartupLocation="CenterScreen"
MinWidth="500" MinHeight="220" UseLayoutRounding="True" Loaded="Startup_OnLoaded">
<Window.CommandBindings>
<CommandBinding Command="u:Commands.NewRecording" CanExecute="Buttons_CanExecute" Executed="Recorder_Executed"/>
<CommandBinding Command="u:Commands.NewWebcamRecording" CanExecute="Buttons_CanExecute" Executed="WebcamRecorder_Executed"/>
<CommandBinding Command="u:Commands.NewBoardRecording" CanExecute="Buttons_CanExecute" Executed="Board_Executed"/>
<CommandBinding Command="u:Commands.Editor" CanExecute="Buttons_CanExecute" Executed="Editor_Executed"/>
<CommandBinding Command="u:Commands.Update" CanExecute="Update_CanExecute" Executed="Update_Executed"/>
<CommandBinding Command="u:Commands.Options" CanExecute="Buttons_CanExecute" Executed="Options_Executed"/>
<!--Command后面是命令的名字，实际执行的函数是executed里写的函数 其他控件必须指明command这个属性
应用场景是菜单栏和工具栏的功能相同，我们要将其映射到同一个command。还有就是一个控件禁用后，相同功能的控件也要一起被禁用，这有CanExecute 来帮助同步，同时可用，或者同时不可用->
</Window.CommandBindings>
<Grid>
<Grid.RowDefinitions> <!--行定义-->
<RowDefinition Height="45"/>
<RowDefinition />
</Grid.RowDefinitions>
<Grid Grid.Row="0">
<Grid.ColumnDefinitions> <!--列定义-->
<ColumnDefinition/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Label Grid.Column="0" Content="ScreenToGif" Margin="5" FontSize="18" Foreground="#FF251E46" Effect="{DynamicResource Shadow.Black.Small}"/>
<!--<n:ImageButton Grid.Column="1" x:Name="BoardButton2" Text="Test" Content="{StaticResource Vector.Info}"
Margin="5" Style="{StaticResource Style.Button.Horizontal}" Effect="{StaticResource Shadow.Foreground.Small}"
Padding="3" MaxSize="25" Click="TestButton_OnClick" Visibility="Collapsed"/>-->
<TextBlock Grid.Column="1" Name="UpdateTextBlock" VerticalAlignment="Center" Visibility="Hidden" Effect="{StaticResource Shadow.Black.Small}">
<!--WPF Visibility的用法 Visible 元素在窗体中正常显示 Collaspsed 元素不显示，也不占用空间 Hidden 元素不显示，但是任然为它保留空间 -->
<Hyperlink Command="u:Commands.Update" ToolTip="{DynamicResource NewRelease.Tooltip}" Cursor="Hand">
<Run Name="UpdateRun" Text="{DynamicResource NewRelease}"/>
<!--run指明一连串格式化的或者格式化的内联文本，类似html的<span>-->
</Hyperlink>
</TextBlock>
<n:ImageButton Grid.Column="3" x:Name="OptionsButton" Text="{DynamicResource Options}" Content="{StaticResource Vector.Options}"
Margin="5" Style="{StaticResource Style.Button.Horizontal}" Effect="{StaticResource Shadow.Black.Small}"
Padding="2" MaxSize="25" Command="u:Commands.Options"/>
<!--Effect是简单的像素处理 content属性显示图片 text 显示文本-->
</Grid>
<Grid Grid.Row="1">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<n:ImageButton Grid.Column="0" x:Name="RecordButton" Text="{DynamicResource Recorder}" Margin="5,0,5,5"
Effect="{StaticResource Shadow.Black.Tiny}" MaxSize="36" Content="{StaticResource Vector.Record.New}"
Command="u:Commands.NewRecording" Style="{StaticResource Style.Button.Vertical.Border}" FontSize="13">
<n:ImageButton.ToolTip>
<n:HeaderedTooltip Header="{DynamicResource Recorder}" Text="{DynamicResource Tooltip.Recorder}"
MaxWidth="250" Placement="Bottom" HorizontalOffset="-5"/>
