ScreenToGif 代碼分析

本文轉載自查看原文 2018-02-04 07:45 285

ScreenToGif項目由四個文件夾組成：

Files 存放協議文件
GifRecorder 存放gif編碼器代碼
ScreenToGif 存放主代碼
Other 存放Hooktest和Translator的代碼

問題1：GifRecorder 和ScreenToGif、Hooktest、Translator 下面都有了一個Properties，里面有個AssemblyInfo.cs是什么東西？

.net工程的Properties文件夾下自動生成一個名為AssemblyInfo.cs的文件，一般情況下我們很少直接改動該文件。但我們實際上通過另一個形式操作該文件。那就是通過在鼠標右鍵點擊項目的屬性進入“應用程序”->“程序集信息”，然后修改信息。

程序集指的是DLL或者EXE等可執行文件。

問題2：啟動界面分析

<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>

<!--Command后面是命令的名字，實際執行的函數是executed里寫的函數其他控件必須指明command這個屬性

應用場景是菜單欄和工具欄的功能相同，我們要將其映射到同一個command。還有就是一個控件禁用后，相同功能的控件也要一起被禁用，這有CanExecute 來幫助同步，同時可用，或者同時不可用->

</Window.CommandBindings>

<Grid>

<Grid.RowDefinitions>

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

</Grid.ColumnDefinitions>

<!--<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"/>-->

</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"/>

</Grid>

<Grid.ColumnDefinitions>

</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><!---這有一個浮動提示->

</n:ImageButton>

</Grid>

</Window>

問題3：使用的靜態資源和動態資源是怎么個原理？

靜態資源指該資源只在程序載入內存時一次性使用，之后都不會改變。動態資源是相反的概念。

資源的四個層級？

數據庫中的資源，相當於倉庫
資源文件中的資源，相當於旅行箱
Wpf 對象資源，相當於背包
變量中的數據，相當於手里

什么是wpf對象資源？

使用window.Rescources標簽下的ResourceDictionary標簽夾住的資源

<Window.Resources>

<sys:String x:Key=”str”>

我是一個資源

</sys:String>

</ResourceDictionary>

</WIndow.Rescources>

這是在xaml中引用，如何在程序中引用呢？

string text = (string) this.FindResource(“str”)//資源中的文件要自己來進行格式轉換

使用標簽引用和程序中的FindResource引用會在當前控件的Resource屬性中查找，如果找不到，就會找上一級的。

如果得知就是引用當前的，可以使用string text = (string) this.Resources[“str”]

將資源程序寫到外部文件，如何在程序中引用？

<window.Resources>

</window.Resources>

靜態資源和動態資源中的靜態和動態不是描述資源的，描述控件行為的，也說明改資源項是否可以被外部改寫（類似xml的改寫），只載入一次，之后永遠不變，還是可以動態的變化。

對於動態資源可以使用this.Resoures[“res2”]=new TextBlock(){text=”我要改變了”} ，靜態資源不理會對資源的重新賦值

<window.Resources>

</window.Resources>

問題4：一個界面文件，是如何調用另外一個界面文件的？

比如在ScreenToGif這個項目中，有個Windows文件夾，下面有個Other文件，里面有個ColorSelector.xaml，如何在其他界面文件中使用呢？

步驟：

添加對該目錄的引用using ScreenToGif.Windows.Other;，不然你需要寫完整目錄
書寫代碼

var colorPicker = new ColorSelector(UserSettings.All.BoardColor) { Owner = this };

var result = colorPicker.ShowDialog();

問題5： style屬性是什么東西？

http://blog.csdn.net/aoshilang2249/article/details/45129365

《深入淺出WPF》深入淺出話模板

問題6：錄制屏幕界面分析

<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>

</BooleanAnimationUsingKeyFrames>

</ObjectAnimationUsingKeyFrames>

<DoubleAnimation.EasingFunction>

</DoubleAnimation.EasingFunction>

</DoubleAnimation>

</Storyboard>

</BooleanAnimationUsingKeyFrames>

</ObjectAnimationUsingKeyFrames>

<DoubleAnimation Storyboard.TargetName="DiscardButton" Storyboard.TargetProperty="(Button.Opacity)"

