> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/uwp/changelogs/version-9/v9-1-2-78727.md).

# Version 9.1.2.78727 Changelog (December 14th, 2021)

World's #1 PDF SDK Library for Web, Mobile, Server, Desktop

Version: 9.1.2.78727

Release Date: December 14th, 2021

## Improvements

* \[tools] Updated WinUI 2.7 which gives a Windows 11 UX
* \[tools] Ink annotation will now be saved when Ink toolbar is closed
* \[tools] \[control] ViewerControl: Improved overall loading performance
* \[tools] \[control] ViewerControl: Improved responsiveness on touch device
* \[tools] \[control] ViewerControl: Added new shortcut to read aloud during text selection using Ctrl + R
* \[tools] \[control] ViewerControl: Updated all dialogs to use ContentDialog instead of MessageDialog
* \[tools] \[control] ThumbnailsView: Improved command bar UX by removing necessity of expading it to see button labels

## Bug Fixes

* \[tools] Fixes to address the possibility of runtime deadlocks
* \[tools] Minor localization improvements
* \[tools] \[control] ViewerControl: Fixed exception that could be raised when re-loading a page that has the ViewerControl
* \[tools] \[control] ViewerControl: Fixed flatten annotation action not firing document modified event
* \[tools] \[control] ViewerControl: Fixed overlapping of Flyout menus that could be opened at the same time (ViewModel, Viewer Secondary optins, Actions, etc)
* \[tools] \[control] ViewerControl: Fixed Add tab button not showing up in certain times
* \[tools] \[control] CreateDocControl: Fixed caching of the previous session by clearing fields to the default values
* \[tools] \[control] ContextMenu: Fixes for better handling the Show/Hide of the ContextMenu with different annotation tools
* \[tools] \[control] ContextMenu: Improved it's positioning on Show
* \[tools] \[control] Sound Annotation: Fixed playing audio recordings made in different viewers by properly wrapping to WAV format
* \[tools] \[control] Sound Annotation: better handling of the PDF page where audio annot has been requested to be inserted
* \[tools] \[control] Sound Annotation: Added Sound annotation to the Annotation List / side panel with audio duration in seconds

## New APIs - Tools Package SDK

*New* Methods

* `ViewerControl.CancelAnyOpenedContentDialog()`
* `static Windows.Foundation.AsyncStatus DialogHelper.GetDialogStatus()`
* `TabControlViewModel.CloseTabAsync()`
* `void ContextMenuControlViewModel.SetDimensions(double, double)`
* `static async Task<StorageFile> DocumentManager.SaveAudioWaveToDiskAsync(byte[])`
* `async Task TextSelect.HandleTextToSpeechAsync()`

*New* Properties

* `bool ViewerControl.HandleSystemBackButton`
* `bool ViewerControl.HandleViewerBackButton`
* `bool ViewerControl.IsExternalSaveEnabled`
* `bool ViewerControl.IsAnyContentDialogOpened`
* `bool ViewerControl.ShowTabFileInfo`
* `bool ViewerViewModel.HandleSystemBackButton`
* `bool ViewerViewModel.HandleViewerBackButton`
* `bool ViewerViewModel.IsExternalSaveEnabled`
* `bool ViewerViewModel.ShowTabFileInfo`
* `bool TabControlViewModel.ShowTabFileInfo`
* `bool CreateDocControlViewModel.IsCreateButtonEnabled`

*New* Events

* `ViewerControl.SaveRequested`
* `ViewerControl.SaveAsRequested`
* `ViewerControl.DocumentCreationFailed`
* `ViewerControl.NewDocumentCreated`
* `ViewerControl.ImageLoaded`
* `ViewerControl.ImageLoadingFailed`
* `ViewerControl.GoBackRequested`
* `ViewerViewModel.OnSoundAnnotRequested`
* `ViewerViewModel.DocumentCreationFailed`
* `ViewerViewModel.NewDocumentCreated`
* `ViewerViewModel.ImageLoaded`
* `ViewerViewModel.ImageLoadingFailed`
* `ViewerViewModel.SaveRequested`
* `ViewerViewModel.SaveAsRequested`
* `CreateDocControl.DocumentCreationFailed`
* `CreateDocControl.NewDocumentCreated`
* `CreateDocControl.DocumentCreationCancelled`
* `CreateDocControl.ImageLoaded`
* `CreateDocControl.ImageLoadingFailed`
* `CreateDocControlViewModel.DocumentCreationCancelled`
* `CreateDocControlViewModel.ImageLoaded`
* `CreateDocControlViewModel.ImageLoadingFailed`
* `PdfViewCtrlTabInfo.TabClosed`