</n:ImageButton.ToolTip>
</n:ImageButton>
<n:ImageButton Grid.Column="1" x:Name="WebcamButton" Text="{DynamicResource Webcam}" Margin="5,0,5,5"
Effect="{StaticResource Shadow.Black.Tiny}" MaxSize="36" Content="{StaticResource Vector.Camera.New}"
Command="u:Commands.NewWebcamRecording" Style="{StaticResource Style.Button.Vertical.Border}" FontSize="13">
<n:ImageButton.ToolTip>
<n:HeaderedTooltip Header="{DynamicResource Webcam}" Text="{DynamicResource Tooltip.Webcam}" MaxWidth="250" Placement="Bottom" HorizontalOffset="-5"/>
</n:ImageButton.ToolTip>
</n:ImageButton>
<n:ImageButton Grid.Column="2" x:Name="BoardButton" Text="{DynamicResource Board}" Margin="5,0,5,5"
Effect="{StaticResource Shadow.Black.Tiny}" MaxSize="36" Content="{StaticResource Vector.Board.New}"
Command="u:Commands.NewBoardRecording" Style="{StaticResource Style.Button.Vertical.Border}" FontSize="13">
<n:ImageButton.ToolTip>
<n:HeaderedTooltip Header="{DynamicResource Board}" Text="{DynamicResource Tooltip.Board}" MaxWidth="250" Placement="Bottom" HorizontalOffset="-5"/>
</n:ImageButton.ToolTip>
</n:ImageButton>
<n:ImageButton Grid.Column="3" x:Name="EditorButton" Text="{DynamicResource Editor}" Margin="5,0,5,5"
Effect="{StaticResource Shadow.Black.Tiny}" MaxSize="35" Content="{StaticResource Vector.Editor}"
Command="u:Commands.Editor" Style="{StaticResource Style.Button.Vertical.Border}" FontSize="13">
<n:ImageButton.ToolTip>
<n:HeaderedTooltip Header="{DynamicResource Editor}" Text="{DynamicResource Tooltip.Editor}" MaxWidth="250" Placement="Bottom" HorizontalOffset="-5"/>
</n:ImageButton.ToolTip><!---这有一个浮动提示->
</n:ImageButton>
</Grid>
</Grid>
</Window>
问题3：使用的静态资源和动态资源是怎么个原理？
静态资源指该资源只在程序载入内存时一次性使用，之后都不会改变。动态资源是相反的概念。
资源的四个层级？
- 数据库中的资源 ，相当于仓库
- 资源文件中的资源，相当于旅行箱
- Wpf 对象资源，相当于背包
- 变量中的数据，相当于手里
什么是wpf对象资源？
使用window.Rescources标签下的ResourceDictionary标签夹住的资源
<Window.Resources>
<ResourceDictionary> <!--这个ResourceDictionary标签可以省略-->
<sys:String x:Key=”str”>
我是一个资源
</sys:String>
</ResourceDictionary>
</WIndow.Rescources>
<TextBlock Text=”{StaticResource ResourceKey=str}” <!--这一行的ResourceKey=可以不写-->
这是在xaml中引用，如何在程序中引用呢？
string text = (string) this.FindResource(“str”)//资源中的文件要自己来进行格式转换
使用标签引用和程序中的FindResource引用会在当前控件的Resource属性中查找，如果找不到，就会找上一级的。
如果得知就是引用当前的，可以使用string text = (string) this.Resources[“str”]
将资源程序写到外部文件，如何在程序中引用？
<window.Resources>
<ResourceDictionary Source=”xxx.xaml”/>
</window.Resources>
静态资源和动态资源中的静态和动态不是描述资源的，描述控件行为的，也说明改资源项是否可以被外部改写（类似xml的改写），只载入一次，之后永远不变，还是可以动态的变化。
对于动态资源可以使用this.Resoures[“res2”]=new TextBlock(){text=”我要改变了”} ，静态资源不理会对资源的重新赋值
<window.Resources>
<TextBlock x:Key=”res2” text=”我是一只鸡”/>
</window.Resources>
<Button content=”{DynamicResources res2}”/>
问题4：一个界面文件，是如何调用另外一个界面文件的？
比如在ScreenToGif这个项目中，有个Windows文件夹，下面有个Other文件，里面有个ColorSelector.xaml，如何在其他界面文件中使用呢？
步骤：
- 添加对该目录的引用using ScreenToGif.Windows.Other;，不然你需要写完整目录
- 书写代码
var colorPicker = new ColorSelector(UserSettings.All.BoardColor) { Owner = this };
var result = colorPicker.ShowDialog();