From="{Binding ElementName=DiscardButton,Path=Opacity}" To="0" Duration="0:0:1">

<DoubleAnimation.EasingFunction>

</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>

</Window.CommandBindings>

<Grid.RowDefinitions>

</Grid.RowDefinitions>

<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>

</Grid.ColumnDefinitions>

<Grid.RowDefinitions>

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

</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>

</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>

</n:ImageButton.ToolTip>

</n:ImageButton>

<Viewbox.Visibility>

</MultiBinding>

</Viewbox.Visibility>

<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>

</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>

</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}}"/>

<!--<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}}"/>

<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'}"/>

<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>

<n:ImageMenuItem Header="{DynamicResource Recorder.RecordingOptions}" IsHitTestVisible="False" Image="{StaticResource Vector.Record}" MaxSize="16"/>

<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>

</n:LightWindow>

問題7：如果這個軟件讓你實現，你會怎么做？

啟動界面，是4個選項，錄制桌面、錄制攝像頭、錄制繪圖、視頻幀編輯器

錄制桌面、錄制攝像頭、錄制繪圖其實是一樣的東西。

無非是設置一個定時器，定時的采集圖像放到硬盤中。這部分的代碼在呢?

C:\Users\laiqun\AppData\Local\Temp\ C:\Users\laiqun\AppData\Local\Temp\ScreenToGif\Recording\2018-02-03 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}"

錄制按鈕點擊

private void RecordPauseButton_Click(object sender, RoutedEventArgs e)

{

if (!UserSettings.All.SnapshotMode)

RecordPause();

else

Snap();

}

RecordPause函數的實現：

private async void RecordPause()

{

switch (Stage) //Stage在哪兒改變？

{

case Stage.Stopped: //一開始肯定是從stopped 狀態開始的，啟動錄制后，這里會將stopped狀態改變為recording，表示正在錄制。

錄制其實在啟動一個定時器，做各種記錄性的操作。

從UnregisterEvents這個函數可以看出蛛絲馬跡

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. 獲取要錄制的區域

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";

//這里只是簡單的更新一下圖像文件信息，並沒有實際創建圖像文件

Project.Frames.Add(new FrameInfo(fileName, FrameRate.GetMilliseconds(_snapDelay), new List<SimpleKeyGesture>(_keyList)));

_keyList.Clear();

//AddFrames創建圖像文件

ThreadPool.QueueUserWorkItem(delegate { AddFrames(fileName, new Bitmap(bt)); });//線程池

FrameCount++;

}

1. System.Windows.Forms.Timer myTimer = new System.Windows.Forms.Timer();//實例化　

2. myTimer.Tick += new EventHandler(函數名); //給timer掛起事件

3. myTimer.Enabled = true；//使timer可用

4. myTimer.Interval = n; //設置時間間隔，以毫秒為單位

5. myTimer.Stop(); //如果要暫停計時則使用Stop()方法

6. myTimer.Enabled = false;//若要停止使用timer，則使之不可用

設置項界面

是一個xml文件，用來讀取和寫入配置的。程序的相關地方會讀取這些配置，為了方便，最好把讀取配置項的地方寫在一起.這部分的代碼在呢?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();

視頻幀編輯器負責把錄制的一幀幀的圖像載入，創建對應的縮略圖。這部分的代碼在呢?

我想在錄制的時候順勢把鼠標和鍵盤錄制進去，怎么實現？這部分的代碼在呢?

Recorder構造函數

_actHook = new UserActivityHook(true, true); //true for the mouse, true for the keyboard.

_actHook.KeyDown += KeyHookTarget;

_actHook.OnMouseActivity += MouseHookTarget;

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