*New* Enum WaveFormatEncoding

* `Unknown`
* `Pcm`
* `Adpcm`
* `IeeeFloat`
* `Vselp`
* `IbmCvsd`
* `ALaw`
* `MuLaw`
* `Dts`
* `Drm`
* `WmaVoice9`
* `OkiAdpcm`
* `DviAdpcm`
* `ImaAdpcm`
* `MediaspaceAdpcm`
* `SierraAdpcm`
* `G723Adpcm`
* `DigiStd`
* `DigiFix`
* `DialogicOkiAdpcm`
* `MediaVisionAdpcm`
* `CUCodec`
* `YamahaAdpcm`
* `SonarC`
* `DspGroupTrueSpeech`
* `EchoSpeechCorporation1`
* `AudioFileAf36`
* `Aptx`
* `AudioFileAf10`
* `Prosody1612`
* `Lrc`
* `DolbyAc2`
* `Gsm610`
* `MsnAudio`
* `AntexAdpcme`
* `ControlResVqlpc`
* `DigiReal`
* `DigiAdpcm`
* `ControlResCr10`
* `Extensible`
* `WAVE_FORMAT_DEVELOPMENT`

*New* Class WaveFormat

* *New* Constructors
  * `WaveFormat()`
  * `WaveFormat(int, int)`
  * `WaveFormat(int, int, int)`
  * `WaveFormat(BinaryReader)`
* *New* Properties
  * `WaveFormatEncoding Encoding`
  * `int Channels`
  * `int SampleRate`
  * `int AverageBytesPerSecond`
  * `virtual int BlockAlign`
  * `int BitsPerSample`
  * `int ExtraSize`
* *New* Methods
  * `int ConvertLatencyToByteSize(int)`
  * `static WaveFormat CreateCustomFormat(WaveFormatEncoding, int, int, int, int, int)`
  * `static WaveFormat CreateALawFormat(int, int)`
  * `static WaveFormat CreateMuLawFormat(int, int)`
  * `static WaveFormat CreateIeeeFloatWaveFormat(int, int)`
  * `static WaveFormat FromFormatChunk(BinaryReader, int)`
  * `virtual void Serialize(BinaryWriter)`

*New* Interface IWaveProvider

* *New* Properties
  * `WaveFormat WaveFormat`
* *New* Methods
  * `int Read(byte[], int, int)`

*New* abstract Class WaveStream

* *New* Properties
  * `abstract WaveFormat WaveFormat`
  * `virtual int BlockAlign`
  * `virtual TimeSpan CurrentTime`
  * `virtual TimeSpan TotalTime`
* *New* Methods
  * `void Skip(int)`
  * `virtual bool HasData(int)`

*New* Class RawSourceWaveStream

* *New* Constructors
  * `RawSourceWaveStream(Stream, WaveFormat)`
  * `RawSourceWaveStream(byte[], int, int, WaveFormat)`

*New* Class WaveFileWriterRT

* *New* Constructors
  * `public WaveFileWriterRT(Stream, WaveFormat)`
* *New* Properties
  * `string Filename`
  * `WaveFormat WaveFormat`
* *New* Methods
  * `static async Task<StorageFile> CreateWaveFileAsync(StorageFile, IWaveProvider)`
  * `void WriteSample(float)`
  * `void WriteSamples(float[], int, int)`
  * `void WriteSamples(short[], int, int)`

*New* Class WaveFormatExtraData

* *New* Constructors
  * `WaveFormatExtraData(BinaryReader)`
* *New* Properties
  * `byte[] ExtraData`


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