问题5： style属性是什么东西？
http://blog.csdn.net/aoshilang2249/article/details/45129365
《深入浅出WPF》 深入浅出话模板
问题6：录制屏幕界面分析
<n:LightWindow x:Name="RecorderLightWindow" x:Class="ScreenToGif.Windows.Recorder"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:n="clr-namespace:ScreenToGif.Controls"
xmlns:u="clr-namespace:ScreenToGif.Util"
xmlns:c="clr-namespace:ScreenToGif.Util.Converters"
Title="ScreenToGif" SnapsToDevicePixels="True" UseLayoutRounding="True" AllowsTransparency="True" WindowStyle="None"
Topmost="True" Icon="../Resources/Logo.ico" Child="{StaticResource Vector.Back}"
IsThin="{Binding RecorderThinMode, Source={x:Static u:UserSettings.All}}"
IsFullScreen="{Binding FullScreenMode, Source={x:Static u:UserSettings.All}}"
Width="{Binding Source={x:Static u:UserSettings.All}, Path=RecorderWidth, Mode=TwoWay}"
Height="{Binding Source={x:Static u:UserSettings.All}, Path=RecorderHeight, Mode=TwoWay}"
Left="{Binding Source={x:Static u:UserSettings.All}, Path=RecorderLeft, Mode=TwoWay}"
Top="{Binding Source={x:Static u:UserSettings.All}, Path=RecorderTop, Mode=TwoWay}"
FocusManager.FocusedElement="{Binding RelativeSource={x:Static RelativeSource.Self}, Mode=OneTime}"
Foreground="{Binding Source={x:Static u:UserSettings.All}, Path=RecorderForeground, Mode=TwoWay, Converter={StaticResource ColorToBrush}}"
Background="{Binding Source={x:Static u:UserSettings.All}, Path=RecorderBackground, Mode=TwoWay, Converter={StaticResource ColorToBrush}}"
SizeChanged="LightWindow_SizeChanged" Loaded="Recorder_Loaded" Closing="Window_Closing" LocationChanged="Window_LocationChanged">
<Window.Resources>
<Storyboard x:Key="ShowDiscardStoryboard">
<BooleanAnimationUsingKeyFrames Storyboard.TargetName="DiscardButton" Storyboard.TargetProperty="IsHitTestVisible" Duration="0:0:0" >
<DiscreteBooleanKeyFrame Value="True" KeyTime="0:0:0"/>
</BooleanAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="DiscardButton" Storyboard.TargetProperty="Visibility" Duration="0:0:0">
<DiscreteObjectKeyFrame Value="{x:Static Visibility.Visible}" KeyTime="0:0:0"/>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation Storyboard.TargetName="DiscardButton" Storyboard.TargetProperty="(Button.Opacity)" From="0" To="1" Duration="0:0:1">
<DoubleAnimation.EasingFunction>
<PowerEase Power="8" />
</DoubleAnimation.EasingFunction>
</DoubleAnimation>
</Storyboard>
<Storyboard x:Key="HideDiscardStoryboard">
<BooleanAnimationUsingKeyFrames Storyboard.TargetName="DiscardButton" Storyboard.TargetProperty="IsHitTestVisible" Duration="0:0:0" >
<DiscreteBooleanKeyFrame Value="False" KeyTime="0:0:0"/>
</BooleanAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="DiscardButton" Storyboard.TargetProperty="Visibility" Duration="0:0:0">
<DiscreteObjectKeyFrame Value="{x:Static Visibility.Collapsed}" KeyTime="0:0:0"/>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation Storyboard.TargetName="DiscardButton" Storyboard.TargetProperty="(Button.Opacity)"
From="{Binding ElementName=DiscardButton,Path=Opacity}" To="0" Duration="0:0:1">
