> 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/v9-3-0-80056.md).

# Version 9.3.0.80056 Changelog (July 15th, 2022)

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

Version: 9.3.0.80056

Release Date: July 15th, 2022

## Breaking Changes

* \[tools] ViewerControl: event name changed

|       | Declaration                                                    |
| ----- | -------------------------------------------------------------- |
| From: | event GoBackRequestedHandler ViewerControl.GoBackRequested     |
| To:   | event GoBackRequestedHandler ViewerControl.ViewerBackRequested |

## New features

* \[tools] Added Rubber stamp tool

![](https://3246663708-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Frgmys2szYV2Z567Zu3vi%2Fuploads%2Fgit-blob-425d100035923102971c355d4921f10363b1432f%2F85dfdc311bce3084091ba801b553943e47386581-862x832.gif?alt=media)

* \[tools] Added support to pan over documetns with middle mouse button

![](https://3246663708-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Frgmys2szYV2Z567Zu3vi%2Fuploads%2Fgit-blob-b8064abb2e304907c0808b6291d20558853466c6%2F0b76e2504d1745ce9c42d43d4058f257b6f24b97-862x832.gif?alt=media)

## Improvements

* \[tools] Measurement: after performing calibration it will save/cache new value and unit for the next annotations created
* \[tools] \[control] ViewerControl: when converting a file to PDF on a new tab, and then trying to close it, a dialog will be prompted for the user to perform "saving as"

## Bug Fixes

* \[Tools] FreeText: Fixes for handling Rich Text formatting on multiple language including CJK
* \[tools] FreeText: Added fixes to prevent random crashes with mouse interaction
* \[tools] \[control] Fixed page jump with navigation stack
* \[tools] \[control] ViewerControl: removed space shortcut since to move to next page
* \[tools] \[control] ViewerControl: fixes to prevent exception when changing tabs in the viewer
* \[tools] \[control] ViewerControl: fixed conversion of Image to PDF when image file type name was in caps lock (upper case)
* \[tools] \[control] ViewerControl: fixed actions button not changing visibility during UI customization

## New APIs - Tools Package SDK

*New* Events

* `event SignatureDialogRequestHandler ToolManager.SignatureDialogRequested`
* `ToolManager.SignatureDialogRequestHandler ViewerViewModel.SignatureDialogRequested`
* `ToolManager.SignatureDialogRequestHandler ViewerControl.SignatureDialogRequested`

*New* Delegate

* `delegate void ToolManager.SignatureDialogRequestHandler(ToolManager, SignatureDialogEventArgs)`

*New* Class pdftron.PDF.Tools.Controls.RubberStamper.RubberStampControl

* *New* Constructor
* `RubberStampControl()`
* *New* Method
* `Dispose()`
* *New* Properties
* `RubberStampControlViewModel ViewModel`

*New* Class pdftron.PDF.Tools.Controls.ViewModels.RubberStamper.RubberStampControlViewModel

* *New* Constructor
* `RubberStampControlViewModel()`
* *New* Method
* `async Task InitStandardStampsAsync()`
* `void Dispose()`
* *New* Properties
* `ObservableCollection<RubberStampItem> StampCollection`
* `List<StampColorPreset> StampColorList`
* `RubberStampItem SelectedStampItem`
* `ImageSource SelectedStampItemImage`

*New* Class pdftron.PDF.Tools.Controls.ViewModels.RubberStamper.RubberStampItem

* *New* Properties
* `string Text`
* `StampPresetColorType Color`
* `double FillOpacity`
* `bool IsPointingLeft`
* `bool IsPointingRight`
* `ImageSource PreviewImage`

*New* Class pdftron.PDF.Tools.Controls.ViewModels.RubberStamper.RubberStamps

* *New* Properties
* `ObservableCollection<RubberStampItem> RubberStampItemCollection`

*New* Class pdftron.PDF.Tools.Controls.ViewModels.RubberStamper.StampColorPreset

* *New* Properties
* `StampPresetColorType Id`
* `string StartColor`
* `string EndColor`
* `string TextColor`
* `string BorderColor`

*New* Class pdftron.PDF.Tools.Controls.ViewModels.RubberStamper.StampColors

* *New* Properties
* `List<StampColorPreset> StampColorPresetList`

*New* Enum pdftron.PDF.Tools.Controls.ViewModels.RubberStamper.StampPresetColorType

* `LightRed`
* `DarkRed`
* `LightGreen`
* `LightBlue`
* `Yellow`
* `Purple`

*New* abstract Class pdftron.PDF.Tools.Json.BaseObject

* *New* Methods
* `string ToJson()`
* `string ToJson(JsonSerializerSettings)`
* `void ToJsonFile(string)`
* `void ToJsonFile(string, JsonSerializerSettings)`
* `void FromJson(string)`
* `void FromJson(string, JsonSerializerSettings)`
* `void FromJsonFile(string, JsonSerializerSettings)`
* `void FromJsonFile(string)`
* `object Clone()`
* `T CloneObject<T>()`
* `void SetJsonDefaultValueHandling(DefaultValueHandling)`
* `void SetJsonFormatting(Formatting)`
* `void SetJsonNullValueHandling(NullValueHandling)`
* `void SetJsonTypeNameHandling(TypeNameHandling)`

*New* static Class pdftron.PDF.Tools.Json.JsonParse

* *New* Methods
* `static async Task<T> TryFromJsonFileAsync<T>(string, JsonSerializerSettings, int)`
* `static T TryFromJson<T>(string, JsonSerializerSettings)`
* `static string TryToJsonString<T>(T, JsonSerializerSettings)`
* `async static Task TryToJsonFileAsync<T>(T, string, JsonSerializerSettings)`

*New* class SignatureDialogEventArgs

* *New* Properties
* `bool IsFullScreen`
* `bool IsWidget`
* `bool Handled`

*New* Resources

* `RubberStamps.json`
* `StampColors.json`


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.apryse.com/uwp/changelogs/version-9/v9-3-0-80056.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.