<DoubleAnimation.EasingFunction>
<PowerEase Power="8" />
</DoubleAnimation.EasingFunction>
</DoubleAnimation>
</Storyboard>
<c:StageToButtonString x:Key="StageToButtonStringConverter"/>
<c:StageToCanvas x:Key="StageToCanvasConverter"/>
<c:ShortcutKeys x:Key="ShortcutKeys"/>
<c:InvertedBoolToVisibility x:Key="InvertedBoolToVisibility"/>
<c:BoolOrToInvertedVisibility x:Key="BoolOrToInvertedVisibility"/>
<c:IntToString x:Key="IntToStringConverter"/>
</Window.Resources>
<Window.CommandBindings><!--命令关联，命令前是否可以执行该命令，命令后要做什么-->
<CommandBinding Command="u:Commands.Options" CanExecute="Options_CanExecute" Executed="Options_Executed"/>
<CommandBinding Command="u:Commands.EnableSnapshot" CanExecute="EnableSnapshot_CanExecute" Executed="EnableSnapshot_Executed"/>
<CommandBinding Command="u:Commands.EnableThinMode" CanExecute="EnableThinMode_CanExecute" Executed="EnableThinMode_Executed"/>
<CommandBinding Command="u:Commands.EnableFullScreen" CanExecute="EnableFullScreen_CanExecute" Executed="EnableFullScreen_Executed"/>
<CommandBinding Command="u:Commands.EnableSnapToWindow" CanExecute="SnapToWindow_CanExecute"/>
</Window.CommandBindings>
<Grid x:Name="OutterGrid" UseLayoutRounding="True">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="31"/>
</Grid.RowDefinitions>
<!--Hollow part-->
<Border BorderBrush="{Binding ElementName=RecorderLightWindow, Path=BorderBrush}" BorderThickness="{Binding ElementName=RecorderLightWindow, Path=BorderThickness}"/>
<!--Command bar-->
<Grid Grid.Row="1" x:Name="LowerGrid" Height="31" VerticalAlignment="Bottom" Background="{Binding ElementName=RecorderLightWindow, Path=Background}"
KeyboardNavigation.TabNavigation="Cycle" MouseLeftButtonDown="CommandGrid_MouseLeftButtonDown">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid Grid.Column="0" Visibility="{Binding RecorderThinMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource Bool2Visibility}}">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<n:ImageButton Grid.Row="0" Grid.Column="0" x:Name="BackButton" Content="{StaticResource Vector.Back}" Style="{StaticResource Style.Button.NoText}"
ContentHeight="14" Padding="4,1" TabIndex="0" Click="BackButton_Click"/>
<n:ImageButton Grid.Row="1" Grid.Column="0" x:Name="CloseButton" Content="{StaticResource Vector.Close}" Style="{StaticResource Style.Button.NoText}"
ContentHeight="10" Padding="4,1" TabIndex="1" Click="CloseButton_Click"/>
<TextBlock Grid.Row="0" Grid.Column="1" x:Name="CaptionText" Text="{Binding Title, ElementName=RecorderLightWindow}" FontFamily="Segoe UI" FontSize="12"
FontWeight="Regular" Margin="5,0,0,0" Foreground="#FF6F5252" Effect="{DynamicResource Shadow.Foreground.Small}"/>
<TextBlock Grid.Row="1" Grid.Column="1" x:Name="FrameCountTextBlock" Text="{Binding FrameCount, ElementName=RecorderLightWindow, Converter={StaticResource IntToStringConverter}}"
FontFamily="Segoe UI" FontSize="12" FontWeight="Regular" Margin="5,0,0,0" Foreground="#FF061E87" Effect="{DynamicResource Shadow.Foreground.Small}"/>
</Grid>
<StackPanel Grid.Column="1" x:Name="ControlStackPanel" Height="31" Orientation="Horizontal" HorizontalAlignment="Right"
ScrollViewer.VerticalScrollBarVisibility="Disabled">
<n:ImageButton x:Name="SnapButton" Content="{StaticResource Vector.Crosshair}" Margin="0" Style="{StaticResource Style.Button.NoText}"
HorizontalContentAlignment="Center" Effect="{StaticResource Shadow.Foreground.Small}" ContentHeight="20" ContentWidth="20"
Visibility="{Binding FullScreenMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource InvertedBoolToVisibility}}"
Command="u:Commands.EnableSnapToWindow" Padding="3" TabIndex="2" PreviewMouseDown="SnapButton_PreviewMouseDown">
<n:ImageButton.ToolTip>
<ToolTip HorizontalOffset="-5" Placement="Bottom" Content="{DynamicResource Recorder.SnapToWindow}"/>
</n:ImageButton.ToolTip>
</n:ImageButton>
<n:ImageButton x:Name="OptionsButton" Content="{StaticResource Vector.Options}" Margin="0" Style="{StaticResource Style.Button.NoText}"
Effect="{StaticResource Shadow.Foreground.Small}" ContentHeight="20" ContentWidth="20" Command="u:Commands.Options" Padding="3" TabIndex="3">
<n:ImageButton.ToolTip>
<ToolTip HorizontalOffset="-5" Placement="Bottom" Content="{DynamicResource Options}"/>
</n:ImageButton.ToolTip>
</n:ImageButton>
<Separator Width="1" Margin="5,2"/>
<Viewbox Stretch="UniformToFill" ClipToBounds="True" Focusable="False">
<Viewbox.Visibility>
<MultiBinding Converter="{StaticResource BoolOrToInvertedVisibility}">
<Binding Path="RecorderThinMode" Source="{x:Static u:UserSettings.All}"/>
<Binding Path="SnapshotMode" Source="{x:Static u:UserSettings.All}"/>
</MultiBinding>
</Viewbox.Visibility>
<Grid HorizontalAlignment="Center" VerticalAlignment="Center" FlowDirection="LeftToRight" Margin="-4">
<n:CircularProgressBar StrokeThickness="2" Percentage="100" SegmentColor="Gray" Radius="24" IsTabStop="False"/>
<n:CircularProgressBar StrokeThickness="22" Percentage="100" SegmentColor="#FFF0F1F1" Radius="10" IsTabStop="False"/>
<n:CircularProgressBar StrokeThickness="2" Value="{Binding ElementName=FpsIntegerUpDown, Path=Value, Mode=OneWay}"
IsInverted="True" Minimum="1" Maximum="60" SegmentColor="#FFE28A73" Radius="24" IsTabStop="False"/>
<n:CircularProgressBar StrokeThickness="22" Value="{Binding ElementName=FpsIntegerUpDown, Path=Value, Mode=OneWay}"
IsInverted="True" Minimum="1" Maximum="60" SegmentColor="#FFE28A73" Radius="10" IsTabStop="False"/>
</Grid>
<Viewbox.ToolTip>
<ToolTip HorizontalOffset="-5" Placement="Bottom" Content="{DynamicResource Recorder.FpsRange}"/>
</Viewbox.ToolTip>
</Viewbox>
<n:IntegerUpDown x:Name="FpsIntegerUpDown" Margin="1,3" StepValue="1" Minimum="1" Maximum="60" MinWidth="45" TabIndex="4"
Value="{Binding Source={x:Static u:UserSettings.All}, Path=LatestFps, Mode=TwoWay}"
Visibility="{Binding SnapshotMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource InvertedBoolToVisibility}}">
<n:IntegerUpDown.ToolTip>
<ToolTip HorizontalOffset="-5" Placement="Bottom" Content="{DynamicResource Recorder.Fps}"/>
</n:IntegerUpDown.ToolTip>
</n:IntegerUpDown>
<Label Content="{StaticResource Recorder.Fps.Short}" FontSize="12" FontFamily="Segoe UI" Margin="1,0,0,0" VerticalContentAlignment="Center" Padding="0"
Foreground="{Binding ElementName=RecorderLightWindow, Path=Foreground}" Visibility="{Binding SnapshotMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource InvertedBoolToVisibility}}"/>
<Separator Width="1" Margin="5,2" Visibility="{Binding SnapshotMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource InvertedBoolToVisibility}}"/>
<!--<Viewbox Child="{StaticResource Vector.WidthHeight}" Stretch="UniformToFill" Margin="3,4" HorizontalAlignment="Right" FlowDirection="LeftToRight" SnapsToDevicePixels="True"
Visibility="{Binding RecorderThinMode, Converter={StaticResource InvertedBoolToVisibility}, Source={x:Static u:UserSettings.All}}"/>-->
<n:IntegerBox x:Name="WidthIntegerBox" Value="{Binding Source={x:Static u:UserSettings.All}, Path=RecorderWidth, Mode=TwoWay}"
Offset="{x:Static u:Constants.HorizontalOffset}" Minimum="100" Maximum="3000" TabIndex="6" Height="Auto" Padding="4,0" Margin="1,3"
ToolTip="{DynamicResource Recorder.Width}" ToolTipService.Placement="Bottom" ToolTipService.HorizontalOffset="-5"
Visibility="{Binding FullScreenMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource InvertedBoolToVisibility}}"/>
<Label Content="×" FontSize="16" FontFamily="Segoe Script" Margin="1" VerticalContentAlignment="Center" Padding="0"
Foreground="{Binding ElementName=RecorderLightWindow, Path=Foreground}"
Visibility="{Binding FullScreenMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource InvertedBoolToVisibility}}"/>
<n:IntegerBox x:Name="HeightIntegerBox" Value="{Binding Source={x:Static u:UserSettings.All}, Path=RecorderHeight, Mode=TwoWay}"
Offset="{x:Static u:Constants.VerticalOffset}" Minimum="100" Maximum="3000" TabIndex="7" Height="Auto" Padding="4,0" Margin="1,3"
ToolTip="{DynamicResource Recorder.Height}" ToolTipService.Placement="Bottom" ToolTipService.HorizontalOffset="-5"
Visibility="{Binding FullScreenMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource InvertedBoolToVisibility}}"/>
<Label Content="px" FontSize="12" FontFamily="Segoe UI" Margin="1,0,0,0" VerticalContentAlignment="Center" Padding="0"
Foreground="{Binding ElementName=RecorderLightWindow, Path=Foreground}"
Visibility="{Binding FullScreenMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource InvertedBoolToVisibility}}"/>
<Separator Width="1" Margin="5,2" Visibility="{Binding FullScreenMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource InvertedBoolToVisibility}}"/>
<n:ImageButton x:Name="DiscardButton" Text="{DynamicResource Recorder.Discard}" Content="{StaticResource Vector.Remove}" Visibility="Collapsed"
Click="DiscardButton_Click" Style="{StaticResource Style.Button.Horizontal}"
Foreground="{Binding ElementName=RecorderLightWindow, Path=Foreground}"
UseLayoutRounding="True" MaxSize="16" ContentHeight="18" ContentWidth="18" TabIndex="8"
MinWidth="{Binding RelativeSource={RelativeSource Mode=Self}, Path=ActualHeight}"
KeyGesture="{Binding Converter={StaticResource ShortcutKeys}, ConverterParameter='3'}"/>
<!--ToolTip="{Binding Source={x:Static properties:Settings.Default}, Path=StartPauseKey, Converter={StaticResource KeysToStringConverter}}" ToolTipService.Placement="Bottom"-->
<n:ImageButton x:Name="RecordPauseButton" UseLayoutRounding="True" MaxSize="16" ContentHeight="18" ContentWidth="18" TabIndex="9"
Text="{Binding Stage, ElementName=RecorderLightWindow, Converter={StaticResource StageToButtonStringConverter}, FallbackValue={StaticResource Recorder.Record}}"
Content="{Binding Stage, ElementName=RecorderLightWindow, Converter={StaticResource StageToCanvasConverter}, FallbackValue={StaticResource Vector.Record}}"
Click="RecordPauseButton_Click" Style="{StaticResource Style.Button.Horizontal}"
Foreground="{Binding ElementName=RecorderLightWindow, Path=Foreground}"
MinWidth="{Binding RelativeSource={RelativeSource Mode=Self}, Path=ActualHeight}"
KeyGesture="{Binding Converter={StaticResource ShortcutKeys}, ConverterParameter='1'}">
<n:ImageButton.ContextMenu>
<ContextMenu>
<n:ImageMenuItem Header="{DynamicResource Recorder.RecordingOptions}" IsHitTestVisible="False" Image="{StaticResource Vector.Record}" MaxSize="16"/>
<Separator/>
<n:ImageMenuItem Header="{DynamicResource Recorder.Snapshot}" IsCheckable="True" Image="{StaticResource Vector.Camera.Add}" MaxSize="16"
IsChecked="{Binding SnapshotMode, Source={x:Static u:UserSettings.All}, Mode=TwoWay}" Command="u:Commands.EnableSnapshot"/>
<n:ImageMenuItem x:Name="ThinModeMenuItem" Header="{DynamicResource Recorder.ThinMode}" IsCheckable="True" Image="{StaticResource Vector.Application}" MaxSize="16"
IsChecked="{Binding RecorderThinMode, Source={x:Static u:UserSettings.All}, Mode=TwoWay}" Command="u:Commands.EnableThinMode"
Visibility="{Binding FullScreenMode, Source={x:Static u:UserSettings.All}, Converter={StaticResource InvertedBoolToVisibility}}"/>
<n:ImageMenuItem Header="{DynamicResource Recorder.Fullscreen}" IsCheckable="True" Image="{StaticResource Vector.WidthHeight}" MaxSize="16"
IsChecked="{Binding FullScreenMode, Source={x:Static u:UserSettings.All}, Mode=TwoWay}" Command="u:Commands.EnableFullScreen"/>
</ContextMenu>
</n:ImageButton.ContextMenu>
</n:ImageButton>
<n:ImageButton x:Name="StopButton" Text="{DynamicResource Recorder.Stop}" Content="{StaticResource Vector.Stop}"
Click="StopButton_Click" Style="{StaticResource Style.Button.Horizontal}"
Foreground="{Binding ElementName=RecorderLightWindow, Path=Foreground}"
UseLayoutRounding="True" MaxSize="16" ContentHeight="18" ContentWidth="18" Margin="0" TabIndex="10"
MinWidth="{Binding RelativeSource={RelativeSource Mode=Self}, Path=ActualHeight}"
KeyGesture="{Binding Converter={StaticResource ShortcutKeys}, ConverterParameter='2'}"/>
</StackPanel>
</Grid>
</Grid>
</n:LightWindow>
问题7：如果这个软件让你实现，你会怎么做？
启动界面，是4个选项，录制桌面、录制摄像头、录制绘图、视频帧编辑器
录制桌面、录制摄像头、录制绘图其实是一样的东西。
无非是设置一个定时器，定时的采集图像放到硬盘中。这部分的代码在呢?
C:UserslaiqunAppDataLocalTemp C:UserslaiqunAppDataLocalTempScreenToGifRecording2018-02-03 14-18-53
<n:ImageButton x:Name="RecordPauseButton" UseLayoutRounding="True" MaxSize="16" ContentHeight="18" ContentWidth="18" TabIndex="9"
Text="{Binding Stage, ElementName=RecorderLightWindow, Converter={StaticResource StageToButtonStringConverter}, FallbackValue={StaticResource Recorder.Record}}"
Content="{Binding Stage, ElementName=RecorderLightWindow, Converter={StaticResource StageToCanvasConverter}, FallbackValue={StaticResource Vector.Record}}"
Click="RecordPauseButton_Click" Style="{StaticResource Style.Button.Horizontal}"
Foreground="{Binding ElementName=RecorderLightWindow, Path=Foreground}"
MinWidth="{Binding RelativeSource={RelativeSource Mode=Self}, Path=ActualHeight}"
录制按钮点击
private void RecordPauseButton_Click(object sender, RoutedEventArgs e)
{
if (!UserSettings.All.SnapshotMode)
RecordPause();
else
Snap();
}
RecordPause函数的实现：
private async void RecordPause()
{
switch (Stage) //Stage在哪儿改变？
{
case Stage.Stopped: //一开始肯定是从stopped 状态开始的，启动录制后，这里会将stopped状态改变为recording，表示正在录制。
录制其实在启动一个定时器，做各种记录性的操作。
从UnregisterEvents这个函数可以看出蛛丝马迹
private void UnregisterEvents()
{
_capture.Tick -= Normal_Elapsed;
_capture.Tick -= NormalAsync_Elapsed;
_capture.Tick -= Cursor_Elapsed;
_capture.Tick -= CursorAsync_Elapsed;
_capture.Tick -= FullCursor_Elapsed;
_capture.Tick -= Full_Elapsed;
}
private void Normal_Elapsed(object sender, EventArgs e)
{
//Actual position on the screen. 获取要录制的区域
var lefttop = Dispatcher.Invoke(() =>
{
var left = Math.Round((Math.Round(Left, MidpointRounding.AwayFromZero) + Constants.LeftOffset) * _scale);
var top = Math.Round((Math.Round(Top, MidpointRounding.AwayFromZero) + Constants.TopOffset) * _scale);
return new Point((int)left, (int)top);
});
//Take a screenshot of the area.
var bt = Native.Capture(_size, lefttop.X, lefttop.Y);
if (bt == null || !IsLoaded)
return;
var fileName = $"{Project.FullPath}{FrameCount}.png";
//这里只是简单的更新一下图像文件信息，并没有实际创建图像文件
Project.Frames.Add(new FrameInfo(fileName, FrameRate.GetMilliseconds(_snapDelay), new List<SimpleKeyGesture>(_keyList)));
_keyList.Clear();
//AddFrames创建图像文件
ThreadPool.QueueUserWorkItem(delegate { AddFrames(fileName, new Bitmap(bt)); });//线程池
FrameCount++;
}
1. System.Windows.Forms.Timer myTimer = new System.Windows.Forms.Timer();//实例化
2. myTimer.Tick += new EventHandler(函数名); //给timer挂起事件
3. myTimer.Enabled = true；//使timer可用
4. myTimer.Interval = n; //设置时间间隔，以毫秒为单位
5. myTimer.Stop(); //如果要暂停计时则使用Stop()方法
6. myTimer.Enabled = false;//若要停止使用timer，则使之不可用
设置项界面
是一个xml文件，用来读取和写入配置的。 程序的相关地方会读取这些配置，为了方便，最好把读取配置项的地方写在一起.这部分的代码在呢?UserSettings
namespace ScreenToGif.Util
{
internal sealed class UserSettings : INotifyPropertyChanged
{
#region Variables
private static ResourceDictionary _local;
private static ResourceDictionary _appData;
private static readonly ResourceDictionary Default;
public event PropertyChangedEventHandler PropertyChanged;
public static UserSettings All { get; } = new UserSettings();
视频帧编辑器负责把录制的一帧帧的图像载入，创建对应的缩略图。这部分的代码在呢?
我想在录制的时候顺势把鼠标和键盘录制进去，怎么实现？这部分的代码在呢?
Recorder构造函数
_actHook = new UserActivityHook(true, true); //true for the mouse, true for the keyboard.
_actHook.KeyDown += KeyHookTarget;
_actHook.OnMouseActivity += MouseHookTarget;